SrgsNameValueTag.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / Recognition / SrgsGrammar / SrgsNameValueTag.cs / 1 / SrgsNameValueTag.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: 
//
// History: 
//		5/1/2004	[....]		Created from the Kurosawa Code
//---------------------------------------------------------------------------
using System;
using System.Diagnostics; 
using System.Globalization;
using System.Speech.Internal; 
using System.Speech.Internal.SrgsParser; 
using System.Text;
using System.Xml; 

#pragma warning disable 1634, 1691 // Allows suppression of certain PreSharp messages.

namespace System.Speech.Recognition.SrgsGrammar 
{
    /// TODOC <_include file='doc\PropertyTag.uex' path='docs/doc[@for="PropertyTag"]/*' /> 
    [Serializable] 
    [DebuggerDisplay ("{DebuggerDisplayString ()}")]
    public class SrgsNameValueTag : SrgsElement, IPropertyTag 
    {
        //*******************************************************************
        //
        // Constructors 
        //
        //******************************************************************* 
 
        #region Constructors
 
        /// TODOC <_include file='doc\PropertyTag.uex' path='docs/doc[@for="PropertyTag.PropertyTag2"]/*' />
        public SrgsNameValueTag ()
        {
        } 

        /// TODOC <_include file='doc\PropertyTag.uex' path='docs/doc[@for="PropertyTag.PropertyTag2"]/*' /> 
        public SrgsNameValueTag (object value) 
        {
            Helpers.ThrowIfNull (value, "value"); 

            Value = value;
        }
 
        /// TODOC <_include file='doc\PropertyTag.uex' path='docs/doc[@for="PropertyTag.PropertyTag3"]/*' />
        public SrgsNameValueTag (string name, object value) 
            : this (value) 
        {
            _name = GetTrimmedName (name, "name"); 
        }

        #endregion
 
        //********************************************************************
        // 
        // Public Properties 
        //
        //******************************************************************* 

        #region public Properties

        /// TODOC <_include file='doc\PropertyTag.uex' path='docs/doc[@for="PropertyTag.Name"]/*' /> 
        // Name of semantic property contained inside the  element.
        public string Name 
        { 
            get
            { 
                return _name;
            }
            set
            { 
                _name = GetTrimmedName (value, "value");
            } 
        } 

        // Prefast cannot figure out that paramater checking is done 
#pragma warning disable 56526

        /// TODOC <_include file='doc\PropertyTag.uex' path='docs/doc[@for="PropertyTag.Value"]/*' />
        // Value of semantic property contained inside the  element. 
        public object Value
        { 
            get { return _value; } 
            set
            { 
                Helpers.ThrowIfNull (value, "value");

                if ((value is String) ||
                (value is Boolean) || 
                (value is Int32) ||
                (value is Double)) 
                { 
                    _value = value;
                } 
                else
                {
                    throw new ArgumentException (SR.Get (SRID.InvalidValueType), "value");
                } 
            }
        } 
 
#pragma warning restore 56526
 
        #endregion

        //********************************************************************
        // 
        // Internal methods
        // 
        //******************************************************************** 

        #region Internal methods 

        internal override void WriteSrgs (XmlWriter writer)
        {
            // Figure out if the tag contains a value. 
            bool hasValue = Value != null;
 
            // Do not write the tag if it is empty 
            bool hasName = !string.IsNullOrEmpty (_name);
            // Write text 
            writer.WriteStartElement ("tag");

            StringBuilder sb = new StringBuilder ();
 
            if (hasName)
            { 
                sb.Append (_name); 
                sb.Append ("=");
            } 

            if (hasValue)
            {
                if (Value is string) 
                {
                    sb.AppendFormat (CultureInfo.InvariantCulture, "\"{0}\"", Value.ToString ()); 
                } 
                else
                { 
                    sb.Append (Value.ToString ());
                }
            }
 
            writer.WriteString (sb.ToString ());
            writer.WriteEndElement (); 
        } 

        internal override void Validate (SrgsGrammar grammar) 
        {
            SrgsTagFormat tagFormat = grammar.TagFormat;
            if (tagFormat == SrgsTagFormat.Default)
            { 
                grammar.TagFormat |= SrgsTagFormat.KeyValuePairs;
            } 
            else if (tagFormat != SrgsTagFormat.KeyValuePairs) 
            {
                XmlParser.ThrowSrgsException (SRID.SapiPropertiesAndSemantics); 
            }
        }

        void IPropertyTag.NameValue (IElement parent, string name, object value) 
        {
            _name = name; 
            _value = value; 
        }
 
        internal override string DebuggerDisplayString ()
        {
            StringBuilder sb = new StringBuilder ("SrgsNameValue ");
 
            if (_name != null)
            { 
                sb.Append (_name); 
                sb.Append (" (");
            } 

            if (_value != null)
            {
                if (_value is string) 
                {
                    sb.AppendFormat (CultureInfo.InvariantCulture, "\"{0}\"", _value.ToString ()); 
                } 
                else
                { 
                    sb.Append (_value.ToString ());
                }
            }
            else 
            {
                sb.Append ("null"); 
            } 

            if (_name != null) 
            {
                sb.Append (")");
            }
 
            return sb.ToString ();
        } 
 
        #endregion
 
        //*******************************************************************
        //
        // Private Methods
        // 
        //********************************************************************
 
        #region Private Methods 

        ///  
        /// Checks if the name is not null and just made of blanks
        /// Returned the trimmed name
        /// 
        ///  
        /// 
        ///  
        static private string GetTrimmedName (string name, string parameterName) 
        {
            Helpers.ThrowIfEmptyOrNull (name, parameterName); 

            // Remove the leading and trailing spaces
            name = name.Trim (Helpers._achTrimChars);
 
            // Run again the validation code
            Helpers.ThrowIfEmptyOrNull (name, parameterName); 
 
            return name;
        } 

        #endregion

        //******************************************************************* 
        //
        // Private Fields 
        // 
        //*******************************************************************
 
        #region Private Fields

        private string _name;
 
        private object _value;
 
        #endregion 
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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