2 // System.Web.UI.HtmlControls.HtmlTextArea.cs
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.ComponentModel;
30 using System.Collections.Specialized;
31 using System.Globalization;
32 using System.Security.Permissions;
33 using System.Web.Util;
35 namespace System.Web.UI.HtmlControls {
38 [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
39 [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
41 [DefaultEvent ("ServerChange")]
42 [ValidationProperty ("Value")]
44 [SupportsEventValidation]
46 public class HtmlTextArea : HtmlContainerControl, IPostBackDataHandler
48 static readonly object serverChangeEvent = new object ();
50 public HtmlTextArea ()
57 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
58 [WebSysDescription("")]
59 [WebCategory("Appearance")]
62 string s = Attributes ["cols"];
63 return (s == null) ? -1 : Convert.ToInt32 (s);
67 Attributes.Remove ("cols");
69 Attributes ["cols"] = value.ToString (Helpers.InvariantCulture);
74 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
75 [WebSysDescription("")]
76 [WebCategory("Behavior")]
77 public virtual string Name {
78 get { return UniqueID; }
83 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
84 [WebSysDescription("")]
85 [WebCategory("Appearance")]
88 string s = Attributes ["rows"];
89 return (s == null) ? -1 : Convert.ToInt32 (s);
93 Attributes.Remove ("rows");
95 Attributes ["rows"] = value.ToString (Helpers.InvariantCulture);
100 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
101 [WebSysDescription("")]
102 [WebCategory("Appearance")]
103 public string Value {
104 get { return InnerText; }
105 set { InnerText = value; }
109 protected override void AddParsedSubObject (object obj)
111 if (!((obj is LiteralControl) || (obj is DataBoundLiteralControl))) {
112 throw new HttpException (Locale.GetText ("Wrong type."));
114 base.AddParsedSubObject (obj);
122 override void OnPreRender (EventArgs e)
124 base.OnPreRender (e);
126 if (Page != null && !Disabled) {
127 Page.RegisterRequiresPostBack (this);
129 Page.RegisterEnabledControl (this);
134 protected virtual void OnServerChange (EventArgs e)
136 EventHandler serverChange = (EventHandler) Events [serverChangeEvent];
137 if (serverChange != null)
138 serverChange (this, e);
141 protected override void RenderAttributes (HtmlTextWriter writer)
145 Page.ClientScript.RegisterForEventValidation (UniqueID);
147 if (Attributes ["name"] == null) {
148 writer.WriteAttribute ("name", Name);
150 base.RenderAttributes (writer);
154 protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
156 return DefaultLoadPostData (postDataKey, postCollection);
159 protected virtual void RaisePostDataChangedEvent ()
161 ValidateEvent (UniqueID, String.Empty);
162 OnServerChange (EventArgs.Empty);
166 internal bool DefaultLoadPostData (string postDataKey, NameValueCollection postCollection)
168 string s = postCollection [postDataKey];
169 if ((s != null) && (s != Value)) {
176 bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
179 return LoadPostData (postDataKey, postCollection);
181 return DefaultLoadPostData (postDataKey, postCollection);
185 void IPostBackDataHandler.RaisePostDataChangedEvent ()
188 RaisePostDataChangedEvent ();
190 OnServerChange (EventArgs.Empty);
195 [WebSysDescription("")]
196 [WebCategory("Action")]
197 public event EventHandler ServerChange {
198 add { Events.AddHandler (serverChangeEvent, value); }
199 remove { Events.RemoveHandler (serverChangeEvent, value); }