1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
//------------------------------------------------------------------------------
// <copyright file="TableHeaderCell.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
// TableHeaderCell.cs
//
namespace System.Web.UI.WebControls {
using System;
using System.Text;
using System.ComponentModel;
using System.Globalization;
using System.Web;
using System.Web.UI;
/// <devdoc>
/// <para> Encapsulates
/// a header cell within a table.</para>
/// </devdoc>
public class TableHeaderCell : TableCell {
/// <devdoc>
/// <para>
/// Initializes a new instance of the <see cref='System.Web.UI.WebControls.TableHeaderCell'/> class.
/// </para>
/// </devdoc>
public TableHeaderCell() : base(HtmlTextWriterTag.Th) {
}
/// <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>
[
WebCategory("Accessibility"),
DefaultValue(""),
WebSysDescription(SR.TableHeaderCell_AbbreviatedText)
]
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>
[
WebCategory("Accessibility"),
DefaultValue(TableHeaderScope.NotSet),
WebSysDescription(SR.TableHeaderCell_Scope)
]
public virtual TableHeaderScope Scope {
get {
object x = ViewState["Scope"];
return((x == null) ? TableHeaderScope.NotSet : (TableHeaderScope)x);
}
set {
ViewState["Scope"] = value;
}
}
/// <devdoc>
/// <para>
/// Contains a list of categories associated with the table header (read by screen readers). The categories can be any string values. The categories are rendered as a comma delimited list using the HTML axis attribute.
/// </para>
/// </devdoc>
[
DefaultValue(null),
TypeConverterAttribute(typeof(StringArrayConverter)),
WebCategory("Accessibility"),
WebSysDescription(SR.TableHeaderCell_CategoryText)
]
public virtual string[] CategoryText {
get {
object x = ViewState["CategoryText"];
return (x != null) ? (string[])((string[])x).Clone() : new string[0];
}
set {
if (value != null) {
ViewState["CategoryText"] = (string[])value.Clone();
}
else {
ViewState["CategoryText"] = null;
}
}
}
/// <internalonly/>
/// <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) {
writer.AddAttribute(HtmlTextWriterAttribute.Scope, scope.ToString().ToLowerInvariant());
}
String abbr = AbbreviatedText;
if (!String.IsNullOrEmpty(abbr)) {
writer.AddAttribute(HtmlTextWriterAttribute.Abbr, abbr);
}
string[] arr = CategoryText;
if (arr.Length > 0) {
bool first = true;
StringBuilder builder = new StringBuilder();
foreach (string s in arr) {
if (first) {
first = false;
}
else {
builder.Append(",");
}
builder.Append(s);
}
string val = builder.ToString();
if (!String.IsNullOrEmpty(val)) {
writer.AddAttribute(HtmlTextWriterAttribute.Axis, val);
}
}
}
}
}
|
