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//
// System.Web.UI.WebControls.RadioButton.cs
//
// Author:
// Dick Porter <dick@ximian.com>
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections.Specialized;
using System.ComponentModel;
using System.Security.Permissions;
namespace System.Web.UI.WebControls {
// CAS
[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
// attributes
[Designer ("System.Web.UI.Design.WebControls.CheckBoxDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
[SupportsEventValidation]
public class RadioButton : CheckBox , IPostBackDataHandler
{
public RadioButton () : base ("radio")
{
}
[DefaultValue ("")]
[Themeable (false)]
[WebSysDescription ("")]
[WebCategory ("Behavior")]
public virtual string GroupName
{
get {
return (ViewState.GetString ("GroupName",
String.Empty));
}
set {
ViewState["GroupName"] = value;
}
}
internal override string NameAttribute
{
get {
string unique = UniqueID;
string gn = GroupName;
if (gn.Length == 0)
return unique;
int colon = -1;
if (unique != null) {
colon = unique.LastIndexOf (IdSeparator);
}
if (colon == -1)
return gn;
return unique.Substring (0, colon + 1) + gn;
}
}
internal string ValueAttribute {
get {
string val = (string)ViewState ["Value"];
if (val != null)
return val;
string id = ID;
if (!String.IsNullOrEmpty (id))
return id;
else
return UniqueID;
}
set {
ViewState["Value"] = value;
}
}
internal override void InternalAddAttributesToRender (HtmlTextWriter w, bool enabled)
{
Page page = Page;
if (page != null)
page.ClientScript.RegisterForEventValidation (NameAttribute, ValueAttribute);
base.InternalAddAttributesToRender (w, enabled);
w.AddAttribute (HtmlTextWriterAttribute.Value, ValueAttribute);
}
protected internal
override void OnPreRender (EventArgs e)
{
base.OnPreRender (e);
}
protected override
bool LoadPostData (string postDataKey, NameValueCollection postCollection)
{
string value = postCollection [NameAttribute];
bool checkedOnClient = value == ValueAttribute;
ValidateEvent (NameAttribute, value);
if (Checked == checkedOnClient)
return false;
Checked = checkedOnClient;
return checkedOnClient;
}
protected override void RaisePostDataChangedEvent ()
{
if (CausesValidation)
Page.Validate (ValidationGroup);
OnCheckedChanged (EventArgs.Empty);
}
bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
{
return LoadPostData (postDataKey, postCollection);
}
}
}
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