Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / RepeatInfo.cs / 1 / RepeatInfo.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Globalization; using System.IO; using System.Web; using System.Web.UI; using System.Security.Permissions; using System.Web.Util; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class RepeatInfo { private RepeatDirection repeatDirection; private RepeatLayout repeatLayout; private int repeatColumns; private string caption; private TableCaptionAlign captionAlign; private bool useAccessibleHeader; private bool outerTableImplied; private bool enableLegacyRendering; ///Defines the information used to render a list of items using /// a ///. /// public RepeatInfo() { repeatDirection = RepeatDirection.Vertical; repeatLayout = RepeatLayout.Table; repeatColumns = 0; outerTableImplied = false; } public string Caption { get { return (caption == null) ? String.Empty : caption; } set { caption = value; } } public TableCaptionAlign CaptionAlign { get { return captionAlign; } set { if ((value < TableCaptionAlign.NotSet) || (value > TableCaptionAlign.Right)) { throw new ArgumentOutOfRangeException("value"); } captionAlign = value; } } // DevDiv 33149: A backward compat. switch for Everett rendering internal bool EnableLegacyRendering { get { return enableLegacyRendering; } set { enableLegacyRendering = value; } } ///Initializes a new instance of the ///class. This class is not /// inheritable. /// Indicates whether an outer table is implied /// for the items. /// public bool OuterTableImplied { get { return outerTableImplied; } set { outerTableImplied = value; } } ////// public int RepeatColumns { get { return repeatColumns; } set { repeatColumns = value; } } ///Indicates the column count of items. ////// public RepeatDirection RepeatDirection { get { return repeatDirection; } set { if (value < RepeatDirection.Horizontal || value > RepeatDirection.Vertical) { throw new ArgumentOutOfRangeException("value"); } repeatDirection = value; } } ///Indicates the direction of flow of items. ////// Indicates the layout of items. /// public RepeatLayout RepeatLayout { get { return repeatLayout; } set { if (value < RepeatLayout.Table || value > RepeatLayout.Flow) { throw new ArgumentOutOfRangeException("value"); } repeatLayout = value; } } public bool UseAccessibleHeader { get { return useAccessibleHeader; } set { useAccessibleHeader = value; } } ////// private void RenderHorizontalRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) { Debug.Assert(outerTableImplied == false, "Cannot use outer implied table with Horizontal layout"); int itemCount = user.RepeatedItemCount; int totalColumns = repeatColumns; int currentColumn = 0; if (totalColumns == 0) { // 0 implies a complete horizontal repetition without any // column count constraints totalColumns = itemCount; } WebControl outerControl = null; bool tableLayout = false; switch (repeatLayout) { case RepeatLayout.Table: outerControl = new Table(); if (Caption.Length != 0) { ((Table)outerControl).Caption = Caption; ((Table)outerControl).CaptionAlign = CaptionAlign; } tableLayout = true; break; case RepeatLayout.Flow: outerControl = new WebControl(HtmlTextWriterTag.Span); break; } bool separators = user.HasSeparators; // use ClientID (and not ID) since we want to render out the fully qualified client id // even though this outer control will not be parented to the control hierarchy outerControl.ID = baseControl.ClientID; outerControl.CopyBaseAttributes(baseControl); outerControl.ApplyStyle(controlStyle); outerControl.RenderBeginTag(writer); if (user.HasHeader) { if (tableLayout) { writer.RenderBeginTag(HtmlTextWriterTag.Tr); // add attributes to render for TD/TH if ((totalColumns != 1) || separators) { int columnSpan = totalColumns; if (separators) columnSpan += totalColumns; writer.AddAttribute(HtmlTextWriterAttribute.Colspan, columnSpan.ToString(NumberFormatInfo.InvariantInfo)); } if (useAccessibleHeader) { writer.AddAttribute(HtmlTextWriterAttribute.Scope, "col"); } // add style attributes to render for TD/TH Style style = user.GetItemStyle(ListItemType.Header, -1); if (style != null) { style.AddAttributesToRender(writer); } // render begin tag if (useAccessibleHeader) { writer.RenderBeginTag(HtmlTextWriterTag.Th); } else { writer.RenderBeginTag(HtmlTextWriterTag.Td); } } user.RenderItem(ListItemType.Header, -1, this, writer); if (tableLayout) { // render end tags TD/TH and TR writer.RenderEndTag(); writer.RenderEndTag(); } else { if (totalColumns < itemCount) { // we have multiple rows, so have a break between the header and first row. if (EnableLegacyRendering) { writer.WriteObsoleteBreak(); } else { writer.WriteBreak(); } } } } for (int i = 0; i < itemCount; i++) { if (tableLayout && (currentColumn == 0)) { writer.RenderBeginTag(HtmlTextWriterTag.Tr); } if (tableLayout) { // add style attributes to render for TD Style style = user.GetItemStyle(ListItemType.Item, i); if (style != null) style.AddAttributesToRender(writer); // render begin tag for TD writer.RenderBeginTag(HtmlTextWriterTag.Td); } user.RenderItem(ListItemType.Item, i, this, writer); if (tableLayout) { // render end tag for TD writer.RenderEndTag(); } if (separators && (i != (itemCount - 1))) { if (tableLayout) { Style style = user.GetItemStyle(ListItemType.Separator, i); if (style != null) style.AddAttributesToRender(writer); writer.RenderBeginTag(HtmlTextWriterTag.Td); } user.RenderItem(ListItemType.Separator, i, this, writer); if (tableLayout) writer.RenderEndTag(); } currentColumn++; // on the last line, fill in the rest of the empty spots withs. // If there were separators, we need twice as many plus one to accomodate for // the last item not having a separator after it. if (tableLayout && i == itemCount - 1) { int unfilledColumns = totalColumns - currentColumn; if (separators == true) { int unfilledColumnsWithSeparators = (unfilledColumns * 2) + 1; if (unfilledColumnsWithSeparators > unfilledColumns) { unfilledColumns = unfilledColumnsWithSeparators; } } for (int k = 0; k < unfilledColumns; k++) { writer.RenderBeginTag(HtmlTextWriterTag.Td); writer.RenderEndTag(); } } if ((currentColumn == totalColumns) || (i == itemCount - 1)) { if (tableLayout) { // End tag for TR writer.RenderEndTag(); } else { // write out the
after rows when there are multiple rows if (totalColumns < itemCount) { if (EnableLegacyRendering) { writer.WriteObsoleteBreak(); } else { writer.WriteBreak(); } } } currentColumn = 0; } } if (user.HasFooter) { if (tableLayout) { writer.RenderBeginTag(HtmlTextWriterTag.Tr); if ((totalColumns != 1) || separators) { // add attributes to render for TD int columnSpan = totalColumns; if (separators) columnSpan += totalColumns; writer.AddAttribute(HtmlTextWriterAttribute.Colspan, columnSpan.ToString(NumberFormatInfo.InvariantInfo)); } // add style attributes to render for TD Style style = user.GetItemStyle(ListItemType.Footer, -1); if (style != null) style.AddAttributesToRender(writer); // render begin tag for TD writer.RenderBeginTag(HtmlTextWriterTag.Td); } user.RenderItem(ListItemType.Footer, -1, this, writer); if (tableLayout) { // render end tag for TR and TD writer.RenderEndTag(); writer.RenderEndTag(); } } outerControl.RenderEndTag(writer); } ////// public void RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) { if (repeatDirection == RepeatDirection.Vertical) { RenderVerticalRepeater(writer, user, controlStyle, baseControl); } else { RenderHorizontalRepeater(writer, user, controlStyle, baseControl); } } ///Renders the Repeater with the specified /// information. ////// private void RenderVerticalRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) { int itemCount = user.RepeatedItemCount; int totalColumns; int totalRows; int filledColumns; if ((repeatColumns == 0) || (repeatColumns == 1)) { // A RepeatColumns of 0 implies a completely vertical repetition in // a single column. This is same as repeatColumns of 1. totalColumns = 1; filledColumns = 1; totalRows = itemCount; } else { totalColumns = repeatColumns; totalRows = (int)((itemCount + repeatColumns - 1) / repeatColumns); if ((totalRows == 0) && (itemCount != 0)) { // if repeatColumns is a huge number like Int32.MaxValue, then the // calculation above essentially reduces down to 0 totalRows = 1; } filledColumns = itemCount % totalColumns; if (filledColumns == 0) { filledColumns = totalColumns; } } WebControl outerControl = null; bool tableLayout = false; if (outerTableImplied == false) { switch (repeatLayout) { case RepeatLayout.Table: outerControl = new Table(); if (Caption.Length != 0) { ((Table)outerControl).Caption = Caption; ((Table)outerControl).CaptionAlign = CaptionAlign; } tableLayout = true; break; case RepeatLayout.Flow: outerControl = new WebControl(HtmlTextWriterTag.Span); break; } } bool separators = user.HasSeparators; if (outerControl != null) { // use ClientID (and not ID) since we want to render out the fully qualified client id // even though this outer control will not be parented to the control hierarchy outerControl.ID = baseControl.ClientID; outerControl.CopyBaseAttributes(baseControl); outerControl.ApplyStyle(controlStyle); outerControl.RenderBeginTag(writer); } if (user.HasHeader) { if (tableLayout) { writer.RenderBeginTag(HtmlTextWriterTag.Tr); // add attributes to render for TH if (totalColumns != 