RtfToXamlReader.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Documents / RtfToXamlReader.cs / 1305600 / RtfToXamlReader.cs

                            //---------------------------------------------------------------------------- 
//
// File: RtfToXamlReader.cs
//
// Copyright (C) Microsoft Corporation.  All rights reserved. 
//
// Description: Rtf reader to convert the rtf content into Xaml content. 
// 
//---------------------------------------------------------------------------
 
using System.Collections;
using System.Diagnostics;
using System.Globalization;
using System.Text; 
using System.IO;
using System.Windows.Media; // Color 
using Microsoft.Win32; // Registry for font substitutes 
using MS.Internal; // Invariant
 

namespace System.Windows.Documents
{
    ///  
    /// Horizontal alignment
    ///  
    internal enum HAlign 
    {
        AlignLeft, 
        AlignRight,
        AlignCenter,
        AlignJustify,
        AlignDefault 
    };
 
    ///  
    /// Horizontal alignment
    ///  
    internal enum VAlign
    {
        AlignTop,
        AlignCenter, 
        AlignBottom,
    }; 
 
    /// 
    /// Flow direction 
    /// 
    internal enum DirState
    {
        DirDefault, 
        DirLTR,
        DirRTL 
    }; 

    internal enum FontSlot 
    {
        LOCH = 0,
        DBCH = 1,
        HICH = 2 
    };
 
    ///  
    /// Underline state
    ///  
    internal enum ULState
    {
        ULNone,
        ULNormal, 
        ULDot,
        ULDash, 
        ULDashDot, 
        ULDashDotDot,
        ULDouble, 
        ULHeavyWave,
        ULLongDash,
        ULThick,
        ULThickDot, 
        ULThickDash,
        ULThickDashDot, 
        ULThickDashDotDot, 
        ULThickLongDash,
        ULDoubleWave, 
        ULWord,
        ULWave
    };
 
    /// 
    /// Strikethrough state 
    ///  
    internal enum StrikeState
    { 
        StrikeNone,
        StrikeNormal,
        StrikeDouble
    }; 

    ///  
    /// Document node type 
    /// WARNING: Keep in [....] with array used by GetTagName
    ///  
    internal enum DocumentNodeType
    {
        dnUnknown = 0,
        dnText, 
        dnInline,
        dnLineBreak, 
        dnHyperlink, 
        dnParagraph,
        dnInlineUIContainer, 
        dnBlockUIContainer,
        dnImage,
        dnList,
        dnListItem, 
        dnTable,
        dnTableBody, 
        dnRow, 
        dnCell,
        dnSection, 
        dnFigure,
        dnFloater,
        dnFieldBegin,
        dnFieldEnd, 
        dnShape,
        dnListText 
    }; 

    ///  
    /// MarkerStyle
    /// 
    internal enum MarkerStyle
    { 
        MarkerNone = -1,
        MarkerArabic = 0, 
        MarkerUpperRoman = 1, 
        MarkerLowerRoman = 2,
        MarkerUpperAlpha = 3, 
        MarkerLowerAlpha = 4,
        MarkerOrdinal = 5,
        MarkerCardinal = 6,
        MarkerBullet = 23, 
        MarkerHidden = 255          // pseudo-value for no list text
    }; 
 
    /// 
    /// Converters 
    /// 
    internal static class Converters
    {
        internal static double TwipToPx(double twip) 
        {
            return (twip / 1440f) * 96f; 
        } 

        internal static double TwipToPositivePx(double twip) 
        {
            double px = (twip / 1440f) * 96f;
            if (px < 0)
            { 
                px = 0;
            } 
            return px; 
        }
 
        internal static double TwipToPositiveVisiblePx(double twip)
        {
            double px = (twip / 1440f) * 96f;
            if (px < 0) 
            {
                px = 0; 
            } 
            if (twip > 0.0 && px < 1.0)
            { 
                px = 1.0;
            }
            return px;
        } 

        internal static string TwipToPxString(double twip) 
        { 
            double px = TwipToPx(twip);
            return px.ToString("f2", CultureInfo.InvariantCulture); 
        }

        internal static string TwipToPositivePxString(double twip)
        { 
            double px = TwipToPositivePx(twip);
            return px.ToString("f2", CultureInfo.InvariantCulture); 
        } 

        internal static string TwipToPositiveVisiblePxString(double twip) 
        {
            double px = TwipToPositiveVisiblePx(twip);
            return px.ToString("f2", CultureInfo.InvariantCulture);
        } 

        internal static double PxToPt(double px) 
        { 
            return (px / 96) * 72f;
        } 

        internal static long PxToTwipRounded(double px)
        {
            double twip = (px / 96f) * 1440f; 
            if (twip < 0)
            { 
                return (long)(twip - 0.5); 
            }
            else 
            {
                return (long)(twip + 0.5);
            }
        } 

        internal static bool StringToDouble(string s, ref double d) 
        { 
            bool ret = true;
 
            d = 0.0;
            try
            {
                d = System.Convert.ToDouble(s, CultureInfo.InvariantCulture); 
            }
            catch (System.OverflowException) 
            { 
                ret = false;
            } 
            catch (System.FormatException)
            {
                ret = false;
            } 

            return ret; 
        } 

        internal static bool StringToInt(string s, ref int i) 
        {
            bool ret = true;

            i = 0; 
            try
            { 
                i = System.Convert.ToInt32(s, CultureInfo.InvariantCulture); 
            }
            catch (System.OverflowException) 
            {
                ret = false;
            }
            catch (System.FormatException) 
            {
                ret = false; 
            } 
            return ret;
        } 

        internal static string StringToXMLAttribute(string s)
        {
            if (s.IndexOf('"') == -1) 
            {
                return s; 
            } 

            StringBuilder sb = new StringBuilder(); 

            for (int i = 0; i < s.Length; i++)
            {
                if (s[i] == '"') 
                {
                    sb.Append("""); 
                } 
                else
                { 
                    sb.Append(s[i]);
                }
            }
 
            return sb.ToString();
        } 
 
        internal static bool HexStringToInt(string s, ref int i)
        { 
            bool ret = true;

            i = 0;
            try 
            {
                i = System.Int32.Parse(s, System.Globalization.NumberStyles.AllowHexSpecifier, CultureInfo.InvariantCulture); 
            } 
            catch (System.OverflowException)
            { 
                ret = false;
            }
            catch (System.FormatException)
            { 
                ret = false;
            } 
            return ret; 
        }
 
        internal static string MarkerStyleToString(MarkerStyle ms)
        {
            switch (ms)
            { 
                case MarkerStyle.MarkerArabic:
                    return "Decimal"; 
                case MarkerStyle.MarkerUpperRoman: 
                    return "UpperRoman";
                case MarkerStyle.MarkerLowerRoman: 
                    return "LowerRoman";
                case MarkerStyle.MarkerUpperAlpha:
                    return "UpperLatin";
                case MarkerStyle.MarkerLowerAlpha: 
                    return "LowerLatin";
                case MarkerStyle.MarkerOrdinal: 
                    return "Decimal";               // Note no XAML support 
                case MarkerStyle.MarkerCardinal:
                    return "Decimal";               // Note no XAML support 
                case MarkerStyle.MarkerHidden:
                    return "None";
                case MarkerStyle.MarkerBullet:
                    return "Disc"; 
                default:
                    return "Decimal"; 
            } 
        }
 
        internal static string MarkerStyleToOldRTFString(MarkerStyle ms)
        {
            switch (ms)
            { 
                case MarkerStyle.MarkerBullet:
                    // return "\\pnbidia"; 
                    // return "\\pnbidib"; 
                    return "\\pnlvlblt";
                default: 
                case MarkerStyle.MarkerArabic:
                    // return "\\pndec";
                    return "\\pnlvlbody\\pndec";
                case MarkerStyle.MarkerCardinal: 
                    return "\\pnlvlbody\\pncard";
                case MarkerStyle.MarkerUpperAlpha: 
                    return "\\pnlvlbody\\pnucltr"; 
                case MarkerStyle.MarkerUpperRoman:
                    return "\\pnlvlbody\\pnucrm"; 
                case MarkerStyle.MarkerLowerAlpha:
                    return "\\pnlvlbody\\pnlcltr";
                case MarkerStyle.MarkerLowerRoman:
                    return "\\pnlvlbody\\pnlcrm"; 
                case MarkerStyle.MarkerOrdinal:
                    //return "\\pnlvlbody\\pnordt"; 
                    return "\\pnlvlbody\\pnord"; 
            }
        } 

        // Convert FG, BG and shading to produce color to fill with.
        // Shading is in 100'ths of a percent (ie, 10000 is 100%)
        // A value of zero for shading means use all CB. 
        // A value of 10000 for shading means use all CF.
        // Intermediate values mean some combination of 
        internal static bool ColorToUse(ConverterState converterState, long cb, long cf, long shade, ref Color c) 
        {
            ColorTableEntry entryCB = cb >= 0 ? converterState.ColorTable.EntryAt((int)cb) : null; 
            ColorTableEntry entryCF = cf >= 0 ? converterState.ColorTable.EntryAt((int)cf) : null;

            // No shading
            if (shade < 0) 
            {
                if (entryCB == null) 
                { 
                    return false;
                } 
                else
                {
                    c = entryCB.Color;
                    return true; 
                }
            } 
 
            // Shading
            else 
            {
                Color cCB = entryCB != null ? entryCB.Color : Color.FromArgb(0xFF, 0, 0, 0);
                Color cCF = entryCF != null ? entryCF.Color : Color.FromArgb(0xFF, 255, 255, 255);
 
                // No color specifies means shading is treated as a grey intensity.
                if (entryCF == null && entryCB == null) 
                { 
                    c = Color.FromArgb(0xff,
                                      (byte)(255 - (255 * shade / 10000)), 
                                      (byte)(255 - (255 * shade / 10000)),
                                      (byte)(255 - (255 * shade / 10000)));
                    return true;
                } 

                // Only CF means CF fades as shading goes from 10,000 to 0 
                else if (entryCB == null) 
                {
                    c = Color.FromArgb(0xff, 
                                        (byte)(cCF.R + ((255 - cCF.R) * (10000 - shade) / 10000)),
                                        (byte)(cCF.G + ((255 - cCF.G) * (10000 - shade) / 10000)),
                                        (byte)(cCF.B + ((255 - cCF.B) * (10000 - shade) / 10000)));
                    return true; 
                }
 
                // Only CB means CB gets larger impact (from black ) as shading goes from 10000 to 0 
                else if (entryCF == null)
                { 
                    c = Color.FromArgb(0xff,
                                        (byte)(cCB.R - (cCB.R * shade / 10000)),
                                        (byte)(cCB.G - (cCB.G * shade / 10000)),
                                        (byte)(cCB.B - (cCB.B * shade / 10000))); 
                    return true;
                } 
 
                // Both - need to mix colors
                else 
                {
                    c = Color.FromArgb(0xff,
                                      (byte)((cCB.R * (10000 - shade) / 10000) +
                                              (cCF.R * shade / 10000)), 
                                      (byte)((cCB.G * (10000 - shade) / 10000) +
                                              (cCF.G * shade / 10000)), 
                                      (byte)((cCB.B * (10000 - shade) / 10000) + 
                                              (cCF.B * shade / 10000)));
                    return true; 
                }
            }
        }
 
        internal static string AlignmentToString(HAlign a, DirState ds)
        { 
            switch (a) 
            {
                case HAlign.AlignLeft: 
                    return (ds != DirState.DirRTL) ? "Left" : "Right";
                case HAlign.AlignRight:
                    return (ds != DirState.DirRTL) ? "Right" : "Left";
                case HAlign.AlignCenter: 
                    return "Center";
                case HAlign.AlignJustify: 
                    return "Justify"; 
                case HAlign.AlignDefault:
                default: 
                    return "";
            }
        }
 
        internal static string MarkerCountToString(MarkerStyle ms, long nCount)
        { 
            StringBuilder sb = new StringBuilder(); 

            if (nCount < 0) 
            {
                nCount = 0;
            }
 
            switch (ms)
            { 
                case MarkerStyle.MarkerUpperRoman: 
                case MarkerStyle.MarkerLowerRoman:
                    { 
                        return MarkerRomanCountToString(sb, ms, nCount);
                    }

                case MarkerStyle.MarkerLowerAlpha: 
                case MarkerStyle.MarkerUpperAlpha:
                    { 
                        return MarkerAlphaCountToString(sb, ms, nCount); 
                    }
 
                case MarkerStyle.MarkerArabic:
                case MarkerStyle.MarkerOrdinal:
                case MarkerStyle.MarkerCardinal:
                    return nCount.ToString(CultureInfo.InvariantCulture); 

                case MarkerStyle.MarkerHidden: 
                case MarkerStyle.MarkerNone: 
                    return "";
 
                case MarkerStyle.MarkerBullet:
                default:
                    return "\\'B7";
            } 
        }
 
        private static string MarkerRomanCountToString(StringBuilder sb, MarkerStyle ms, long nCount) 
        {
            while (nCount >= 1000) 
            {
                sb.Append("M");
                nCount -= 1000;
            } 

            // 100's 
            switch (nCount / 100) 
            {
                case 9: 
                    sb.Append("CM"); break;
                case 8:
                    sb.Append("DCCC"); break;
                case 7: 
                    sb.Append("DCC"); break;
                case 6: 
                    sb.Append("DC"); break; 
                case 5:
                    sb.Append("D"); break; 
                case 4:
                    sb.Append("CD"); break;
                case 3:
                    sb.Append("CCC"); break; 
                case 2:
                    sb.Append("CC"); break; 
                case 1: 
                    sb.Append("C"); break;
                case 0: 
                    break;
            }
            nCount = nCount % 100;
 
            // 10's
            switch (nCount / 10) 
            { 
                case 9:
                    sb.Append("XC"); break; 
                case 8:
                    sb.Append("LXXX"); break;
                case 7:
                    sb.Append("LXX"); break; 
                case 6:
                    sb.Append("LX"); break; 
                case 5: 
                    sb.Append("L"); break;
                case 4: 
                    sb.Append("XL"); break;
                case 3:
                    sb.Append("XXX"); break;
                case 2: 
                    sb.Append("XX"); break;
                case 1: 
                    sb.Append("X"); break; 
                case 0:
                    break; 
            }
            nCount = nCount % 10;

            // 1's 
            switch (nCount)
            { 
                case 9: 
                    sb.Append("IX"); break;
                case 8: 
                    sb.Append("VIII"); break;
                case 7:
                    sb.Append("VII"); break;
                case 6: 
                    sb.Append("VI"); break;
                case 5: 
                    sb.Append("V"); break; 
                case 4:
                    sb.Append("IV"); break; 
                case 3:
                    sb.Append("III"); break;
                case 2:
                    sb.Append("II"); break; 
                case 1:
                    sb.Append("I"); break; 
                case 0: 
                    break;
            } 

            if (ms == MarkerStyle.MarkerUpperRoman)
            {
                return sb.ToString(); 
            }
            else 
            { 
                return sb.ToString().ToLower(CultureInfo.InvariantCulture);
            } 
        }

        private static string MarkerAlphaCountToString(StringBuilder sb, MarkerStyle ms, long nCount)
        { 
            int toThe1 = 26;
            int toThe2 = 676; 
            int toThe3 = 17576; 
            int toThe4 = 456976;
 
            char[] ca = new char[1];
            int temp;

            temp = 0; 
            while (nCount > toThe4 + toThe3 + toThe2 + toThe1)
            { 
                temp++; 
                nCount -= toThe4;
            } 
            if (temp > 0)
            {
                if (temp > 26) temp = 26;
                ca[0] = (char)('A' + (temp - 1)); 
                sb.Append(ca);
            } 
 
            temp = 0;
            while (nCount > toThe3 + toThe2 + toThe1) 
            {
                temp++;
                nCount -= toThe3;
            } 
            if (temp > 0)
            { 
                ca[0] = (char)('A' + (temp - 1)); 
                sb.Append(ca);
            } 

            temp = 0;
            while (nCount > toThe2 + toThe1)
            { 
                temp++;
                nCount -= toThe2; 
            } 
            if (temp > 0)
            { 
                ca[0] = (char)('A' + (temp - 1));
                sb.Append(ca);
            }
 
            temp = 0;
            while (nCount > toThe1) 
            { 
                temp++;
                nCount -= toThe1; 
            }
            if (temp > 0)
            {
                ca[0] = (char)('A' + (temp - 1)); 
                sb.Append(ca);
            } 
 
            ca[0] = (char)('A' + (nCount - 1));
            sb.Append(ca); 

            if (ms == MarkerStyle.MarkerUpperAlpha)
            {
                return sb.ToString(); 
            }
            else 
            { 
                return sb.ToString().ToLower(CultureInfo.InvariantCulture);
            } 
        }

        // Convert byte to the hex data(0x3a ==> 0x33 and 0x61)
        internal static void ByteToHex(byte byteData, out byte firstHexByte, out byte secondHexByte) 
        {
            firstHexByte = (byte)((byteData >> 4) & 0x0f); 
            secondHexByte = (byte)(byteData & 0x0f); 

            // First hex digit 
            if (firstHexByte >= 0x00 && firstHexByte <= 0x09)
            {
                firstHexByte += 0x30;
            } 
            else if (firstHexByte >= 0xa && firstHexByte <= 0xf)
            { 
                firstHexByte += 'a' - 0xa; 
            }
 
            // Second hex digit
            if (secondHexByte >= 0x00 && secondHexByte <= 0x09)
            {
                secondHexByte += 0x30; 
            }
            else if (secondHexByte >= 0xa && secondHexByte <= 0xf) 
            { 
                secondHexByte += 'a' - 0xa;
            } 
        }
    };

    internal static class Validators 
    {
        internal static bool IsValidFontSize(long fs) 
        { 
            return fs >= 0 && fs <= 0x7FFF;
        } 

        internal static bool IsValidWidthType(long wt)
        {
            return wt >= 0 && wt <= 3; 
        }
 
        internal static long MakeValidShading(long s) 
        {
            if (s > 10000) s = 10000; 
            return s;
        }

        internal static long MakeValidBorderWidth(long w) 
        {
            // Word's UI only supports values from 0 to 120.  But it will actually render larger 
            // values, so let's maintain them through the converter (but still have some kind of limit). 
            if (w < 0)
            { 
                w = 0;
            }
            if (w > 1440)
            { 
                w = 1440;
            } 
            return w; 
        }
    }; 

    /// 
    /// FormatState
    ///  
    internal class FormatState
    { 
        //----------------------------------------------------- 
        //
        //  Constructors 
        //
        //-----------------------------------------------------

        #region Constructors 

        internal FormatState() 
        { 
            // Other settings
            _dest = RtfDestination.DestNormal; 
            _stateSkip = 1;

            // Font settings
            SetCharDefaults(); 

            // Para settings 
            SetParaDefaults(); 

            // Row settings 
            SetRowDefaults();
        }

        internal FormatState(FormatState formatState) 
        {
            // Font settings 
            Bold = formatState.Bold; 
            Italic = formatState.Italic;
            Engrave = formatState.Engrave; 
            Shadow = formatState.Shadow;
            SCaps = formatState.SCaps;
            Outline = formatState.Outline;
            Super = formatState.Super; 
            Sub = formatState.Sub;
            SuperOffset = formatState.SuperOffset; 
            FontSize = formatState.FontSize; 
            Font = formatState.Font;
            CodePage = formatState.CodePage; 
            CF = formatState.CF;
            CB = formatState.CB;
            DirChar = formatState.DirChar;
            UL = formatState.UL; 
            Strike = formatState.Strike;
            Expand = formatState.Expand; 
            Lang = formatState.Lang; 
            LangFE = formatState.LangFE;
            LangCur = formatState.LangCur; 
            FontSlot = formatState.FontSlot;

            // Para settings
            SB = formatState.SB; 
            SA = formatState.SA;
            FI = formatState.FI; 
            RI = formatState.RI; 
            LI = formatState.LI;
            SL = formatState.SL; 
            SLMult = formatState.SLMult;
            HAlign = formatState.HAlign;
            ILVL = formatState.ILVL;
            ITAP = formatState.ITAP; 
            ILS = formatState.ILS;
            DirPara = formatState.DirPara; 
            CFPara = formatState.CFPara; 
            CBPara = formatState.CBPara;
            ParaShading = formatState.ParaShading; 
            Marker = formatState.Marker;
            IsContinue = formatState.IsContinue;
            StartIndex = formatState.StartIndex;
            StartIndexDefault = formatState.StartIndexDefault; 
            IsInTable = formatState.IsInTable;
            _pb = formatState.HasParaBorder ? new ParaBorder(formatState.ParaBorder) : null; 
 
            // Row settings
            // For performance reasons, we don't make a full copy of the Row format information.  The implication 
            // of this is that changes to row format data will propagate back up from nested scopes, which is not
            // according to the strict semantics.  But in practice, all new rows are explicitly cleared with the
            // \trowd keyword, which clears this, so this should be fine.
            RowFormat = formatState._rowFormat; 

            // Other 
            RtfDestination = formatState.RtfDestination; 
            IsHidden = formatState.IsHidden;
 
            _stateSkip = formatState.UnicodeSkip;
        }

        #endregion Constructors 

        //------------------------------------------------------ 
        // 
        //  Internal Methods
        // 
        //-----------------------------------------------------

        #region Internal Methods
 
        internal void SetCharDefaults()
        { 
            _fBold = false; 
            _fItalic = false;
            _fEngrave = false; 
            _fShadow = false;
            _fScaps = false;
            _fOutline = false;
            _fSub = false; 
            _fSuper = false;
            _superOffset = 0; 
            _fs = 24;           // Default for RTF 
            _font = -1;
            _codePage = -1; 
            _cf = -1;
            _cb = -1;
            _dirChar = DirState.DirLTR;
            _ul = ULState.ULNone; 
            _strike = StrikeState.StrikeNone;
            _expand = 0; 
            _fHidden = false; 
            _lang = -1;
            _langFE = -1; 
            _langCur = -1;
            _fontSlot = FontSlot.LOCH;
        }
 
        internal void SetParaDefaults()
        { 
            _sb = 0; 
            _sa = 0;
            _fi = 0; 
            _ri = 0;
            _li = 0;
            _align = HAlign.AlignDefault;
            _ilvl = 0; 
            _pnlvl = 0;
            _itap = 0; 
            _ils = -1; 
            _dirPara = DirState.DirLTR;
            _cbPara = -1; 
            _nParaShading = -1;
            _cfPara = -1;
            _marker = MarkerStyle.MarkerNone;
            _fContinue = false; 
            _nStartIndex = -1;
            _nStartIndexDefault = -1; 
            _sl = 0; 
            _slMult = false;
            _pb = null; 

            _fInTable = false;
        }
 
        internal void SetRowDefaults()
        { 
            // Just toss old info 
            RowFormat = null;
        } 

        internal bool IsEqual(FormatState formatState)
        {
            return 
                // Font Settings
                   Bold == formatState.Bold 
                && Italic == formatState.Italic 
                && Engrave == formatState.Engrave
                && Shadow == formatState.Shadow 
                && SCaps == formatState.SCaps
                && Outline == formatState.Outline
                && Super == formatState.Super
                && Sub == formatState.Sub 
                && SuperOffset == formatState.SuperOffset
                && FontSize == formatState.FontSize 
                && Font == formatState.Font 
                && CodePage == formatState.CodePage
                && CF == formatState.CF 
                && CB == formatState.CB
                && DirChar == formatState.DirChar
                && UL == formatState.UL
                && Strike == formatState.Strike 
                && Expand == formatState.Expand
                && Lang == formatState.Lang 
                && LangFE == formatState.LangFE 
                && LangCur == formatState.LangCur
                && FontSlot == formatState.FontSlot 

                // Para settings
                && SB == formatState.SB
                && SA == formatState.SA 
                && FI == formatState.FI
                && RI == formatState.RI 
                && LI == formatState.LI 
                && HAlign == formatState.HAlign
                && ILVL == formatState.ILVL 
                && ITAP == formatState.ITAP
                && ILS == formatState.ILS
                && DirPara == formatState.DirPara
                && CFPara == formatState.CFPara 
                && CBPara == formatState.CBPara
                && ParaShading == formatState.ParaShading 
                && Marker == formatState.Marker 
                && IsContinue == formatState.IsContinue
                && StartIndex == formatState.StartIndex 
                && StartIndexDefault == formatState.StartIndexDefault
                && SL == formatState.SL
                && SLMult == formatState.SLMult
                && IsInTable == formatState.IsInTable 

                // Don't include para borders in this test 
 
                // Row Settings
                // Don't include row settings in this test. 

                // Other
                && RtfDestination == formatState.RtfDestination
                && IsHidden == formatState.IsHidden 
                && UnicodeSkip == formatState.UnicodeSkip;
        } 
 
        static internal FormatState EmptyFormatState
        { 
            get
            {
                if (_fsEmptyState == null)
                { 
                    _fsEmptyState = new FormatState();
                    _fsEmptyState.FontSize = -1; 
                } 

                return _fsEmptyState; 
            }
        }

        internal string GetBorderAttributeString(ConverterState converterState) 
        {
            if (HasParaBorder) 
            { 
                return ParaBorder.GetBorderAttributeString(converterState);
            } 
            else
            {
                return string.Empty;
            } 
        }
 
        #endregion Internal Methods 

        //------------------------------------------------------ 
        //
        //  Internal Properties
        //
        //------------------------------------------------------ 

        #region Internal Properties 
 
        // Random Stacked Properties
        internal RtfDestination RtfDestination 
        {
            get
            {
                return _dest; 
            }
            set 
            { 
                _dest = value;
            } 
        }

        internal bool IsHidden
        { 
            get
            { 
                return _fHidden; 
            }
            set 
            {
                _fHidden = value;
            }
        } 

        internal bool IsContentDestination 
        { 
            get
            { 
                return _dest == RtfDestination.DestNormal
                    || _dest == RtfDestination.DestFieldResult
                    || _dest == RtfDestination.DestShapeResult
                    || _dest == RtfDestination.DestShape 
                    || _dest == RtfDestination.DestListText;
            } 
        } 

        // Character Style 
        internal bool Bold
        {
            get
            { 
                return _fBold;
            } 
            set 
            {
                _fBold = value; 
            }
        }

        internal bool Italic 
        {
            get 
            { 
                return _fItalic;
            } 
            set
            {
                _fItalic = value;
            } 
        }
 
        internal bool Engrave 
        {
            get 
            {
                return _fEngrave;
            }
            set 
            {
                _fEngrave = value; 
            } 
        }
 
        internal bool Shadow
        {
            get
            { 
                return _fShadow;
            } 
            set 
            {
                _fShadow = value; 
            }
        }

        internal bool SCaps 
        {
            get 
            { 
                return _fScaps;
            } 
            set
            {
                _fScaps = value;
            } 
        }
 
        internal bool Outline 
        {
            get 
            {
                return _fOutline;
            }
            set 
            {
                _fOutline = value; 
            } 
        }
 
        internal bool Sub
        {
            get
            { 
                return _fSub;
            } 
            set 
            {
                _fSub = value; 
            }
        }

        internal bool Super 
        {
            get 
            { 
                return _fSuper;
            } 
            set
            {
                _fSuper = value;
            } 
        }
 
        internal long SuperOffset 
        {
            get 
            {
                return _superOffset;
            }
            set 
            {
                _superOffset = value; 
            } 
        }
 
        internal long FontSize
        {
            get
            { 
                return _fs;
            } 
            set 
            {
                _fs = value; 
            }
        }

        internal long Font 
        {
            get 
            { 
                return _font;
            } 
            set
            {
                _font = value;
            } 
        }
 
        internal int CodePage 
        {
            get 
            {
                return _codePage;
            }
            set 
            {
                _codePage = value; 
            } 
        }
 
        internal long CF
        {
            get
            { 
                return _cf;
            } 
            set 
            {
                _cf = value; 
            }
        }

        internal long CB 
        {
            get 
            { 
                return _cb;
            } 
            set
            {
                _cb = value;
            } 
        }
 
        internal DirState DirChar 
        {
            get 
            {
                return _dirChar;
            }
            set 
            {
                _dirChar = value; 
            } 
        }
 
        internal ULState UL
        {
            get
            { 
                return _ul;
            } 
            set 
            {
                _ul = value; 
            }
        }

        internal StrikeState Strike 
        {
            get 
            { 
                return _strike;
            } 
            set
            {
                _strike = value;
            } 
        }
 
        internal long Expand 
        {
            get 
            {
                return _expand;
            }
            set 
            {
                _expand = value; 
            } 
        }
 
        internal long Lang
        {
            get
            { 
                return _lang;
            } 
            set 
            {
                _lang = value; 
            }
        }

        internal long LangFE 
        {
            get 
            { 
                return _langFE;
            } 
            set
            {
                _langFE = value;
            } 
        }
 
        internal long LangCur 
        {
            get 
            {
                return _langCur;
            }
            set 
            {
                _langCur = value; 
            } 
        }
 
        internal FontSlot FontSlot
        {
            get
            { 
                return _fontSlot;
            } 
            set 
            {
                _fontSlot = value; 
            }
        }

        // Paragraph Style 
        internal long SB
        { 
            get 
            {
                return _sb; 
            }
            set
            {
                _sb = value; 
            }
        } 
 
        internal long SA
        { 
            get
            {
                return _sa;
            } 
            set
            { 
                _sa = value; 
            }
        } 

        internal long FI
        {
            get 
            {
                return _fi; 
            } 
            set
            { 
                _fi = value;
            }
        }
 
        internal long RI
        { 
            get 
            {
                return _ri; 
            }
            set
            {
                _ri = value; 
            }
        } 
 
        internal long LI
        { 
            get
            {
                return _li;
            } 
            set
            { 
                _li = value; 
            }
        } 

        internal HAlign HAlign
        {
            get 
            {
                return _align; 
            } 
            set
            { 
                _align = value;
            }
        }
 
        internal long ILVL
        { 
            get 
            {
                return _ilvl; 
            }
            set
            {
                if (value >= 0 && value <= MAX_LIST_DEPTH) 
                {
                    _ilvl = value; 
                } 
            }
        } 

        internal long PNLVL
        {
            get 
            {
                return _pnlvl; 
            } 
            set
            { 
                _pnlvl = value;
            }
        }
 
        internal long ITAP
        { 
            get 
            {
                return _itap; 
            }
            set
            {
                if (value >= 0 && value <= MAX_TABLE_DEPTH) 
                {
                    _itap = value; 
                } 
            }
        } 

        internal long ILS
        {
            get 
            {
                return _ils; 
            } 
            set
            { 
                _ils = value;
            }
        }
 
        internal DirState DirPara
        { 
            get 
            {
                return _dirPara; 
            }
            set
            {
                _dirPara = value; 
            }
        } 
 
        internal long CFPara
        { 
            get
            {
                return _cfPara;
            } 
            set
            { 
                _cfPara = value; 
            }
        } 

        internal long CBPara
        {
            get 
            {
                return _cbPara; 
            } 
            set
            { 
                _cbPara = value;
            }
        }
 
        internal long ParaShading
        { 
            get 
            {
                return _nParaShading; 
            }
            set
            {
                _nParaShading = Validators.MakeValidShading(value); 
            }
        } 
 
        internal MarkerStyle Marker
        { 
            get
            {
                return _marker;
            } 
            set
            { 
                _marker = value; 
            }
        } 

        internal bool IsContinue
        {
            get 
            {
                return _fContinue; 
            } 
            set
            { 
                _fContinue = value;
            }
        }
 
        internal long StartIndex
        { 
            get 
            {
                return _nStartIndex; 
            }
            set
            {
                _nStartIndex = value; 
            }
        } 
 
        internal long StartIndexDefault
        { 
            get
            {
                return _nStartIndexDefault;
            } 
            set
            { 
                _nStartIndexDefault = value; 
            }
        } 

        internal long SL
        {
            get 
            {
                return _sl; 
            } 
            set
            { 
                _sl = value;
            }
        }
 
        internal bool SLMult
        { 
            get 
            {
                return _slMult; 
            }
            set
            {
                _slMult = value; 
            }
        } 
 
        internal bool IsInTable
        { 
            get
            {
                return _fInTable;
            } 
            set
            { 
                _fInTable = value; 
            }
        } 

        internal long TableLevel
        {
            get 
            {
                if (_fInTable || _itap > 0) 
                { 
                    return _itap > 0 ? _itap : 1;
                } 
                else
                {
                    return 0;
                } 
            }
        } 
 
        internal long ListLevel
        { 
            get
            {
                if (_ils >= 0 || _ilvl > 0)
                { 
                    return _ilvl > 0 ? _ilvl + 1 : 1;
                } 
                else if (PNLVL > 0) 
                {
                    return PNLVL; 
                }
                else if (_marker != MarkerStyle.MarkerNone)
                {
                    return 1; 
                }
                else 
                { 
                    return 0;
                } 
            }
        }

        internal int UnicodeSkip 
        {
            get 
            { 
                return _stateSkip;
            } 
            set
            {
                if (value >= 0 && value < 0xffff)
                { 
                    _stateSkip = value;
                } 
            } 
        }
 
        internal RowFormat RowFormat
        {
            get
            { 
                // Allocate on access.
                if (_rowFormat == null) 
                { 
                    _rowFormat = new RowFormat();
                } 

                return _rowFormat;
            }
            set 
            {
                _rowFormat = value; 
            } 
        }
 
        internal bool HasRowFormat
        {
            get
            { 
                return _rowFormat != null;
            } 
        } 

        internal ParaBorder ParaBorder 
        {
            get
            {
                if (_pb == null) 
                {
                    _pb = new ParaBorder(); 
                } 
                return _pb;
            } 
        }

        internal bool HasParaBorder
        { 
            get
            { 
                return _pb != null && !_pb.IsNone; 
            }
        } 

        // Image type property
        internal RtfImageFormat ImageFormat
        { 
            get
            { 
                return _imageFormat; 
            }
            set 
            {
                _imageFormat = value;
            }
        } 

        // Image source name property 
        internal string ImageSource 
        {
            get 
            {
                return _imageSource;
            }
            set 
            {
                _imageSource = value; 
            } 
        }
 
        // Image width property
        internal double ImageWidth
        {
            get 
            {
                return _imageWidth; 
            } 
            set
            { 
                _imageWidth = value;
            }
        }
 
        // Image height property
        internal double ImageHeight 
        { 
            get
            { 
                return _imageHeight;
            }
            set
            { 
                _imageHeight = value;
            } 
        } 

        // Image width property 
        internal double ImageScaleWidth
        {
            get
            { 
                return _imageScaleWidth;
            } 
            set 
            {
                _imageScaleWidth = value; 
            }
        }

        // Image height property 
        internal double ImageScaleHeight
        { 
            get 
            {
                return _imageScaleHeight; 
            }
            set
            {
                _imageScaleHeight = value; 
            }
        } 
 
        // IsImageDataBinary: The default is false that is hex data for image
        internal bool IsImageDataBinary 
        {
            get
            {
                return _isImageDataBinary; 
            }
            set 
            { 
                _isImageDataBinary = value;
            } 
        }

        // Image stretch property to apply scale factor
        internal string ImageStretch 
        {
            get 
            { 
                return _imageStretch;
            } 
            set
            {
                _imageStretch = value;
            } 
        }
 
