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//------------------------------------------------------------------------------
// <copyright file="DataControlFieldHeaderCell.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Globalization;
/// <devdoc>
/// <para>Creates a special header cell that is contained within a DataControlField.</para>
/// </devdoc>
public class DataControlFieldHeaderCell : DataControlFieldCell {
public DataControlFieldHeaderCell(DataControlField containingField) : base(HtmlTextWriterTag.Th, containingField) {
}
/// <devdoc>
/// <para>
/// Sets the abbreviated text for a header cell. The abbreviated text
/// is rendered with the HTML ABBR attribute. The ABBR attribute is important
/// for screen readers since it allows them to read a shortened version of a header for each cell in the table.
/// </para>
/// </devdoc>
public virtual string AbbreviatedText {
get {
object x = ViewState["AbbrText"];
return((x == null) ? String.Empty : (string)x);
}
set {
ViewState["AbbrText"] = value;
}
}
/// <devdoc>
/// <para>
/// Represents the cells that the header applies to. Renders the HTML scope attribute. Possible values are from the TableHeaderScope enumeration: Column and Row.
/// </para>
/// </devdoc>
public virtual TableHeaderScope Scope {
get {
object x = ViewState["Scope"];
return((x == null) ? TableHeaderScope.NotSet : (TableHeaderScope)x);
}
set {
ViewState["Scope"] = value;
}
}
/// <devdoc>
/// <para>Adds header cell attributes to the list of attributes to render.</para>
/// </devdoc>
protected override void AddAttributesToRender(HtmlTextWriter writer) {
base.AddAttributesToRender(writer);
TableHeaderScope scope = Scope;
if (scope != TableHeaderScope.NotSet) {
if (scope == TableHeaderScope.Column) {
writer.AddAttribute(HtmlTextWriterAttribute.Scope, "col");
}
else {
writer.AddAttribute(HtmlTextWriterAttribute.Scope, "row");
}
}
String abbr = AbbreviatedText;
if (!String.IsNullOrEmpty(abbr)) {
writer.AddAttribute(HtmlTextWriterAttribute.Abbr, abbr);
}
}
}
}
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