1) { int columnSpan = totalColumns; if (separators) columnSpan += totalColumns; writer.AddAttribute(HtmlTextWriterAttribute.Colspan, columnSpan.ToString(NumberFormatInfo.InvariantInfo)); } if (useAccessibleHeader) { writer.AddAttribute(HtmlTextWriterAttribute.Scope, "col"); } // add style attributes to render for TD/TH Style style = user.GetItemStyle(ListItemType.Header, -1); if (style != null) { style.AddAttributesToRender(writer); } // render begin tag for TD/TH if (useAccessibleHeader) { writer.RenderBeginTag(HtmlTextWriterTag.Th); } else { writer.RenderBeginTag(HtmlTextWriterTag.Td); } } user.RenderItem(ListItemType.Header, -1, this, writer); if (tableLayout) { // render end tags TD/TH and TR writer.RenderEndTag(); writer.RenderEndTag(); } else if (outerTableImplied == false) { if (EnableLegacyRendering) { writer.WriteObsoleteBreak(); } else { writer.WriteBreak(); } } } int itemCounter = 0; for (int currentRow = 0; currentRow < totalRows; currentRow++) { if (tableLayout) { writer.RenderBeginTag(HtmlTextWriterTag.Tr); } int itemIndex = currentRow; for (int currentCol = 0; currentCol < totalColumns; currentCol++) { if (itemCounter >= itemCount) { // done rendering all items, so break out of the loop now... // we might end up here, in unfilled columns attempting to re-render items that // have already been rendered on the next column in a prior row. break; } if (currentCol != 0) { itemIndex += totalRows; // if the previous column (currentColumn - 1) was not a filled column, i.e., // it had one less item (the maximum possible), then subtract 1 from the item index. if ((currentCol - 1) >= filledColumns) { itemIndex--; } } if (itemIndex >= itemCount) continue; itemCounter++; if (tableLayout) { // add style attributes to render for TD Style style = user.GetItemStyle(ListItemType.Item, itemIndex); if (style != null) style.AddAttributesToRender(writer); // render begin tag for TD writer.RenderBeginTag(HtmlTextWriterTag.Td); } user.RenderItem(ListItemType.Item, itemIndex, this, writer); if (tableLayout) { // render end tag for TD writer.RenderEndTag(); } if (separators) { if (itemIndex != (itemCount - 1)) { if (totalColumns == 1) { if (tableLayout) { writer.RenderEndTag(); writer.RenderBeginTag(HtmlTextWriterTag.Tr); } else { if (!outerTableImplied) { if (EnableLegacyRendering) { writer.WriteObsoleteBreak(); } else { writer.WriteBreak(); } } } } if (tableLayout) { Style style = user.GetItemStyle(ListItemType.Separator, itemIndex); if (style != null) style.AddAttributesToRender(writer); writer.RenderBeginTag(HtmlTextWriterTag.Td); } if (itemIndex < itemCount) user.RenderItem(ListItemType.Separator, itemIndex, this, writer); if (tableLayout) writer.RenderEndTag(); } else { // if we're on the last filled line and separators are specified, add another// to accomodate for the lack of a separator on the last item. If there's only one // column, though, separators will get their own row anyways. if (tableLayout && totalColumns > 1) { writer.RenderBeginTag(HtmlTextWriterTag.Td); writer.RenderEndTag(); } } } } // on the last line, fill in the remaining empty slots with s. We need twice as many // if there were separators. if (tableLayout) { if (currentRow == totalRows - 1) { int unfilledColumns = totalColumns - filledColumns; if (separators) { int unfilledColumnsWithSeparators = unfilledColumns * 2; if (unfilledColumnsWithSeparators >= unfilledColumns) { unfilledColumns = unfilledColumnsWithSeparators; } } if (unfilledColumns != 0) { for (int i = 0; i < unfilledColumns; i++) { writer.RenderBeginTag(HtmlTextWriterTag.Td); writer.RenderEndTag(); } } } writer.RenderEndTag(); } else { if (((currentRow != totalRows - 1) || user.HasFooter) && (outerTableImplied == false)) { if (EnableLegacyRendering) { writer.WriteObsoleteBreak(); } else { writer.WriteBreak(); } } } } if (user.HasFooter) { if (tableLayout) { writer.RenderBeginTag(HtmlTextWriterTag.Tr); // add attributes to render for TD if (totalColumns != 1) { int columnSpan = totalColumns; if (separators) columnSpan += totalColumns; writer.AddAttribute(HtmlTextWriterAttribute.Colspan, columnSpan.ToString(NumberFormatInfo.InvariantInfo)); } // add style attributes to render for TD Style style = user.GetItemStyle(ListItemType.Footer, -1); if (style != null) style.AddAttributesToRender(writer); // render begin tag for TD writer.RenderBeginTag(HtmlTextWriterTag.Td); } user.RenderItem(ListItemType.Footer, -1, this, writer); if (tableLayout) { // render end tag for TR and TD writer.RenderEndTag(); writer.RenderEndTag(); } } if (outerControl != null) outerControl.RenderEndTag(writer); } } }
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