        // Image stretch direction property to apply scale factor 
        internal string ImageStretchDirection
        { 
            get
            {
                return _imageStretchDirection;
            } 
            set
            { 
                _imageStretchDirection = value; 
            }
        } 

        #endregion Internal Properties

        //----------------------------------------------------- 
        //
        //  Private Fields 
        // 
        //------------------------------------------------------
 
        #region Private Fields

        private RtfDestination _dest;
        private bool _fBold; 
        private bool _fItalic;
        private bool _fSuper; 
        private bool _fSub; 
        private bool _fOutline;
        private bool _fEngrave; 
        private bool _fShadow;
        private bool _fScaps;

        private long _fs;                // Font size in half points 
        private long _font;              // Index into font table
        private int _codePage;           // Cache of code page from font 
        private long _superOffset;       // Sub/super offset 
        private long _cf;                // Foreground color index
        private long _cb;                // Background color index 
        private DirState _dirChar;       // Character level direction
        private ULState _ul;
        private StrikeState _strike;
        private long _expand; 
        private long _lang;
        private long _langFE; 
        private long _langCur; 
        private FontSlot _fontSlot;
 
        // Para style flags and values
        private long _sa;                // Space After
        private long _sb;                // Space Before
        private long _li;                // Left Indent 
        private long _ri;               // Right Indent
        private long _fi;                // First Indent 
        private HAlign _align;            // Paragraph alignment 
        private long _ils;                // List override index
        private long _ilvl;                // 0-based List level 
        private long _pnlvl;                // 1-based old style List level
        private long _itap;                // Table level
        private DirState _dirPara;        // Paragraph level direction
        private long _cfPara;            // Paragraph fill color 
        private long _cbPara;            // Paragraph pattern background color
        private long _nParaShading;     // Paragraph shading in 100's of a percent 
        private MarkerStyle _marker;    // Type of bullet for old-style RTF 
        private bool _fContinue;        // Continue list numbering? (without number)
        private long _nStartIndex;      // List start index 
        private long _nStartIndexDefault;      // List start index default value
        private long _sl;
        private bool _slMult;
        private ParaBorder _pb; 

        private bool _fInTable;         // Paragraph is in table 
        private bool _fHidden;          // Hidden text 

        private int _stateSkip; 

        private RowFormat _rowFormat;

        private static FormatState _fsEmptyState = null; 

        // Image property fields 
        private RtfImageFormat _imageFormat; 
        private string _imageSource;
        private double _imageWidth; 
        private double _imageHeight;
        private double _imageScaleWidth;
        private double _imageScaleHeight;
        private bool _isImageDataBinary; 
        private string _imageStretch;
        private string _imageStretchDirection; 
 
        #endregion Private Fields
 
        //-----------------------------------------------------
        //
        //  Private Const
        // 
        //-----------------------------------------------------
 
        #region Private Const 

        private const int MAX_LIST_DEPTH = 32; 
        private const int MAX_TABLE_DEPTH = 32;

        #endregion Private Const
 
    }
 
    internal enum BorderType 
    {
        BorderNone, 
        BorderSingle,
        BorderDouble
        // ... lots more
    } 

    internal class BorderFormat 
    { 
        internal BorderFormat()
        { 
            SetDefaults();
        }

        internal BorderFormat(BorderFormat cb) 
        {
            CF = cb.CF; 
            Width = cb.Width; 
            Type = cb.Type;
        } 

        //-----------------------------------------------------
        //
        //  Internal Properties 
        //
        //------------------------------------------------------ 
 
        #region Internal Properties
 
        internal long CF
        {
            get
            { 
                return _cf;
            } 
            set 
            {
                _cf = value; 
            }
        }

        internal long Width 
        {
            get 
            { 
                return _width;
            } 
            set
            {
                _width = Validators.MakeValidBorderWidth(value);
            } 
        }
 
        internal long EffectiveWidth 
        {
            get 
            {
                switch (Type)
                {
                    case BorderType.BorderNone: return 0; 
                    case BorderType.BorderDouble: return Width * 2;
                    default: 
                    case BorderType.BorderSingle: return Width; 
                }
            } 
        }

        internal BorderType Type
        { 
            get
            { 
                return _type; 
            }
            set 
            {
                _type = value;
            }
        } 

        internal bool IsNone 
        { 
            get
            { 
                return EffectiveWidth <= 0 || Type == BorderType.BorderNone;
            }
        }
 
        internal string RTFEncoding
        { 
            get 
            {
                StringBuilder sb = new StringBuilder(); 

                if (IsNone)
                {
                    sb.Append("\\brdrnone"); 
                }
                else 
                { 
                    sb.Append("\\brdrs\\brdrw");
                    sb.Append(EffectiveWidth.ToString(CultureInfo.InvariantCulture)); 
                    if (CF >= 0)
                    {
                        sb.Append("\\brdrcf");
                        sb.Append(CF.ToString(CultureInfo.InvariantCulture)); 
                    }
                } 
 
                return sb.ToString();
            } 
        }

        static internal BorderFormat EmptyBorderFormat
        { 
            get
            { 
                if (_emptyBorderFormat == null) 
                {
                    _emptyBorderFormat = new BorderFormat(); 
                }
                return _emptyBorderFormat;
            }
        } 

        #endregion Internal Properties 
 
        //-----------------------------------------------------
        // 
        //  Internal Methods
        //
        //------------------------------------------------------
 
        #region Internal Methods
 
        internal void SetDefaults() 
        {
            _cf = -1; 
            _width = 0;
            _type = BorderType.BorderNone;
        }
 
        #endregion Internal Methods
 
        private long _cf; 
        private long _width;
        private BorderType _type; 
        static private BorderFormat _emptyBorderFormat = null;
    }

    internal class ParaBorder 
    {
        internal ParaBorder() 
        { 
            BorderLeft = new BorderFormat();
            BorderTop = new BorderFormat(); 
            BorderRight = new BorderFormat();
            BorderBottom = new BorderFormat();
            BorderAll = new BorderFormat();
            Spacing = 0; 
        }
 
        internal ParaBorder(ParaBorder pb) 
        {
            BorderLeft = new BorderFormat(pb.BorderLeft); 
            BorderTop = new BorderFormat(pb.BorderTop);
            BorderRight = new BorderFormat(pb.BorderRight);
            BorderBottom = new BorderFormat(pb.BorderBottom);
            BorderAll = new BorderFormat(pb.BorderAll); 
            Spacing = pb.Spacing;
        } 
 
        //------------------------------------------------------
        // 
        //  Internal Properties
        //
        //-----------------------------------------------------
 
        #region Internal Properties
 
        internal BorderFormat BorderLeft 
        {
            get 
            {
                return _bfLeft;
            }
            set 
            {
                _bfLeft = value; 
            } 
        }
 
        internal BorderFormat BorderTop
        {
            get
            { 
                return _bfTop;
            } 
            set 
            {
                _bfTop = value; 
            }
        }

        internal BorderFormat BorderRight 
        {
            get 
            { 
                return _bfRight;
            } 
            set
            {
                _bfRight = value;
            } 
        }
 
        internal BorderFormat BorderBottom 
        {
            get 
            {
                return _bfBottom;
            }
            set 
            {
                _bfBottom = value; 
            } 
        }
 
        internal BorderFormat BorderAll
        {
            get
            { 
                return _bfAll;
            } 
            set 
            {
                _bfAll = value; 
            }
        }

        internal long Spacing 
        {
            get 
            { 
                return _nSpacing;
            } 
            set
            {
                _nSpacing = value;
            } 
        }
 
        internal long CF 
        {
            get 
            {
                return BorderLeft.CF;
            }
            set 
            {
                BorderLeft.CF = value; 
                BorderTop.CF = value; 
                BorderRight.CF = value;
                BorderBottom.CF = value; 
                BorderAll.CF = value;
            }
        }
 
        internal bool IsNone
        { 
            get 
            {
                return BorderLeft.IsNone && BorderTop.IsNone 
                    && BorderRight.IsNone && BorderBottom.IsNone
                    && BorderAll.IsNone;
            }
        } 

        internal string GetBorderAttributeString(ConverterState converterState) 
        { 
            if (IsNone)
            { 
                return string.Empty;
            }

            // Build the border attribute string based on border values 
            StringBuilder sb = new StringBuilder();
 
            // Left,Top,Right,Bottom 
            sb.Append(" BorderThickness=\"");
            if (!BorderAll.IsNone) 
            {
                sb.Append(Converters.TwipToPositiveVisiblePxString(BorderAll.EffectiveWidth));
            }
            else 
            {
                sb.Append(Converters.TwipToPositiveVisiblePxString(BorderLeft.EffectiveWidth)); 
                sb.Append(","); 
                sb.Append(Converters.TwipToPositiveVisiblePxString(BorderTop.EffectiveWidth));
                sb.Append(","); 
                sb.Append(Converters.TwipToPositiveVisiblePxString(BorderRight.EffectiveWidth));
                sb.Append(",");
                sb.Append(Converters.TwipToPositiveVisiblePxString(BorderBottom.EffectiveWidth));
            } 
            sb.Append("\"");
 
            ColorTableEntry entry = null; 
            if (CF >= 0)
            { 
                entry = converterState.ColorTable.EntryAt((int)CF);
            }

            if (entry != null) 
            {
                sb.Append(" BorderBrush=\""); 
                sb.Append(entry.Color.ToString()); 
                sb.Append("\"");
            } 
            else
            {
                sb.Append(" BorderBrush=\"#FF000000\"");
            } 

            if (Spacing != 0) 
            { 
                sb.Append(" Padding=\"");
                sb.Append(Converters.TwipToPositivePxString(Spacing)); 
                sb.Append("\"");
            }

            return sb.ToString(); 
        }
 
        internal string RTFEncoding 
        {
            get 
            {
                StringBuilder sb = new StringBuilder();

                if (IsNone) 
                {
                    sb.Append("\\brdrnil"); 
                } 
                else
                { 
                    sb.Append("\\brdrl");
                    sb.Append(BorderLeft.RTFEncoding);
                    if (BorderLeft.CF >= 0)
                    { 
                        sb.Append("\\brdrcf");
                        sb.Append(BorderLeft.CF.ToString(CultureInfo.InvariantCulture)); 
                    } 
                    sb.Append("\\brdrt");
                    sb.Append(BorderTop.RTFEncoding); 
                    if (BorderTop.CF >= 0)
                    {
                        sb.Append("\\brdrcf");
                        sb.Append(BorderTop.CF.ToString(CultureInfo.InvariantCulture)); 
                    }
                    sb.Append("\\brdrr"); 
                    sb.Append(BorderRight.RTFEncoding); 
                    if (BorderRight.CF >= 0)
                    { 
                        sb.Append("\\brdrcf");
                        sb.Append(BorderRight.CF.ToString(CultureInfo.InvariantCulture));
                    }
                    sb.Append("\\brdrb"); 
                    sb.Append(BorderBottom.RTFEncoding);
                    if (BorderBottom.CF >= 0) 
                    { 
                        sb.Append("\\brdrcf");
                        sb.Append(BorderBottom.CF.ToString(CultureInfo.InvariantCulture)); 
                    }
                    sb.Append("\\brsp");
                    sb.Append(Spacing.ToString(CultureInfo.InvariantCulture));
                } 

                return sb.ToString(); 
            } 
        }
 
        #endregion Internal Properties

        //------------------------------------------------------
        // 
        //  Private Fields
        // 
        //----------------------------------------------------- 

        #region Private Fields 

        private BorderFormat _bfLeft;
        private BorderFormat _bfTop;
        private BorderFormat _bfRight; 
        private BorderFormat _bfBottom;
        private BorderFormat _bfAll; 
        private long _nSpacing; 

        #endregion Private Fields 
    }

    internal enum WidthType
    { 
        WidthIgnore = 0,
        WidthAuto = 1, 
        WidthPercent = 2,   // Actually 50ths 
        WidthTwips = 3
    } 

    internal class CellWidth
    {
        internal CellWidth() 
        {
            Type = WidthType.WidthAuto; 
            Value = 0; 
        }
 
        internal CellWidth(CellWidth cw)
        {
            Type = cw.Type;
            Value = cw.Value; 
        }
 
        internal WidthType Type 
        {
            get 
            {
                return _type;
            }
            set 
            {
                _type = value; 
            } 
        }
 
        internal long Value
        {
            get
            { 
                return _value;
            } 
            set 
            {
                _value = value; 
            }
        }

        internal void SetDefaults() 
        {
            Type = WidthType.WidthAuto; 
            Value = 0; 
        }
 
        private WidthType _type;
        private long _value;
    }
 
    internal class CellFormat
    { 
        internal CellFormat() 
        {
            BorderLeft = new BorderFormat(); 
            BorderRight = new BorderFormat();
            BorderBottom = new BorderFormat();
            BorderTop = new BorderFormat();
 
            Width = new CellWidth();
 
            SetDefaults(); 

            IsPending = true; 
        }

        internal CellFormat(CellFormat cf)
        { 
            CellX = cf.CellX;
            IsCellXSet = cf.IsCellXSet; 
            Width = new CellWidth(cf.Width); 
            CB = cf.CB;
            CF = cf.CF; 
            Shading = cf.Shading;
            PaddingTop = cf.PaddingTop;
            PaddingBottom = cf.PaddingBottom;
            PaddingRight = cf.PaddingRight; 
            PaddingLeft = cf.PaddingLeft;
            BorderLeft = new BorderFormat(cf.BorderLeft); 
            BorderRight = new BorderFormat(cf.BorderRight); 
            BorderBottom = new BorderFormat(cf.BorderBottom);
            BorderTop = new BorderFormat(cf.BorderTop); 
            SpacingTop = cf.SpacingTop;
            SpacingBottom = cf.SpacingBottom;
            SpacingRight = cf.SpacingRight;
            SpacingLeft = cf.SpacingLeft; 
            VAlign = VAlign.AlignTop;
            IsPending = true; 
            IsHMerge = cf.IsHMerge; 
            IsHMergeFirst = cf.IsHMergeFirst;
            IsVMerge = cf.IsVMerge; 
            IsVMergeFirst = cf.IsVMergeFirst;
        }

        //----------------------------------------------------- 
        //
        //  Internal Properties 
        // 
        //-----------------------------------------------------
 
        #region Internal Properties

        internal long CB
        { 
            get
            { 
                return _cb; 
            }
            set 
            {
                _cb = value;
            }
        } 

        internal long CF 
        { 
            get
            { 
                return _cf;
            }
            set
            { 
                _cf = value;
            } 
        } 

        internal long Shading 
        {
            get
            {
                return _nShading; 
            }
            set 
            { 
                _nShading = Validators.MakeValidShading(value);
            } 
        }

        internal long PaddingLeft
        { 
            get
            { 
                return _padL; 
            }
            set 
            {
                _padL = value;
            }
        } 

        internal long PaddingRight 
        { 
            get
            { 
                return _padR;
            }
            set
            { 
                _padR = value;
            } 
        } 

        internal long PaddingTop 
        {
            get
            {
                return _padT; 
            }
            set 
            { 
                _padT = value;
            } 
        }

        internal long PaddingBottom
        { 
            get
            { 
                return _padB; 
            }
            set 
            {
                _padB = value;
            }
        } 

        internal BorderFormat BorderTop 
        { 
            get
            { 
                return _brdT;
            }
            set
            { 
                _brdT = value;
            } 
        } 

        internal BorderFormat BorderBottom 
        {
            get
            {
                return _brdB; 
            }
            set 
            { 
                _brdB = value;
            } 
        }

        internal BorderFormat BorderLeft
        { 
            get
            { 
                return _brdL; 
            }
            set 
            {
                _brdL = value;
            }
        } 

        internal BorderFormat BorderRight 
        { 
            get
            { 
                return _brdR;
            }
            set
            { 
                _brdR = value;
            } 
        } 

        internal CellWidth Width 
        {
            get
            {
                return _width; 
            }
            set 
            { 
                _width = value;
            } 
        }

        internal long CellX
        { 
            get
            { 
                return _nCellX; 
            }
            set 
            {
                _nCellX = value;
                _fCellXSet = true;
            } 
        }
 
        internal bool IsCellXSet 
        {
            get 
            {
                return _fCellXSet;
            }
            set 
            {
                _fCellXSet = value; 
            } 
        }
 
        internal VAlign VAlign
        {
            set
            { 
                _valign = value;
            } 
        } 

        internal long SpacingTop 
        {
            get
            {
                return _spaceT; 
            }
            set 
            { 
                _spaceT = value;
            } 
        }

        internal long SpacingLeft
        { 
            get
            { 
                return _spaceL; 
            }
            set 
            {
                _spaceL = value;
            }
        } 

        internal long SpacingBottom 
        { 
            get
            { 
                return _spaceB;
            }
            set
            { 
                _spaceB = value;
            } 
        } 

        internal long SpacingRight 
        {
            get
            {
                return _spaceR; 
            }
            set 
            { 
                _spaceR = value;
            } 
        }

        internal bool IsPending
        { 
            get
            { 
                return _fPending; 
            }
            set 
            {
                _fPending = value;
            }
        } 

        internal bool IsHMerge 
        { 
            get
            { 
                return _fHMerge;
            }
            set
            { 
                _fHMerge = value;
            } 
        } 

        internal bool IsHMergeFirst 
        {
            get
            {
                return _fHMergeFirst; 
            }
            set 
            { 
                _fHMergeFirst = value;
            } 
        }

        internal bool IsVMerge
        { 
            get
            { 
                return _fVMerge; 
            }
            set 
            {
                _fVMerge = value;
            }
        } 

        internal bool IsVMergeFirst 
        { 
            get
            { 
                return _fVMergeFirst;
            }
            set
            { 
                _fVMergeFirst = value;
            } 
        } 

        internal bool HasBorder 
        {
            get
            {
                return BorderLeft.EffectiveWidth > 0 
                        || BorderRight.EffectiveWidth > 0
                        || BorderTop.EffectiveWidth > 0 
                        || BorderBottom.EffectiveWidth > 0; 
            }
        } 

        internal string RTFEncodingForWidth
        {
            get 
            {
                StringBuilder sb = new StringBuilder(); 
 
                sb.Append("\\clftsWidth");
                int t = (int)Width.Type; 
                sb.Append(t.ToString(CultureInfo.InvariantCulture));
                sb.Append("\\clwWidth");
                sb.Append(Width.Value.ToString(CultureInfo.InvariantCulture));
                sb.Append("\\cellx"); 
                sb.Append(CellX.ToString(CultureInfo.InvariantCulture));
 
                return sb.ToString(); 
            }
        } 

        #endregion Internal Properties

        //------------------------------------------------------ 
        //
        //  Internal Methods 
        // 
        //-----------------------------------------------------
 
        #region Internal Methods

        internal void SetDefaults()
        { 
            CellX = -1;
            IsCellXSet = false; 
            Width.SetDefaults(); 
            CB = -1;
            CF = -1; 
            Shading = -1;
            PaddingTop = 0;
            PaddingBottom = 0;
            PaddingRight = 0; 
            PaddingLeft = 0;
            BorderLeft.SetDefaults(); 
            BorderRight.SetDefaults(); 
            BorderBottom.SetDefaults();
            BorderTop.SetDefaults(); 
            SpacingTop = 0;
            SpacingBottom = 0;
            SpacingRight = 0;
            SpacingLeft = 0; 
            VAlign = VAlign.AlignTop;
            IsHMerge = false; 
            IsHMergeFirst = false; 
            IsVMerge = false;
            IsVMergeFirst = false; 
        }

        internal string GetBorderAttributeString(ConverterState converterState)
        { 
            Debug.Assert(HasBorder);
 
            // Build the border attribute string based on border values 
            StringBuilder sb = new StringBuilder();
 
            // Left,Top,Right,Bottom
            sb.Append(" BorderThickness=\"");
            sb.Append(Converters.TwipToPositiveVisiblePxString(BorderLeft.EffectiveWidth));
            sb.Append(","); 
            sb.Append(Converters.TwipToPositiveVisiblePxString(BorderTop.EffectiveWidth));
            sb.Append(","); 
            sb.Append(Converters.TwipToPositiveVisiblePxString(BorderRight.EffectiveWidth)); 
            sb.Append(",");
            sb.Append(Converters.TwipToPositiveVisiblePxString(BorderBottom.EffectiveWidth)); 
            sb.Append("\"");

            // Only grab one color
            ColorTableEntry entry = null; 
            if (BorderLeft.CF >= 0)
            { 
                entry = converterState.ColorTable.EntryAt((int)BorderLeft.CF); 
            }
 
            if (entry != null)
            {
                sb.Append(" BorderBrush=\"");
                sb.Append(entry.Color.ToString(CultureInfo.InvariantCulture)); 
                sb.Append("\"");
            } 
            else 
            {
                sb.Append(" BorderBrush=\"#FF000000\""); 
            }

            return sb.ToString();
        } 

        internal string GetPaddingAttributeString() 
        { 
            // Build the padding attribute string based on padding values
            StringBuilder sb = new StringBuilder(); 

            // Left,Top,Right,Bottom
            sb.Append(" Padding=\"");
            sb.Append(Converters.TwipToPositivePxString(PaddingLeft)); 
            sb.Append(",");
            sb.Append(Converters.TwipToPositivePxString(PaddingTop)); 
            sb.Append(","); 
            sb.Append(Converters.TwipToPositivePxString(PaddingRight));
            sb.Append(","); 
            sb.Append(Converters.TwipToPositivePxString(PaddingBottom));
            sb.Append("\"");

            return sb.ToString(); 
        }
 
        #endregion Internal Methods 

        private long _cb; 
        private long _cf;
        private long _nShading;
        private long _padT;
        private long _padB; 
        private long _padR;
        private long _padL; 
        private long _spaceT; 
        private long _spaceB;
        private long _spaceR; 
        private long _spaceL;
        private long _nCellX;
        private CellWidth _width;
        private VAlign _valign; 
        private BorderFormat _brdL;
        private BorderFormat _brdR; 
        private BorderFormat _brdT; 
        private BorderFormat _brdB;
        private bool _fPending; 
        private bool _fHMerge;
        private bool _fHMergeFirst;
        private bool _fVMerge;
        private bool _fVMergeFirst; 
        private bool _fCellXSet;
    } 
 

    internal class RowFormat 
    {
        internal RowFormat()
        {
            _rowCellFormat = new CellFormat(); 
            _widthA = new CellWidth();
            _widthB = new CellWidth(); 
            _widthRow = new CellWidth(); 
            _cellFormats = new ArrayList();
            _dir = DirState.DirLTR; 
            _nTrgaph = -1;
            _nTrleft = 0;
        }
 
        internal RowFormat(RowFormat ri)
        { 
            _rowCellFormat = new CellFormat(ri.RowCellFormat); 
            _cellFormats = new ArrayList();
            _widthA = new CellWidth(ri.WidthA); 
            _widthB = new CellWidth(ri.WidthB);
            _widthRow = new CellWidth(ri.WidthRow);
            _nTrgaph = ri.Trgaph;
            _dir = ri.Dir; 
            _nTrleft = ri._nTrleft;
 
            for (int i = 0; i < ri.CellCount; i++) 
            {
                _cellFormats.Add(new CellFormat(ri.NthCellFormat(i))); 
            }
        }

        //------------------------------------------------------ 
        //
        //  Internal Properties 
        // 
        //------------------------------------------------------
 
        #region Internal Properties

        internal CellFormat RowCellFormat
        { 
            get
            { 
                return _rowCellFormat; 
            }
        } 

        internal int CellCount
        {
            get 
            {
                return _cellFormats.Count; 
            } 
        }
 
        internal CellFormat TopCellFormat
        {
            get
            { 
                return CellCount > 0 ? NthCellFormat(CellCount - 1) : null;
            } 
        } 

        internal CellWidth WidthA 
        {
            get
            {
                return _widthA; 
            }
        } 
 
        internal CellWidth WidthB
        { 
            get
            {
                return _widthB;
            } 
        }
 
        internal CellWidth WidthRow 
        {
            get 
            {
                return _widthRow;
            }
        } 

        internal long Trgaph 
        { 
            get
            { 
                return _nTrgaph;
            }
            set
            { 
                _nTrgaph = value;
            } 
        } 

        internal long Trleft 
        {
            get
            {
                return _nTrleft; 
            }
            set 
            { 
                _nTrleft = value;
            } 
        }

        internal DirState Dir
        { 
            get
            { 
                return _dir; 
            }
            set 
            {
                _dir = value;
            }
        } 

        internal bool IsVMerge 
        { 
            get
            { 
                for (int i = 0; i < CellCount; i++)
                {
                    if (NthCellFormat(i).IsVMerge)
                    { 
                        return true;
                    } 
                } 
                return false;
            } 
        }

        #endregion Internal Properties
 
        //-----------------------------------------------------
        // 
        //  Internal Methods 
        //
        //------------------------------------------------------ 

        #region Internal Methods

        internal CellFormat NthCellFormat(int n) 
        {
            // If asked for a cell format beyond the bounds specified, just use row defaults. 
            // This probably indicates malformed content, but makes reading more robust. 
            if (n < 0 || n >= CellCount)
            { 
                return RowCellFormat;
            }

            return (CellFormat)_cellFormats[n]; 
        }
 
        internal CellFormat NextCellFormat() 
        {
            _cellFormats.Add(new CellFormat(RowCellFormat)); 
            return TopCellFormat;
        }

        internal CellFormat CurrentCellFormat() 
        {
            if (CellCount == 0 || !TopCellFormat.IsPending) 
            { 
                return NextCellFormat();
            } 
            else
            {
                return TopCellFormat;
            } 
        }
 
        internal void CanonicalizeWidthsFromRTF() 
        {
            if (CellCount == 0) 
            {
                return;
            }
 
            CellFormat cfPrev = null;
            long cellx = Trleft; 
 
            // Make sure widths and cellx are set up.  For merged cells, the first cell in the merged set has
            // the real width while the last cell in the merged set has the real CellX.  I put the real CellX 
            // in the first merged cell so I can just use that one.
            for (int i = 0; i < CellCount; i++)
            {
                CellFormat cf = NthCellFormat(i); 

                // Ignore HMerge Cells 
                if (cf.IsHMerge) 
                {
                    continue; 
                }

                // Grab CellX from last cell in range of merged cells
                if (cf.IsHMergeFirst) 
                {
                    for (int k = i + 1; k < CellCount; k++) 
                    { 
                        CellFormat cf1 = NthCellFormat(k);
 
                        if (cf1.IsHMerge)
                        {
                            cf.CellX = cf1.CellX;
                        } 
                        else
                        { 
                            break; 
                        }
                    } 
                }

                if (cf.Width.Value == 0 && cf.IsCellXSet)
                { 
                    cf.Width.Type = WidthType.WidthTwips;
                    cf.Width.Value = (cfPrev == null) ? cf.CellX - Trleft : cf.CellX - cfPrev.CellX; 
                } 
                else if (cf.Width.Value > 0 && !cf.IsCellXSet)
                { 
                    cellx += cf.Width.Value;
                    cf.CellX = cellx;
                }
                cfPrev = cf; 
            }
 
            // It's also important that CellX be monotonic. 
            cellx = NthCellFormat(0).CellX;
            for (int i = 1; i < CellCount; i++) 
            {
                CellFormat cf = NthCellFormat(i);

                if (cf.CellX < cellx) 
                {
                    cf.CellX = cellx + 1; 
                } 
                cellx = cf.CellX;
            } 
        }

        internal void CanonicalizeWidthsFromXaml()
        { 
            long nCellX = Trleft;
 
            for (int i = 0; i < CellCount; i++) 
            {
                CellFormat cf = NthCellFormat(i); 

                if (cf.Width.Type == WidthType.WidthTwips)
                {
                    nCellX += cf.Width.Value; 
                }
                else 
                { 
                    nCellX += 1440; // arbitrary - one inch.
                } 
                cf.CellX = nCellX;
            }
        }
 
        #endregion Internal Methods
 
        private CellFormat _rowCellFormat; 
        private CellWidth _widthA;
        private CellWidth _widthB; 
        private CellWidth _widthRow;
        private ArrayList _cellFormats;
        private long _nTrgaph;
        private long _nTrleft; 
        private DirState _dir;
    } 
 

    internal class MarkerListEntry 
    {
        internal MarkerListEntry()
        {
            _marker = MarkerStyle.MarkerBullet; 
            _nILS = -1;
            _nStartIndexOverride = -1; 
            _nStartIndexDefault = -1; 
            _nVirtualListLevel = -1;
        } 

        internal MarkerStyle Marker
        {
            get 
            {
                return _marker; 
            } 
            set
            { 
                _marker = value;
            }
        }
 
        internal long StartIndexOverride
        { 
            get 
            {
                return _nStartIndexOverride; 
            }
            set
            {
                _nStartIndexOverride = value; 
            }
        } 
 
        internal long StartIndexDefault
        { 
            get
            {
                return _nStartIndexDefault;
            } 
            set
            { 
                _nStartIndexDefault = value; 
            }
        } 

        internal long VirtualListLevel
        {
            get 
            {
                return _nVirtualListLevel; 
            } 
            set
            { 
                _nVirtualListLevel = value;
            }
        }
 
        internal long StartIndexToUse
        { 
            get 
            {
                return _nStartIndexOverride > 0 ? _nStartIndexOverride : _nStartIndexDefault; 
            }
        }

        internal long ILS 
        {
            get 
            { 
                return _nILS;
            } 
            set
            {
                _nILS = value;
            } 
        }
 
        private MarkerStyle _marker; 
        private long _nStartIndexOverride;
        private long _nStartIndexDefault; 
        private long _nVirtualListLevel;
        private long _nILS;
    }
 

    internal class MarkerList : ArrayList 
    { 
        //-----------------------------------------------------
        // 
        //  Constructors
        //
        //-----------------------------------------------------
 
        #region Constructors
 
        internal MarkerList() 
            : base(5)
        { 
        }

        #endregion Constructors
 
        //-----------------------------------------------------
        // 
        //  Internal Methods 
        //
        //------------------------------------------------------ 

        #region Internal Methods

        internal MarkerListEntry EntryAt(int index) 
        {
            return (MarkerListEntry)this[index]; 
        } 

        internal void AddEntry(MarkerStyle m, long nILS, long nStartIndexOverride, long nStartIndexDefault, long nLevel) 
        {
            MarkerListEntry entry = new MarkerListEntry();

            entry.Marker = m; 
            entry.StartIndexOverride = nStartIndexOverride;
            entry.StartIndexDefault = nStartIndexDefault; 
            entry.VirtualListLevel = nLevel; 
            entry.ILS = nILS;
            Add(entry); 
        }

        #endregion Internal Methods
    } 

 
    ///  
    /// FontTableEntry
    ///  
    internal class FontTableEntry
    {
        //-----------------------------------------------------
        // 
        //  Constructors
        // 
        //------------------------------------------------------ 

        #region Constructors 

        internal FontTableEntry()
        {
            _index = -1; 
            _codePage = -1;
            _charSet = 0; 
            _bNameSealed = false; 
            _bPending = true;
        } 

        #endregion Constructors

        //------------------------------------------------------ 
        //
        //  Internal Properties 
        // 
        //-----------------------------------------------------
 
        #region Internal Properties

        internal int Index
        { 
            get
            { 
                return _index; 
            }
            set 
            {
                _index = value;
            }
        } 

        internal string Name 
        { 
            get
            { 
                return _name;
            }
            set
            { 
                _name = value;
            } 
        } 

        internal bool IsNameSealed 
        {
            get
            {
                return _bNameSealed; 
            }
            set 
            { 
                _bNameSealed = value;
            } 
        }

        internal bool IsPending
        { 
            get
            { 
                return _bPending; 
            }
            set 
            {
                _bPending = value;
            }
        } 

        internal int CodePage 
        { 
            get
            { 
                return _codePage;
            }
            set
            { 
                _codePage = value;
            } 
        } 

        internal int CodePageFromCharSet 
        {
            set
            {
                int cp = CharSetToCodePage(value); 
                if (cp != 0)
                { 
                    CodePage = cp; 
                }
            } 
        }

        internal int CharSet
        { 
            get
            { 
                return _charSet; 
            }
            set 
            {
                _charSet = value;
            }
        } 

        #endregion Internal Properties 
 
        //------------------------------------------------------
        // 
        //  Internal Methods
        //
        //-----------------------------------------------------
 
        #region Internal Methods
 
        internal static int CharSetToCodePage(int cs) 
        {
            switch (cs) 
            {
                case 0: // ANSI
                    return 1252;    // ANSI means use 1252
                case 1: // DEFAULT 
                    return -1;    // -1 means use default code page
                case 2: // Symbol 
                    return 1252;  // Symbol isn't a charset 
                case 3: // Invalid
                    return -1;    // -1 means use ansicpg 
                case 77: // Mac
                    return 10000;
                case 78:  // Shift JIS - bug in MacWord98J
                case 128: // Shift JIS 
                    return 932;
                case 129: // Hangul 
                    return 949; 
                case 130: // Johab
                    return 1361; 
                case 134: // GB2312
                    return 936;
                case 136: // Big5
                    return 950; 
                case 161: // Greek
                    return 1253; 
                case 162: // Turkish 
                    return 1254;
                case 163: // Vietnamese 
                    return 1258;
                case 177: // Hebrew
                    return 1255;
                case 178: // Arabic 
                    return 1256;
                case 179: // Arabic Traditional 
                    return 1256; 
                case 180: // Arabic user
                    return 1256; 
                case 181: // Hebrew user
                    return 1255;
                case 186: // Baltic
                    return 1257; 
                case 204: // Russian
                    return 1251; 
                case 222: // Thai 
                    return 874;
                case 238: // Eastern European 
                    return 1250;
                case 254: // PC 437
                    return 437;
                case 255: // OEM 
                    return 850;
                default: 
                    return 0; 
            }
        } 

        internal void ComputePreferredCodePage()
        {
            int[] CodePageList = { 
                1252, 932, 949, 1361, 936, 950, 1253, 1254, 1258, 1255, 1256, 1257, 1251, 874, 1250, 437, 850 };
 
            CodePage = 1252; 
            CharSet = 0;
 
            if (Name != null && Name.Length > 0)
            {
                byte[] rgBytes = new byte[Name.Length * 6];
                char[] rgChars = new char[Name.Length * 6]; 

                for (int i = 0; i < CodePageList.Length; i++) 
                { 
                    Encoding e = Encoding.GetEncoding(CodePageList[i]);
 
                    int cb = e.GetBytes(Name, 0, Name.Length, rgBytes, 0);
                    int cch = e.GetChars(rgBytes, 0, cb, rgChars, 0);

                    if (cch == Name.Length) 
                    {
                        int k = 0; 
                        for (k = 0; k < cch; k++) 
                        {
                            if (rgChars[k] != Name[k]) 
                            {
                                break;
                            }
                        } 

                        // This code page can encode this font name. 
                        if (k == cch) 
                        {
                            CodePage = CodePageList[i]; 
                            CharSet = CodePageToCharSet(CodePage);
                            break;
                        }
                    } 
                }
 
                // Set the symbol charset for symbol font 
                if (IsSymbolFont(Name))
                { 
                    CharSet = 2 /* Symbol Charset */;
                }
            }
        } 

