128 lines
4.2 KiB
C#
128 lines
4.2 KiB
C#
//
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// System.Web.UI.WebControls.Label.cs
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//
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// Authors:
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// Miguel de Icaza (miguel@novell.com)
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//
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// (C) 2005-2010 Novell, Inc (http://www.novell.com)
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//
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// TODO: Are we missing something in LoadViewState?
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//
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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.ComponentModel;
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using System.Security.Permissions;
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namespace System.Web.UI.WebControls
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{
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// CAS
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[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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// attributes
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[ControlBuilder(typeof(LabelControlBuilder))]
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[DataBindingHandler("System.Web.UI.Design.TextDataBindingHandler, " + Consts.AssemblySystem_Design)]
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[DefaultProperty("Text")]
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[Designer("System.Web.UI.Design.WebControls.LabelDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
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[ParseChildren (false)]
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[ToolboxData("<{0}:Label runat=\"server\" Text=\"Label\"></{0}:Label>")]
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[ControlValueProperty ("Text", null)]
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public class Label : WebControl, ITextControl
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{
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[Bindable(true)]
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[DefaultValue("")]
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[PersistenceMode(PersistenceMode.InnerDefaultProperty)]
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[Localizable (true)]
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[WebSysDescription ("")]
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[WebCategory ("Appearance")]
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public virtual string Text {
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get { return ViewState.GetString ("Text", String.Empty); }
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set {
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ViewState ["Text"] = value;
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if (HasControls ())
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Controls.Clear ();
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}
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}
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[IDReferenceProperty (typeof (Control))]
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[TypeConverter (typeof (AssociatedControlConverter))]
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[Themeable (false)]
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[DefaultValue("")]
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[WebSysDescription ("")]
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[WebCategory ("Accessibility")]
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public virtual string AssociatedControlID {
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get { return ViewState.GetString ("AssociatedControlID", String.Empty); }
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set { ViewState ["AssociatedControlID"] = value; }
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}
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public override bool SupportsDisabledAttribute {
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get { return RenderingCompatibilityLessThan40; }
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}
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protected override void LoadViewState (object savedState)
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{
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base.LoadViewState (savedState);
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// Make sure we clear child controls when this happens
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if (ViewState ["Text"] != null)
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Text = (string) ViewState ["Text"];
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}
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protected override void AddParsedSubObject (object obj)
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{
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if (HasControls ()) {
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base.AddParsedSubObject (obj);
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return;
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}
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LiteralControl lc = obj as LiteralControl;
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if (lc == null) {
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string s = Text;
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if (s.Length != 0) {
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Text = null;
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Controls.Add (new LiteralControl (s));
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}
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base.AddParsedSubObject (obj);
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} else {
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Text = lc.Text;
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}
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}
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protected internal override void RenderContents (HtmlTextWriter writer)
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{
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if (HasControls () || HasRenderMethodDelegate ())
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base.RenderContents (writer);
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else
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writer.Write (Text);
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}
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protected override HtmlTextWriterTag TagKey {
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get { return String.IsNullOrEmpty (AssociatedControlID) ? HtmlTextWriterTag.Span : HtmlTextWriterTag.Label; }
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}
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protected override void AddAttributesToRender (HtmlTextWriter writer)
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{
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base.AddAttributesToRender (writer);
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if (!String.IsNullOrEmpty (AssociatedControlID))
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writer.AddAttribute (HtmlTextWriterAttribute.For, NamingContainer.FindControl (AssociatedControlID).ClientID);
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}
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}
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}
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