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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
//------------------------------------------------------------------------------
// <copyright file="HtmlContainerControl.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.HtmlControls {
using System.Runtime.Serialization.Formatters;
using System;
using System.Collections;
using System.ComponentModel;
using System.IO;
using System.Web.UI;
using System.Security.Permissions;
/*
* A control representing an intrinsic Html tag.
*/
/// <devdoc>
/// <para>The <see langword='HtmlContainerControl'/>
/// class defines the methods,
/// properties and events
/// available to all Html Server controls that must have a
/// closing tag.</para>
/// </devdoc>
abstract public class HtmlContainerControl : HtmlControl {
/*
* Creates a new WebControl
*/
/// <devdoc>
/// <para>Initializes a new instance of a <see cref='System.Web.UI.HtmlControls.HtmlContainerControl'/> class using
/// default values.</para>
/// </devdoc>
protected HtmlContainerControl() : this("span") {
}
/*
* Creates a new HtmlContainerControl
*/
/// <devdoc>
/// <para>Initializes a new instance of a <see cref='System.Web.UI.HtmlControls.HtmlContainerControl'/> class using the
/// specified string.</para>
/// </devdoc>
public HtmlContainerControl(string tag) : base(tag) {
}
/*
* The inner html content between the begin and end tag.
* A set will replace any existing child controls with a single literal.
* A get will return the text of a single literal child OR
* will throw an exception if there are no children, more than one
* child, or the single child is not a literal.
*/
/// <devdoc>
/// <para>
/// Gets or sets the
/// content found between the opening and closing tags of the specified HTML server control.
/// </para>
/// </devdoc>
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
HtmlControlPersistable(false),
]
public virtual string InnerHtml {
get {
if (IsLiteralContent())
return((LiteralControl) Controls[0]).Text;
else if (HasControls() && (Controls.Count == 1) && Controls[0] is DataBoundLiteralControl)
return ((DataBoundLiteralControl) Controls[0]).Text;
else {
if (Controls.Count == 0)
return String.Empty;
throw new HttpException(SR.GetString(SR.Inner_Content_not_literal, ID));
}
}
set {
Controls.Clear();
Controls.Add(new LiteralControl(value));
ViewState["innerhtml"] = value;
}
}
/*
* The inner text content between the begin and end tag.
* A set will replace any existing child controls with a single literal.
* A get will return the text of a single literal child OR
* will throw an exception if there are no children, more than one child, or
* the single child is not a literal.
*/
/// <devdoc>
/// <para>
/// Gets or sets all text between the opening and closing tags
/// of the specified HTML server control.
/// </para>
/// </devdoc>
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
HtmlControlPersistable(false),
]
public virtual string InnerText {
get {
return HttpUtility.HtmlDecode(InnerHtml);
}
set {
InnerHtml = HttpUtility.HtmlEncode(value);
}
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
protected override ControlCollection CreateControlCollection() {
return new ControlCollection(this);
}
/// <internalonly/>
/// <devdoc>
/// </devdoc>
protected override void LoadViewState(object savedState) {
if (savedState != null) {
base.LoadViewState(savedState);
string s = (string)ViewState["innerhtml"];
// Dev10 703061 If InnerHtml is set, we want to clear out any child controls, but not dirty viewstate
if (s != null) {
Controls.Clear();
Controls.Add(new LiteralControl(s));
}
}
}
/*
* Render the control into the given writer.
*/
/// <internalonly/>
/// <devdoc>
/// </devdoc>
protected internal override void Render(HtmlTextWriter writer) {
RenderBeginTag(writer);
RenderChildren(writer);
RenderEndTag(writer);
}
/*
* Override to prevent InnerHtml from being rendered as an attribute.
*/
/// <internalonly/>
/// <devdoc>
/// </devdoc>
protected override void RenderAttributes(HtmlTextWriter writer) {
ViewState.Remove("innerhtml");
base.RenderAttributes(writer);
}
/*
* Render the end tag, </TAGNAME>.
*/
/// <internalonly/>
/// <devdoc>
/// </devdoc>
protected virtual void RenderEndTag(HtmlTextWriter writer) {
writer.WriteEndTag(TagName);
}
}
}
|