        #endregion Internal Methods 
 
        //-----------------------------------------------------
        // 
        //  Private Methods
        //
        //-----------------------------------------------------
 
        #region Private Methods
 
        private static int CodePageToCharSet(int cp) 
        {
            switch (cp) 
            {
                case 1252: // ANSI
                    return 0;    // ANSI means use 1252
                case 10000: // Mac 
                    return 77;
                case 932: // Shift JIS 
                    return 128; 
                case 949: // Hangul
                    return 129; 
                case 1361: // Johab
                    return 130;
                case 936: // GB2312
                    return 134; 
                case 950: // Big5
                    return 136; 
                case 1253: // Greek 
                    return 161;
                case 1254: // Turkish 
                    return 162;
                case 1258: // Vietnamese
                    return 163;
                case 1255: // Hebrew 
                    return 177;
                case 1256: // Arabic 
                    return 178; 
                case 1257: // Baltic
                    return 186; 
                case 1251: // Russian
                    return 204;
                case 874: // Thai
                    return 222; 
                case 1250: // Eastern European
                    return 238; 
                case 437: // PC 437 
                    return 254;
                case 850: // OEM 
                    return 255;
                default:
                    return 0;
            } 
        }
 
        ///  
        /// Return true if the specified typeface name is the symbol font.
        ///  
        private static bool IsSymbolFont(string typefaceName)
        {
            bool isSymbolFont = false;
 
            Typeface typeface = new Typeface(typefaceName);
 
            if (typeface != null) 
            {
                GlyphTypeface glyphTypeface = typeface.TryGetGlyphTypeface(); 

                if (glyphTypeface != null && glyphTypeface.Symbol)
                {
                    isSymbolFont = true; 
                }
            } 
 
            return isSymbolFont;
        } 

        #endregion Private Methods

        //------------------------------------------------------ 
        //
        //  Private Fields 
        // 
        //-----------------------------------------------------
 
        #region Private Fields

        private string _name;
        private int _index; 
        private int _codePage;
        private int _charSet; 
        private bool _bNameSealed; 
        private bool _bPending;
 
        #endregion Private Fields
    }

    ///  
    /// FontTable that includes the font table.
    ///  
    internal class FontTable : ArrayList 
    {
        //------------------------------------------------------ 
        //
        //  Constructors
        //
        //------------------------------------------------------ 

        #region Constructors 
 
        internal FontTable()
            : base(20) 
        {
            _fontMappings = null;
        }
 
        #endregion Constructors
 
        //----------------------------------------------------- 
        //
        //  Internal Methods 
        //
        //------------------------------------------------------

        #region Internal Methods 

        internal FontTableEntry DefineEntry(int index) 
        { 
            // Might happen with bad input
            FontTableEntry entry = FindEntryByIndex(index); 

            if (entry != null)
            {
                // Re-open it 
                entry.IsPending = true;
                entry.Name = null; 
 
                return entry;
            } 

            entry = new FontTableEntry();

            entry.Index = index; 

            Add(entry); 
 
            return entry;
        } 

        internal FontTableEntry FindEntryByIndex(int index)
        {
            for (int i = 0; i < Count; i++) 
            {
                FontTableEntry entry = EntryAt(i); 
 
                if (entry.Index == index)
                { 
                    return entry;
                }
            }
 
            return null;
        } 
 
        internal FontTableEntry FindEntryByName(string name)
        { 
            for (int i = 0; i < Count; i++)
            {
                FontTableEntry entry = EntryAt(i);
 
                if (name.Equals(entry.Name))
                { 
                    return entry; 
                }
            } 

            return null;
        }
 
        internal FontTableEntry EntryAt(int index)
        { 
            return (FontTableEntry)this[index]; 
        }
 
        internal int DefineEntryByName(string name)
        {
            int maxIndex = -1;
            for (int i = 0; i < Count; i++) 
            {
                FontTableEntry entry = EntryAt(i); 
 
                if (name.Equals(entry.Name))
                { 
                    return entry.Index;
                }
                if (entry.Index > maxIndex)
                { 
                    maxIndex = entry.Index;
                } 
            } 

            // Not there - define one. 
            FontTableEntry newEntry = new FontTableEntry();
            newEntry.Index = maxIndex + 1;
            Add(newEntry);
            newEntry.Name = name; 
            return maxIndex + 1;
        } 
 
        internal void MapFonts()
        { 
            Hashtable map = FontMappings;

            for (int i = 0; i < Count; i++)
            { 
                FontTableEntry entry = EntryAt(i);
 
                if (entry.Name != null) 
                {
                    string mappedName = (string)map[entry.Name.ToLower(CultureInfo.InvariantCulture)]; 
                    if (mappedName != null)
                    {
                        entry.Name = mappedName;
                    } 
                    else
                    { 
                        int iCP = entry.Name.IndexOf('('); 
                        if (iCP >= 0)
                        { 
                            while (iCP > 0 && entry.Name[iCP - 1] == ' ')
                                iCP--;
                            entry.Name = entry.Name.Substring(0, iCP);
                        } 
                    }
                } 
            } 
        }
 
        #endregion Internal Methods

        //-----------------------------------------------------
        // 
        //  Internal Properties
        // 
        //----------------------------------------------------- 

        #region Internal Properties 

        internal FontTableEntry CurrentEntry
        {
            get 
            {
                if (Count == 0) 
                { 
                    return null;
                } 

                // Find Pending Entry
                for (int i = Count - 1; i >= 0; i--)
                { 
                    FontTableEntry entry = EntryAt(i);
 
                    if (entry.IsPending) 
                    {
                        return entry; 
                    }
                }

                return EntryAt(Count - 1); 
            }
        } 
 
        internal Hashtable FontMappings
        { 
            get
            {
                if (_fontMappings == null)
                { 
                    _fontMappings = new Hashtable();
                    RegistryKey rk = Registry.LocalMachine.OpenSubKey("Software\\Microsoft\\Windows NT\\CurrentVersion\\FontSubstitutes"); 
                    if (rk != null) 
                    {
                        string[] names = rk.GetValueNames(); 
                        foreach (string name in names)
                        {
                            string value = (string)rk.GetValue(name);
 
                            if (name.Length > 0 && value.Length > 0)
                            { 
                                string lhs_name = name; 
                                string lhs_tag = string.Empty;
                                string rhs_name = value; 
                                string rhs_tag = string.Empty;

                                int i;
                                i = name.IndexOf(','); 
                                if (i >= 0)
                                { 
                                    lhs_name = name.Substring(0, i); 
                                    lhs_tag = name.Substring(i + 1, name.Length - i - 1);
                                } 
                                i = value.IndexOf(',');
                                if (i >= 0)
                                {
                                    rhs_name = value.Substring(0, i); 
                                    rhs_tag = value.Substring(i + 1, value.Length - i - 1);
                                } 
                                if (lhs_name.Length > 0 && rhs_name.Length > 0) 
                                {
                                    bool bAdd = false; 
                                    // If both entries specify charset, they must match.
                                    if (lhs_tag.Length > 0 && rhs_tag.Length > 0)
                                    {
                                        if (string.Compare(lhs_tag, rhs_tag, StringComparison.OrdinalIgnoreCase) == 0) 
                                        {
                                            bAdd = true; 
                                        } 
                                    }
 
                                    // If neither specifies a charset, the tagged (left) entry must be a substring.
                                    else if (lhs_tag.Length == 0 && rhs_tag.Length == 0)
                                    {
                                        if (lhs_name.Length > rhs_name.Length) 
                                        {
                                            string s = lhs_name.Substring(0, rhs_name.Length); 
                                            if (string.Compare(s, rhs_name, StringComparison.OrdinalIgnoreCase) == 0) 
                                            {
                                                bAdd = true; 
                                            }
                                        }
                                    }
 
                                    // If just the name specifies the charset, use it.
                                    else if (lhs_tag.Length > 0 && rhs_tag.Length == 0) 
                                    { 
                                        bAdd = true;
                                    } 

                                    // OK, actually add the mapping.
                                    if (bAdd)
                                    { 
                                        // Don't add a new mapping if one exists
                                        string keyname = lhs_name.ToLower(CultureInfo.InvariantCulture); 
                                        if (_fontMappings[keyname] == null) 
                                        {
                                            _fontMappings.Add(keyname, rhs_name); 
                                        }
                                    }
                                }
                            } 
                        }
                    } 
                } 

                return _fontMappings; 
            }
        }

        #endregion Internal Properties 

        //----------------------------------------------------- 
        // 
        //  Private Fields
        // 
        //------------------------------------------------------

        #region Private Fields
 
        Hashtable _fontMappings;
 
        #endregion Private Fields 
    }
 
    /// 
    /// ColorTableEntry that includes color.
    /// 
    internal class ColorTableEntry 
    {
        //----------------------------------------------------- 
        // 
        //  Constructors
        // 
        //------------------------------------------------------

        #region Constructors
 
        internal ColorTableEntry()
        { 
            _color = Color.FromArgb(0xff, 0, 0, 0); 
            _bAuto = false;
        } 

        #endregion Constructors

        //------------------------------------------------------ 
        //
        //  Internal Properties 
        // 
        //-----------------------------------------------------
 
        #region Internal Properties

        internal Color Color
        { 
            get
            { 
                return _color; 
            }
            set 
            {
                _color = value;
            }
        } 

        internal bool IsAuto 
        { 
            get
            { 
                return _bAuto;
            }
            set
            { 
                _bAuto = value;
            } 
        } 

        internal byte Red 
        {
            set
            {
                _color = Color.FromArgb(0xff, value, _color.G, _color.B); 
            }
        } 
 
        internal byte Green
        { 
            set
            {
                _color = Color.FromArgb(0xff, _color.R, value, _color.B);
            } 
        }
 
        internal byte Blue 
        {
            set 
            {
                _color = Color.FromArgb(0xff, _color.R, _color.G, value);
            }
        } 

        #endregion Internal Properties 
 
        //------------------------------------------------------
        // 
        //  Private Fields
        //
        //-----------------------------------------------------
 
        #region Private Fields
 
        private Color _color; 
        private bool _bAuto;
 
        #endregion Private Fields
    }

    ///  
    /// ColorTableEntry that includes color table.
    ///  
    internal class ColorTable : ArrayList 
    {
        //----------------------------------------------------- 
        //
        //  Constructors
        //
        //----------------------------------------------------- 

        #region Constructors 
 
        internal ColorTable()
            : base(20) 
        {
            _inProgress = false;
        }
 
        #endregion Constructors
 
        //------------------------------------------------------ 
        //
        //  Internal Methods 
        //
        //-----------------------------------------------------

        #region Internal Methods 

        internal Color ColorAt(int index) 
        { 
            if (index >= 0 && index < Count)
            { 
                return EntryAt(index).Color;
            }
            else
            { 
                return Color.FromArgb(0xff, 0, 0, 0);
            } 
        } 

        internal void FinishColor() 
        {
            if (_inProgress)
            {
                _inProgress = false; 
            }
            else 
            { 
                int i = AddColor(Color.FromArgb(0xff, 0, 0, 0));
 
                // Initial unspecified color value is treated as "auto".
                EntryAt(i).IsAuto = true;
            }
        } 

        internal int AddColor(Color color) 
        { 
            // First return existing one
            for (int i = 0; i < Count; i++) 
            {
                if (ColorAt(i) == color)
                {
                    return i; 
                }
            } 
 
            // OK, need to add one
            ColorTableEntry entry = new ColorTableEntry(); 
            entry.Color = color;
            Add(entry);
            return Count - 1;
        } 

        internal ColorTableEntry EntryAt(int index) 
        { 
            if (index >= 0 && index < Count)
            { 
                return (ColorTableEntry)this[index];
            }
            else
            { 
                return null;
            } 
        } 

        #endregion Internal Methods 

        //------------------------------------------------------
        //
        //  Internal Properties 
        //
        //------------------------------------------------------ 
 
        #region Internal Properties
 
        internal byte NewRed
        {
            set
            { 
                ColorTableEntry entry = GetInProgressEntry();
                if (entry != null) 
                { 
                    entry.Red = value;
                } 
            }
        }

        internal byte NewGreen 
        {
            set 
            { 
                ColorTableEntry entry = GetInProgressEntry();
                if (entry != null) 
                {
                    entry.Green = value;
                }
            } 
        }
 
        internal byte NewBlue 
        {
            set 
            {
                ColorTableEntry entry = GetInProgressEntry();
                if (entry != null)
                { 
                    entry.Blue = value;
                } 
            } 
        }
 
        #endregion Internal Properties

        //-----------------------------------------------------
        // 
        //  Private Methods
        // 
        //------------------------------------------------------ 

        #region Private Methods 

        private ColorTableEntry GetInProgressEntry()
        {
            if (_inProgress) 
            {
                return EntryAt(Count - 1); 
            } 
            else
            { 
                _inProgress = true;

                ColorTableEntry entry = new ColorTableEntry();
 
                Add(entry);
 
                return entry; 
            }
        } 

        #endregion Private Methods

        //----------------------------------------------------- 
        //
        //  Private Fields 
        // 
        //-----------------------------------------------------
 
        #region Private Fields

        private bool _inProgress;
 
        #endregion Private Fields
    } 
 
    /// 
    /// ListLevel 
    /// 
    internal class ListLevel
    {
        //----------------------------------------------------- 
        //
        //  Constructors 
        // 
        //------------------------------------------------------
 
        #region Constructors

        internal ListLevel()
        { 
            _nStartIndex = 1;
            _numberType = MarkerStyle.MarkerArabic; 
        } 

        #endregion Constructors 

        //-----------------------------------------------------
        //
        //  Internal Properties 
        //
        //------------------------------------------------------ 
 
        #region Internal Properties
 
        internal long StartIndex
        {
            get
            { 
                return _nStartIndex;
            } 
            set 
            {
                _nStartIndex = value; 
            }
        }

        internal MarkerStyle Marker 
        {
            get 
            { 
                return _numberType;
            } 
            set
            {
                _numberType = value;
            } 
        }
 
        internal FormatState FormatState 
        {
            set 
            {
                _formatState = value;
            }
        } 

        #endregion Internal Properties 
 
        //------------------------------------------------------
        // 
        //  Private Fields
        //
        //-----------------------------------------------------
 
        #region Private Fields
 
        private long _nStartIndex; 
        private MarkerStyle _numberType;
        private FormatState _formatState; 

        #endregion Private Fields
    }
 
    /// 
    /// ListLevelTable 
    ///  
    internal class ListLevelTable : ArrayList
    { 
        //------------------------------------------------------
        //
        //  Constructors
        // 
        //-----------------------------------------------------
 
        #region Constructors 

        internal ListLevelTable() 
            : base(1)
        {
        }
 
        #endregion Constructors
 
        //----------------------------------------------------- 
        //
        //  Internal Methods 
        //
        //-----------------------------------------------------

        #region Internal Methods 

        internal ListLevel EntryAt(int index) 
        { 
            // Note - we silently handle out of range index values here since the lookup
            // might have been based on the structure of the file or the content of some 
            // keyword parameter.
            if (index > Count)
            {
                index = Count - 1; 
            }
            return (ListLevel)(Count > index && index >= 0 ? this[index] : null); 
        } 

        internal ListLevel AddEntry() 
        {
            ListLevel entry = new ListLevel();

            Add(entry); 

            return entry; 
        } 

        #endregion Internal Methods 

        //------------------------------------------------------
        //
        //  Internal Properties 
        //
        //----------------------------------------------------- 
 
        #region Internal Properties
 
        internal ListLevel CurrentEntry
        {
            get
            { 
                return Count > 0 ? EntryAt(Count - 1) : null;
            } 
        } 

        #endregion Internal Properties 
    }

    /// 
    /// ListTableEntry 
    /// 
    internal class ListTableEntry 
    { 
        //------------------------------------------------------
        // 
        //  Constructors
        //
        //------------------------------------------------------
 
        #region Constructors
 
        internal ListTableEntry() 
        {
            _id = 0; 
            _templateID = 0;

            _levels = new ListLevelTable();
        } 

        #endregion Constructors 
 
        //-----------------------------------------------------
        // 
        //  Internal Properties
        //
        //------------------------------------------------------
 
        #region Internal Properties
 
        internal long ID 
        {
            get 
            {
                return _id;
            }
            set 
            {
                _id = value; 
            } 
        }
 
        internal long TemplateID
        {
            set
            { 
                _templateID = value;
            } 
        } 

        internal bool Simple 
        {
            set
            {
                _simple = value; 
            }
        } 
 
        internal ListLevelTable Levels
        { 
            get
            {
                return _levels;
            } 
        }
 
 
        #endregion Internal Properties
 
        //-----------------------------------------------------
        //
        //  Private Fields
        // 
        //-----------------------------------------------------
 
        #region Private Fields 

        private long _id; 
        private long _templateID;

        private bool _simple;
 
        private ListLevelTable _levels;
 
        #endregion Private Fields 
    }
 
    /// 
    /// ListTable
    /// 
    internal class ListTable : ArrayList 
    {
        //----------------------------------------------------- 
        // 
        //  Constructors
        // 
        //------------------------------------------------------

        #region Constructors
 
        internal ListTable()
            : base(20) 
        { 
        }
 
        #endregion Constructors

        //-----------------------------------------------------
        // 
        //  Internal Methods
        // 
        //------------------------------------------------------ 

        #region Internal Methods 

        internal ListTableEntry EntryAt(int index)
        {
            return (ListTableEntry)this[index]; 
        }
 
        internal ListTableEntry FindEntry(long id) 
        {
            for (int i = 0; i < Count; i++) 
            {
                ListTableEntry entry = EntryAt(i);

                if (entry.ID == id) 
                {
                    return entry; 
                } 
            }
 
            return null;
        }

        internal ListTableEntry AddEntry() 
        {
            ListTableEntry entry = new ListTableEntry(); 
 
            Add(entry);
 
            return entry;
        }

        #endregion Internal Methods 

        //------------------------------------------------------ 
        // 
        //  Internal Properties
        // 
        //-----------------------------------------------------

        #region Internal Properties
 
        internal ListTableEntry CurrentEntry
        { 
            get 
            {
                return Count > 0 ? EntryAt(Count - 1) : null; 
            }
        }

        #endregion Internal Properties 
    }
 
    ///  
    /// ListOverride
    ///  
    internal class ListOverride
    {
        //------------------------------------------------------
        // 
        //  Constructors
        // 
        //----------------------------------------------------- 

        #region Constructors 

        internal ListOverride()
        {
            _id = 0; 
            _index = 0;
            _levels = null; 
            _nStartIndex = -1; 
        }
 
        #endregion Constructors

        //-----------------------------------------------------
        // 
        //  Internal Properties
        // 
        //----------------------------------------------------- 

        #region Internal Properties 

        internal long ID
        {
            get 
            {
                return _id; 
            } 
            set
            { 
                _id = value;
            }
        }
 
        internal long Index
        { 
            get 
            {
                return _index; 
            }
            set
            {
                _index = value; 
            }
        } 
 
        internal ListLevelTable Levels
        { 
            get
            {
                return _levels;
            } 
            set
            { 
                _levels = value; 
            }
        } 

        internal long StartIndex
        {
            get 
            {
                return _nStartIndex; 
            } 
            set
            { 
                _nStartIndex = value;
            }
        }
 
        #endregion Internal Properties
 
        //------------------------------------------------------ 
        //
        //  Private Fields 
        //
        //-----------------------------------------------------

        #region Private Fields 

        private long _id; 
        private long _index; 
        private long _nStartIndex;
        private ListLevelTable _levels; 

        #endregion Private Fields
    }
 
    /// 
    /// ListOverrideTable 
    ///  
    internal class ListOverrideTable : ArrayList
    { 
        //------------------------------------------------------
        //
        //  Constructors
        // 
        //------------------------------------------------------
 
        #region Constructors 

        internal ListOverrideTable() 
            : base(20)
        {
        }
 
        #endregion Constructors
 
        //----------------------------------------------------- 
        //
        //  Internal Methods 
        //
        //------------------------------------------------------

        #region Internal Methods 

        internal ListOverride EntryAt(int index) 
        { 
            return (ListOverride)this[index];
        } 

        internal ListOverride FindEntry(int index)
        {
            for (int i = 0; i < Count; i++) 
            {
                ListOverride entry = EntryAt(i); 
 
                if (entry.Index == index)
                { 
                    return entry;
                }
            }
 
            return null;
        } 
 
        internal ListOverride AddEntry()
        { 
            ListOverride entry = new ListOverride();

            Add(entry);
 
            return entry;
        } 
 
        #endregion Internal Methods
 
        //-----------------------------------------------------
        //
        //  Internal Properties
        // 
        //-----------------------------------------------------
 
        #region Internal Properties 

        internal ListOverride CurrentEntry 
        {
            get
            {
                return Count > 0 ? EntryAt(Count - 1) : null; 
            }
        } 
 
        #endregion Internal Properties
    } 

    /// 
    /// DocumentNode
    ///  
    internal class DocumentNode
    { 
        //----------------------------------------------------- 
        //
        //  Consts 
        //
        //------------------------------------------------------

        #region Consts 

        internal static string[] HtmlNames = new string[] 
        { 
            "",
            "", 
            "span",
            "br",
            "a",
            "p", 
            "ul",
            "li", 
            "table", 
            "tbody",
            "tr", 
            "td"
        };

        internal static int[] HtmlLengths = new int[] 
        {
            0,    // unknown 
            0,    // text 
            4,    // span
            2,    // br 
            1,    // a
            1,    // p
            2,    // ul
            2,    // li 
            5,    // table
            6,    // tbody 
            2,    // tr 
            2     // td
        }; 

        internal static string[] XamlNames = new string[]
        {
            "", 
            "",
            "Span", 
            "LineBreak", 
            "Hyperlink",
            "Paragraph", 
            "InlineUIContainer",
            "BlockUIContainer",
            "Image",
            "List", 
            "ListItem",
            "Table", 
            "TableRowGroup", 
            "TableRow",
            "TableCell", 
            "Section",
            "Figure",
            "Floater",
            "Field", 
            "ListText"
        }; 
 
        #endregion Consts
 
        //-----------------------------------------------------
        //
        //  Constructors
        // 
        //------------------------------------------------------
 
        #region Constructors 

        internal DocumentNode(DocumentNodeType documentNodeType) 
        {
            _type = documentNodeType;
            _bPending = true;
            _childCount = 0; 
            _index = -1;
            _dna = null; 
            _parent = null; 
            _bTerminated = false;
            _bMatched = false; 
            _bHasMarkerContent = false;
            _sCustom = null;
            _nRowSpan = 1;
            _nColSpan = 1; 
            _nVirtualListLevel = -1;
            _csa = null; 
 
            _formatState = new FormatState();
            _contentBuilder = new StringBuilder(); 
        }

        #endregion Constructors
 
        //------------------------------------------------------
        // 
        //  Internal Methods 
        //
        //----------------------------------------------------- 

        #region Internal Methods

        internal void InheritFormatState(FormatState formatState) 
        {
            _formatState = new FormatState(formatState); 
 
            // Reset non-inherited properties
            _formatState.LI = 0; 
            _formatState.RI = 0;
            _formatState.SB = 0;
            _formatState.SA = 0;
            _formatState.FI = 0; 
            _formatState.Marker = MarkerStyle.MarkerNone;
            _formatState.CBPara = -1; 
        } 

        internal string GetTagName() 
        {
            return XamlNames[(int)Type];
        }
 
        internal DocumentNode GetParentOfType(DocumentNodeType parentType)
        { 
            DocumentNode dn = Parent; 

            while (dn != null && dn.Type != parentType) 
            {
                dn = dn.Parent;
            }
 
            return dn;
        } 
 
        internal int GetTableDepth()
        { 
            DocumentNode dn = Parent;
            int nDepth = 0;

            while (dn != null) 
            {
                if (dn.Type == DocumentNodeType.dnTable) 
                { 
                    nDepth++;
                } 

                dn = dn.Parent;
            }
 
            return nDepth;
        } 
 
        internal int GetListDepth()
        { 
            DocumentNode dn = Parent;
            int nDepth = 0;

            while (dn != null) 
            {
                if (dn.Type == DocumentNodeType.dnList) 
                { 
                    nDepth++;
                } 
                else if (dn.Type == DocumentNodeType.dnCell)
                {
                    break;
                } 
                dn = dn.Parent;
            } 
 
            return nDepth;
        } 

        internal void Terminate(ConverterState converterState)
        {
            if (!IsTerminated) 
            {
                string plaintext = StripInvalidChars(Xaml); 
                AppendXamlPrefix(converterState); 
                StringBuilder xamlBuilder = new StringBuilder(Xaml);
                xamlBuilder.Append(plaintext); 
                Xaml = xamlBuilder.ToString();
                AppendXamlPostfix(converterState);
                IsTerminated = true;
            } 
        }
 
        internal void ConstrainFontPropagation(FormatState fsOrig) 
        {
            // We only output certain font properties at the paragraph level.  Ensure the paragraph's formatstate 
            // only records those properties that are actually written there, so that inline nodes properly
            // generate the result.
            FormatState.SetCharDefaults();
            FormatState.Font = fsOrig.Font; 
            FormatState.FontSize = fsOrig.FontSize;
            FormatState.Bold = fsOrig.Bold; 
            FormatState.Italic = fsOrig.Italic; 

            // No, lang can't be written at paragraph level since I have no way of turning it "off", e.g. if 
            // \lang specified for \par but not for inline text.
            // FormatState.LangCur = fsOrig.LangCur;

            // No, font color can't be written at paragraph level since I have no way of turning it "off" once 
            // I've turned it on, so "automatic" color values can't be encoded.  I'll just have to skip it here.
            // FormatState.CF = fsOrig.CF; 
 
            // No, text decorations can't be written at paragraph level since they don't propagate.
            // FormatState.UL = fsOrig.UL; 
            // FormatState.Strike = fsOrig.Strike;
        }

        internal bool RequiresXamlFontProperties() 
        {
            FormatState fsThis = FormatState; 
            FormatState fsParent = ParentFormatStateForFont; 

            return      (fsThis.Strike != fsParent.Strike) 
                    ||  (fsThis.UL != fsParent.UL)
                    ||  (fsThis.Font != fsParent.Font && fsThis.Font >= 0)
                    ||  (fsThis.FontSize != fsParent.FontSize && fsThis.FontSize >= 0)
                    ||  (fsThis.CF != fsParent.CF) 
                    ||  (fsThis.Bold != fsParent.Bold)
                    ||  (fsThis.Italic != fsParent.Italic) 
                    ||  (fsThis.LangCur != fsParent.LangCur); 
        }
 
        internal void AppendXamlFontProperties(ConverterState converterState, StringBuilder sb)
        {
            FormatState fsThis = FormatState;
            FormatState fsParent = ParentFormatStateForFont; 

            bool bStrike = fsThis.Strike != fsParent.Strike; 
            bool bUL = fsThis.UL != fsParent.UL; 
            if (bStrike || bUL)
            { 
                sb.Append(" TextDecorations=\"");
                if (bUL)
                {
                    sb.Append("Underline"); 
                }
                if (bUL && bStrike) 
                { 
                    sb.Append(", ");
                } 
                if (bStrike)
                {
                    sb.Append("Strikethrough");
                } 
                sb.Append("\"");
            } 
 
            if (fsThis.Font != fsParent.Font && fsThis.Font >= 0)
            { 
                FontTableEntry entry = converterState.FontTable.FindEntryByIndex((int)fsThis.Font);

                if (entry != null && entry.Name != null && !(entry.Name.Equals(string.Empty)))
                { 
                    sb.Append(" FontFamily=\"");
 
                    // FontFamily should be limited with LF_FACESIZE(32) characters, 
                    // because GDI doesn't support fonts that have the name with more than
                    // LF_FACESIZE characters. 
                    if (entry.Name.Length > 32)
                    {
                        sb.Append(entry.Name, 0, 32);
                    } 
                    else
                    { 
                        sb.Append(entry.Name); 
                    }
 
                    sb.Append("\"");
                }
            }
 
            if (fsThis.FontSize != fsParent.FontSize && fsThis.FontSize >= 0)
            { 
                sb.Append(" FontSize=\""); 
                double fs = (double)fsThis.FontSize;
                if (fs <= 1f) 
                {
                    fs = 2f;
                }
                sb.Append((fs / 2).ToString(CultureInfo.InvariantCulture)); 
                sb.Append("pt\"");
            } 
 
            if (fsThis.Bold != fsParent.Bold)
            { 
                if (fsThis.Bold)
                {
                    sb.Append(" FontWeight=\"Bold\"");
                } 
                else
                { 
                    sb.Append(" FontWeight=\"Normal\""); 
                }
            } 

            if (fsThis.Italic != fsParent.Italic)
            {
                if (fsThis.Italic) 
                {
                    sb.Append(" FontStyle=\"Italic\""); 
                } 
                else
                { 
                    sb.Append(" FontStyle=\"Normal\"");
                }
            }
 
            if (fsThis.CF != fsParent.CF)
            { 
                ColorTableEntry entry = converterState.ColorTable.EntryAt((int)fsThis.CF); 

                if (entry != null && !entry.IsAuto) 
                {
                    sb.Append(" Foreground=\"");
                    sb.Append(entry.Color.ToString());
                    sb.Append("\""); 
                }
            } 
 
            // NB: 0x400 (1024) is reserved value for "lidNoProof" - not a real language code.
            if (fsThis.LangCur != fsParent.LangCur && fsThis.LangCur > 0 && fsThis.LangCur != 0x400) 
            {
                try
                {
                    CultureInfo ci = new CultureInfo((int)fsThis.LangCur); 
                    sb.Append(" xml:lang=\"");
                    sb.Append(ci.Name); 
                    sb.Append("\""); 
                }
                catch (System.ArgumentException) 
                {
                    // Just omit xml:lang tag if this is not a valid value.
                }
            } 
        }
 
        internal string StripInvalidChars(string text) 
        {
            if (text == null || text.Length == 0) 
            {
                return text;
            }
 
            StringBuilder sb = null;
            int i = 0; 
 
            for (; i < text.Length; i++)
            { 
                int iStart = i;
                for (; i < text.Length; i++)
                {
                    if ((text[i] & 0xF800) == 0xD800)    // if surrogate 
                    {
                        if ((i + 1 == text.Length)             // and no trail char 
                            || ((text[i] & 0xFC00) == 0xDC00)   // or low surrogate occurs before high 
                            || ((text[i + 1] & 0xFC00) != 0xDC00) // or high not followed by low
                            ) 
                        {
                            break;  // then cull this
                        }
                        else 
                        {
                            i++;    // move past first word of surrogate, then second at top of loop` 
                        } 
                    }
                } 

                if (iStart != 0 || i != text.Length)
                {
                    if (sb == null) 
                    {
                        sb = new StringBuilder(); 
                    } 
                    if (i != iStart)
                    { 
                        sb.Append(text, iStart, i - iStart);
                    }
                }
            } 

            if (sb != null) 
            { 
                return sb.ToString();
            } 
            else
            {
                return text;
            } 
        }
 
        internal void AppendXamlEncoded(string text) 
        {
            StringBuilder xamlStringBuilder = new StringBuilder(Xaml); 

            int index = 0;
            while (index < text.Length)
            { 
                int currentIndex = index;
 
                while (currentIndex < text.Length) 
                {
                    if (text[currentIndex] < 32 
                        && text[currentIndex] != '\t')
                    {
                        break;
                    } 
                    if (text[currentIndex] == '&'
                        || text[currentIndex] == '>' 
                        || text[currentIndex] == '<' 
                        || text[currentIndex] == 0)
                    { 
                        break;
                    }

                    currentIndex++; 
                }
                if (currentIndex != index) 
                { 
                    string substring = text.Substring(index, currentIndex - index);
                    xamlStringBuilder.Append(substring); 
                }
                if (currentIndex < text.Length)
                {
                    if (text[currentIndex] < 32 && text[currentIndex] != '\t') 
                    {
                        switch (text[currentIndex]) 
                        { 
                            case '\f':  // formfeed
                                xamlStringBuilder.Append("&#x"); 
                                int ic = (int)text[currentIndex];
                                xamlStringBuilder.Append(ic.ToString("x", CultureInfo.InvariantCulture));
                                xamlStringBuilder.Append(";");
                                break; 

                            default: 
                                // don't care about low ANSI values - not supported by XAML 
                                break;
                        } 
                    }
                    else
                    {
                        switch (text[currentIndex]) 
                        {
                            case '&': xamlStringBuilder.Append("&"); break; 
                            case '<': xamlStringBuilder.Append("<"); break; 
                            case '>': xamlStringBuilder.Append(">"); break;
                            case (char)0: break; 
                        }
                    }
                }
                index = currentIndex + 1; 
            }
            Xaml = xamlStringBuilder.ToString(); 
        } 

        internal void AppendXamlPrefix(ConverterState converterState) 
        {
            DocumentNodeArray dna = converterState.DocumentNodeArray;

            if (IsHidden) 
            {
                return; 
            } 

            if (Type == DocumentNodeType.dnImage) 
            {
                // Append image xaml prefix
                AppendImageXamlPrefix();
                return; 
            }
 
            if (Type == DocumentNodeType.dnText || Type == DocumentNodeType.dnInline) 
            {
                AppendInlineXamlPrefix(converterState); 
                return;
            }

            StringBuilder xamlStringBuilder = new StringBuilder(); 

            // Do I need to wrap a font around this? 
            if (IsEmptyNode && RequiresXamlFontProperties()) 
            {
                xamlStringBuilder.Append("<"); 
                xamlStringBuilder.Append(XamlNames[(int)DocumentNodeType.dnInline]);
                AppendXamlFontProperties(converterState, xamlStringBuilder);
                xamlStringBuilder.Append(">");
            } 

            xamlStringBuilder.Append("<"); 
            xamlStringBuilder.Append(GetTagName()); 

            switch (Type) 
            {
                case DocumentNodeType.dnTable:
                    // See below for writing out table column information
                    AppendXamlPrefixTableProperties(xamlStringBuilder); 
                    break;
 
                case DocumentNodeType.dnCell: 
                    // Row stores cell properties.
                    AppendXamlPrefixCellProperties(xamlStringBuilder, dna, converterState); 
                    break;

                case DocumentNodeType.dnParagraph:
                    AppendXamlPrefixParagraphProperties(xamlStringBuilder, converterState); 
                    break;
 
                case DocumentNodeType.dnListItem: 
                    // List margins are handled at the paragraph level
                    AppendXamlPrefixListItemProperties(xamlStringBuilder); 
                    break;

                case DocumentNodeType.dnList:
                    // List margins are handled at the listitem level 
                    AppendXamlPrefixListProperties(xamlStringBuilder);
                    break; 
 
                case DocumentNodeType.dnHyperlink:
                    AppendXamlPrefixHyperlinkProperties(xamlStringBuilder); 
                    break;
            }

            if (IsEmptyNode) 
            {
                xamlStringBuilder.Append(" /"); 
            } 

            xamlStringBuilder.Append(">"); 

            // Do I need to wrap a font around this?
            if (IsEmptyNode && RequiresXamlFontProperties())
            { 
                xamlStringBuilder.Append(""); 
            }
 
