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//------------------------------------------------------------------------------
// <copyright file="DataListItem.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.ComponentModel;
using System.Web.UI;
using System.Web.Util;
/// <devdoc>
/// <para>Represents an item in the <see cref='System.Web.UI.WebControls.DataList'/>. </para>
/// </devdoc>
[
ToolboxItem(false)
]
public class DataListItem : WebControl, IDataItemContainer {
private int itemIndex;
private ListItemType itemType;
private object dataItem;
/// <devdoc>
/// <para>Initializes a new instance of the <see cref='System.Web.UI.WebControls.DataListItem'/> class.</para>
/// </devdoc>
public DataListItem(int itemIndex, ListItemType itemType) {
this.itemIndex = itemIndex;
this.itemType = itemType;
}
/// <devdoc>
/// <para>Represents an item in the <see cref='System.Web.UI.WebControls.DataList'/>. </para>
/// </devdoc>
public virtual object DataItem {
get {
return dataItem;
}
set {
dataItem = value;
}
}
/// <devdoc>
/// <para>Indicates the index of the item in the <see cref='System.Web.UI.WebControls.DataList'/>. This property is
/// read-only.</para>
/// </devdoc>
public virtual int ItemIndex {
get {
return itemIndex;
}
}
/// <devdoc>
/// <para>Indicates the type of the item in the <see cref='System.Web.UI.WebControls.DataList'/>.</para>
/// </devdoc>
public virtual ListItemType ItemType {
get {
return itemType;
}
}
public override bool SupportsDisabledAttribute {
get {
return RenderingCompatibility < VersionUtil.Framework40;
}
}
/// <devdoc>
/// </devdoc>
protected override Style CreateControlStyle() {
return new TableItemStyle();
}
/// <internalonly/>
/// <devdoc>
/// </devdoc>
protected override bool OnBubbleEvent(object source, EventArgs e) {
if (e is CommandEventArgs) {
DataListCommandEventArgs args = new DataListCommandEventArgs(this, source, (CommandEventArgs)e);
RaiseBubbleEvent(this, args);
return true;
}
return false;
}
/// <devdoc>
/// <para>Displays a <see cref='System.Web.UI.WebControls.DataListItem'/> on the client.</para>
/// </devdoc>
public virtual void RenderItem(HtmlTextWriter writer, bool extractRows, bool tableLayout) {
HttpContext con = Context;
if ((con != null) && con.TraceIsEnabled) {
int presize = con.Response.GetBufferedLength();
RenderItemInternal(writer, extractRows, tableLayout);
int postsize = con.Response.GetBufferedLength();
con.Trace.AddControlSize(UniqueID, postsize - presize);
}
else
RenderItemInternal(writer, extractRows, tableLayout);
}
private void RenderItemInternal(HtmlTextWriter writer, bool extractRows, bool tableLayout) {
if (extractRows == false) {
if (tableLayout) {
// in table mode, style information has gone on the containing TD
RenderContents(writer);
}
else {
// in non-table mode, the item itself is responsible for putting
// out the style information
RenderControl(writer);
}
}
else {
IEnumerator controlEnum = this.Controls.GetEnumerator();
Table templateTable = null;
bool hasControls = false;
while (controlEnum.MoveNext()) {
hasControls = true;
Control c = (Control)controlEnum.Current;
if (c is Table) {
templateTable = (Table)c;
break;
}
}
if (templateTable != null) {
IEnumerator rowEnum = templateTable.Rows.GetEnumerator();
while (rowEnum.MoveNext()) {
TableRow r = (TableRow)rowEnum.Current;
r.RenderControl(writer);
}
}
else if (hasControls) {
// there was a template, since there were controls but
// none of them was a table... so throw an exception here
throw new HttpException(SR.GetString(SR.DataList_TemplateTableNotFound,
Parent.ID, itemType.ToString()));
}
}
}
/// <internalonly/>
/// <devdoc>
/// </devdoc>
protected internal virtual void SetItemType(ListItemType itemType) {
this.itemType = itemType;
}
/// <internalonly/>
/// <devdoc>
/// </devdoc>
object IDataItemContainer.DataItem {
get {
return DataItem;
}
}
int IDataItemContainer.DataItemIndex {
get {
return ItemIndex;
}
}
int IDataItemContainer.DisplayIndex {
get {
return ItemIndex;
}
}
}
}
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