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