            // Anything after the start tag?
            switch (Type)
            {
                case DocumentNodeType.dnTable: 
                    AppendXamlTableColumnsAfterStartTag(xamlStringBuilder);
                    break; 
            } 

            Xaml = xamlStringBuilder.ToString(); 
        }

        private void AppendXamlPrefixTableProperties(StringBuilder xamlStringBuilder)
        { 
            // See below for writing out table column information
            if (FormatState.HasRowFormat) 
            { 
                if (FormatState.RowFormat.Dir == DirState.DirRTL)
                { 
                    xamlStringBuilder.Append(" FlowDirection=\"RightToLeft\"");
                }

                RowFormat rf = FormatState.RowFormat; 
                CellFormat cf = rf.RowCellFormat;
                xamlStringBuilder.Append(" CellSpacing=\""); 
                xamlStringBuilder.Append(Converters.TwipToPositiveVisiblePxString(cf.SpacingLeft)); 
                xamlStringBuilder.Append("\"");
                xamlStringBuilder.Append(" Margin=\""); 
                xamlStringBuilder.Append(Converters.TwipToPositivePxString(rf.Trleft));
                xamlStringBuilder.Append(",0,0,0\"");
            }
            else 
            {
                xamlStringBuilder.Append(" CellSpacing=\"0\" Margin=\"0,0,0,0\""); 
            } 
        }
 
        private void AppendXamlPrefixCellProperties(StringBuilder xamlStringBuilder, DocumentNodeArray dna, ConverterState converterState)
        {
            Color cToUse = Color.FromArgb(0xff, 0, 0, 0);
 
            // Row stores cell properties.
            DocumentNode dnRow = GetParentOfType(DocumentNodeType.dnRow); 
            Debug.Assert(dnRow != null);                        // Need row 
            Debug.Assert(dnRow != null && !dnRow.IsPending);   // Row props attached when row is closed
            Debug.Assert(dnRow != null && dnRow.FormatState.RowFormat != null); 

            if (dnRow != null && dnRow.FormatState.HasRowFormat)
            {
                int nCol = GetCellColumn(); 
                CellFormat cf = dnRow.FormatState.RowFormat.NthCellFormat(nCol);
                if (Converters.ColorToUse(converterState, cf.CB, cf.CF, cf.Shading, ref cToUse)) 
                { 
                    xamlStringBuilder.Append(" Background=\"");
                    xamlStringBuilder.Append(cToUse.ToString(CultureInfo.InvariantCulture)); 
                    xamlStringBuilder.Append("\"");
                }

                if (cf.HasBorder) 
                {
                    xamlStringBuilder.Append(cf.GetBorderAttributeString(converterState)); 
                } 
                xamlStringBuilder.Append(cf.GetPaddingAttributeString());
            } 
            else
                xamlStringBuilder.Append(" BorderBrush=\"#FF000000\" BorderThickness=\"1,1,1,1\"");

            if (ColSpan > 1) 
            {
                xamlStringBuilder.Append(" ColumnSpan=\""); 
                xamlStringBuilder.Append(ColSpan.ToString(CultureInfo.InvariantCulture)); 
                xamlStringBuilder.Append("\"");
            } 
            if (RowSpan > 1)
            {
                xamlStringBuilder.Append(" RowSpan=\"");
                xamlStringBuilder.Append(RowSpan.ToString(CultureInfo.InvariantCulture)); 
                xamlStringBuilder.Append("\"");
            } 
        } 

        private void AppendXamlDir(StringBuilder xamlStringBuilder) 
        {
            if (RequiresXamlDir)
            {
                if (XamlDir == DirState.DirLTR) 
                {
                    xamlStringBuilder.Append(" FlowDirection=\"LeftToRight\""); 
                } 
                else
                { 
                    xamlStringBuilder.Append(" FlowDirection=\"RightToLeft\"");
                }
            }
        } 

        private void AppendXamlPrefixParagraphProperties(StringBuilder xamlStringBuilder, ConverterState converterState) 
        { 
            Color cToUse = Color.FromArgb(0xff, 0, 0, 0);
            FormatState fsThis = FormatState; 

            if (Converters.ColorToUse(converterState, fsThis.CBPara, fsThis.CFPara, fsThis.ParaShading, ref cToUse))
            {
                xamlStringBuilder.Append(" Background=\""); 
                xamlStringBuilder.Append(cToUse.ToString(CultureInfo.InvariantCulture));
                xamlStringBuilder.Append("\""); 
            } 

            // Handle paragraph direction 
            AppendXamlDir(xamlStringBuilder);

            // Handle paragraph margins
            xamlStringBuilder.Append(" Margin=\""); 
            xamlStringBuilder.Append(Converters.TwipToPositivePxString(NearMargin));
            xamlStringBuilder.Append(","); 
            xamlStringBuilder.Append(Converters.TwipToPositivePxString(fsThis.SB)); 
            xamlStringBuilder.Append(",");
            xamlStringBuilder.Append(Converters.TwipToPositivePxString(FarMargin)); 
            xamlStringBuilder.Append(",");
            xamlStringBuilder.Append(Converters.TwipToPositivePxString(fsThis.SA));
            xamlStringBuilder.Append("\"");
 
            // FontFamily, Size, Bold, Italic
            AppendXamlFontProperties(converterState, xamlStringBuilder); 
 
            // Lineheight
            // NB: Avalon only supports "lineheight exact" - we're just not going to output it. 
            //if (fsThis.SL != 0)
            //{
            //    double px = (float)fsThis.SL;
            //    if (px < 0) px = -px; 

            // Whether SLMult is on or not is really moot.  The value is always defined in twips, 
            // the UI is the only thing that then interprets this as "multiple", probably when the 
            // paragraph font is reset.
 
            //    xamlStringBuilder.Append(" LineHeight=\"");
            //    xamlStringBuilder.Append(Converters.TwipToPxString(px));
            //    xamlStringBuilder.Append("\"");
            //} 

            // Indent 
            if (fsThis.FI != 0) 
            {
                xamlStringBuilder.Append(" TextIndent=\""); 
                xamlStringBuilder.Append(Converters.TwipToPxString(fsThis.FI));
                xamlStringBuilder.Append("\"");
            }
 
            // Handle paragraph alignment
            if (fsThis.HAlign != HAlign.AlignDefault) 
            { 
                xamlStringBuilder.Append(" TextAlignment=\"");
                xamlStringBuilder.Append(Converters.AlignmentToString(fsThis.HAlign, fsThis.DirPara)); 
                xamlStringBuilder.Append("\"");
            }

            // Handle paragraph borders 
            if (fsThis.HasParaBorder)
            { 
                xamlStringBuilder.Append(fsThis.GetBorderAttributeString(converterState)); 
            }
        } 

        private void AppendXamlPrefixListItemProperties(StringBuilder xamlStringBuilder)
        {
            // List margins are handled here normally. 
            // NB: Avalon doesn't render list markers if margin is zero.  Enforce a minimum indent in order
            // to ensure the marker is visible. 
            long lMargin = NearMargin; 
            if (lMargin < 360 && this.GetListDepth() == 1)
            { 
                DocumentNode dnList = Parent;

                if (dnList != null && dnList.FormatState.Marker != MarkerStyle.MarkerHidden)
                { 
                    lMargin = 360;
                } 
            } 
            xamlStringBuilder.Append(" Margin=\"");
            xamlStringBuilder.Append(Converters.TwipToPositivePxString(lMargin)); 
            xamlStringBuilder.Append(",0,0,0\"");

            // Handle direction
            AppendXamlDir(xamlStringBuilder); 
        }
 
        private void AppendXamlPrefixListProperties(StringBuilder xamlStringBuilder) 
        {
            // List margins are handled at the listitem level 
            xamlStringBuilder.Append(" Margin=\"0,0,0,0\"");
            xamlStringBuilder.Append(" Padding=\"0,0,0,0\"");

            // Marker style 
            xamlStringBuilder.Append(" MarkerStyle=\"");
            xamlStringBuilder.Append(Converters.MarkerStyleToString(FormatState.Marker)); 
            xamlStringBuilder.Append("\""); 

            // Note that we don't allow a value of zero here, since XAML doesn't support it. 
            if (FormatState.StartIndex > 0 && FormatState.StartIndex != 1)
            {
                xamlStringBuilder.Append(" StartIndex=\"");
                xamlStringBuilder.Append(FormatState.StartIndex.ToString(CultureInfo.InvariantCulture)); 
                xamlStringBuilder.Append("\"");
            } 
 
            // Handle direction
            AppendXamlDir(xamlStringBuilder); 
        }

        private void AppendXamlPrefixHyperlinkProperties(StringBuilder xamlStringBuilder)
        { 
            if (NavigateUri != null && NavigateUri.Length > 0)
            { 
                xamlStringBuilder.Append(" NavigateUri=\""); 
                xamlStringBuilder.Append(Converters.StringToXMLAttribute(NavigateUri));
                xamlStringBuilder.Append("\""); 
            }
        }

        private void AppendXamlTableColumnsAfterStartTag(StringBuilder xamlStringBuilder) 
        {
            if (ColumnStateArray != null && ColumnStateArray.Count > 0) 
            { 
                xamlStringBuilder.Append("");
                long prevX = 0; 
                if (FormatState.HasRowFormat)
                {
                    prevX = FormatState.RowFormat.Trleft;
                } 
                for (int i = 0; i < ColumnStateArray.Count; i++)
                { 
                    ColumnState cs = ColumnStateArray.EntryAt(i); 

                    long width = cs.CellX - prevX; 

                    if (width <= 0)
                    {
                        width = 1; 
                    }
                    prevX = cs.CellX; 
 
                    xamlStringBuilder.Append("");
                }
                xamlStringBuilder.Append("");
            } 
        }
 
        internal void AppendXamlPostfix(ConverterState converterState) 
        {
            if (IsHidden) 
            {
                return;
            }
 
            // Empty tag terminated above
            if (IsEmptyNode) 
            { 
                return;
            } 

            if (Type == DocumentNodeType.dnImage)
            {
                // Append image xaml postfix 
                AppendImageXamlPostfix();
                return; 
            } 

            if (Type == DocumentNodeType.dnText || Type == DocumentNodeType.dnInline) 
            {
                AppendInlineXamlPostfix(converterState);
                return;
            } 

            StringBuilder xamlStringBuilder = new StringBuilder(Xaml); 
 
            xamlStringBuilder.Append("");

            if (IsBlock)
            { 
                xamlStringBuilder.Append("\r\n");
            } 
 
            Xaml = xamlStringBuilder.ToString();
        } 

        internal void AppendInlineXamlPrefix(ConverterState converterState)
        {
            StringBuilder xamlStringBuilder = new StringBuilder(); 

            FormatState fsThis = this.FormatState; 
            FormatState fsParent = ParentFormatStateForFont; 

            // Wrap any text with formatting tags. 
            xamlStringBuilder.Append(" 0) 
            //    {
            //        xamlStringBuilder.Append(" FontStretch=\"Expanded\""); 
            //    } 
            //    else
            //    { 
            //        xamlStringBuilder.Append(" FontStretch=\"Condensed\"");
            //    }
            //}
 
            if (fsThis.Super != fsParent.Super)
            { 
                xamlStringBuilder.Append(" Typography.Variants=\"Superscript\""); 
            }
 
            if (fsThis.Sub != fsParent.Sub)
            {
                xamlStringBuilder.Append(" Typography.Variants=\"Subscript\"");
            } 

            xamlStringBuilder.Append(">"); 
 
            Xaml = xamlStringBuilder.ToString();
        } 

        internal void AppendInlineXamlPostfix(ConverterState converterState)
        {
            StringBuilder xamlStringBuilder = new StringBuilder(Xaml); 

            xamlStringBuilder.Append(""); 
 
            Xaml = xamlStringBuilder.ToString();
        } 

        internal void AppendImageXamlPrefix()
        {
            StringBuilder xamlStringBuilder = new StringBuilder(); 
            xamlStringBuilder.Append("");
            Xaml = xamlStringBuilder.ToString(); 
        } 

        internal void AppendImageXamlPostfix() 
        {
            StringBuilder xamlStringBuilder = new StringBuilder(Xaml);
            xamlStringBuilder.Append("");
            Xaml = xamlStringBuilder.ToString(); 
        }
 
        internal bool IsAncestorOf(DocumentNode documentNode) 
        {
            int parentIndex = Index; 
            int parentLastChild = Index + ChildCount;

            return documentNode.Index > parentIndex && documentNode.Index <= parentLastChild;
        } 

        internal bool IsLastParagraphInCell() 
        { 
            DocumentNodeArray dna = DNA;
 
            if (Type != DocumentNodeType.dnParagraph)
                return false;

            DocumentNode dnCell = GetParentOfType(DocumentNodeType.dnCell); 
            if (dnCell == null)
            { 
                return false; 
            }
 
            int nFirst = dnCell.Index + 1;
            int nLast = dnCell.Index + dnCell.ChildCount;

            for (; nFirst <= nLast; nLast--) 
            {
                DocumentNode dn = dna.EntryAt(nLast); 
 
                if (dn == this)
                { 
                    return true;
                }
                if (dn.IsBlock)
                { 
                    return false;
                } 
            } 

            return false; 
        }

        internal DocumentNodeArray GetTableRows()
        { 
            DocumentNodeArray dna = DNA;
            DocumentNodeArray retArray = new DocumentNodeArray(); 
 
            if (Type == DocumentNodeType.dnTable)
            { 
                int nStart = this.Index + 1;
                int nLast = this.Index + this.ChildCount;

                for (; nStart <= nLast; nStart++) 
                {
                    DocumentNode dnRow = dna.EntryAt(nStart); 
 
                    if (dnRow.Type == DocumentNodeType.dnRow && this == dnRow.GetParentOfType(DocumentNodeType.dnTable))
                    { 
                        retArray.Push(dnRow);
                    }
                }
            } 

            return retArray; 
        } 

        internal DocumentNodeArray GetRowsCells() 
        {
            DocumentNodeArray dna = DNA;
            DocumentNodeArray retArray = new DocumentNodeArray();
 
            if (Type == DocumentNodeType.dnRow)
            { 
                int nStart = this.Index + 1; 
                int nLast = this.Index + this.ChildCount;
 
                for (; nStart <= nLast; nStart++)
                {
                    DocumentNode dnCell = dna.EntryAt(nStart);
 
                    if (dnCell.Type == DocumentNodeType.dnCell && this == dnCell.GetParentOfType(DocumentNodeType.dnRow))
                    { 
                        retArray.Push(dnCell); 
                    }
                } 
            }

            return retArray;
        } 

        internal int GetCellColumn() 
        { 
            DocumentNodeArray dna = DNA;
            int nCol = 0; 

            if (Type == DocumentNodeType.dnCell)
            {
                DocumentNode dnRow = this.GetParentOfType(DocumentNodeType.dnRow); 

                if (dnRow != null) 
                { 
                    int nStart = dnRow.Index + 1;
                    int nLast = dnRow.Index + dnRow.ChildCount; 

                    for (; nStart <= nLast; nStart++)
                    {
                        DocumentNode dnCell = dna.EntryAt(nStart); 

                        if (dnCell == this) 
                        { 
                            break;
                        } 

                        if (dnCell.Type == DocumentNodeType.dnCell && dnCell.GetParentOfType(DocumentNodeType.dnRow) == dnRow)
                        {
                            nCol++; 
                        }
                    } 
                } 
            }
 
            return nCol;
        }

        internal ColumnStateArray ComputeColumns() 
        {
            DocumentNodeArray dna = DNA; 
            Debug.Assert(Type == DocumentNodeType.dnTable); 

            DocumentNodeArray dnaRows = GetTableRows(); 
            ColumnStateArray cols = new ColumnStateArray();

            for (int i = 0; i < dnaRows.Count; i++)
            { 
                DocumentNode dnRow = dnaRows.EntryAt(i);
                RowFormat rf = dnRow.FormatState.RowFormat; 
 
                long prevCellX = 0;
                for (int j = 0; j < rf.CellCount; j++) 
                {
                    CellFormat cf = rf.NthCellFormat(j);
                    bool bHandled = false;
                    long prevColX = 0; 

                    // Ignore merged cells 
                    if (cf.IsHMerge) 
                    {
                        continue; 
                    }

                    for (int k = 0; k < cols.Count; k++)
                    { 
                        ColumnState cs = (ColumnState)cols[k];
 
                        if (cs.CellX == cf.CellX) 
                        {
                            if (!cs.IsFilled && prevColX == prevCellX) 
                            {
                                cs.IsFilled = true;
                            }
                            bHandled = true; 
                            break;
                        } 
                        else if (cs.CellX > cf.CellX) 
                        {
                            // Hmmm, need to insert a new cell here 
                            ColumnState csNew = new ColumnState();
                            csNew.Row = dnRow;
                            csNew.CellX = cf.CellX;
                            csNew.IsFilled = (prevColX == prevCellX); 
                            cols.Insert(k, csNew);
                            bHandled = true; 
                            break; 
                        }
 
                        prevColX = cs.CellX;
                    }

                    // New cell at the end 
                    if (!bHandled)
                    { 
                        ColumnState csNew = new ColumnState(); 
                        csNew.Row = dnRow;
                        csNew.CellX = cf.CellX; 
                        csNew.IsFilled = (prevColX == prevCellX);
                        cols.Add(csNew);
                    }
 
                    prevCellX = cf.CellX;
                } 
            } 

            return cols; 
        }

        #endregion Internal Methods
 
        //------------------------------------------------------
        // 
        //  Private Methods 
        //
        //----------------------------------------------------- 

        #region Private Methods

        #endregion Private Methods 

        //----------------------------------------------------- 
        // 
        //  Internal Properties
        // 
        //-----------------------------------------------------

        #region Internal Properties
 
        internal bool IsInline
        { 
            get 
            {
                return _type == DocumentNodeType.dnText 
                    || _type == DocumentNodeType.dnInline
                    || _type == DocumentNodeType.dnImage
                    || _type == DocumentNodeType.dnLineBreak
                    || _type == DocumentNodeType.dnListText 
                    || _type == DocumentNodeType.dnHyperlink;
            } 
        } 

        internal bool IsBlock 
        {
            get
            {
                return _type == DocumentNodeType.dnParagraph 
                    || _type == DocumentNodeType.dnList
                    || _type == DocumentNodeType.dnListItem 
                    || _type == DocumentNodeType.dnTable 
                    || _type == DocumentNodeType.dnTableBody
                    || _type == DocumentNodeType.dnRow 
                    || _type == DocumentNodeType.dnCell
                    || _type == DocumentNodeType.dnSection
                    || _type == DocumentNodeType.dnFigure
                    || _type == DocumentNodeType.dnFloater; 
            }
        } 
 
        internal bool IsEmptyNode
        { 
            get
            {
                return _type == DocumentNodeType.dnLineBreak;
            } 
        }
 
        internal bool IsHidden 
        {
            get 
            {
                return _type == DocumentNodeType.dnFieldBegin
                    || _type == DocumentNodeType.dnFieldEnd
                    || _type == DocumentNodeType.dnShape 
                    || _type == DocumentNodeType.dnListText;
            } 
        } 

        internal bool IsWhiteSpace 
        {
            get
            {
                // Can't compute this on a terminated node, since non-text-data has been appended for properties. 
                if (IsTerminated)
                { 
                    return false; 
                }
 
                if (_type == DocumentNodeType.dnText)
                {
                    string textdata = Xaml.Trim();
                    return textdata.Length == 0; 
                }
                return false; 
            } 
        }
 
        internal bool IsPending
        {
            get
            { 
                // Can't be pending if no longer in main document array
                return Index >= 0 && _bPending; 
            } 
            set
            { 
                _bPending = value;
            }
        }
 
        internal bool IsTerminated
        { 
            get 
            {
                return _bTerminated; 
            }
            set
            {
                _bTerminated = value; 
            }
        } 
 
        internal bool IsMatched
        { 
            get
            {
                // This is only relevant for types that need matching.
                if (Type == DocumentNodeType.dnFieldBegin) 
                {
                    return _bMatched; 
                } 

                // Otherwise, always true. 
                return true;
            }
            set
            { 
                _bMatched = value;
            } 
        } 

        internal bool IsTrackedAsOpen 
        {
            get
            {
                if (Index < 0) 
                {
                    return false; 
                } 
                if (Type == DocumentNodeType.dnFieldEnd)
                { 
                    return false;
                }
                if (IsPending && !IsTerminated)
                { 
                    return true;
                } 
                if (!IsMatched) 
                {
                    return true; 
                }
                return false;
            }
        } 

        internal bool HasMarkerContent 
        { 
            get
            { 
                return _bHasMarkerContent;
            }
            set
            { 
                _bHasMarkerContent = value;
            } 
        } 

        internal bool IsNonEmpty 
        {
            get
            {
                return ChildCount > 0 || Xaml != null; 
            }
        } 
 
        internal string ListLabel
        { 
            get
            {
                return _sCustom;
            } 
            set
            { 
                _sCustom = value; 
            }
        } 

        internal long VirtualListLevel
        {
            get 
            {
                return _nVirtualListLevel; 
            } 
            set
            { 
                _nVirtualListLevel = value;
            }
        }
 
        internal string NavigateUri
        { 
            get 
            {
                return _sCustom; 
            }
            set
            {
                _sCustom = value; 
            }
        } 
 
        internal DocumentNodeType Type
        { 
            get
            {
                return _type;
            } 
        }
 
        internal FormatState FormatState 
        {
            get 
            {
                return _formatState;
            }
            set 
            {
                _formatState = value; 
            } 
        }
 
        internal FormatState ParentFormatStateForFont
        {
            get
            { 
                DocumentNode dnPa = Parent;
 
                // Hyperlink doesn't record relevant font info 
                if (dnPa != null && dnPa.Type == DocumentNodeType.dnHyperlink)
                { 
                    dnPa = dnPa.Parent;
                }

                if (Type == DocumentNodeType.dnParagraph || dnPa == null) 
                {
                    return FormatState.EmptyFormatState; 
                } 

                return dnPa.FormatState; 
            }
        }

        internal int ChildCount 
        {
            get 
            { 
                return _childCount;
            } 
            set
            {
                Debug.Assert(value >= 0);
                Debug.Assert(!IsPending); 
                if (value >= 0)
                { 
                    _childCount = value; 
                }
            } 
        }

        internal int Index
        { 
            get
            { 
                return _index; 
            }
            set 
            {
                _index = value;
            }
        } 

        internal DocumentNodeArray DNA 
        { 
            get
            { 
                return _dna;
            }
            set
            { 
                _dna = value;
            } 
        } 

        internal int LastChildIndex 
        {
            get
            {
                return Index + ChildCount; 
            }
        } 
 
        internal DocumentNode ClosedParent
        { 
            get
            {
                return _parent;
            } 
        }
 
        internal DocumentNode Parent 
        {
            get 
            {
                if (_parent == null && DNA != null)
                {
                    return DNA.GetOpenParentWhileParsing(this); 
                }
 
                return _parent; 
            }
            set 
            {
                Debug.Assert(value == null || !value.IsPending);
                _parent = value;
            } 
        }
 
        internal string Xaml 
        {
            get 
            {
                return _xaml;
            }
            set 
            {
                _xaml = value; 
            } 
        }
 
        internal StringBuilder Content
        {
            get
            { 
                return _contentBuilder;
            } 
        } 

        internal int RowSpan 
        {
            get
            {
                return _nRowSpan; 
            }
            set 
            { 
                _nRowSpan = value;
            } 
        }

        internal int ColSpan
        { 
            get
            { 
                return _nColSpan; 
            }
            set 
            {
                _nColSpan = value;
            }
        } 

        internal ColumnStateArray ColumnStateArray 
        { 
            get
            { 
                return _csa;
            }
            set
            { 
                _csa = value;
            } 
        } 

        internal DirState XamlDir 
        {
            get
            {
                // Inline's easy 
                if (IsInline)
                { 
                    return FormatState.DirChar; 
                }
 
                // We only have valid direction on table, list and paragraph.
                if (Type == DocumentNodeType.dnTable)
                {
                    if (FormatState.HasRowFormat) 
                    {
                        return FormatState.RowFormat.Dir; 
                    } 

                    return ParentXamlDir; 
                }
                else if (Type == DocumentNodeType.dnList || Type == DocumentNodeType.dnParagraph)
                {
                    return FormatState.DirPara; 
                }
                else 
                { 
                    for (DocumentNode dnPa = Parent; dnPa != null; dnPa = dnPa.Parent)
                    { 
                        switch (dnPa.Type)
                        {
                            case DocumentNodeType.dnList:
                            case DocumentNodeType.dnParagraph: 
                            case DocumentNodeType.dnTable:
                                return dnPa.XamlDir; 
                        } 
                    }
                    return DirState.DirLTR; 
                }
            }
        }
 
        internal DirState ParentXamlDir
        { 
            get 
            {
                return (Parent == null) ? DirState.DirLTR : Parent.XamlDir; 
            }
        }

        internal bool RequiresXamlDir 
        {
            get 
            { 
                return XamlDir != ParentXamlDir;
            } 
        }

        internal long NearMargin
        { 
            get
            { 
                return ParentXamlDir == DirState.DirLTR ? FormatState.LI : FormatState.RI; 
            }
            set 
            {
                if (ParentXamlDir == DirState.DirLTR)
                {
                    FormatState.LI = value; 
                }
                else 
                { 
                    FormatState.RI = value;
                } 
            }
        }

        internal long FarMargin 
        {
            get 
            { 
                return ParentXamlDir == DirState.DirLTR ? FormatState.RI : FormatState.LI;
            } 
        }

        #endregion Internal Properties
 
        //------------------------------------------------------
        // 
        //  Internal Fields 
        //
        //----------------------------------------------------- 

        #region Internal Fields

        private bool _bPending; 
        private bool _bTerminated;
        private DocumentNodeType _type; 
        private FormatState _formatState; 
        private string _xaml;
        private StringBuilder _contentBuilder; 

        // Used for "tree" semantics
        private int _childCount;
        private int _index; 
        private DocumentNode _parent;
        private DocumentNodeArray _dna; 
 
        // Custom fields for specific node types
        // Tables 
        private ColumnStateArray _csa;

        // Cells
        private int _nRowSpan; 
        private int _nColSpan;
 
        // Lists 
        private string _sCustom;    // Also used for Hyperlink
        private long _nVirtualListLevel; 

        // ListText
        private bool _bHasMarkerContent;
 
        // Fields
        private bool _bMatched; 
 
        #endregion Internal Fields
    } 


    internal class ColumnState
    { 
        internal ColumnState()
        { 
            _nCellX = 0; 
            _row = null;
            _fFilled = false; 
        }

        internal long CellX
        { 
            get
            { 
                return _nCellX; 
            }
            set 
            {
                _nCellX = value;
            }
        } 

        internal DocumentNode Row 
        { 
            get
            { 
                return _row;
            }
            set
            { 
                _row = value;
            } 
        } 

        internal bool IsFilled 
        {
            get
            {
                return _fFilled; 
            }
            set 
            { 
                _fFilled = value;
            } 
        }

        private long _nCellX;
        private DocumentNode _row; 
        private bool _fFilled;
    } 
 
    internal class ColumnStateArray : ArrayList
    { 
        internal ColumnStateArray()
            : base(20)
        {
        } 

        internal ColumnState EntryAt(int i) 
        { 
            return (ColumnState)this[i];
        } 

        internal int GetMinUnfilledRowIndex()
        {
            int nUnfilledRowIndex = -1; 
            for (int i = 0; i < Count; i++)
            { 
                ColumnState cs = EntryAt(i); 

                if (!cs.IsFilled && (nUnfilledRowIndex < 0 || nUnfilledRowIndex > cs.Row.Index)) 
                {
                    // Don't split at row that is traversed by a row-spanning cell.
                    if (!cs.Row.FormatState.RowFormat.IsVMerge)
                    { 
                        nUnfilledRowIndex = cs.Row.Index;
                    } 
                } 
            }
 
            Debug.Assert(nUnfilledRowIndex != 0);
            return nUnfilledRowIndex;
        }
    } 

    ///  
    /// class DocumentNodeArray: 
    ///     This array represents a depth-first walk through the tree of nodes.  Each node records its current
    ///     index in the array (for ease of mapping back to the array) as well as the number of descendants 
    ///     (confusingly called ChildCount).  A Parent pointer is also maintained, but this is essentially a
    ///     cache - the real structure is specified by the implicit ordering and the ChildCount value.
    ///     While the array is being constructed, nodes may be marked as "Pending".  The ChildCount of pending
    ///     nodes is not accurate.  ChildCount only becomes valid when a node is "Closed". 
    /// 
    internal class DocumentNodeArray : ArrayList 
    { 
        //------------------------------------------------------
        // 
        //  Constructors
        //
        //------------------------------------------------------
 
        #region Constructors
 
        internal DocumentNodeArray() 
            : base(100)
        { 
            _fMain = false;
            _dnaOpen = null;
        }
 
        #endregion Constructors
 
        //----------------------------------------------------- 
        //
        //  Internal Methods 
        //
        //------------------------------------------------------

        #region Internal Methods 

        internal DocumentNode EntryAt(int nAt) 
        { 
            return (DocumentNode)this[nAt];
        } 

        internal void Push(DocumentNode documentNode)
        {
            InsertNode(Count, documentNode); 
        }
 
        internal DocumentNode Pop() 
        {
            DocumentNode documentNode = Top; 

            if (Count > 0)
            {
                Excise(Count - 1, 1); 
            }
 
            return documentNode; 
        }
 
        internal DocumentNode TopPending()
        {
            for (int i = Count - 1; i >= 0; i--)
            { 
                DocumentNode dn = EntryAt(i);
 
                if (dn.IsPending) 
                {
                    return dn; 
                }
            }

            return null; 
        }
 
        internal bool TestTop(DocumentNodeType documentNodeType) 
        {
            return ((Count > 0) && (EntryAt(Count - 1).Type == documentNodeType)); 
        }

        internal void PreCoalesceChildren(ConverterState converterState, int nStart, bool bChild)
        { 
            // We process tables twice to handle first colspan, then rowspan
            DocumentNodeArray dnaTables = new DocumentNodeArray(); 
            bool fVMerged = false; 

            // Try to move paragraph margin to containing list items 
            DocumentNode dnCoalesce = EntryAt(nStart);
            int nChild = dnCoalesce.ChildCount;
            Debug.Assert(nStart + nChild < Count);
            if (nStart + nChild >= Count) 
            {
                nChild = Count - nStart - 1; 
            } 

            int nEnd = nStart + nChild; 

            // If bChild specified, we don't process parent
            if (bChild)
            { 
                nStart++;
            } 
 
            // This is vaguely N^2 in the sense that for each list item, I process all containing paragraphs,
            // including ones contained in other list items.  But it's only a problem for very deep, very long 
            // lists, so we can live with it.
            for (int nAt = nStart; nAt <= nEnd; nAt++)
            {
                DocumentNode dn = EntryAt(nAt); 

                // Inline direction merging 
                if (dn.IsInline && dn.RequiresXamlDir && dn.ClosedParent != null) 
                {
                    int nnAt = nAt + 1; 
                    for (; nnAt <= nEnd; nnAt++)
                    {
                        DocumentNode dnn = EntryAt(nnAt);
 
                        if (!dnn.IsInline
                            || dnn.Type == DocumentNodeType.dnHyperlink 
                            || dnn.FormatState.DirChar != dn.FormatState.DirChar 
                            || dnn.ClosedParent != dn.ClosedParent)
                        { 
                            break;
                        }
                    }
 
                    int nChildHere = nnAt - nAt;
                    if (nChildHere > 1) 
                    { 

                        DocumentNode dnNewDir = new DocumentNode(DocumentNodeType.dnInline); 
                        dnNewDir.FormatState = new FormatState(dn.Parent.FormatState);
                        dnNewDir.FormatState.DirChar = dn.FormatState.DirChar;

                        InsertChildAt(dn.ClosedParent, dnNewDir, nAt, nChildHere); 

                        // Adjust the loop end to account for the newly inserted element 
                        nEnd += 1; 
                    }
                } 

                else if (dn.Type == DocumentNodeType.dnListItem)
                {
                    PreCoalesceListItem(dn); 
                }
 
                else if (dn.Type == DocumentNodeType.dnList) 
                {
                    PreCoalesceList(dn); 
                }

                else if (dn.Type == DocumentNodeType.dnTable)
                { 
                    dnaTables.Add(dn);
                    nEnd += PreCoalesceTable(dn); 
                } 

                // Compute colspan 
                else if (dn.Type == DocumentNodeType.dnRow)
                {
                    PreCoalesceRow(dn, ref fVMerged);
                } 
            }
 
            // Process tables to examine rowspan 
            if (fVMerged)
            { 
                ProcessTableRowSpan(dnaTables);
            }
        }
 
        internal void CoalesceChildren(ConverterState converterState, int nStart)
        { 
            Debug.Assert(Count == 0 || (nStart >= 0 && nStart < Count)); 
            if (nStart >= Count || nStart < 0)
            { 
                return;
            }

            // Do some fixups to match semantics for more complicated constructs 
            PreCoalesceChildren(converterState, nStart, false);
 
            DocumentNode dnCoalesce = EntryAt(nStart); 
            int nChild = dnCoalesce.ChildCount;
            Debug.Assert(nStart + nChild < Count); 
            if (nStart + nChild >= Count)
            {
                nChild = Count - nStart - 1;
            } 

            int nEnd = nStart + nChild; 
 
            for (int nAt = nEnd; nAt >= nStart; nAt--)
            { 
                DocumentNode dn = EntryAt(nAt);

                if (dn.ChildCount == 0)
                { 
                    dn.Terminate(converterState);
                } 
                else 
                {
                    Debug.Assert(nAt + dn.ChildCount <= nEnd); 
                    Debug.Assert(!dn.IsTerminated);

                    dn.AppendXamlPrefix(converterState);
                    StringBuilder xamlBuilder = new StringBuilder(dn.Xaml); 
                    int nChildrenHere = dn.ChildCount;
                    int nEndHere = nAt + nChildrenHere; 
                    for (int i = nAt + 1; i <= nEndHere; i++) 
                    {
                        DocumentNode dnChild = EntryAt(i); 
                        Debug.Assert(dnChild.ChildCount == 0 && dnChild.IsTerminated);
                        xamlBuilder.Append(dnChild.Xaml);
                    }
                    dn.Xaml = xamlBuilder.ToString(); 
                    dn.AppendXamlPostfix(converterState);
                    dn.IsTerminated = true; 
                    Excise(nAt + 1, nChildrenHere); 
                    nEnd -= nChildrenHere;
 
                    AssertTreeInvariants();
                }

                // Zero out spanned columns 
                if (dn.ColSpan == 0)
                { 
                    dn.Xaml = string.Empty; 
                }
            } 
        }

        internal void CoalesceOnlyChildren(ConverterState converterState, int nStart)
        { 
            Debug.Assert(Count == 0 || (nStart >= 0 && nStart < Count));
            if (nStart >= Count || nStart < 0) 
            { 
                return;
            } 

            // Do some fixups to match semantics for more complicated constructs
            PreCoalesceChildren(converterState, nStart, true);
 
            DocumentNode dnCoalesce = EntryAt(nStart);
            int nChild = dnCoalesce.ChildCount; 
            Debug.Assert(nStart + nChild < Count); 
            if (nStart + nChild >= Count)
            { 
                nChild = Count - nStart - 1;
            }

            int nEnd = nStart + nChild; 

            for (int nAt = nEnd; nAt >= nStart; nAt--) 
            { 
                DocumentNode dn = EntryAt(nAt);
 
                if (dn.ChildCount == 0 && nAt != nStart)
                {
                    dn.Terminate(converterState);
                } 
                else if (dn.ChildCount > 0)
                { 
                    Debug.Assert(nAt + dn.ChildCount <= nEnd); 
                    Debug.Assert(!dn.IsTerminated);
 
                    if (nAt != nStart)
                    {
                        dn.AppendXamlPrefix(converterState);
                    } 
                    StringBuilder xamlBuilder = new StringBuilder(dn.Xaml);
                    int nChildrenHere = dn.ChildCount; 
                    int nEndHere = nAt + nChildrenHere; 
                    for (int i = nAt + 1; i <= nEndHere; i++)
                    { 
                        DocumentNode dnChild = EntryAt(i);
                        Debug.Assert(dnChild.ChildCount == 0 && dnChild.IsTerminated);
                        xamlBuilder.Append(dnChild.Xaml);
                    } 
                    dn.Xaml = xamlBuilder.ToString();
                    if (nAt != nStart) 
                    { 
                        dn.AppendXamlPostfix(converterState);
                        dn.IsTerminated = true; 
                    }
                    Excise(nAt + 1, nChildrenHere);
                    nEnd -= nChildrenHere;
                } 
            }
        } 
 
        internal void CoalesceAll(ConverterState converterState)
        { 
            for (int nAt = 0; nAt < Count; nAt++)
            {
                CoalesceChildren(converterState, nAt);
            } 
        }
 
        internal void CloseAtHelper(int index, int nChildCount) 
        {
            Debug.Assert(Count == 0 || (index >= 0 && index < Count)); 
            Debug.Assert(index + nChildCount < Count);
            if (index >= Count || index < 0 || index + nChildCount >= Count)
            {
                return; 
            }
 
            DocumentNode dnClose = EntryAt(index); 
            if (!dnClose.IsPending)
            { 
                return;
            }

            // Mark this as closed 
            dnClose.IsPending = false;
 
            dnClose.ChildCount = nChildCount; 

            int nAt = index + 1; 
            int nEnd = index + dnClose.ChildCount;
            while (nAt <= nEnd)
            {
                DocumentNode dn = EntryAt(nAt); 
                dn.Parent = dnClose;
                nAt += dn.ChildCount + 1; 
            } 
        }
 
        internal void CloseAt(int index)
        {
            Debug.Assert(Count == 0 || (index >= 0 && index < Count));
            if (index >= Count || index < 0) 
            {
                return; 
            } 

            DocumentNode dnClose = EntryAt(index); 
            if (!dnClose.IsPending)
            {
                return;
            } 

            AssertTreeInvariants(); 
            AssertTreeSemanticInvariants(); 

            // Make sure everything after its start is closed. 
            for (int i = Count - 1; i > index; i--)
            {
                DocumentNode dn = EntryAt(i);
                if (dn.IsPending) 
                {
                    CloseAt(i); 
                } 
            }
 
            // Set up child/parent relationship
            CloseAtHelper(index, Count - index - 1);

            AssertTreeInvariants(); 
            AssertTreeSemanticInvariants();
        } 
 
        internal void AssertTreeInvariants()
        { 
            if (Invariant.Strict)
            {
                for (int nAt = 0; nAt < Count; nAt++)
                { 
                    DocumentNode dn = EntryAt(nAt);
 
                    for (int i = nAt + 1; i <= dn.LastChildIndex; i++) 
                    {
                        Debug.Assert(EntryAt(i).ClosedParent != null); 
                    }

                    Debug.Assert(nAt + dn.ChildCount < Count);
 
                    for (DocumentNode dnPa = dn.Parent; dnPa != null; dnPa = dnPa.Parent)
                    { 
                        Debug.Assert(dnPa.IsPending || (nAt > dnPa.Index && nAt <= dnPa.Index + dnPa.ChildCount)); 
                    }
                } 
            }
        }

        internal void AssertTreeSemanticInvariants() 
        {
            if (Invariant.Strict) 
            { 
                for (int nAt = 0; nAt < Count; nAt++)
                { 
                    DocumentNode dn = EntryAt(nAt);
                    DocumentNode dnPa = dn.Parent;

                    switch (dn.Type) 
                    {
                        case DocumentNodeType.dnTableBody: 
                            Debug.Assert(dnPa != null && dnPa.Type == DocumentNodeType.dnTable); 
                            break;
                        case DocumentNodeType.dnRow: 
                            Debug.Assert(dnPa != null && dnPa.Type == DocumentNodeType.dnTableBody);
                            break;
                        case DocumentNodeType.dnCell:
                            Debug.Assert(dnPa != null && dnPa.Type == DocumentNodeType.dnRow); 
                            break;
                        case DocumentNodeType.dnListItem: 
                            Debug.Assert(dnPa != null && dnPa.Type == DocumentNodeType.dnList); 
                            break;
                    } 
                }
            }
        }
 
        internal void CloseAll()
        { 
            for (int nAt = 0; nAt < Count; nAt++) 
            {
                if (EntryAt(nAt).IsPending) 
                {
                    CloseAt(nAt);
                    break;
                } 
            }
        } 
 
        internal int CountOpenNodes(DocumentNodeType documentNodeType)
        { 
            int nOpen = 0;

            if (_dnaOpen != null)
            { 
                _dnaOpen.CullOpen();
                for (int i = _dnaOpen.Count - 1; i >= 0; i--) 
                { 
                    DocumentNode dn = _dnaOpen.EntryAt(i);
 
                    if (dn.IsPending)
                    {
                        if (dn.Type == documentNodeType)
                        { 
                            nOpen++;
                        } 
 
                        // Shape blocks nesting
                        else if (dn.Type == DocumentNodeType.dnShape) 
                        {
                            break;
                        }
                    } 
                }
            } 
 
            return nOpen;
        } 

        internal int CountOpenCells()
        {
            return CountOpenNodes(DocumentNodeType.dnCell); 
        }
 
        internal DocumentNode GetOpenParentWhileParsing(DocumentNode dn) 
        {
            if (_dnaOpen != null) 
            {
                _dnaOpen.CullOpen();
                for (int i = _dnaOpen.Count - 1; i >= 0; i--)
                { 
                    DocumentNode dnPa = _dnaOpen.EntryAt(i);
 
                    if (dnPa.IsPending && dnPa.Index < dn.Index) 
                    {
                        return dnPa; 
                    }
                }
            }
 
            return null;
        } 
 
        internal DocumentNodeType GetTableScope()
        { 
            if (_dnaOpen != null)
            {
                _dnaOpen.CullOpen();
                for (int i = _dnaOpen.Count - 1; i >= 0; i--) 
                {
                    DocumentNode dn = _dnaOpen.EntryAt(i); 
 
                    if (dn.IsPending)
                    { 
                        if (dn.Type == DocumentNodeType.dnTable
                            || dn.Type == DocumentNodeType.dnTableBody
                            || dn.Type == DocumentNodeType.dnRow
                            || dn.Type == DocumentNodeType.dnCell) 
                        {
                            return dn.Type; 
                        } 

                        // Shape blocks table structure 
                        else if (dn.Type == DocumentNodeType.dnShape)
                        {
                            return DocumentNodeType.dnParagraph;
                        } 
                    }
                } 
            } 

            return DocumentNodeType.dnParagraph; 
        }

        internal MarkerList GetOpenMarkerStyles()
        { 
            MarkerList ml = new MarkerList();
 
            if (_dnaOpen != null) 
            {
                _dnaOpen.CullOpen(); 
                int nShape = 0;
                for (int i = 0; i < _dnaOpen.Count; i++)
                {
                    DocumentNode dn = _dnaOpen.EntryAt(i); 

                    if (dn.IsPending && dn.Type == DocumentNodeType.dnShape) 
                    { 
                        nShape = i + 1;
                    } 
                }

                for (int i = nShape; i < _dnaOpen.Count; i++)
                { 
                    DocumentNode dn = _dnaOpen.EntryAt(i);
 
                    if (dn.IsPending && dn.Type == DocumentNodeType.dnList) 
                    {
                        ml.AddEntry(dn.FormatState.Marker, dn.FormatState.ILS, 
                                    dn.FormatState.StartIndex,
                                    dn.FormatState.StartIndexDefault, dn.VirtualListLevel);
                    }
                } 
            }
 
            return ml; 
        }
 
        internal MarkerList GetLastMarkerStyles(MarkerList mlHave, MarkerList mlWant)
        {
            MarkerList ml = new MarkerList();
            if (mlHave.Count > 0 || mlWant.Count == 0) 
            {
                return ml; 
            } 

            bool bAllBullet = true; 
            for (int i = Count - 1; i >= 0; i--)
            {
                DocumentNode dn = EntryAt(i);
 
                // Don't reopen a list across a table.
                if (dn.Type == DocumentNodeType.dnCell || dn.Type == DocumentNodeType.dnTable) 
                { 
                    break;
                } 

                if (dn.Type == DocumentNodeType.dnListItem)
                {
                    // Don't open a list item in a closed table. 
                    DocumentNode dnCell = dn.GetParentOfType(DocumentNodeType.dnCell);
                    if (dnCell != null && !dnCell.IsPending) 
                    { 
                        break;
                    } 

                    // Ignore list items in shapes - note the continue since these didn't effect list continuation.
                    DocumentNode dnShape = dn.GetParentOfType(DocumentNodeType.dnShape);
                    if (dnShape != null && !dnShape.IsPending) 
                    {
                        continue; 
                    } 

                    // OK, gather up the list structure that I'm potentially reopening. 
                    for (DocumentNode dnList = dn.Parent; dnList != null; dnList = dnList.Parent)
                    {
                        // Note that I'm building this list up in the reverse order of GetOpenMarkerStyles
                        if (dnList.Type == DocumentNodeType.dnList) 
                        {
                            MarkerListEntry mle = new MarkerListEntry(); 
 
                            mle.Marker = dnList.FormatState.Marker;
                            mle.StartIndexOverride = dnList.FormatState.StartIndex; 
                            mle.StartIndexDefault = dnList.FormatState.StartIndexDefault;
                            mle.VirtualListLevel = dnList.VirtualListLevel;
                            mle.ILS = dnList.FormatState.ILS;
                            ml.Insert(0, mle); 

                            if (mle.Marker != MarkerStyle.MarkerBullet) 
                            { 
                                bAllBullet = false;
                            } 
                        }
                    }

                    break; 
                }
            } 
 
            // If all bullets at one level, don't do the continuation thing for simpler content generation.
            if (ml.Count == 1 && bAllBullet) 
            {
                ml.RemoveRange(0, 1);
            }
 
            return ml;
        } 
 
        internal void OpenLastList()
        { 
            for (int i = Count - 1; i >= 0; i--)
            {
                DocumentNode dn = EntryAt(i);
 
                if (dn.Type == DocumentNodeType.dnListItem)
                { 
                    // Don't do this for lists in shapes. 
                    DocumentNode dnShape = dn.GetParentOfType(DocumentNodeType.dnShape);
                    if (dnShape != null && !dnShape.IsPending) 
                    {
                        continue;
                    }
 
                    // Make all this pending.
                    for (DocumentNode dnPa = dn; dnPa != null; dnPa = dnPa.Parent) 
                    { 
                        if (dnPa.Type == DocumentNodeType.dnList || dnPa.Type == DocumentNodeType.dnListItem)
                        { 
                            dnPa.IsPending = true;
                            _dnaOpen.InsertOpenNode(dnPa);
                        }
                    } 

                    break; 
                } 
            }
        } 

        internal void OpenLastCell()
        {
            // Be careful about nested cells - I want to open the last cell for the table/body/row that is 
            // currently pending, not the last cell in the depth-first walk of the tree.  So first find
            // the pending table scope. 
            for (int i = _dnaOpen.Count - 1; i >= 0; i--) 
            {
                DocumentNode dn = _dnaOpen.EntryAt(i); 

                if (dn.IsPending)
                {
                    if (dn.Type == DocumentNodeType.dnCell) 
                    {
                        // Nothing to do! 
                        return; 
                    }
                    else if (dn.Type == DocumentNodeType.dnTable 
                            || dn.Type == DocumentNodeType.dnTableBody
                            || dn.Type == DocumentNodeType.dnRow)
                    {
                        // OK, now find the cell 
                        for (int j = Count - 1; j >= 0; j--)
                        { 
                            DocumentNode ddn = EntryAt(j); 

                            // Yikes, better find a child first. 
                            if (ddn == dn)
                            {
                                Debug.Assert(false);
                                return; 
                            }
 
                            if (ddn.Type == DocumentNodeType.dnCell && ddn.GetParentOfType(dn.Type) == dn) 
                            {
                                for (DocumentNode dnPa = ddn; dnPa != null && dnPa != dn; dnPa = dnPa.Parent) 
                                {
                                    dnPa.IsPending = true;
                                    _dnaOpen.InsertOpenNode(dnPa);
                                } 

                                return; 
                            } 
                        }
                    } 
                }
            }
        }
 
        internal int FindPendingFrom(DocumentNodeType documentNodeType, int nStart, int nLow)
        { 
            if (_dnaOpen != null) 
            {
                _dnaOpen.CullOpen(); 
                for (int i = _dnaOpen.Count - 1; i >= 0; i--)
                {
                    DocumentNode dn = _dnaOpen.EntryAt(i);
 
                    if (dn.Index > nStart)
                    { 
                        continue; 
                    }
                    if (dn.Index <= nLow) 
                    {
                        break;
                    }
 
                    if (dn.IsPending)
                    { 
                        if (dn.Type == documentNodeType) 
                        {
                            return dn.Index; 
                        }

                        // Don't return pending elements across shape boundaries
                        else if (dn.Type == DocumentNodeType.dnShape) 
                        {
                            break; 
                        } 
                    }
                } 
            }

            return -1;
        } 

        internal int FindPending(DocumentNodeType documentNodeType, int nLow) 
        { 
            return FindPendingFrom(documentNodeType, Count - 1, nLow);
        } 

        internal int FindPending(DocumentNodeType documentNodeType)
        {
            return FindPending(documentNodeType, -1); 
        }
 
        internal int FindUnmatched(DocumentNodeType dnType) 
        {
            if (_dnaOpen != null) 
            {
                for (int i = _dnaOpen.Count - 1; i >= 0; i--)
                {
                    DocumentNode dn = _dnaOpen.EntryAt(i); 

                    if (dn.Type == dnType && !dn.IsMatched) 
                    { 
                        return dn.Index;
                    } 
                }
            }

            return -1; 
        }
 
        internal void EstablishTreeRelationships() 
        {
            // Record indices 
            int i;
            for (i = 0; i < Count; i++)
            {
                EntryAt(i).Index = i; 
            }
 
            for (i = 1; i < Count; i++) 
            {
                DocumentNode dnThis = EntryAt(i); 
                DocumentNode dnPrev = EntryAt(i - 1);

                // If prev isn't my parent, walk up its parent chain to find my parent
                if (dnPrev.ChildCount == 0) 
                {
                    for (dnPrev = dnPrev.Parent; dnPrev != null; dnPrev = dnPrev.Parent) 
                    { 
                        if (dnPrev.IsAncestorOf(dnThis))
                        { 
                            break;
                        }
                    }
                } 

                dnThis.Parent = dnPrev; 
            } 
        }
 
        internal void CullOpen()
        {
            int i = Count - 1;
            for (; i >= 0; i--) 
            {
                DocumentNode dn = EntryAt(i); 
 
                if (dn.Index >= 0 && dn.IsTrackedAsOpen)
                { 
                    break;
                }
            }
            int nCull = Count - (i + 1); 
            if (nCull > 0)
            { 
                RemoveRange(i + 1, nCull); 
            }
        } 

        internal void InsertOpenNode(DocumentNode dn)
        {
            CullOpen(); 

            int i = Count; 
            for (; i > 0; i--) 
            {
                if (dn.Index > EntryAt(i - 1).Index) 
                {
                    break;
                }
            } 
            Insert(i, dn);
        } 
 
        internal void InsertNode(int nAt, DocumentNode dn)
        { 
            Insert(nAt, dn);

            // Match sure Index values remain up-to-date.
            if (_fMain) 
            {
                dn.Index = nAt; 
                dn.DNA = this; 
                for (nAt++; nAt < Count; nAt++)
                { 
                    EntryAt(nAt).Index = nAt;
                }

                // Track open nodes 
                if (dn.IsTrackedAsOpen)
                { 
                    if (_dnaOpen == null) 
                    {
                        _dnaOpen = new DocumentNodeArray(); 
                    }
                    _dnaOpen.InsertOpenNode(dn);
                }
            } 
        }
 
        internal void InsertChildAt(DocumentNode dnParent, DocumentNode dnNew, int nInsertAt, int nChild) 
        {
            Debug.Assert(_fMain); 

            InsertNode(nInsertAt, dnNew);
            CloseAtHelper(nInsertAt, nChild);
 
            // Parent's parent shouldn't be the child document node
            if (dnParent != null && dnParent.Parent == dnNew) 
            { 
                Invariant.Assert(false, "Parent's Parent node shouldn't be the child node!");
            } 

            // Patch the child count of the ancestors
            dnNew.Parent = dnParent;
            for (; dnParent != null; dnParent = dnParent.ClosedParent) 
            {
                dnParent.ChildCount += 1; 
            } 

            AssertTreeInvariants(); 
        }

        internal void Excise(int nAt, int nExcise)
        { 
            DocumentNode dn = EntryAt(nAt);
 
            // Mark the nodes as deleted from main array 
            if (_fMain)
            { 
                int nEnd = nAt + nExcise;
                for (int i = nAt; i < nEnd; i++)
                {
                    DocumentNode dn1 = EntryAt(i); 
                    dn1.Index = -1;
                    dn1.DNA = null; 
                } 
            }
 
            // Remove from the array.
            RemoveRange(nAt, nExcise);

            if (_fMain) 
            {
                // Patch the child count of the ancestors 
                for (DocumentNode dnPa = dn.Parent; dnPa != null; dnPa = dnPa.Parent) 
                {
                    if (!dnPa.IsPending) 
                    {
                        Debug.Assert(dnPa.LastChildIndex >= nAt + nExcise - 1);
                        dnPa.ChildCount = dnPa.ChildCount - nExcise;
                    } 
                }
 
                // Patch the Index of trailing nodes 
                for (; nAt < Count; nAt++)
                { 
                    EntryAt(nAt).Index = nAt;
                }

                AssertTreeInvariants(); 
            }
        } 
 
        #endregion Internal Methods
 
        //-----------------------------------------------------
        //
        //  Internal Properties
        // 
        //-----------------------------------------------------
 
        #region Internal Properties 

        internal DocumentNode Top 
        {
            get
            {
                return Count > 0 ? EntryAt(Count - 1) : null; 
            }
        } 
 
        internal bool IsMain
        { 
            set
            {
                _fMain = value;
            } 
        }
 
        #endregion Internal Properties 

        //----------------------------------------------------- 
        //
        //  Private Methods
        //
        //------------------------------------------------------ 

        #region Private Methods 
 
        // 
        //      The PreCoalesce process for a ListItem involves seeing if I can migrate the left indent 
        //      from contained paragraphs to the ListItem itself.  This results in better bullet placement
        //      in the generated XAML.
        // 
 
        private void PreCoalesceListItem(DocumentNode dn)
        { 
            int nAt = dn.Index; 
            long nMargin = -1;
            int nEndItem = nAt + dn.ChildCount; 

            for (int nnAt = nAt + 1; nnAt <= nEndItem; nnAt++)
            {
                DocumentNode ddn = EntryAt(nnAt); 

                if (ddn.Type == DocumentNodeType.dnParagraph) 
                { 
                    if (nMargin == -1)
                    { 
                        nMargin = ddn.NearMargin;
                    }
                    else if (ddn.NearMargin < nMargin && ddn.IsNonEmpty)
                    { 
                        nMargin = ddn.NearMargin;
                    } 
                } 
            }
            dn.NearMargin = nMargin; 
            for (int nnAt = nAt; nnAt <= nEndItem; nnAt++)
            {
                DocumentNode ddn = EntryAt(nnAt);
 
                if (ddn.Type == DocumentNodeType.dnParagraph)
                { 
                    ddn.NearMargin = ddn.NearMargin - nMargin; 
                }
            } 
        }

        // 
        //      The PreCoalesce process for a List involves promoting the flowdirection if at all possible 
        //      from contained paragraphs to the list itself.  This ensures that Avalon displays the list
        //      bullets in the proper location. 
        //  

        private void PreCoalesceList(DocumentNode dn) 
        {
            int nAt = dn.Index;
            bool bConflict = false;
            DirState ds = DirState.DirDefault; 
            int nEndItem = nAt + dn.ChildCount;
            for (int nnAt = nAt + 1; !bConflict && nnAt <= nEndItem; nnAt++) 
            { 
                DocumentNode ddn = EntryAt(nnAt);
 
                if (ddn.Type == DocumentNodeType.dnParagraph && ddn.IsNonEmpty)
                {
                    if (ds == DirState.DirDefault)
                    { 
                        ds = ddn.FormatState.DirPara;
                    } 
                    else if (ds != ddn.FormatState.DirPara) 
                    {
                        bConflict = true; 
                    }
                }
            }
 
            // OK, promote if possible.
            if (!bConflict && ds != DirState.DirDefault) 
            { 
                for (int nnAt = nAt; nnAt <= nEndItem; nnAt++)
                { 
                    DocumentNode ddn = EntryAt(nnAt);

                    if (ddn.Type == DocumentNodeType.dnList || ddn.Type == DocumentNodeType.dnListItem)
                    { 
                        ddn.FormatState.DirPara = ds;
                    } 
                } 
            }
        } 

        // 
        //      Table column handling.  RTF tables allow each row to be arbitrarily aligned.  XAML (like HTML)
        //      doesn't allow that.  You can achieve that effect in HTML by inserting extra rows with spurious 
        //      cells propped to a specific width, but I'm not going to do that.  Instead, I'm going to split
        //      the rows into separate tables when combining some set of rows into a table would force me 
        //      to fabricate a column that doesn't contain any defined cell. 
        // 
 
        private int PreCoalesceTable(DocumentNode dn)
        {
            int nInserted = 0;
            int nAt = dn.Index; 
            ColumnStateArray cols = dn.ComputeColumns();
 
            // OK, now I have a set of columns and information about which row caused the column to 
            // be instantiated.  The naive algorithm is to strip the first N rows from the table until
            // the row that caused an uninstantiated column, break the table there, and then run the 
            // algorithm again on the trailing table.
            int nUnfilledRowIndex = cols.GetMinUnfilledRowIndex();

            if (nUnfilledRowIndex > 0) 
            {
                // OK, Need to insert a new table and table group around the remaining rows. 
                DocumentNode dnNewTable = new DocumentNode(DocumentNodeType.dnTable); 
                DocumentNode dnNewTableBody = new DocumentNode(DocumentNodeType.dnTableBody);
                dnNewTable.FormatState = new FormatState(dn.FormatState); 
                dnNewTable.FormatState.RowFormat = EntryAt(nUnfilledRowIndex).FormatState.RowFormat;
                int nChildrenOldTable = nUnfilledRowIndex - dn.Index - 1;
                int nChildrenNewTable = dn.ChildCount - nChildrenOldTable;
                dn.ChildCount = nChildrenOldTable;  // Update old table child count 
                EntryAt(nAt + 1).ChildCount = nChildrenOldTable - 1;    // Update old TableBody child count
                InsertNode(nUnfilledRowIndex, dnNewTableBody); 
                CloseAtHelper(nUnfilledRowIndex, nChildrenNewTable); 
                InsertNode(nUnfilledRowIndex, dnNewTable);
                CloseAtHelper(nUnfilledRowIndex, nChildrenNewTable + 1); 

                // Adjust parent pointers
                dnNewTableBody.Parent = dnNewTable;
                dnNewTable.Parent = dn.ClosedParent; 
                for (DocumentNode dnPa = dnNewTable.ClosedParent; dnPa != null; dnPa = dnPa.ClosedParent)
                { 
                    dnPa.ChildCount = dnPa.ChildCount + 2; 
                }
 
                // Adjust the loop end to account for the newly inserted elements
                nInserted = 2;

                // Need to recompute the ColumnStateArray for the newly truncated table. 
                dn.ColumnStateArray = dn.ComputeColumns();
            } 
            else 
            {
                dn.ColumnStateArray = cols; 
            }

            return nInserted;
        } 

        private void PreCoalesceRow(DocumentNode dn, ref bool fVMerged) 
        { 
            DocumentNodeArray dnaCells = dn.GetRowsCells();
            RowFormat rf = dn.FormatState.RowFormat; 
            DocumentNode dnTable = dn.GetParentOfType(DocumentNodeType.dnTable);
            ColumnStateArray csa = (dnTable != null) ? dnTable.ColumnStateArray : null;

            // Normally number of cells and cell definitions are equal, but be careful. 
            int nCount = dnaCells.Count < rf.CellCount ? dnaCells.Count : rf.CellCount;
 
            // Non-unary colspan can arise both because I have "merged" cells specified 
            // as well as because I just have cells that exactly span some other cols.
            // The code in PreCoalesce enforces that the cells line up, so I can just 
            // test for that here.

            int nColsSeen = 0;
            int i = 0; 
            while (i < nCount)
            { 
                DocumentNode dnCell = dnaCells.EntryAt(i); 
                CellFormat cf = rf.NthCellFormat(i);
                long cellx = cf.CellX; 

                // optimization - record if we encountered a vmerged cell
                if (cf.IsVMerge)
                { 
                    fVMerged = true;
                } 
 
                // Determine colspan based on cells we will eliminate through the merge flags
                if (cf.IsHMergeFirst) 
                {
                    for (i++; i < nCount; i++)
                    {
                        cf = rf.NthCellFormat(i); 
                        if (cf.IsVMerge)
                        { 
                            fVMerged = true; 
                        }
                        if (cf.IsHMerge) 
                        {
                            dnaCells.EntryAt(i).ColSpan = 0;    // zero means omit this cell
                        }
                    } 
                }
                else 
                { 
                    i++;
                } 

                // Determine actual colspan based on cellx value
                if (csa != null)
                { 
                    int nColStart = nColsSeen;
 
                    while (nColsSeen < csa.Count) 
                    {
                        ColumnState cs = csa.EntryAt(nColsSeen); 
                        nColsSeen++;

                        // This is the normal case
                        if (cs.CellX == cellx) 
                        {
                            break; 
                        } 

                        // This is anomalous, but can occur with odd \cellx values (non-monotonically increasing). 
                        if (cs.CellX > cellx)
                        {
                            break;
                        } 
                    }
 
                    if (nColsSeen - nColStart > dnCell.ColSpan) 
                    {
                        dnCell.ColSpan = nColsSeen - nColStart; 
                    }
                }
            }
        } 

        private void ProcessTableRowSpan(DocumentNodeArray dnaTables) 
        { 
            for (int i = 0; i < dnaTables.Count; i++)
            { 
                DocumentNode dnTable = dnaTables.EntryAt(i);
                ColumnStateArray csa = dnTable.ColumnStateArray;
                if (csa == null || csa.Count == 0)
                { 
                    continue;
                } 
                int nDim = csa.Count; 

                DocumentNodeArray dnaRows = dnTable.GetTableRows(); 
                DocumentNodeArray dnaSpanCells = new DocumentNodeArray();
                for (int k = 0; k < nDim; k++)
                {
                    dnaSpanCells.Add(null); 
                }
 
                for (int j = 0; j < dnaRows.Count; j++) 
                {
                    DocumentNode dnRow = dnaRows.EntryAt(j); 
                    RowFormat rf = dnRow.FormatState.RowFormat;
                    DocumentNodeArray dnaCells = dnRow.GetRowsCells();
                    int nCount = nDim;
                    if (rf.CellCount < nCount) 
                    {
                        nCount = rf.CellCount; 
                    } 
                    if (dnaCells.Count < nCount)
                    { 
                        nCount = dnaCells.Count;
                    }

                    // Nominally, the index into dnaSpanCells, dnaCells and RowFormat.NthCellFormat 
                    // should all be the same.  But in some cases we have spanning cells that don't
                    // actually have an explicit cell associated with it (the span is implicit in the 
                    // cellx/width values).  I can detect this case by finding a colspan > 1 that is 
                    // not then followed by a HMerged format.  In this case, I need to apply a correction
                    // to my iteration, since the ColumnStateArray will have an entry for that field. 

                    int kCSA = 0;   // this might advance faster
                    for (int k = 0; k < nCount && kCSA < dnaSpanCells.Count; k++)
                    { 
                        DocumentNode dnCell = dnaCells.EntryAt(k);
                        CellFormat cf = rf.NthCellFormat(k); 
                        if (cf.IsVMerge) 
                        {
                            DocumentNode dnSpanningCell = dnaSpanCells.EntryAt(kCSA); 
                            if (dnSpanningCell != null)
                            {
                                dnSpanningCell.RowSpan = dnSpanningCell.RowSpan + 1;
                            } 
                            kCSA += dnCell.ColSpan;
                            dnCell.ColSpan = 0; 
                        } 
                        else
                        { 
                            if (cf.IsVMergeFirst)
                            {
                                dnCell.RowSpan = 1;
                                dnaSpanCells[kCSA] = dnCell; 
                            }
                            else 
                            { 
                                dnaSpanCells[kCSA] = null;
                            } 
                            for (int l = kCSA + 1; l < kCSA + dnCell.ColSpan; l++)
                            {
                                dnaSpanCells[l] = null;
                            } 
                            kCSA += dnCell.ColSpan;
                        } 
                    } 
                }
            } 
        }

        #endregion PrivateMethods
 
        //-----------------------------------------------------
        // 
        //  Private Fields 
        //
        //------------------------------------------------------ 

        #region Private Fields

        private bool _fMain; 
        private DocumentNodeArray _dnaOpen;
 
        #endregion Private Fields 
    }
 
    /// 
    /// ConverterState
    /// 
    internal class ConverterState 
    {
        //------------------------------------------------------ 
        // 
        //  Constructors
        // 
        //-----------------------------------------------------

        #region Constructors
 
        /// 
        /// ConverterState Constructor 
        ///  
        internal ConverterState()
        { 
            _rtfFormatStack = new RtfFormatStack();
            _documentNodeArray = new DocumentNodeArray();
            _documentNodeArray.IsMain = true;
            _fontTable = new FontTable(); 
            _colorTable = new ColorTable();
            _listTable = new ListTable(); 
            _listOverrideTable = new ListOverrideTable(); 
            _defaultFont = -1;
            _defaultLang = -1; 
            _defaultLangFE = -1;
            _bMarkerWhiteSpace = false;
            _bMarkerPresent = false;
            _border = null; 
        }
 
        #endregion Constructors 

        //------------------------------------------------------ 
        //
        //  Internal Methods
        //
        //----------------------------------------------------- 

        #region Internal Methods 
 
        internal FormatState PreviousTopFormatState(int fromTop)
        { 
            return _rtfFormatStack.PrevTop(fromTop);
        }

        #endregion Internal Methods 

        //----------------------------------------------------- 
        // 
        //  Internal Properties
        // 
        //-----------------------------------------------------

        #region Internal Properties
 
        internal RtfFormatStack RtfFormatStack
        { 
            get 
            {
                return _rtfFormatStack; 
            }
        }

        internal FontTable FontTable 
        {
            get 
            { 
                return _fontTable;
            } 
        }

        internal ColorTable ColorTable
        { 
            get
            { 
                return _colorTable; 
            }
        } 

        internal ListTable ListTable
        {
            get 
            {
                return _listTable; 
            } 
        }
 
        internal ListOverrideTable ListOverrideTable
        {
            get
            { 
                return _listOverrideTable;
            } 
        } 

        internal DocumentNodeArray DocumentNodeArray 
        {
            get
            {
                return _documentNodeArray; 
            }
        } 
 
        internal FormatState TopFormatState
        { 
            get
            {
                return _rtfFormatStack.Top();
            } 
        }
 
        internal int CodePage 
        {
            get 
            {
                return _codePage;
            }
            set 
            {
                _codePage = value; 
            } 
        }
 
        internal long DefaultFont
        {
            get
            { 
                return _defaultFont;
            } 
            set 
            {
                _defaultFont = value; 
            }
        }

        internal long DefaultLang 
        {
            get 
            { 
                return _defaultLang;
            } 
            set
            {
                _defaultLang = value;
            } 
        }
 
        internal long DefaultLangFE 
        {
            get 
            {
                return _defaultLangFE;
            }
            set 
            {
                _defaultLangFE = value; 
            } 
        }
 
        internal bool IsMarkerWhiteSpace
        {
            get
            { 
                return _bMarkerWhiteSpace;
            } 
            set 
            {
                _bMarkerWhiteSpace = value; 
            }
        }

        internal bool IsMarkerPresent 
        {
            get 
            { 
                return _bMarkerPresent;
            } 
            set
            {
                _bMarkerPresent = value;
            } 
        }
 
        internal BorderFormat CurrentBorder 
        {
            get 
            {
                return _border;
            }
            set 
            {
                _border = value; 
            } 
        }
 
        #endregion Internal Properties

        //------------------------------------------------------
        // 
        //  Private Fields
        // 
        //----------------------------------------------------- 

        #region Private Fields 

        private RtfFormatStack _rtfFormatStack;
        private DocumentNodeArray _documentNodeArray;
        private FontTable _fontTable; 
        private ColorTable _colorTable;
        private ListTable _listTable; 
        private ListOverrideTable _listOverrideTable; 
        private long _defaultFont;
        private long _defaultLang; 
        private long _defaultLangFE;
        private int _codePage;
        private bool _bMarkerWhiteSpace;
        private bool _bMarkerPresent; 
        private BorderFormat _border;
 
        #endregion Private Fields 
    }
 
    /// 
    /// RtfToXamlReader
    /// 
    internal class RtfToXamlReader 
    {
        //------------------------------------------------------ 
        // 
        //  Constructors
        // 
        //------------------------------------------------------

        #region Constructors
 
        /// 
        /// RtfToXamlReader Constructor 
        ///  
        internal RtfToXamlReader(string rtfString)
        { 
            _rtfBytes = Encoding.Default.GetBytes(rtfString);
            _bForceParagraph = false;

            Initialize(); 
        }
 
        private void Initialize() 
        {
            _lexer = new RtfToXamlLexer(_rtfBytes); 

            _converterState = new ConverterState();
            _converterState.RtfFormatStack.Push();
 
            _outerXamlBuilder = new StringBuilder();
        } 
 
        #endregion Constructors
 
        //-----------------------------------------------------
        //
        //  Internal Methods
        // 
        //------------------------------------------------------
 
        #region Internal Methods 

        ///  
        /// RtfToXamlError process
        /// 
        internal RtfToXamlError Process()
        { 
            RtfToXamlError rtfToXamlError = RtfToXamlError.None;
 
            RtfToken token = new RtfToken(); 
            bool findUnknownDestinationToken = false;
 
            int nStartCount = _converterState.RtfFormatStack.Count;

            while (rtfToXamlError == RtfToXamlError.None)
            { 
                rtfToXamlError = _lexer.Next(token, _converterState.TopFormatState);
 
                if (rtfToXamlError != RtfToXamlError.None) 
                {
                    break; 
                }

                switch (token.Type)
                { 
                    case RtfTokenType.TokenGroupStart:
                        _converterState.RtfFormatStack.Push(); 
                        findUnknownDestinationToken = false; 
                        break;
 
                    case RtfTokenType.TokenGroupEnd:
                        ProcessGroupEnd();
                        findUnknownDestinationToken = false;
                        break; 

                    case RtfTokenType.TokenInvalid: 
                        rtfToXamlError = RtfToXamlError.InvalidFormat; 
                        break;
 
                    case RtfTokenType.TokenEOF:
                        // Handle any anomalous missing group ends.
                        while (_converterState.RtfFormatStack.Count > 2 && _converterState.RtfFormatStack.Count > nStartCount)
                            ProcessGroupEnd(); 

                        AppendDocument(); 
 
                        return RtfToXamlError.None;
 
                    case RtfTokenType.TokenDestination:
                        findUnknownDestinationToken = true;
                        break;
 
                    case RtfTokenType.TokenControl:
                        { 
                            RtfControlWordInfo controlWordInfo = token.RtfControlWordInfo; 

                            if (controlWordInfo != null && !findUnknownDestinationToken) 
                            {
                                if ((controlWordInfo.Flags & RtfControls.RTK_DESTINATION) != 0)
                                {
                                    findUnknownDestinationToken = true; 
                                }
                            } 
 
                            if (findUnknownDestinationToken)
                            { 
                                // Ignore unknown control on the current field result destination.
                                // Otherwise, the field result content will be ignoreed by the unknown rtf destination.
                                if (controlWordInfo != null &&
                                    controlWordInfo.Control == RtfControlWord.Ctrl_Unknown && 
                                    _converterState.TopFormatState.RtfDestination == RtfDestination.DestFieldResult)
                                { 
                                    controlWordInfo = null; 
                                }
                                else 
                                {
                                    _converterState.TopFormatState.RtfDestination = RtfDestination.DestUnknown;
                                }
                                findUnknownDestinationToken = false; 
                            }
 
                            if (controlWordInfo != null) 
                            {
                                HandleControl(token, controlWordInfo); 
                            }

                            break;
                        } 

                    case RtfTokenType.TokenText: 
                        ProcessText(token); 
                        break;
 
                    case RtfTokenType.TokenTextSymbol:
                        ProcessTextSymbol(token);
                        break;
 
                    case RtfTokenType.TokenNewline:
                    case RtfTokenType.TokenNullChar: 
                        // Eaten 
                        break;
 
                    case RtfTokenType.TokenPictureData:
                        ProcessImage(_converterState.TopFormatState);
                        break;
                } 
            }
 
            return rtfToXamlError; 
        }
 
        #endregion Internal Methods

        //-----------------------------------------------------
        // 
        //  Internal Properties
        // 
        //----------------------------------------------------- 

        #region Internal Properties 

        /// 
        /// Output Xaml string from converting of Rtf
        ///  
        internal string Output
        { 
            get 
            {
                return _outerXamlBuilder.ToString(); 
            }
        }

        internal bool ForceParagraph 
        {
            get 
            { 
                return _bForceParagraph;
            } 
            set
            {
                _bForceParagraph = value;
            } 
        }
 
        internal ConverterState ConverterState 
        {
            get 
            {
                return _converterState;
            }
        } 

        // WpfPayload package that containing the image for the specified Xaml 
        internal WpfPayload WpfPayload 
        {
            set 
            {
                _wpfPayload = value;
            }
        } 

        #endregion Internal Properties 
 
        //-----------------------------------------------------
        // 
        //  Internal Methods
        //
        //------------------------------------------------------
 
        #region Internal Methods
 
        internal bool TreeContainsBlock() 
        {
            DocumentNodeArray dna = _converterState.DocumentNodeArray; 

            for (int i = 0; i < dna.Count; i++)
            {
                DocumentNode documentNode = dna.EntryAt(i); 

                if (documentNode.Type == DocumentNodeType.dnParagraph || 
                    documentNode.Type == DocumentNodeType.dnList || 
                    documentNode.Type == DocumentNodeType.dnTable)
                { 
                    return true;
                }
            }
 
            return false;
        } 
 
        internal void AppendDocument()
        { 
            DocumentNodeArray dna = _converterState.DocumentNodeArray;

            // Remove any trailing whitespace that wasn't explicitly terminated
            while (dna.Count > 0) 
            {
                DocumentNode dnLast = dna.EntryAt(dna.Count - 1); 
 
                if (dnLast.IsInline && dnLast.IsWhiteSpace)
                { 
                    dna.Excise(dna.Count - 1, 1);
                }
                else
                { 
                    break;
                } 
            } 

            // If RTF ended with inline content and no \par, might need to force it. 
            if (ForceParagraph || TreeContainsBlock())
            {
                if (dna.Count > 0)
                { 
                    DocumentNode dnLast = dna.EntryAt(dna.Count - 1);
                    if (dnLast.IsInline) 
                    { 
                        FormatState formatState = _converterState.TopFormatState;
                        if (formatState != null) 
                        {
                            HandlePara(null, formatState);
                        }
                    } 
                }
            } 
 
            dna.CloseAll();
            dna.CoalesceAll(_converterState); 

            // Search for the paragraph node
            bool bBlock = ForceParagraph || TreeContainsBlock();
 
            // Add the document header
            if (bBlock) 
            { 
                _outerXamlBuilder.Append("
\r\n"); } else { _outerXamlBuilder.Append(""); } // Add the document content for (int i = 0; i < dna.Count; i++) { DocumentNode documentNode = dna.EntryAt(i); _outerXamlBuilder.Append(documentNode.Xaml); } // Add the document footer if (bBlock) { _outerXamlBuilder.Append("
"); } else { _outerXamlBuilder.Append(""); } } // // ProcessField is called when the \field group is closed. There should be content in this group with the // field instruction and the field result. All of these distinct content areas are wrapped by // dnField nodes. The RtfDestination in the FormatState of the DocumentNode specifies which field // property. // internal void ProcessField() { DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dnFieldBegin = null; DocumentNode dnFieldEnd = null; DocumentNode dnFieldInstBegin = null; DocumentNode dnFieldInstEnd = null; DocumentNode dnFieldResultBegin = null; DocumentNode dnFieldResultEnd = null; for (int i = dna.Count - 1; i >= 0 && dnFieldBegin == null; i--) { DocumentNode dn = dna.EntryAt(i); if (dn.Type == DocumentNodeType.dnFieldBegin) { switch (dn.FormatState.RtfDestination) { case RtfDestination.DestFieldInstruction: dnFieldInstBegin = dn; break; case RtfDestination.DestFieldResult: dnFieldResultBegin = dn; break; case RtfDestination.DestField: dnFieldBegin = dn; break; } } else if (dn.Type == DocumentNodeType.dnFieldEnd) { switch (dn.FormatState.RtfDestination) { case RtfDestination.DestFieldInstruction: dnFieldInstEnd = dn; break; case RtfDestination.DestFieldResult: dnFieldResultEnd = dn; break; case RtfDestination.DestField: dnFieldEnd = dn; break; } } } // This is anomalous - bad input? if (dnFieldBegin == null || dnFieldEnd == null) { return; } // Get the text of the instruction to determine how to handle it. DocumentNode dnInstruction = null; string pictureUri = null; if (dnFieldInstBegin != null && dnFieldInstEnd != null) { if (dnFieldInstEnd.Index > dnFieldInstBegin.Index + 1) { string instructionName = string.Empty; // Get the field instruction from the each text node of the // field instruction child for (int fieldInstruction = dnFieldInstBegin.Index + 1; fieldInstruction < dnFieldInstEnd.Index; fieldInstruction++) { DocumentNode dnChild = dna.EntryAt(fieldInstruction); if (dnChild.Type == DocumentNodeType.dnText) { instructionName += dnChild.Xaml; } } if (instructionName.Length > 0 && instructionName[0] == ' ') { instructionName = instructionName.Substring(1); } // Processs the instruction as hyperlink or symbol if (instructionName.IndexOf("HYPERLINK", StringComparison.Ordinal) == 0) { dnInstruction = ProcessHyperlinkField(instructionName); } else if (instructionName.IndexOf("SYMBOL", StringComparison.Ordinal) == 0) { dnInstruction = ProcessSymbolField(instructionName); } else if (instructionName.IndexOf("INCLUDEPICTURE", StringComparison.Ordinal) == 0) { pictureUri = GetIncludePictureUri(instructionName); } } } // Get rid of everything but field result contents if (dnFieldInstBegin != null && dnFieldInstEnd != null) { int nInst = dnFieldInstEnd.Index - dnFieldInstBegin.Index + 1; dna.Excise(dnFieldInstBegin.Index, nInst); } if (dnFieldResultBegin != null) dna.Excise(dnFieldResultBegin.Index, 1); if (dnFieldResultEnd != null) dna.Excise(dnFieldResultEnd.Index, 1); // Record the region that is going to be spanned by the new field node. int nInsertAt = dnFieldBegin.Index; int nChildCount = dnFieldEnd.Index - dnFieldBegin.Index - 1; DocumentNode dnPa = dnFieldBegin.ClosedParent; // Get rid of the field nodes themselves. dna.Excise(dnFieldBegin.Index, 1); dna.Excise(dnFieldEnd.Index, 1); if (pictureUri != null && nChildCount != 0) { DocumentNode dnImage = dna.EntryAt(nInsertAt); if (dnImage.Type == DocumentNodeType.dnImage) { // Replace the Image UriSource with the picture uri. // IE copying rtf content has the bogus wmetafile so the image quality // is very low. Now we replace image with the included picture uri to get // the image directly from the specified Uri. int uriSourceIndex = dnImage.Xaml.IndexOf("UriSource=", StringComparison.Ordinal); int uriSourceEndIndex = dnImage.Xaml.IndexOf("\"", uriSourceIndex + 11, StringComparison.Ordinal); string imageXaml = dnImage.Xaml.Substring(0, uriSourceIndex); imageXaml += "UriSource=\"" + pictureUri + "\""; imageXaml += dnImage.Xaml.Substring(uriSourceEndIndex + 1); dnImage.Xaml = imageXaml; } } // Now insert the node around the results. if (dnInstruction != null) { // Never insert an inline node around block content. For example, Word/HTML allows hyperlinks // around any content, but in XAML hyperlinks are only inline. bool bOK = true; if (dnInstruction.IsInline) { for (int i = nInsertAt; bOK && i < nInsertAt + nChildCount; i++) { if (dna.EntryAt(i).IsBlock) { bOK = false; } } } if (bOK) { // Insert the instruction node if it is text(symbol) or has the child count for // hyperlink or include picture if (dnInstruction.Type == DocumentNodeType.dnText || nChildCount != 0) { dna.InsertChildAt(dnPa, dnInstruction, nInsertAt, nChildCount); // No, don't coalesce since spanned content may need paragraph parent to determine props. // dna.CoalesceChildren(_converterState, nInsertAt); } } // If hyperlink, need to wrap each paragraph's contents, since XAML treats hyperlink as inline. else if (dnInstruction.Type == DocumentNodeType.dnHyperlink) { dnInstruction.AppendXamlPrefix(_converterState); for (int i = nInsertAt; i < nInsertAt + nChildCount; i++) { DocumentNode dn = dna.EntryAt(i); if (dn.Type == DocumentNodeType.dnParagraph && !dn.IsTerminated) { Debug.Assert(dn.ChildCount == 0); StringBuilder sb = new StringBuilder(dnInstruction.Xaml); sb.Append(dn.Xaml); sb.Append(""); dn.Xaml = sb.ToString(); } } // If I have trailing text that is not yet in a para, I need to wrap that as well int nInline = 0; int nInlineAt = nInsertAt + nChildCount - 1; for (; nInlineAt >= nInsertAt; nInlineAt--) { DocumentNode dn = dna.EntryAt(nInlineAt); if (dn.IsInline) { nInline++; } else { break; } } if (nInline > 0) { WrapInlineInParagraph(nInlineAt + 1, nInline); DocumentNode dn = dna.EntryAt(nInlineAt + 1); if (dn.Type == DocumentNodeType.dnParagraph && !dn.IsTerminated) { Debug.Assert(dn.ChildCount == 0); StringBuilder sb = new StringBuilder(dnInstruction.Xaml); sb.Append(dn.Xaml); sb.Append(""); dn.Xaml = sb.ToString(); } } } } // If I processed a field result with block content, it's possible I left some hanging // inline nodes unwrapped in a paragraph before the field. Let's look for them and clean them up. bool bBlock = false; for (int i = nInsertAt; !bBlock && i < dna.Count; i++) { DocumentNode dn = dna.EntryAt(i); bBlock = dn.IsBlock; } if (bBlock) { int nVisible = 0; nChildCount = 0; for (int i = nInsertAt - 1; i >= 0; i--) { DocumentNode dn = dna.EntryAt(i); if (dn.IsInline || dn.IsHidden) { nChildCount++; if (!dn.IsHidden) { nVisible++; } } if (dn.IsBlock) { nChildCount -= dn.ChildCount; break; } } if (nVisible > 0) { WrapInlineInParagraph(nInsertAt - nChildCount, nChildCount); } } } private int HexToInt(char c) { if (c >= '0' && c <= '9') { return (c - '0'); } else if (c >= 'a' && c <= 'f') { return (10 + c - 'a'); } else if (c >= 'A' && c <= 'F') { return (10 + c - 'A'); } else { return 0; } } private int DecToInt(char c) { if (c >= '0' && c <= '9') { return (c - '0'); } else { return 0; } } // Return the included picture Uri private string GetIncludePictureUri(string instructionName) { string pictureUri = null; int uriIndex = instructionName.IndexOf("http:", StringComparison.OrdinalIgnoreCase); if (uriIndex != -1) { pictureUri = instructionName.Substring(uriIndex, instructionName.Length - uriIndex - 1); int pictureUriEndIndex = pictureUri.IndexOf("\"", StringComparison.OrdinalIgnoreCase); if (pictureUriEndIndex != -1) { pictureUri = pictureUri.Substring(0, pictureUriEndIndex); } if (!Uri.IsWellFormedUriString(pictureUri, UriKind.Absolute)) { pictureUri = null; } } return pictureUri; } internal DocumentNode ProcessHyperlinkField(string instr) { DocumentNode dn = new DocumentNode(DocumentNodeType.dnHyperlink); dn.FormatState = new FormatState(_converterState.PreviousTopFormatState(0)); string sUri = null; string sTarget = null; string sBookmark = null; bool bTargetNext = false; bool bBookmarkNext = false; // iterate, starting past " HYPERLINK" int i = 10; while (i < instr.Length) { // Skip spaces if (instr[i] == ' ') { i++; } // NavigateUri? else if (instr[i] == '"') { i++; if (i < instr.Length) { int iStart = i; int iEnd = i; for (; iEnd < instr.Length; iEnd++) { if (instr[iEnd] == '"') { break; } } string param = instr.Substring(iStart, iEnd - iStart); if (bTargetNext) { sTarget = param; bTargetNext = false; } else if (bBookmarkNext) { sBookmark = param; bBookmarkNext = false; } else if (sUri == null) sUri = param; // else eat the string i = iEnd + 1; } } // Instructions else if (instr[i] == '\\') { i++; if (i < instr.Length) { switch (instr[i]) { case 'l': // bookmark bBookmarkNext = true; bTargetNext = false; break; case 't': // target bBookmarkNext = false; bTargetNext = true; break; } i++; } } // Ignore other characters else i++; } StringBuilder sb = new StringBuilder(); if (sUri != null) { sb.Append(sUri); } if (sBookmark != null) { sb.Append("#"); sb.Append(sBookmark); } // Remove the second backslash(which rtf specified) to keep only single backslash for (int uriIndex = 0; uriIndex < sb.Length; uriIndex++) { if (sb[uriIndex] == '\\' && uriIndex + 1 < sb.Length && sb[uriIndex + 1] == '\\') { // Remove the sceond backslash sb.Remove(uriIndex + 1, 1); } } dn.NavigateUri = sb.ToString(); return dn.NavigateUri.Length > 0 ? dn : null; } internal DocumentNode ProcessSymbolField(string instr) { DocumentNode dn = new DocumentNode(DocumentNodeType.dnText); dn.FormatState = new FormatState(_converterState.PreviousTopFormatState(0)); int nChar = -1; EncodeType encodeType = EncodeType.Ansi; // iterate, starting past " SYMBOL" int i = 7; while (i < instr.Length) { // Skip spaces if (instr[i] == ' ') { i++; } // Is this the character code? else if (nChar == -1 && instr[i] >= '0' && instr[i] <= '9') { // Hex or decimal? if (instr[i] == '0' && i < instr.Length - 1 && instr[i + 1] == 'x') { i += 2; nChar = 0; for (; i < instr.Length && instr[i] != ' ' && instr[i] != '\\'; i++) { if (nChar < 0xFFFF) { nChar = (nChar * 16) + HexToInt(instr[i]); } } } else { nChar = 0; for (; i < instr.Length && instr[i] != ' ' && instr[i] != '\\'; i++) { if (nChar < 0xFFFF) { nChar = (nChar * 10) + DecToInt(instr[i]); } } } } // Instructions else if (instr[i] == '\\') { i++; if (i < instr.Length) { ProcessSymbolFieldInstruction(dn, instr, ref i, ref encodeType); } } else { i++; } } // If no character code was specified, just bail if (nChar == -1) { return null; } // Otherwise, convert it to text ConvertSymbolCharValueToText(dn, nChar, encodeType); return (dn.Xaml != null && dn.Xaml.Length > 0) ? dn : null; } private void ProcessSymbolFieldInstruction(DocumentNode dn, string instr, ref int i, ref EncodeType encodeType) { int iStart = 0; switch (instr[i++]) { case 'a': encodeType = EncodeType.Ansi; break; case 'u': encodeType = EncodeType.Unicode; break; case 'j': encodeType = EncodeType.ShiftJis; break; case 'h': // linespacing instruction: ignore break; case 's': if (i < instr.Length && instr[i] == ' ') i++; // font size in points, not half-points iStart = i; for (; i < instr.Length && instr[i] != ' '; i++) { continue; } string ptString = instr.Substring(iStart, i - iStart); // Now convert number part bool ret = true; double d = 0f; try { d = System.Convert.ToDouble(ptString, CultureInfo.InvariantCulture); } catch (System.OverflowException) { ret = false; } catch (System.FormatException) { ret = false; } if (ret) { dn.FormatState.FontSize = (long)((d * 2) + 0.5); } break; case 'f': // Font Name if (i < instr.Length && instr[i] == ' ') { i++; } if (i < instr.Length && instr[i] == '"') { i++; } iStart = i; for (; i < instr.Length && instr[i] != '"'; i++) { continue; } string name = instr.Substring(iStart, i - iStart); // Move past trailing double-quote i++; if (name != null && name.Length > 0) { dn.FormatState.Font = _converterState.FontTable.DefineEntryByName(name); } break; } } // Process image that create image node for generating Xaml Image control // Disable inlining to avoid loading System.Drawing.Bitmap without need [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] internal void ProcessImage(FormatState formatState) { string contentType; string imagePartUriString; switch (formatState.ImageFormat) { case RtfImageFormat.Wmf: case RtfImageFormat.Png: contentType = "image/png"; break; case RtfImageFormat.Jpeg: contentType = "image/jpeg"; break; default: contentType = string.Empty; break; } bool skipImage = (formatState.ImageScaleWidth < 0) || (formatState.ImageScaleHeight < 0); if (_wpfPayload != null && contentType != string.Empty && !skipImage) { // Get image part URI string and image binary steam to write Rtf image data // into the container of WpfPayload Stream imageStream = _wpfPayload.CreateImageStream(_imageCount, contentType, out imagePartUriString); using (imageStream) { if (formatState.ImageFormat != RtfImageFormat.Wmf) { // Write the image binary data on the container from Rtf image data _lexer.WriteImageData(imageStream, formatState.IsImageDataBinary); } else { // Read the windows metafile from the rtf content and then convert it // to bitmap data then save it as PNG on the container image part MemoryStream metafileStream = new MemoryStream(); ; using (metafileStream) { // Get Windows Metafile from rtf content _lexer.WriteImageData(metafileStream, formatState.IsImageDataBinary); metafileStream.Position = 0; // Create the metafile from the windows metafile data that is on rtf content System.Drawing.Imaging.Metafile metafile = new System.Drawing.Imaging.Metafile(metafileStream); // Save image from the metafile to the container's image part as PNG type metafile.Save(imageStream, System.Drawing.Imaging.ImageFormat.Png); } } } // Increase the image count to generate the image source name _imageCount++; formatState.ImageSource = imagePartUriString; // Create the image document node DocumentNode dnImage = new DocumentNode(DocumentNodeType.dnImage); dnImage.FormatState = formatState; StringBuilder imageStringBuilder = new StringBuilder(); // Add the xaml image element imageStringBuilder.Append(""); // Add the image source property as the complex property // This is for specifying BitmapImage.CacheOption as OnLoad instead of // the default OnDemand option. imageStringBuilder.Append(""); imageStringBuilder.Append(""); imageStringBuilder.Append(""); imageStringBuilder.Append(""); // Set Xaml for image element dnImage.Xaml = imageStringBuilder.ToString(); // Insert the image document node to the document node array DocumentNodeArray dna = _converterState.DocumentNodeArray; dna.Push(dnImage); dna.CloseAt(dna.Count - 1); } else { // Skip the image data if the image type is unknown or WpfPayload is null _lexer.AdvanceForImageData(); } } private void ConvertSymbolCharValueToText(DocumentNode dn, int nChar, EncodeType encodeType) { switch (encodeType) { case EncodeType.Unicode: if (nChar < 0xFFFF) { char[] unicodeChar = new char[1]; unicodeChar[0] = (char)nChar; dn.AppendXamlEncoded(new string(unicodeChar)); } break; case EncodeType.ShiftJis: if (nChar < 0xFFFF) { // NB: How to interpret this numeric value as Shift-JIS? Encoding ec = Encoding.GetEncoding(932); int nChars = nChar > 256 ? 2 : 1; byte[] ba = new byte[2]; if (nChars == 1) { ba[0] = (byte)nChar; } else { ba[0] = (byte)((nChar >> 8) & 0xFF); ba[1] = (byte)(nChar & 0xFF); } dn.AppendXamlEncoded(ec.GetString(ba, 0, nChars)); } break; default: if (nChar < 256) { // Keep the byte char value as the unicode char singleChar = (char) nChar; dn.AppendXamlEncoded(new string(singleChar, 1)); } break; } } internal void ProcessListText() { DocumentNodeArray dna = _converterState.DocumentNodeArray; int ndnListText = dna.FindPending(DocumentNodeType.dnListText); if (ndnListText >= 0) { DocumentNode dnListText = dna.EntryAt(ndnListText); dna.CloseAt(ndnListText); // If I didn't throw away a picture, need to actually test for content. bool bWS = true; if (dnListText.HasMarkerContent) { bWS = false; } else { int nEnd = ndnListText + dnListText.ChildCount; for (int i = ndnListText + 1; bWS && i <= nEnd; i++) { DocumentNode dnText = dna.EntryAt(i); if (!dnText.IsWhiteSpace) { bWS = false; } } } dna.CoalesceChildren(_converterState, ndnListText); if (bWS) { _converterState.IsMarkerWhiteSpace = true; } dnListText.Xaml = string.Empty; _converterState.IsMarkerPresent = true; } } internal void ProcessShapeResult() { DocumentNodeArray dna = _converterState.DocumentNodeArray; int nAt = dna.FindPending(DocumentNodeType.dnShape); if (nAt >= 0) { // Make sure any pending inlines are wrapped. FormatState formatState = _converterState.TopFormatState; if (formatState != null) { WrapPendingInlineInParagraph(null, formatState); } // No structures should leak out of a shape result dna.CloseAt(nAt); } } private void ProcessRtfDestination(FormatState fsCur) { DocumentNodeArray dna = _converterState.DocumentNodeArray; int nAt; switch (fsCur.RtfDestination) { case RtfDestination.DestField: nAt = dna.FindUnmatched(DocumentNodeType.dnFieldBegin); if (nAt >= 0) { DocumentNode dnEnd = new DocumentNode(DocumentNodeType.dnFieldEnd); dnEnd.FormatState = new FormatState(fsCur); dnEnd.IsPending = false; dna.Push(dnEnd); dna.EntryAt(nAt).IsMatched = true; ProcessField(); } break; case RtfDestination.DestFieldInstruction: case RtfDestination.DestFieldPrivate: case RtfDestination.DestFieldResult: nAt = dna.FindUnmatched(DocumentNodeType.dnFieldBegin); if (nAt >= 0) { DocumentNode dnEnd = new DocumentNode(DocumentNodeType.dnFieldEnd); dnEnd.FormatState = new FormatState(fsCur); dnEnd.IsPending = false; dna.Push(dnEnd); dna.EntryAt(nAt).IsMatched = true; } break; // The DestShape destination is only to distinguish the case of leaving a shaperesult destination // when shapes were nested. No processing is actually necessary here. case RtfDestination.DestShape: break; case RtfDestination.DestShapeResult: ProcessShapeResult(); break; case RtfDestination.DestListText: ProcessListText(); break; case RtfDestination.DestListLevel: { ListTableEntry listTableEntry = _converterState.ListTable.CurrentEntry; if (listTableEntry != null) { ListLevel listLevel = listTableEntry.Levels.CurrentEntry; listLevel.FormatState = new FormatState(fsCur); } } break; case RtfDestination.DestListOverride: break; case RtfDestination.DestList: break; case RtfDestination.DestFontName: FontTableEntry entry = _converterState.FontTable.CurrentEntry; if (entry != null) { entry.IsNameSealed = true; entry.IsPending = false; } break; case RtfDestination.DestFontTable: _converterState.FontTable.MapFonts(); break; } } internal void ProcessGroupEnd() { // Pop the state for this group. Don't overpop if we are handed bad input if (_converterState.RtfFormatStack.Count > 2) { DocumentNodeArray dna = _converterState.DocumentNodeArray; FormatState fsCur = _converterState.PreviousTopFormatState(0); FormatState fsNew = _converterState.PreviousTopFormatState(1); // Various interesting actions are taken when the destination changes if (fsCur.RtfDestination != fsNew.RtfDestination) { ProcessRtfDestination(fsCur); } else if (fsNew.RtfDestination == RtfDestination.DestFontTable) { FontTableEntry entry = _converterState.FontTable.CurrentEntry; if (entry != null) { entry.IsPending = false; } } _converterState.RtfFormatStack.Pop(); if (fsNew.CodePage == -1) { _lexer.CodePage = _converterState.CodePage; } else { _lexer.CodePage = fsNew.CodePage; } // After seeing font table, setup default font for current state. if (fsCur.RtfDestination == RtfDestination.DestFontTable && _converterState.DefaultFont >= 0) { SelectFont(_converterState.DefaultFont); } // If we ever pop to a state without a default font, re-assert it. else if (fsCur.Font < 0 && _converterState.DefaultFont >= 0) { SelectFont(_converterState.DefaultFont); } } } internal void SelectFont(long nFont) { FormatState formatState = _converterState.TopFormatState; if (formatState == null) { return; } formatState.Font = nFont; FontTableEntry entry = _converterState.FontTable.FindEntryByIndex((int)formatState.Font); if (entry != null) { if (entry.CodePage == -1) { formatState.CodePage = _converterState.CodePage; } else { formatState.CodePage = entry.CodePage; } _lexer.CodePage = formatState.CodePage; } } internal void HandleControl(RtfToken token, RtfControlWordInfo controlWordInfo) { FormatState formatState = _converterState.TopFormatState; if (formatState == null) { return; } switch (controlWordInfo.Control) { case RtfControlWord.Ctrl_V: formatState.IsHidden = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_DELETED: formatState.IsHidden = true; break; case RtfControlWord.Ctrl_B: formatState.Bold = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_I: formatState.Italic = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_IMPR: formatState.Engrave = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_OUTL: formatState.Outline = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_SHAD: formatState.Shadow = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_SCAPS: formatState.SCaps = token.ToggleValue > 0; break; case RtfControlWord.Ctrl_FS: if (Validators.IsValidFontSize(token.Parameter)) formatState.FontSize = token.Parameter; break; case RtfControlWord.Ctrl_EXPND: case RtfControlWord.Ctrl_EXPNDTW: formatState.Expand = token.Parameter; break; case RtfControlWord.Ctrl_F: if (token.HasParameter) if (formatState.RtfDestination == RtfDestination.DestFontTable) { _converterState.FontTable.DefineEntry((int)token.Parameter); } else { SelectFont(token.Parameter); // Setting font also sets current language in effect if (formatState.FontSlot == FontSlot.DBCH) { if (formatState.LangFE > 0) { formatState.LangCur = formatState.LangFE; } else if (_converterState.DefaultLangFE > 0) { formatState.LangCur = _converterState.DefaultLangFE; } } else { if (formatState.Lang > 0) { formatState.LangCur = formatState.Lang; } else if (_converterState.DefaultLang > 0) { formatState.LangCur = _converterState.DefaultLang; } } } break; case RtfControlWord.Ctrl_DBCH: formatState.FontSlot = FontSlot.DBCH; break; case RtfControlWord.Ctrl_LOCH: formatState.FontSlot = FontSlot.LOCH; break; case RtfControlWord.Ctrl_HICH: formatState.FontSlot = FontSlot.HICH; break; case RtfControlWord.Ctrl_LANG: formatState.Lang = token.Parameter; formatState.LangCur = token.Parameter; break; case RtfControlWord.Ctrl_LANGFE: formatState.LangFE = token.Parameter; break; case RtfControlWord.Ctrl_DEFLANG: _converterState.DefaultLang = token.Parameter; break; case RtfControlWord.Ctrl_DEFLANGFE: _converterState.DefaultLangFE = token.Parameter; break; case RtfControlWord.Ctrl_DEFF: _converterState.DefaultFont = token.Parameter; break; case RtfControlWord.Ctrl_FNAME: { FormatState previousFormatState = _converterState.PreviousTopFormatState(1); if (previousFormatState.RtfDestination == RtfDestination.DestFontTable) { formatState.RtfDestination = RtfDestination.DestFontName; FontTableEntry entry = _converterState.FontTable.CurrentEntry; if (entry != null) { entry.Name = null; } } } break; case RtfControlWord.Ctrl_FCHARSET: if (formatState.RtfDestination == RtfDestination.DestFontTable) { HandleFontTableTokens(token); } break; case RtfControlWord.Ctrl_HIGHLIGHT: formatState.CB = token.Parameter; break; case RtfControlWord.Ctrl_CB: formatState.CB = token.Parameter; break; case RtfControlWord.Ctrl_CF: formatState.CF = token.Parameter; break; case RtfControlWord.Ctrl_SUB: formatState.Sub = token.FlagValue; if (formatState.Sub) { formatState.Super = false; } break; case RtfControlWord.Ctrl_SUPER: formatState.Super = token.FlagValue; if (formatState.Super) { formatState.Sub = false; } break; case RtfControlWord.Ctrl_NOSUPERSUB: formatState.Sub = false; formatState.Super = false; formatState.SuperOffset = 0; break; case RtfControlWord.Ctrl_UP: formatState.SuperOffset = token.Parameter; break; case RtfControlWord.Ctrl_ULC: // NB: underline color not implemented break; case RtfControlWord.Ctrl_UL: case RtfControlWord.Ctrl_ULD: case RtfControlWord.Ctrl_ULDASH: case RtfControlWord.Ctrl_ULDASHD: case RtfControlWord.Ctrl_ULDASHDD: case RtfControlWord.Ctrl_ULDB: case RtfControlWord.Ctrl_ULHAIR: case RtfControlWord.Ctrl_ULHWAVE: case RtfControlWord.Ctrl_ULLDASH: case RtfControlWord.Ctrl_ULTH: case RtfControlWord.Ctrl_ULTHD: case RtfControlWord.Ctrl_ULTHDASH: case RtfControlWord.Ctrl_ULTHDASHD: case RtfControlWord.Ctrl_ULTHDASHDD: case RtfControlWord.Ctrl_ULTHLDASH: case RtfControlWord.Ctrl_ULULDBWAVE: case RtfControlWord.Ctrl_ULWAVE: case RtfControlWord.Ctrl_ULW: formatState.UL = (token.ToggleValue > 0 ? ULState.ULNormal : ULState.ULNone); break; case RtfControlWord.Ctrl_ULNONE: formatState.UL = ULState.ULNone; break; case RtfControlWord.Ctrl_STRIKE: formatState.Strike = token.ToggleValue > 0 ? StrikeState.StrikeNormal : StrikeState.StrikeNone; break; case RtfControlWord.Ctrl_STRIKED: formatState.Strike = token.ToggleValue > 0 ? StrikeState.StrikeDouble : StrikeState.StrikeNone; break; case RtfControlWord.Ctrl_PLAIN: formatState.SetCharDefaults(); if (_converterState.DefaultFont >= 0) { SelectFont(_converterState.DefaultFont); } break; // Paragraph settings case RtfControlWord.Ctrl_PARD: formatState.SetParaDefaults(); break; case RtfControlWord.Ctrl_SB: formatState.SB = token.Parameter; break; case RtfControlWord.Ctrl_SA: formatState.SA = token.Parameter; break; case RtfControlWord.Ctrl_FI: // Word first indent(\fiN) and Avalon TextIndent concept is the different. // So we ignore the negative first indent safely which can make the content invisible. // Word: \fi-200 -200 0 200 // abc // xyz // Word: \fi200 -200 0 200 // abc // xyz if (token.Parameter > 0) { formatState.FI = token.Parameter; } break; case RtfControlWord.Ctrl_LIN: // We ignore \lin and do RTL fixup on margins outselves. // formatState.LI = token.Parameter; break; case RtfControlWord.Ctrl_LI: formatState.LI = token.Parameter; break; case RtfControlWord.Ctrl_RIN: // We ignore \rin and do RTL fixup on margins outselves. // formatState.RI = token.Parameter; break; case RtfControlWord.Ctrl_RI: formatState.RI = token.Parameter; break; case RtfControlWord.Ctrl_QC: formatState.HAlign = HAlign.AlignCenter; break; case RtfControlWord.Ctrl_QJ: formatState.HAlign = HAlign.AlignJustify; break; case RtfControlWord.Ctrl_QL: formatState.HAlign = HAlign.AlignLeft; break; case RtfControlWord.Ctrl_QR: formatState.HAlign = HAlign.AlignRight; break; case RtfControlWord.Ctrl_CFPAT: formatState.CFPara = token.Parameter; break; case RtfControlWord.Ctrl_SHADING: // Shading of the CFPAT color, in 100's of a percent. formatState.ParaShading = token.Parameter; break; case RtfControlWord.Ctrl_CBPAT: formatState.CBPara = token.Parameter; break; case RtfControlWord.Ctrl_SL: formatState.SL = token.Parameter; break; case RtfControlWord.Ctrl_SLMULT: formatState.SLMult = token.ToggleValue > 0; break; // Special text case RtfControlWord.Ctrl_LINE: ProcessHardLine(token, formatState); break; // LTR-RTL stuff case RtfControlWord.Ctrl_LTRCH: formatState.DirChar = DirState.DirLTR; break; case RtfControlWord.Ctrl_LTRPAR: case RtfControlWord.Ctrl_LTRDOC: case RtfControlWord.Ctrl_LTRSECT: formatState.DirPara = DirState.DirLTR; break; case RtfControlWord.Ctrl_RTLCH: formatState.DirChar = DirState.DirRTL; break; case RtfControlWord.Ctrl_RTLPAR: case RtfControlWord.Ctrl_RTLDOC: case RtfControlWord.Ctrl_RTLSECT: formatState.DirPara = DirState.DirRTL; // RTF defaults paragraph alignment to left for both RTL and LTR paragraphs, but // Avalon switches the default. Hard-code the alignment here when dealing with RTL // paragraphs so that the distinction doesn't result in different defaults. if (formatState.HAlign == HAlign.AlignDefault) { formatState.HAlign = HAlign.AlignLeft; } break; case RtfControlWord.Ctrl_LTRMARK: ProcessText(new string('\x200e', 1)); break; case RtfControlWord.Ctrl_RTLMARK: ProcessText(new string('\x200f', 1)); break; // Structure output case RtfControlWord.Ctrl_PAR: case RtfControlWord.Ctrl_SECT: HandlePara(token, formatState); break; case RtfControlWord.Ctrl_PAGE: HandlePage(token, formatState); break; // Table Tokens case RtfControlWord.Ctrl_CELL: case RtfControlWord.Ctrl_NESTCELL: case RtfControlWord.Ctrl_ROW: case RtfControlWord.Ctrl_TROWD: case RtfControlWord.Ctrl_NESTROW: case RtfControlWord.Ctrl_NESTTABLEPROPS: HandleTableTokens(token, formatState); break; // Table property tokens case RtfControlWord.Ctrl_TRGAPH: case RtfControlWord.Ctrl_TRLEFT: case RtfControlWord.Ctrl_TRQC: case RtfControlWord.Ctrl_TRQL: case RtfControlWord.Ctrl_TRQR: case RtfControlWord.Ctrl_TRPADDL: case RtfControlWord.Ctrl_TRPADDR: case RtfControlWord.Ctrl_TRPADDB: case RtfControlWord.Ctrl_TRPADDT: case RtfControlWord.Ctrl_TRPADDFL: case RtfControlWord.Ctrl_TRPADDFT: case RtfControlWord.Ctrl_TRPADDFB: case RtfControlWord.Ctrl_TRPADDFR: case RtfControlWord.Ctrl_TRFTSWIDTH: case RtfControlWord.Ctrl_TRFTSWIDTHB: case RtfControlWord.Ctrl_TRFTSWIDTHA: case RtfControlWord.Ctrl_TRWWIDTH: case RtfControlWord.Ctrl_TRWWIDTHB: case RtfControlWord.Ctrl_TRWWIDTHA: case RtfControlWord.Ctrl_TRAUTOFIT: case RtfControlWord.Ctrl_CLWWIDTH: case RtfControlWord.Ctrl_CLFTSWIDTH: case RtfControlWord.Ctrl_TRBRDRT: case RtfControlWord.Ctrl_TRBRDRB: case RtfControlWord.Ctrl_TRBRDRR: case RtfControlWord.Ctrl_TRBRDRL: case RtfControlWord.Ctrl_TRBRDRV: case RtfControlWord.Ctrl_TRBRDRH: case RtfControlWord.Ctrl_CLVERTALT: case RtfControlWord.Ctrl_CLVERTALB: case RtfControlWord.Ctrl_CLVERTALC: case RtfControlWord.Ctrl_CLSHDRAWNIL: case RtfControlWord.Ctrl_CLSHDNG: case RtfControlWord.Ctrl_CLBRDRB: case RtfControlWord.Ctrl_CLBRDRR: case RtfControlWord.Ctrl_CLBRDRT: case RtfControlWord.Ctrl_CLBRDRL: case RtfControlWord.Ctrl_CLCBPAT: case RtfControlWord.Ctrl_CLCFPAT: case RtfControlWord.Ctrl_CLPADL: case RtfControlWord.Ctrl_CLPADFL: case RtfControlWord.Ctrl_CLPADR: case RtfControlWord.Ctrl_CLPADFR: case RtfControlWord.Ctrl_CLPADT: case RtfControlWord.Ctrl_CLPADFT: case RtfControlWord.Ctrl_CLPADB: case RtfControlWord.Ctrl_CLPADFB: case RtfControlWord.Ctrl_CELLX: case RtfControlWord.Ctrl_BRDRART: case RtfControlWord.Ctrl_BRDRB: case RtfControlWord.Ctrl_BRDRNIL: case RtfControlWord.Ctrl_BRDRNONE: case RtfControlWord.Ctrl_BRDRTBL: case RtfControlWord.Ctrl_BRDRBAR: case RtfControlWord.Ctrl_BRDRBTW: case RtfControlWord.Ctrl_BRDRCF: case RtfControlWord.Ctrl_BRDRDASH: case RtfControlWord.Ctrl_BRDRDASHD: case RtfControlWord.Ctrl_BRDRDASHDD: case RtfControlWord.Ctrl_BRDRDASHDOTSTR: case RtfControlWord.Ctrl_BRDRDASHSM: case RtfControlWord.Ctrl_BRDRDB: case RtfControlWord.Ctrl_BRDRDOT: case RtfControlWord.Ctrl_BRDREMBOSS: case RtfControlWord.Ctrl_BRDRENGRAVE: case RtfControlWord.Ctrl_BRDRFRAME: case RtfControlWord.Ctrl_BRDRHAIR: case RtfControlWord.Ctrl_BRDRINSET: case RtfControlWord.Ctrl_BRDRL: case RtfControlWord.Ctrl_BRDROUTSET: case RtfControlWord.Ctrl_BRDRR: case RtfControlWord.Ctrl_BRDRS: case RtfControlWord.Ctrl_BRDRSH: case RtfControlWord.Ctrl_BRDRT: case RtfControlWord.Ctrl_BRDRTH: case RtfControlWord.Ctrl_BRDRTHTNLG: case RtfControlWord.Ctrl_BRDRTHTNMG: case RtfControlWord.Ctrl_BRDRTHTNSG: case RtfControlWord.Ctrl_BRDRTNTHLG: case RtfControlWord.Ctrl_BRDRTNTHMG: case RtfControlWord.Ctrl_BRDRTNTHSG: case RtfControlWord.Ctrl_BRDRTNTHTNLG: case RtfControlWord.Ctrl_BRDRTNTHTNMG: case RtfControlWord.Ctrl_BRDRTNTHTNSG: case RtfControlWord.Ctrl_BRDRTRIPLE: case RtfControlWord.Ctrl_BRDRW: case RtfControlWord.Ctrl_BRDRWAVY: case RtfControlWord.Ctrl_BRDRWAVYDB: case RtfControlWord.Ctrl_BRSP: case RtfControlWord.Ctrl_BOX: case RtfControlWord.Ctrl_RTLROW: case RtfControlWord.Ctrl_LTRROW: case RtfControlWord.Ctrl_TRSPDB: case RtfControlWord.Ctrl_TRSPDFB: case RtfControlWord.Ctrl_TRSPDFL: case RtfControlWord.Ctrl_TRSPDFR: case RtfControlWord.Ctrl_TRSPDFT: case RtfControlWord.Ctrl_TRSPDL: case RtfControlWord.Ctrl_TRSPDR: case RtfControlWord.Ctrl_TRSPDT: case RtfControlWord.Ctrl_CLMGF: case RtfControlWord.Ctrl_CLMRG: case RtfControlWord.Ctrl_CLVMGF: case RtfControlWord.Ctrl_CLVMRG: HandleTableProperties(token, formatState); break; // Symbols case RtfControlWord.Ctrl_TAB: ProcessText("\t"); break; case RtfControlWord.Ctrl_EMDASH: ProcessText("\x2014"); break; case RtfControlWord.Ctrl_ENDASH: ProcessText("\x2013"); break; case RtfControlWord.Ctrl_EMSPACE: ProcessText("\x2003"); break; case RtfControlWord.Ctrl_ENSPACE: ProcessText("\x2002"); break; case RtfControlWord.Ctrl_QMSPACE: ProcessText("\x2005"); break; case RtfControlWord.Ctrl_BULLET: ProcessText("\x2022"); // Unicode bullet break; case RtfControlWord.Ctrl_LQUOTE: ProcessText("\x2018"); break; case RtfControlWord.Ctrl_RQUOTE: ProcessText("\x2019"); break; case RtfControlWord.Ctrl_LDBLQUOTE: ProcessText("\x201c"); break; case RtfControlWord.Ctrl_RDBLQUOTE: ProcessText("\x201d"); break; case RtfControlWord.Ctrl_ZWJ: // zero-width-joiner ProcessText("\x200d"); break; case RtfControlWord.Ctrl_ZWNJ: // zero-width-non-joiner ProcessText("\x200c"); break; case RtfControlWord.Ctrl_ANSICPG: // This is just a hint for RTF output roundtripping - ignore. break; // CodePage Tokens case RtfControlWord.Ctrl_ANSI: case RtfControlWord.Ctrl_MAC: case RtfControlWord.Ctrl_PC: case RtfControlWord.Ctrl_PCA: case RtfControlWord.Ctrl_UPR: case RtfControlWord.Ctrl_UD: case RtfControlWord.Ctrl_UC: HandleCodePageTokens(token, formatState); break; case RtfControlWord.Ctrl_U: HandleCodePageTokens(token, formatState); _lexer.AdvanceForUnicode(formatState.UnicodeSkip); break; // Field (hyperlink) commands case RtfControlWord.Ctrl_FIELD: case RtfControlWord.Ctrl_FLDRSLT: case RtfControlWord.Ctrl_FLDINST: case RtfControlWord.Ctrl_FLDPRIV: HandleFieldTokens(token, formatState); break; // Structure commands case RtfControlWord.Ctrl_ILVL: formatState.ILVL = token.Parameter; break; case RtfControlWord.Ctrl_INTBL: formatState.IsInTable = token.FlagValue; break; case RtfControlWord.Ctrl_LS: if (formatState.RtfDestination == RtfDestination.DestListOverride) { HandleListTokens(token, formatState); } else { formatState.ILS = token.Parameter; } break; case RtfControlWord.Ctrl_ITAP: formatState.ITAP = token.Parameter; break; // Other special parsing commands case RtfControlWord.Ctrl_BIN: HandleBinControl(token, formatState); break; // List Table commands case RtfControlWord.Ctrl_LIST: case RtfControlWord.Ctrl_LISTTEMPLATEID: case RtfControlWord.Ctrl_LISTHYBRID: case RtfControlWord.Ctrl_LISTSIMPLE: case RtfControlWord.Ctrl_LISTLEVEL: case RtfControlWord.Ctrl_LISTTEXT: case RtfControlWord.Ctrl_LEVELNFC: case RtfControlWord.Ctrl_LEVELNFCN: case RtfControlWord.Ctrl_LEVELJC: case RtfControlWord.Ctrl_LEVELJCN: case RtfControlWord.Ctrl_LEVELFOLLOW: case RtfControlWord.Ctrl_LEVELSTARTAT: case RtfControlWord.Ctrl_LEVELSPACE: case RtfControlWord.Ctrl_LEVELINDENT: case RtfControlWord.Ctrl_LEVELTEXT: case RtfControlWord.Ctrl_LEVELTEMPLATEID: case RtfControlWord.Ctrl_LISTID: case RtfControlWord.Ctrl_LEVELNUMBERS: case RtfControlWord.Ctrl_LISTOVERRIDE: HandleListTokens(token, formatState); break; case RtfControlWord.Ctrl_LISTPICTURE: formatState.RtfDestination = RtfDestination.DestListPicture; break; // Old-style list info case RtfControlWord.Ctrl_PNLVL: case RtfControlWord.Ctrl_PNLVLBLT: case RtfControlWord.Ctrl_PNLVLBODY: case RtfControlWord.Ctrl_PNLVLCONT: case RtfControlWord.Ctrl_PNCARD: case RtfControlWord.Ctrl_PNDEC: case RtfControlWord.Ctrl_PNUCLTR: case RtfControlWord.Ctrl_PNUCRM: case RtfControlWord.Ctrl_PNLCLTR: case RtfControlWord.Ctrl_PNLCRM: case RtfControlWord.Ctrl_PNORD: case RtfControlWord.Ctrl_PNORDT: case RtfControlWord.Ctrl_PNBIDIA: case RtfControlWord.Ctrl_PNBIDIB: case RtfControlWord.Ctrl_PN: case RtfControlWord.Ctrl_PNTXTA: case RtfControlWord.Ctrl_PNTXTB: case RtfControlWord.Ctrl_PNTEXT: case RtfControlWord.Ctrl_PNSTART: HandleOldListTokens(token, formatState); break; // Shapes (we only read down-level info) case RtfControlWord.Ctrl_DO: case RtfControlWord.Ctrl_SHPRSLT: case RtfControlWord.Ctrl_DPTXBXTEXT: case RtfControlWord.Ctrl_SHPPICT: case RtfControlWord.Ctrl_NONSHPPICT: HandleShapeTokens(token, formatState); break; // Document tables case RtfControlWord.Ctrl_FONTTBL: formatState.RtfDestination = RtfDestination.DestFontTable; break; case RtfControlWord.Ctrl_COLORTBL: formatState.RtfDestination = RtfDestination.DestColorTable; break; case RtfControlWord.Ctrl_LISTTABLE: formatState.RtfDestination = RtfDestination.DestListTable; break; case RtfControlWord.Ctrl_LISTOVERRIDETABLE: formatState.RtfDestination = RtfDestination.DestListOverrideTable; break; case RtfControlWord.Ctrl_RED: if (formatState.RtfDestination == RtfDestination.DestColorTable) { _converterState.ColorTable.NewRed = (byte)token.Parameter; } break; case RtfControlWord.Ctrl_GREEN: if (formatState.RtfDestination == RtfDestination.DestColorTable) _converterState.ColorTable.NewGreen = (byte)token.Parameter; break; case RtfControlWord.Ctrl_BLUE: if (formatState.RtfDestination == RtfDestination.DestColorTable) { _converterState.ColorTable.NewBlue = (byte)token.Parameter; } break; case RtfControlWord.Ctrl_SHPINST: formatState.RtfDestination = RtfDestination.DestShapeInstruction; break; case RtfControlWord.Ctrl_PICT: { FormatState previousFormatState = _converterState.PreviousTopFormatState(1); // Filter the redundant picture or list picture if ((previousFormatState.RtfDestination == RtfDestination.DestShapePicture || previousFormatState.RtfDestination == RtfDestination.DestShapeInstruction) || (previousFormatState.RtfDestination != RtfDestination.DestNoneShapePicture && previousFormatState.RtfDestination != RtfDestination.DestShape && previousFormatState.RtfDestination != RtfDestination.DestListPicture)) { formatState.RtfDestination = RtfDestination.DestPicture; } } break; case RtfControlWord.Ctrl_PNGBLIP: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageFormat = RtfImageFormat.Png; } break; case RtfControlWord.Ctrl_JPEGBLIP: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageFormat = RtfImageFormat.Jpeg; } break; case RtfControlWord.Ctrl_WMETAFILE: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageFormat = RtfImageFormat.Wmf; } break; case RtfControlWord.Ctrl_PICHGOAL: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageHeight = Converters.TwipToPositivePx(token.Parameter); } break; case RtfControlWord.Ctrl_PICWGOAL: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageWidth = Converters.TwipToPositivePx(token.Parameter); } break; case RtfControlWord.Ctrl_PICSCALEX: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageScaleWidth = token.Parameter; } break; case RtfControlWord.Ctrl_PICSCALEY: if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.ImageScaleHeight = token.Parameter; } break; } } internal void ProcessText(RtfToken token) { FormatState fs = _converterState.TopFormatState; if (fs.IsHidden) { return; } switch (fs.RtfDestination) { case RtfDestination.DestFieldResult: case RtfDestination.DestShapeResult: case RtfDestination.DestNormal: case RtfDestination.DestListText: HandleNormalText(token.Text, fs); break; case RtfDestination.DestFontTable: case RtfDestination.DestFontName: ProcessFontTableText(token); break; case RtfDestination.DestColorTable: ProcessColorTableText(token); break; case RtfDestination.DestField: case RtfDestination.DestFieldInstruction: case RtfDestination.DestFieldPrivate: ProcessFieldText(token); break; } } internal void ProcessTextSymbol(RtfToken token) { // Quoted control character (be generous) - should be limited to "'-*;\_{|}~" if (token.Text.Length == 0) { return; } // Set token text with the quoted control character SetTokenTextWithControlCharacter(token); switch (_converterState.TopFormatState.RtfDestination) { case RtfDestination.DestNormal: case RtfDestination.DestFieldResult: case RtfDestination.DestShapeResult: case RtfDestination.DestListText: HandleNormalText(token.Text, _converterState.TopFormatState); break; case RtfDestination.DestFontTable: ProcessFontTableText(token); break; case RtfDestination.DestColorTable: ProcessColorTableText(token); break; case RtfDestination.DestField: case RtfDestination.DestFieldInstruction: case RtfDestination.DestFieldPrivate: ProcessFieldText(token); break; } } internal void HandleBinControl(RtfToken token, FormatState formatState) { if (token.Parameter > 0) { if (formatState.RtfDestination == RtfDestination.DestPicture) { formatState.IsImageDataBinary = true; } else { _lexer.AdvanceForBinary((int)token.Parameter); } } } internal void HandlePara(RtfToken token, FormatState formatState) { // Ignore \par in other destinations if (!formatState.IsContentDestination || formatState.IsHidden) { return; } // Arrival of paragraph tag allows us to rationalize structure information. // Various tags have told us things about this paragraph: // \INTBL: Paragraph is inside a table cell. // \ITAP{N}: Nesting level for table. Note that I may not have yet // seen any tags that start the nested table. // \LS{N}: Listtable override index. Any value indicates this paragraph // is in a list. // \ILVL: Nesting level for list. // If we're in a throw-away destination, just return. HandleParagraphFromText(formatState); // Make sure proper number of tables are open to reflect this paragraphs nest level HandleTableNesting(formatState); // Now handle lists, which always behave as if they are inside tables. HandleListNesting(formatState); } internal void WrapPendingInlineInParagraph(RtfToken token, FormatState formatState) { // Ignore \par in other destinations if (!formatState.IsContentDestination || formatState.IsHidden) { return; } // Only treat \page as \par if there is already some inline content. In normal cases, // (e.g. Word output) a page break comes between paragraphs and we don't want to emit // anything extra in that case. DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dn; // Insert the paragraph before any text or inline nodes at the top of the stack. int nNoOpValue = dna.Count; int nInsertAt = dna.Count; // Default insertion location for (; nInsertAt > 0; nInsertAt--) { dn = dna.EntryAt(nInsertAt - 1); if (!dn.IsInline || dn.ClosedParent != null || !dn.IsMatched) { break; } // If we only have listtext on the stack, don't force a para. else if (dn.Type == DocumentNodeType.dnListText && !dn.IsPending && nInsertAt + dn.ChildCount == dna.Count) { nNoOpValue = nInsertAt - 1; } } // If there are no inline nodes, don't generate extra content. if (nInsertAt == nNoOpValue) { return; } // Otherwise, just treat as paragraph mark HandlePara(token, formatState); } internal void HandlePage(RtfToken token, FormatState formatState) { WrapPendingInlineInParagraph(token, formatState); } internal void HandleParagraphFromText(FormatState formatState) { DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dn; // Insert the paragraph before any text or inline nodes at the top of the stack. int nInsertAt = dna.Count; // Default insertion location for (; nInsertAt > 0; nInsertAt--) { dn = dna.EntryAt(nInsertAt - 1); if (!dn.IsInline || (dn.ClosedParent != null && !dn.ClosedParent.IsInline) || !dn.IsMatched) { break; } } dn = new DocumentNode(DocumentNodeType.dnParagraph); dn.FormatState = new FormatState(formatState); dn.ConstrainFontPropagation(formatState); dna.InsertNode(nInsertAt, dn); // Now close immediately. dna.CloseAt(nInsertAt); dna.CoalesceOnlyChildren(_converterState, nInsertAt); } internal void WrapInlineInParagraph(int nInsertAt, int nChildren) { DocumentNodeArray dna = _converterState.DocumentNodeArray; Debug.Assert(nInsertAt >= 0 && nChildren > 0 && nInsertAt + nChildren - 1 < dna.Count); DocumentNode dnChild = dna.EntryAt(nInsertAt + nChildren - 1); DocumentNode dn = new DocumentNode(DocumentNodeType.dnParagraph); dn.FormatState = new FormatState(dnChild.FormatState); dn.ConstrainFontPropagation(dn.FormatState); DocumentNode dnParent = null; // Parent shouldn't be the child of new inserted document node // to avoid the infinite loop on InsertChildAt() if (dnChild.ClosedParent != null && dnChild.ClosedParent.Index < nInsertAt && dnChild.ClosedParent.Index > (nInsertAt + nChildren - 1)) { dnParent = dnChild.ClosedParent; } dna.InsertChildAt(dnParent, dn, nInsertAt, nChildren); dna.CoalesceOnlyChildren(_converterState, nInsertAt); } internal void ProcessPendingTextAtRowEnd() { DocumentNodeArray dna = _converterState.DocumentNodeArray; // Remove any pending inline content before closing the row. int nExcise = 0; for (int i = dna.Count - 1; i >= 0; i--) { DocumentNode dn = dna.EntryAt(i); if (dn.IsInline && dn.ClosedParent == null) { nExcise++; } else { break; } } if (nExcise > 0) { dna.Excise(dna.Count - nExcise, nExcise); } } internal void HandleTableTokens(RtfToken token, FormatState formatState) { FormatState fsCur = _converterState.PreviousTopFormatState(0); FormatState fsOld = _converterState.PreviousTopFormatState(1); if (fsCur == null || fsOld == null) { return; } // Propagate current destination into nested table props destination keyword if (token.RtfControlWordInfo.Control == RtfControlWord.Ctrl_NESTTABLEPROPS) { fsCur.RtfDestination = fsOld.RtfDestination; } if (!formatState.IsContentDestination) { return; } DocumentNodeArray dna = _converterState.DocumentNodeArray; int nCellAt; bool bOldHide = formatState.IsHidden; switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_CELL: // Force a paragraph // Set intbl and itap values, then use paragraph code. formatState.IsInTable = true; formatState.ITAP = 1; formatState.IsHidden = false; HandlePara(token, formatState); formatState.IsHidden = bOldHide; nCellAt = dna.FindPending(DocumentNodeType.dnCell); if (nCellAt >= 0) { dna.CloseAt(nCellAt); // Don't coalesce cell tag itself, since I might not have yet read the properties // I need for writing out the cell attributes. // Actually, even paragraph tags inside cell needs to have table info. // dna.CoalesceOnlyChildren(_converterState, nCellAt); } break; case RtfControlWord.Ctrl_NESTCELL: // Force a paragraph out. formatState.IsHidden = false; HandlePara(token, formatState); formatState.IsHidden = bOldHide; // If we encounter an open row before an open cell, we need to open a new cell. // Or if we only have one level of table currently open. int nOpenCells = dna.CountOpenCells(); DocumentNodeType scope = dna.GetTableScope(); if (scope != DocumentNodeType.dnCell || nOpenCells < 2) { HandlePara(token, formatState); } // Now close the currently open cell nCellAt = dna.FindPending(DocumentNodeType.dnCell); if (nCellAt >= 0) { dna.CloseAt(nCellAt); // Don't coalesce cell tag itself, since I might not have yet read the properties // I need for writing out the cell attributes. // Actually, even paragraph tags inside cell needs to have table info. // dna.CoalesceOnlyChildren(_converterState, nCellAt); } break; case RtfControlWord.Ctrl_TROWD: formatState.IsHidden = false; formatState.SetRowDefaults(); formatState.IsHidden = bOldHide; break; case RtfControlWord.Ctrl_ROW: case RtfControlWord.Ctrl_NESTROW: // Word puts out \row properties both before and after the cell contents. // \nestrow properties are only put out *after* the cell contents. formatState.IsHidden = false; int nRowAt = dna.FindPending(DocumentNodeType.dnRow); if (nRowAt >= 0) { DocumentNode dnRow = dna.EntryAt(nRowAt); if (formatState.RowFormat != null) { dnRow.FormatState.RowFormat = new RowFormat(formatState.RowFormat); dnRow.FormatState.RowFormat.CanonicalizeWidthsFromRTF(); // Also cache the row information in the table node int nTable = dna.FindPendingFrom(DocumentNodeType.dnTable, nRowAt - 1, -1); if (nTable >= 0) { DocumentNode dnTable = dna.EntryAt(nTable); if (!dnTable.FormatState.HasRowFormat) { dnTable.FormatState.RowFormat = dnRow.FormatState.RowFormat; } } } // Anomalous, but possible for illegal content. ProcessPendingTextAtRowEnd(); dna.CloseAt(nRowAt); // Don't coalesce - I need to examine all cells before writing things out // dna.CoalesceChildren(_converterState, nRowAt); } formatState.IsHidden = bOldHide; break; case RtfControlWord.Ctrl_NESTTABLEPROPS: // Handled above. break; } } internal ListOverride GetControllingListOverride() { ListTable lt = _converterState.ListTable; ListOverrideTable lot = _converterState.ListOverrideTable; RtfFormatStack formats = _converterState.RtfFormatStack; for (int i = formats.Count - 1; i >= 0; i--) { FormatState fs = formats.EntryAt(i); if (fs.RtfDestination == RtfDestination.DestListOverride) { return lot.CurrentEntry; } else if (fs.RtfDestination == RtfDestination.DestListTable) { return null; } } return null; } internal ListLevelTable GetControllingLevelTable() { ListTable lt = _converterState.ListTable; ListOverrideTable lot = _converterState.ListOverrideTable; RtfFormatStack formats = _converterState.RtfFormatStack; for (int i = formats.Count - 1; i >= 0; i--) { FormatState fs = formats.EntryAt(i); if (fs.RtfDestination == RtfDestination.DestListOverride) { ListOverride lo = lot.CurrentEntry; if (lo.Levels == null) { lo.Levels = new ListLevelTable(); } return lo.Levels; } else if (fs.RtfDestination == RtfDestination.DestListTable) { ListTableEntry lte = lt.CurrentEntry; if (lte != null) { return lte.Levels; } } } return null; } internal void HandleListTokens(RtfToken token, FormatState formatState) { ListTable listTable = _converterState.ListTable; ListOverrideTable listOverrideTable = _converterState.ListOverrideTable; FormatState fsCur = _converterState.PreviousTopFormatState(0); FormatState fsOld = _converterState.PreviousTopFormatState(1); if (fsCur == null || fsOld == null) { return; } switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_LIST: if (formatState.RtfDestination == RtfDestination.DestListTable) { ListTableEntry listTableEntry = listTable.AddEntry(); } break; case RtfControlWord.Ctrl_LISTTEMPLATEID: { ListTableEntry listTableEntry = listTable.CurrentEntry; if (listTableEntry != null) { listTableEntry.TemplateID = token.Parameter; } } break; case RtfControlWord.Ctrl_LISTHYBRID: case RtfControlWord.Ctrl_LISTSIMPLE: { ListTableEntry listTableEntry = listTable.CurrentEntry; if (listTableEntry != null) { listTableEntry.Simple = token.RtfControlWordInfo.Control == RtfControlWord.Ctrl_LISTSIMPLE; } } break; case RtfControlWord.Ctrl_LISTLEVEL: { formatState.RtfDestination = RtfDestination.DestListLevel; ListLevelTable levels = GetControllingLevelTable(); if (levels != null) { ListLevel listLevel = levels.AddEntry(); } } break; case RtfControlWord.Ctrl_LISTTEXT: if (fsOld.IsContentDestination || formatState.IsHidden) { formatState.RtfDestination = RtfDestination.DestListText; DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dnl = new DocumentNode(DocumentNodeType.dnListText); dnl.FormatState = new FormatState(formatState); dna.Push(dnl); } break; case RtfControlWord.Ctrl_LEVELNFC: case RtfControlWord.Ctrl_LEVELNFCN: { ListLevelTable levels = GetControllingLevelTable(); if (levels != null) { ListLevel listLevel = levels.CurrentEntry; if (listLevel != null) { listLevel.Marker = (MarkerStyle)token.Parameter; } } } break; case RtfControlWord.Ctrl_LEVELJC: case RtfControlWord.Ctrl_LEVELJCN: // NB: Marker alignment not supported in XAML. break; case RtfControlWord.Ctrl_LEVELFOLLOW: break; case RtfControlWord.Ctrl_LEVELSTARTAT: { ListLevelTable levels = GetControllingLevelTable(); if (levels != null) { ListLevel listLevel = levels.CurrentEntry; if (listLevel != null) { listLevel.StartIndex = token.Parameter; } else { // This is the case where the list override *only* specifies startat override. ListOverride lo = GetControllingListOverride(); if (lo != null) { lo.StartIndex = token.Parameter; } } } } break; case RtfControlWord.Ctrl_LEVELSPACE: break; case RtfControlWord.Ctrl_LEVELINDENT: break; case RtfControlWord.Ctrl_LEVELTEXT: break; case RtfControlWord.Ctrl_LEVELTEMPLATEID: break; case RtfControlWord.Ctrl_LISTID: { if (formatState.RtfDestination == RtfDestination.DestListOverride) { ListOverride listOverride = listOverrideTable.CurrentEntry; if (listOverride != null) { listOverride.ID = token.Parameter; } } else { ListTableEntry listTableEntry = listTable.CurrentEntry; if (listTableEntry != null) { listTableEntry.ID = token.Parameter; } } } break; case RtfControlWord.Ctrl_LEVELNUMBERS: break; case RtfControlWord.Ctrl_LISTOVERRIDE: { FormatState previousFormatState = _converterState.PreviousTopFormatState(1); if (previousFormatState.RtfDestination == RtfDestination.DestListOverrideTable) { formatState.RtfDestination = RtfDestination.DestListOverride; ListOverride listOverride = listOverrideTable.AddEntry(); } } break; case RtfControlWord.Ctrl_LS: if (formatState.RtfDestination == RtfDestination.DestListOverride) { ListOverride listOverride = listOverrideTable.CurrentEntry; if (listOverride != null) { listOverride.Index = token.Parameter; } } break; } } internal void HandleShapeTokens(RtfToken token, FormatState formatState) { DocumentNodeArray dna = _converterState.DocumentNodeArray; FormatState fsCur = _converterState.PreviousTopFormatState(0); FormatState fsOld = _converterState.PreviousTopFormatState(1); if (fsCur == null || fsOld == null) { return; } switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_DO: // Just propagate destination through this keyword. fsCur.RtfDestination = fsOld.RtfDestination; break; case RtfControlWord.Ctrl_SHPRSLT: if (fsOld.IsContentDestination) { fsCur.RtfDestination = RtfDestination.DestShape; } break; case RtfControlWord.Ctrl_DPTXBXTEXT: if (fsOld.IsContentDestination) { // Track the destination so I can recognize when we leave this scope. fsCur.RtfDestination = RtfDestination.DestShapeResult; // Wrap any inline content that occurs before this shape anchor in a paragraph, // since the shape content itself will be block level. WrapPendingInlineInParagraph(token, formatState); DocumentNodeType t = dna.GetTableScope(); if (t != DocumentNodeType.dnParagraph) { if (t == DocumentNodeType.dnTableBody) { // If row has been closed, close overall table as well. int nAt = dna.FindPending(DocumentNodeType.dnTable); if (nAt >= 0) { dna.CloseAt(nAt); dna.CoalesceChildren(_converterState, nAt); } } else { // If I'm inside a table, reopen last cell to insert shape contents. Otherwise // table gets torqued. dna.OpenLastCell(); } } // The shape node generates no output but plays a large role in changing the // behavior of the "FindPending" routines to keep from looking outside this scope. DocumentNode dn = new DocumentNode(DocumentNodeType.dnShape); formatState.SetParaDefaults(); formatState.SetCharDefaults(); dn.FormatState = new FormatState(formatState); dna.Push(dn); } break; case RtfControlWord.Ctrl_SHPPICT: // If this occurs in listtext context, mark listtext as non-empty. int ndnListText = dna.FindPending(DocumentNodeType.dnListText); if (ndnListText >= 0) { DocumentNode dnListText = dna.EntryAt(ndnListText); dnListText.HasMarkerContent = true; } // Keep the rtf destination as the list picture to skip the list picture if (fsOld.RtfDestination == RtfDestination.DestListPicture) { formatState.RtfDestination = RtfDestination.DestListPicture; } else { formatState.RtfDestination = RtfDestination.DestShapePicture; } break; case RtfControlWord.Ctrl_NONSHPPICT: formatState.RtfDestination = RtfDestination.DestNoneShapePicture; break; } } internal void HandleOldListTokens(RtfToken token, FormatState formatState) { FormatState fsCur = _converterState.PreviousTopFormatState(0); FormatState fsOld = _converterState.PreviousTopFormatState(1); if (fsCur == null || fsOld == null) { return; } // If we're in the PN destination, we push marker setting into the previous format state. if (formatState.RtfDestination == RtfDestination.DestPN) { formatState = fsOld; } switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_PNLVL: formatState.PNLVL = token.Parameter; break; case RtfControlWord.Ctrl_PNLVLBLT: formatState.Marker = MarkerStyle.MarkerBullet; formatState.IsContinue = false; break; case RtfControlWord.Ctrl_PNLVLBODY: formatState.Marker = MarkerStyle.MarkerArabic; formatState.IsContinue = false; break; case RtfControlWord.Ctrl_PNLVLCONT: formatState.IsContinue = true; break; case RtfControlWord.Ctrl_PNCARD: formatState.Marker = MarkerStyle.MarkerCardinal; break; case RtfControlWord.Ctrl_PNDEC: formatState.Marker = MarkerStyle.MarkerArabic; break; case RtfControlWord.Ctrl_PNUCLTR: formatState.Marker = MarkerStyle.MarkerUpperAlpha; break; case RtfControlWord.Ctrl_PNUCRM: formatState.Marker = MarkerStyle.MarkerUpperRoman; break; case RtfControlWord.Ctrl_PNLCLTR: formatState.Marker = MarkerStyle.MarkerLowerAlpha; break; case RtfControlWord.Ctrl_PNLCRM: formatState.Marker = MarkerStyle.MarkerLowerRoman; break; case RtfControlWord.Ctrl_PNORD: formatState.Marker = MarkerStyle.MarkerOrdinal; break; case RtfControlWord.Ctrl_PNORDT: formatState.Marker = MarkerStyle.MarkerOrdinal; break; case RtfControlWord.Ctrl_PNBIDIA: formatState.Marker = MarkerStyle.MarkerArabic; break; case RtfControlWord.Ctrl_PNBIDIB: formatState.Marker = MarkerStyle.MarkerArabic; break; case RtfControlWord.Ctrl_PN: formatState.RtfDestination = RtfDestination.DestPN; fsOld.Marker = MarkerStyle.MarkerBullet; break; case RtfControlWord.Ctrl_PNTXTA: // Leave with unknown destination so text is tossed. break; case RtfControlWord.Ctrl_PNTXTB: // Leave with unknown destination so text is tossed. break; case RtfControlWord.Ctrl_PNTEXT: if (fsOld.IsContentDestination || formatState.IsHidden) { fsCur.RtfDestination = RtfDestination.DestListText; DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dnl = new DocumentNode(DocumentNodeType.dnListText); dnl.FormatState = new FormatState(formatState); dna.Push(dnl); } break; case RtfControlWord.Ctrl_PNSTART: formatState.StartIndex = token.Parameter; break; default: formatState.Marker = MarkerStyle.MarkerBullet; break; } } internal void HandleTableProperties(RtfToken token, FormatState formatState) { if (!formatState.IsContentDestination) { return; } CellFormat cf = null; switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_TRGAPH: break; case RtfControlWord.Ctrl_TRLEFT: formatState.RowFormat.Trleft = token.Parameter; break; case RtfControlWord.Ctrl_TRQC: // Specifies overall alignment of the table row - ignore for now. break; case RtfControlWord.Ctrl_TRQL: // Specifies overall alignment of the table row - ignore for now. break; case RtfControlWord.Ctrl_TRQR: // Specifies overall alignment of the table row - ignore for now. break; case RtfControlWord.Ctrl_TRPADDL: formatState.RowFormat.RowCellFormat.PaddingLeft = token.Parameter; break; case RtfControlWord.Ctrl_TRPADDR: formatState.RowFormat.RowCellFormat.PaddingRight = token.Parameter; break; case RtfControlWord.Ctrl_TRPADDB: formatState.RowFormat.RowCellFormat.PaddingBottom = token.Parameter; break; case RtfControlWord.Ctrl_TRPADDT: formatState.RowFormat.RowCellFormat.PaddingTop = token.Parameter; break; case RtfControlWord.Ctrl_TRPADDFL: // zero value indicates ignore trpaddl, three means treat it as twips break; case RtfControlWord.Ctrl_TRPADDFT: // zero value indicates ignore trpaddt, three means treat it as twips break; case RtfControlWord.Ctrl_TRPADDFB: // zero value indicates ignore trpaddb, three means treat it as twips break; case RtfControlWord.Ctrl_TRPADDFR: // zero value indicates ignore trpaddr, three means treat it as twips break; case RtfControlWord.Ctrl_TRSPDFB: if (token.Parameter == 0) formatState.RowFormat.RowCellFormat.SpacingBottom = 0; break; case RtfControlWord.Ctrl_TRSPDFL: if (token.Parameter == 0) formatState.RowFormat.RowCellFormat.SpacingLeft = 0; break; case RtfControlWord.Ctrl_TRSPDFR: if (token.Parameter == 0) formatState.RowFormat.RowCellFormat.SpacingRight = 0; break; case RtfControlWord.Ctrl_TRSPDFT: if (token.Parameter == 0) formatState.RowFormat.RowCellFormat.SpacingTop = 0; break; case RtfControlWord.Ctrl_TRSPDB: formatState.RowFormat.RowCellFormat.SpacingBottom = token.Parameter; break; case RtfControlWord.Ctrl_TRSPDL: formatState.RowFormat.RowCellFormat.SpacingLeft = token.Parameter; break; case RtfControlWord.Ctrl_TRSPDR: formatState.RowFormat.RowCellFormat.SpacingRight = token.Parameter; break; case RtfControlWord.Ctrl_TRSPDT: formatState.RowFormat.RowCellFormat.SpacingTop = token.Parameter; break; case RtfControlWord.Ctrl_TRWWIDTH: // Row (table) width formatState.RowFormat.WidthRow.Value = token.Parameter; break; case RtfControlWord.Ctrl_TRFTSWIDTH: // Units for WWIDTH (0 - ignore, 1 - auto, 2 - 50ths of a percent, 3 - twips) if (Validators.IsValidWidthType(token.Parameter)) formatState.RowFormat.WidthRow.Type = (WidthType)token.Parameter; break; case RtfControlWord.Ctrl_TRWWIDTHB: // Space before row width break; case RtfControlWord.Ctrl_TRFTSWIDTHB: break; case RtfControlWord.Ctrl_TRWWIDTHA: // Space after row width formatState.RowFormat.WidthA.Value = token.Parameter; break; case RtfControlWord.Ctrl_TRFTSWIDTHA: if (Validators.IsValidWidthType(token.Parameter)) formatState.RowFormat.WidthA.Type = (WidthType)token.Parameter; break; case RtfControlWord.Ctrl_TRAUTOFIT: if (token.ToggleValue > 0) formatState.RowFormat.WidthRow.SetDefaults(); break; case RtfControlWord.Ctrl_CLWWIDTH: cf = formatState.RowFormat.CurrentCellFormat(); cf.Width.Value = token.Parameter; break; case RtfControlWord.Ctrl_CLFTSWIDTH: cf = formatState.RowFormat.CurrentCellFormat(); if (Validators.IsValidWidthType(token.Parameter)) cf.Width.Type = (WidthType)token.Parameter; break; case RtfControlWord.Ctrl_TRBRDRT: ConverterState.CurrentBorder = formatState.RowFormat.RowCellFormat.BorderTop; break; case RtfControlWord.Ctrl_TRBRDRB: ConverterState.CurrentBorder = formatState.RowFormat.RowCellFormat.BorderBottom; break; case RtfControlWord.Ctrl_TRBRDRR: ConverterState.CurrentBorder = formatState.RowFormat.RowCellFormat.BorderRight; break; case RtfControlWord.Ctrl_TRBRDRL: ConverterState.CurrentBorder = formatState.RowFormat.RowCellFormat.BorderLeft; break; case RtfControlWord.Ctrl_TRBRDRV: ConverterState.CurrentBorder = formatState.RowFormat.RowCellFormat.BorderLeft; break; case RtfControlWord.Ctrl_TRBRDRH: ConverterState.CurrentBorder = formatState.RowFormat.RowCellFormat.BorderTop; break; case RtfControlWord.Ctrl_CLVERTALT: cf = formatState.RowFormat.CurrentCellFormat(); cf.VAlign = VAlign.AlignTop; break; case RtfControlWord.Ctrl_CLVERTALB: cf = formatState.RowFormat.CurrentCellFormat(); cf.VAlign = VAlign.AlignBottom; break; case RtfControlWord.Ctrl_CLVERTALC: cf = formatState.RowFormat.CurrentCellFormat(); cf.VAlign = VAlign.AlignCenter; break; case RtfControlWord.Ctrl_CLSHDNG: // Cell shading in 100's of a percent cf = formatState.RowFormat.CurrentCellFormat(); cf.Shading = token.Parameter; break; case RtfControlWord.Ctrl_CLSHDRAWNIL: // No cell shading - clear color for now cf = formatState.RowFormat.CurrentCellFormat(); cf.Shading = -1; cf.CB = -1; cf.CF = -1; break; case RtfControlWord.Ctrl_CLBRDRB: cf = formatState.RowFormat.CurrentCellFormat(); ConverterState.CurrentBorder = cf.BorderBottom; break; case RtfControlWord.Ctrl_CLBRDRR: cf = formatState.RowFormat.CurrentCellFormat(); ConverterState.CurrentBorder = cf.BorderRight; break; case RtfControlWord.Ctrl_CLBRDRT: cf = formatState.RowFormat.CurrentCellFormat(); ConverterState.CurrentBorder = cf.BorderTop; break; case RtfControlWord.Ctrl_CLBRDRL: cf = formatState.RowFormat.CurrentCellFormat(); ConverterState.CurrentBorder = cf.BorderLeft; break; case RtfControlWord.Ctrl_CLCBPAT: cf = formatState.RowFormat.CurrentCellFormat(); cf.CB = token.Parameter; break; case RtfControlWord.Ctrl_CLCFPAT: cf = formatState.RowFormat.CurrentCellFormat(); cf.CF = token.Parameter; break; case RtfControlWord.Ctrl_CLPADL: cf = formatState.RowFormat.CurrentCellFormat(); cf.PaddingLeft = token.Parameter; break; case RtfControlWord.Ctrl_CLPADR: cf = formatState.RowFormat.CurrentCellFormat(); cf.PaddingRight = token.Parameter; break; case RtfControlWord.Ctrl_CLPADB: cf = formatState.RowFormat.CurrentCellFormat(); cf.PaddingBottom = token.Parameter; break; case RtfControlWord.Ctrl_CLPADT: cf = formatState.RowFormat.CurrentCellFormat(); cf.PaddingTop = token.Parameter; break; case RtfControlWord.Ctrl_CLPADFL: // zero value indicates ignore clpadl, three means treat it as twips break; case RtfControlWord.Ctrl_CLPADFT: // zero value indicates ignore clpadt, three means treat it as twips break; case RtfControlWord.Ctrl_CLPADFB: // zero value indicates ignore clpadb, three means treat it as twips break; case RtfControlWord.Ctrl_CLPADFR: // zero value indicates ignore clpadr, three means treat it as twips break; case RtfControlWord.Ctrl_CELLX: cf = formatState.RowFormat.CurrentCellFormat(); cf.CellX = token.Parameter; cf.IsPending = false; break; case RtfControlWord.Ctrl_RTLROW: formatState.RowFormat.Dir = DirState.DirRTL; break; case RtfControlWord.Ctrl_LTRROW: formatState.RowFormat.Dir = DirState.DirLTR; break; // Cell merging case RtfControlWord.Ctrl_CLMGF: // First cell in range of table cells to be merged. cf = formatState.RowFormat.CurrentCellFormat(); cf.IsHMergeFirst = true; break; case RtfControlWord.Ctrl_CLMRG: // Contents of this cell are merged with those of the preceding cell. cf = formatState.RowFormat.CurrentCellFormat(); cf.IsHMerge = true; break; case RtfControlWord.Ctrl_CLVMGF: // First cell in range of cells to be vertically merged. cf = formatState.RowFormat.CurrentCellFormat(); cf.IsVMergeFirst = true; break; case RtfControlWord.Ctrl_CLVMRG: // Contents of this cell are vertically merged with those of the preceding cell. cf = formatState.RowFormat.CurrentCellFormat(); cf.IsVMerge = true; break; // General borders, not just tables case RtfControlWord.Ctrl_BRDRL: // Left paragraph border ConverterState.CurrentBorder = formatState.ParaBorder.BorderLeft; break; case RtfControlWord.Ctrl_BRDRR: // Right paragraph border ConverterState.CurrentBorder = formatState.ParaBorder.BorderRight; break; case RtfControlWord.Ctrl_BRDRT: // Top paragraph border ConverterState.CurrentBorder = formatState.ParaBorder.BorderTop; break; case RtfControlWord.Ctrl_BRDRB: // Bottom paragraph border ConverterState.CurrentBorder = formatState.ParaBorder.BorderBottom; break; case RtfControlWord.Ctrl_BOX: // All four borders ConverterState.CurrentBorder = formatState.ParaBorder.BorderAll; break; case RtfControlWord.Ctrl_BRDRNIL: // No borders ConverterState.CurrentBorder = null; break; case RtfControlWord.Ctrl_BRSP: // Space in twips between borders and paragraph formatState.ParaBorder.Spacing = token.Parameter; break; case RtfControlWord.Ctrl_BRDRTBL: // No cell borders if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderNone; } break; case RtfControlWord.Ctrl_BRDRART: // Art border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRBAR: // Border on outside edge of page (treat as BRDRL for XAML) break; case RtfControlWord.Ctrl_BRDRBTW: break; case RtfControlWord.Ctrl_BRDRCF: if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.CF = token.Parameter; } break; case RtfControlWord.Ctrl_BRDRDASH: // Dashed border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRDASHD: // Dash dot border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRDASHDD: // Dot dot dash border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRDASHDOTSTR: // Dash-dot border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRDASHSM: // Small dash border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRDB: // Double border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderDouble; } break; case RtfControlWord.Ctrl_BRDRDOT: // Dotted border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDREMBOSS: // Emboss-style border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRENGRAVE: // Engrave-style border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRFRAME: // Frame-style border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRHAIR: // Hairline border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRINSET: // Inset border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDROUTSET: // Outset border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRS: if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRSH: // Shadow border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTH: if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderDouble; } break; case RtfControlWord.Ctrl_BRDRTHTNLG: // Thick-thin (large) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTHTNMG: // Thick-thin (medium) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTHTNSG: // Thick-thin-thin (thin) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTNTHLG: // Thin-thick (large) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTNTHMG: // Thick-thin-thin (medium) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTNTHSG: // Thick-thin-thin (small) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTNTHTNLG: // Thick-thin-thin (large) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTNTHTNMG: // Thin-thick-thin (medium) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTNTHTNSG: // Thick-thin-thin (small) border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRTRIPLE: // Triple border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRW: // Border thickness if (ConverterState.CurrentBorder != null) { // Note that propset does validation ConverterState.CurrentBorder.Width = token.Parameter; } break; case RtfControlWord.Ctrl_BRDRNONE: // No borders if (ConverterState.CurrentBorder != null) { // Note that propset does validation ConverterState.CurrentBorder.SetDefaults(); } break; case RtfControlWord.Ctrl_BRDRWAVY: // Wavy border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderSingle; } break; case RtfControlWord.Ctrl_BRDRWAVYDB: // Double border if (ConverterState.CurrentBorder != null) { ConverterState.CurrentBorder.Type = BorderType.BorderDouble; } break; } } internal void HandleFieldTokens(RtfToken token, FormatState formatState) { // Don't start processing fields in non-normal destinatations FormatState fsCur = _converterState.PreviousTopFormatState(0); FormatState fsOld = _converterState.PreviousTopFormatState(1); if (fsCur == null || fsOld == null) { return; } switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_FIELD: // Process fields in normal content or nested fields if (!fsOld.IsContentDestination || formatState.IsHidden) { return; } formatState.RtfDestination = RtfDestination.DestField; break; case RtfControlWord.Ctrl_FLDRSLT: if (fsOld.RtfDestination != RtfDestination.DestField) { return; } formatState.RtfDestination = RtfDestination.DestFieldResult; break; case RtfControlWord.Ctrl_FLDPRIV: if (fsOld.RtfDestination != RtfDestination.DestField) { return; } formatState.RtfDestination = RtfDestination.DestFieldPrivate; break; case RtfControlWord.Ctrl_FLDINST: if (fsOld.RtfDestination != RtfDestination.DestField) { return; } formatState.RtfDestination = RtfDestination.DestFieldInstruction; break; default: return; } DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dnf = new DocumentNode(DocumentNodeType.dnFieldBegin); dnf.FormatState = new FormatState(formatState); dnf.IsPending = false; // Field start mark should not impact other tags open/close behavior dnf.IsTerminated = true; dna.Push(dnf); } internal void HandleTableNesting(FormatState formatState) { DocumentNodeArray dna = _converterState.DocumentNodeArray; // If we're in a throw-away destination, just return. if (!formatState.IsContentDestination || formatState.IsHidden) { return; } // Make sure proper number of tables are open to reflect this paragraphs nest level int nTables = dna.CountOpenNodes(DocumentNodeType.dnTable); int nLevel = (int)formatState.TableLevel; // If we're not in a table, end early if (nTables == nLevel && nTables == 0) { return; } if (nTables > nLevel) { DocumentNode dnPara = dna.Pop(); bool bInField = dna.FindUnmatched(DocumentNodeType.dnFieldBegin) >= 0; while (nTables > nLevel) { int nOpen = dna.FindPending(DocumentNodeType.dnTable); if (nOpen >= 0) { dna.CloseAt(nOpen); if (!bInField) { dna.CoalesceChildren(_converterState, nOpen); } } nTables--; } dna.Push(dnPara); } else { // Before opening the table, let's close any open lists. Word (RTF) allows somewhat // arbitrary interleaving (because there's no explicit nesting), but when converting to // XAML we have to choose an explicit nesting. We never create a table *inside* a list, so // let's just terminate any open lists right now. if (nTables < nLevel) { int nListAt = dna.FindPending(DocumentNodeType.dnList); if (nListAt >= 0) { // I want the currently pending paragraph to be part of the table, not part of the list // I'm going to close. So I temporarily pop it off while closing off the list and then // push it back on before inserting the table(s). DocumentNode dnPara = dna.Pop(); while (nListAt >= 0) { dna.CloseAt(nListAt); nListAt = dna.FindPending(DocumentNodeType.dnList); } dna.Push(dnPara); } } // Ensure sufficient tables are open - this may be our first indication // Insert the table nodes right before the current paragraph. Debug.Assert(dna.Count > 0 && dna.EntryAt(dna.Count - 1).Type == DocumentNodeType.dnParagraph); int nInsertAt = dna.Count - 1; // Ensure row is open int nTable = dna.FindPending(DocumentNodeType.dnTable); if (nTable >= 0) { int nRow = dna.FindPending(DocumentNodeType.dnRow, nTable); if (nRow == -1) { DocumentNode dnRow = new DocumentNode(DocumentNodeType.dnRow); dna.InsertNode(nInsertAt++, dnRow); nRow = nInsertAt - 1; } int nCell = dna.FindPending(DocumentNodeType.dnCell, nRow); if (nCell == -1) { DocumentNode dnCell = new DocumentNode(DocumentNodeType.dnCell); dna.InsertNode(nInsertAt, dnCell); } } nInsertAt = dna.Count - 1; while (nTables < nLevel) { DocumentNode dnTable = new DocumentNode(DocumentNodeType.dnTable); DocumentNode dnTableBody = new DocumentNode(DocumentNodeType.dnTableBody); DocumentNode dnRow = new DocumentNode(DocumentNodeType.dnRow); DocumentNode dnCell = new DocumentNode(DocumentNodeType.dnCell); dna.InsertNode(nInsertAt, dnCell); dna.InsertNode(nInsertAt, dnRow); dna.InsertNode(nInsertAt, dnTableBody); dna.InsertNode(nInsertAt, dnTable); nTables++; } } dna.AssertTreeSemanticInvariants(); } internal MarkerList GetMarkerStylesOfParagraph(MarkerList mlHave, FormatState fs, bool bMarkerPresent) { MarkerList mlWant = new MarkerList(); long nVirtualListLevel = fs.ListLevel; long nStartIndexOverride = -1; // No list? if (nVirtualListLevel < 1) { return mlWant; } // Use currently open list styles for all levels below requested one for (int i = 0; i < mlHave.Count; i++) if (mlHave.EntryAt(i).VirtualListLevel < nVirtualListLevel || fs.IsContinue) { MarkerListEntry mle = mlHave.EntryAt(i); mlWant.AddEntry(mle.Marker, mle.ILS, -1, mle.StartIndexDefault, mle.VirtualListLevel); } else { break; } // If I'm a continuation paragraph, I'm done. if (fs.IsContinue) { return mlWant; } // Now determine the list style for the list level I'm going to add. ListOverrideTable lot = _converterState.ListOverrideTable; ListOverride lo = lot.FindEntry((int)fs.ILS); if (lo != null) { ListLevelTable levels = lo.Levels; if (levels == null || levels.Count == 0) { ListTableEntry lte = _converterState.ListTable.FindEntry(lo.ID); if (lte != null) { levels = lte.Levels; } // Did the list override specify a start index? if (lo.StartIndex > 0) { nStartIndexOverride = lo.StartIndex; } } if (levels != null) { ListLevel listLevel = levels.EntryAt((int)nVirtualListLevel - 1); if (listLevel != null) { // If there was a marker present, we ignore the "Hidden" style in the list table. MarkerStyle ms = listLevel.Marker; if (ms == MarkerStyle.MarkerHidden && bMarkerPresent) { ms = MarkerStyle.MarkerBullet; } mlWant.AddEntry(ms, fs.ILS, nStartIndexOverride, listLevel.StartIndex, nVirtualListLevel); return mlWant; } } } // If there wasn't a list definition, use the marker type in the formatstate. mlWant.AddEntry(fs.Marker, fs.ILS, nStartIndexOverride, fs.StartIndex, nVirtualListLevel); return mlWant; } internal void HandleListNesting(FormatState formatState) { DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dnPara = dna.EntryAt(dna.Count - 1); bool bMarkerPresent = _converterState.IsMarkerPresent; // Test if we encountered list text if (_converterState.IsMarkerPresent) { _converterState.IsMarkerPresent = false; } // If we're in a throw-away destination, just return. if (!formatState.IsContentDestination || formatState.IsHidden) { return; } // Treat no marker text present as a continuation paragraph if (!bMarkerPresent && formatState.ListLevel > 0) { // Allocate a new one here so that this change doesn't propagate beyond here. formatState = new FormatState(formatState); // If the only thing making this look like a list is the ILVL property, just clear it. if (formatState.ILVL > 0 && formatState.ILS < 0) { formatState.ILVL = 0; } else // otherwise treat this as a continuation paragraph. { formatState.IsContinue = true; } } // Make sure proper number of lists are open to reflect this paragraphs nest level MarkerList mlHave = dna.GetOpenMarkerStyles(); MarkerList mlWant = GetMarkerStylesOfParagraph(mlHave, formatState, bMarkerPresent); int nLists = mlHave.Count; int nLevel = mlWant.Count; // If we're not in a list end early if (nLists == nLevel && nLists == 0) { return; } // If we're not in a list and marked as a continuation, ignore this - anomaly. if (nLists == 0 && nLevel == 1 && formatState.IsContinue) { return; } // Propagate noticing that the specified text was empty. if (_converterState.IsMarkerWhiteSpace) { _converterState.IsMarkerWhiteSpace = false; if (nLevel > 0) { MarkerListEntry entry = mlWant.EntryAt(nLevel - 1); entry.Marker = MarkerStyle.MarkerHidden; } } // The ones we have are only "good" if the styles match what we want. int nMatch = GetMatchedMarkList(formatState, mlHave, mlWant); // If none match, we might do better by extending some previously open list. if (nMatch == 0) { MarkerList mlCouldHave = dna.GetLastMarkerStyles(mlHave, mlWant); MarkerList mlCouldWant = GetMarkerStylesOfParagraph(mlCouldHave, formatState, bMarkerPresent); nMatch = GetMatchedMarkList(formatState, mlCouldHave, mlCouldWant); // If I would re-open a previous list but close some set of them and then reopen another, // this is unlikely to be what the user intended. Instead, don't extend the previous list. // See Windows OS Bugs: 1373731. if (nMatch < mlCouldHave.Count && mlCouldWant.Count > nMatch) { nMatch = 0; } if (nMatch > 0) { mlHave = mlCouldHave; mlWant = mlCouldWant; dna.OpenLastList(); } } // Ensure list and listitem EnsureListAndListItem(formatState, dna, mlHave, mlWant, nMatch); // To get better results in XAML output, clear the FI for the first para in a list item. if (dna.Count > 1 && dna.EntryAt(dna.Count - 2).Type == DocumentNodeType.dnListItem) { Debug.Assert(!dnPara.IsTerminated); dnPara.FormatState.FI = 0; } dna.AssertTreeSemanticInvariants(); } internal void HandleCodePageTokens(RtfToken token, FormatState formatState) { switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_ANSI: // ANSI apparently means specifically 1252, not ACP. That makes a lot more sense... //_converterState.CodePage = CultureInfo.CurrentCulture.TextInfo.ANSICodePage; _converterState.CodePage = 1252; _lexer.CodePage = _converterState.CodePage; break; case RtfControlWord.Ctrl_MAC: _converterState.CodePage = 10000; _lexer.CodePage = _converterState.CodePage; break; case RtfControlWord.Ctrl_PC: _converterState.CodePage = 437; _lexer.CodePage = _converterState.CodePage; break; case RtfControlWord.Ctrl_PCA: _converterState.CodePage = 850; _lexer.CodePage = _converterState.CodePage; break; case RtfControlWord.Ctrl_UPR: // We discard this ansi representation - \ud will then switch back to current. formatState.RtfDestination = RtfDestination.DestUPR; break; case RtfControlWord.Ctrl_U: { char[] unicodeChar = new char[1]; unicodeChar[0] = (char)token.Parameter; ProcessText(new string(unicodeChar)); } break; case RtfControlWord.Ctrl_UD: { // We are parsing: {\upr ansi stuff{\*\ud unicode stuff }} // When we encountered the UPR we set state to a throwaway destination (DestUPR). // The nested group pushed a new format state but that now has DestUnknown because of this. // Now that we encountered the \ud destination, lets push back the original destination. FormatState previous = _converterState.PreviousTopFormatState(1); FormatState previousPrevious = _converterState.PreviousTopFormatState(2); if (previous != null && previousPrevious != null) { if (formatState.RtfDestination == RtfDestination.DestUPR && previous.RtfDestination == RtfDestination.DestUnknown) { formatState.RtfDestination = previousPrevious.RtfDestination; } } } break; case RtfControlWord.Ctrl_UC: formatState.UnicodeSkip = (int)token.Parameter; break; } } internal void ProcessFieldText(RtfToken token) { switch (_converterState.TopFormatState.RtfDestination) { case RtfDestination.DestField: break; case RtfDestination.DestFieldInstruction: // Gather up for later processing HandleNormalText(token.Text, _converterState.TopFormatState); break; case RtfDestination.DestFieldPrivate: // Discard break; case RtfDestination.DestFieldResult: HandleNormalText(token.Text, _converterState.TopFormatState); break; } } internal void ProcessFontTableText(RtfToken token) { string tokenName = token.Text; // Strip line endings tokenName = tokenName.Replace("\r\n", ""); // Strip trailing semi-colon tokenName = tokenName.Replace(";", ""); FontTableEntry entry = _converterState.FontTable.CurrentEntry; if (entry != null && tokenName.Length > 0 && !entry.IsNameSealed) { // If name not yet specified, just set it if (entry.Name == null) { entry.Name = tokenName; } else // Otherwise, append it { entry.Name += tokenName; } } } internal void HandleFontTableTokens(RtfToken token) { FontTableEntry entry = _converterState.FontTable.CurrentEntry; FormatState formatState = _converterState.TopFormatState; if (entry != null) { switch (token.RtfControlWordInfo.Control) { case RtfControlWord.Ctrl_FCHARSET: // Set the codepage to the font table entry entry.CodePageFromCharSet = (int)token.Parameter; // Also set lexer code page if (entry.CodePage == -1) { formatState.CodePage = _converterState.CodePage; } else { formatState.CodePage = entry.CodePage; } _lexer.CodePage = formatState.CodePage; break; } } } internal void ProcessColorTableText(RtfToken token) { // This is just a separator for color table entries _converterState.ColorTable.FinishColor(); } internal void ProcessText(string text) { FormatState fs = _converterState.TopFormatState; if (fs.IsContentDestination && !fs.IsHidden && text != string.Empty) { HandleNormalTextRaw(text, fs); } } internal void HandleNormalText(string text, FormatState formatState) { // Normal CRLF's are eaten by the RTF lexer. Any ones that have slipped through here // were either escaped or hex-encoded and should be treated as a linebreak. int nStart = 0; while (nStart < text.Length) { int nEnd = nStart; while (nEnd < text.Length) { if (text[nEnd] == 0x0d || text[nEnd] == 0x0a) { break; } nEnd++; } // Handle text before newline if (nStart == 0 && nEnd == text.Length) { HandleNormalTextRaw(text, formatState); } else if (nEnd > nStart) { string subtext = text.Substring(nStart, nEnd - nStart); HandleNormalTextRaw(subtext, formatState); } // Handle newlines while (nEnd < text.Length && (text[nEnd] == 0x0d || text[nEnd] == 0x0a)) { ProcessNormalHardLine(formatState); if (nEnd + 1 < text.Length && text[nEnd] == 0x0d && text[nEnd] == 0x0a) { nEnd += 2; } else { nEnd += 1; } } nStart = nEnd; } } internal void HandleNormalTextRaw(string text, FormatState formatState) { DocumentNodeArray dna = _converterState.DocumentNodeArray; DocumentNode dnTop = dna.Top; // See if I can just append the text content if the format is the same. if (dnTop != null && (dnTop.Type == DocumentNodeType.dnText)) { // If the format is not equal, close this text element and we'll open a new one. if (!dnTop.FormatState.IsEqual(formatState)) { dna.CloseAt(dna.Count - 1); dnTop = null; } } // OK, create a text node if necessary if (dnTop == null || dnTop.Type != DocumentNodeType.dnText) { dnTop = new DocumentNode(DocumentNodeType.dnText); dnTop.FormatState = new FormatState(formatState); dna.Push(dnTop); } Debug.Assert(!dnTop.IsTerminated); dnTop.AppendXamlEncoded(text); dnTop.IsPending = false; } internal void ProcessNormalHardLine(FormatState formatState) { // Close out pending text nodes DocumentNodeArray dna = _converterState.DocumentNodeArray; if (dna.TestTop(DocumentNodeType.dnText)) { dna.CloseAt(dna.Count - 1); } DocumentNode documentNode = new DocumentNode(DocumentNodeType.dnLineBreak); documentNode.FormatState = new FormatState(formatState); dna.Push(documentNode); dna.CloseAt(dna.Count - 1); dna.CoalesceChildren(_converterState, dna.Count - 1); } internal void ProcessHardLine(RtfToken token, FormatState formatState) { switch (_converterState.TopFormatState.RtfDestination) { case RtfDestination.DestNormal: case RtfDestination.DestFieldResult: case RtfDestination.DestShapeResult: case RtfDestination.DestListText: ProcessNormalHardLine(formatState); break; case RtfDestination.DestFontTable: case RtfDestination.DestFontName: break; case RtfDestination.DestColorTable: break; case RtfDestination.DestField: break; case RtfDestination.DestFieldInstruction: case RtfDestination.DestFieldPrivate: ProcessNormalHardLine(formatState); break; } } #endregion Internal Methods //----------------------------------------------------- // // Private Methods // //------------------------------------------------------ #region Private Methods private void SetTokenTextWithControlCharacter(RtfToken token) { switch (token.Text[0]) { case '~': // NBSP token.Text = new string('\xA0', 1); // Unicode NBSP break; case '-': // Optional hypen (not really in input) token.Text = string.Empty; break; case ':': // Sub-entry in index - leave as literal break; case '_': // Non-breaking hypen - convert to real hypen token.Text = new string('\x2011', 1); break; case '|': // Formula character - leave as literal (or toss?) break; // Escaped lexically special RTF characters - leave as literal text case '\\': case '{': case '}': break; } } private int GetMatchedMarkList(FormatState formatState, MarkerList mlHave, MarkerList mlWant) { // The ones we have are only "good" if the styles match what we want. int nMatch = 0; for (; nMatch < mlHave.Count && nMatch < mlWant.Count; nMatch++) { if (!formatState.IsContinue) { MarkerListEntry eHave = mlHave.EntryAt(nMatch); MarkerListEntry eWant = mlWant.EntryAt(nMatch); if (eHave.Marker != eWant.Marker || eHave.ILS != eWant.ILS || eHave.StartIndexDefault != eWant.StartIndexDefault || eWant.StartIndexOverride >= 0) { break; } } } return nMatch; } private void EnsureListAndListItem(FormatState formatState, DocumentNodeArray dna, MarkerList mlHave, MarkerList mlWant, int nMatch) { int nInsertAt; bool added = false; int nLists = mlHave.Count; int nLevel = mlWant.Count; // Close any open lists that don't match the ones we want. bool bInField = dna.FindUnmatched(DocumentNodeType.dnFieldBegin) >= 0; if (nLists > nMatch) { DocumentNode documentNodePara = dna.Pop(); while (nLists > nMatch) { int nOpen = dna.FindPending(DocumentNodeType.dnList); if (nOpen >= 0) { dna.CloseAt(nOpen); // Only coalesce if this is a top-level list. Otherwise I want to get // the full structure to use for margin fixups so I delay coalescing. // No, don't coalesce since a later list may need to get merged with this one. // if (!bInField && dna.FindPending(DocumentNodeType.dnList) < 0) // dna.CoalesceChildren(_converterState, nOpen); } nLists--; mlHave.RemoveRange(mlHave.Count - 1, 1); } dna.Push(documentNodePara); } if (nLists < nLevel) { // Multiple immediately nested lists are handled poorly in Avalon and are usually an indication // of bad input from Word (or some other word processor). Clip the number of lists we'll create here. if (nLevel != nLists + 1) { // I'm going to truncate, but make the list I create here of the specific type at this level. if (nLevel <= mlWant.Count) { mlWant[nLists] = mlWant[mlWant.Count - 1]; } nLevel = nLists + 1; } // Ensure sufficient lists are open - this may be our first indication // Insert the list nodes right before the current paragraph nInsertAt = dna.Count - 1; while (nLists < nLevel) { added = true; DocumentNode dnList = new DocumentNode(DocumentNodeType.dnList); DocumentNode dnLI = new DocumentNode(DocumentNodeType.dnListItem); dna.InsertNode(nInsertAt, dnLI); dna.InsertNode(nInsertAt, dnList); // Set the list properties MarkerListEntry mle = mlWant.EntryAt(nLists); dnList.FormatState.Marker = mle.Marker; dnList.FormatState.StartIndex = mle.StartIndexToUse; dnList.FormatState.StartIndexDefault = mle.StartIndexDefault; dnList.VirtualListLevel = mle.VirtualListLevel; dnList.FormatState.ILS = mle.ILS; nLists++; } } // Ensure listitem is open nInsertAt = dna.Count - 1; int nList = dna.FindPending(DocumentNodeType.dnList); if (nList >= 0) { int nLI = dna.FindPending(DocumentNodeType.dnListItem, nList); if (nLI >= 0 && !added && !formatState.IsContinue) { DocumentNode documentNodePara = dna.Pop(); dna.CloseAt(nLI); // Don't coalesce - I may need to do margin fixup. // dna.CoalesceChildren(_converterState, nLI); dna.Push(documentNodePara); nLI = -1; nInsertAt = dna.Count - 1; } if (nLI == -1) { DocumentNode dnLI = new DocumentNode(DocumentNodeType.dnListItem); dna.InsertNode(nInsertAt, dnLI); } } } #endregion Private Methods //------------------------------------------------------ // // Private Enum // //----------------------------------------------------- #region Private Enum private enum EncodeType { Ansi, Unicode, ShiftJis } #endregion Private Enum //------------------------------------------------------ // // Private Fields // //----------------------------------------------------- #region Private Fields private byte[] _rtfBytes; private StringBuilder _outerXamlBuilder; private RtfToXamlLexer _lexer; private ConverterState _converterState; private bool _bForceParagraph; // WpfPayload package that containing the image for the specified Xaml private WpfPayload _wpfPayload; // Rtf image count that is the unique image id which is on WpfPayload private int _imageCount; #endregion Private Fields //----------------------------------------------------- // // Private Const // //----------------------------------------------------- #region Private Const private const int MAX_GROUP_DEPTH = 32; #endregion Private Const } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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