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//
// System.Web.UI.HtmlControls.HtmlContainerControl.cs
//
// Authors:
// Bob Smith <bob@thestuff.net>
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) Bob Smith
// (c) 2002 Ximian, Inc. (http://www.ximian.com)
// Copyright (C) 2005-2010 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.ComponentModel;
using System.Security.Permissions;
using System.Text;
//LAMESPEC: The dox talk about HttpException but are very ambigious.
//TODO: Check to see if Render really is overridden instead of a LiteralControl being added. It apears that this is the
//case due to testing. Anything inside the block is overwritten by the content of this control, so it doesnt apear
//to do anything with children.
//TODO: If Test.InnerText = Test.InnerHtml without ever assigning anything into InnerHtml, you get this:
// Exception Details: System.Web.HttpException: Cannot get inner content of Message because the contents are not literal.
//[HttpException (0x80004005): Cannot get inner content of Message because the contents are not literal.]
// System.Web.UI.HtmlControls.HtmlContainerControl.get_InnerHtml() +278
// ASP.test3_aspx.AnchorBtn_Click(Object Source, EventArgs E) in \\genfs2\www24\bobsmith11\test3.aspx:6
// System.Web.UI.HtmlControls.HtmlAnchor.OnServerClick(EventArgs e) +108
// System.Web.UI.HtmlControls.HtmlAnchor.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +26
// System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
// System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +149
// System.Web.UI.Page.ProcessRequestMain() +660
namespace System.Web.UI.HtmlControls
{
// CAS
[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public abstract class HtmlContainerControl : HtmlControl
{
protected HtmlContainerControl () : this ("span")
{}
public HtmlContainerControl (string tag) : base(tag)
{}
[HtmlControlPersistable (false)]
[BrowsableAttribute(false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
public virtual string InnerHtml
{
get {
if (Controls.Count == 0)
return String.Empty;
if (Controls.Count == 1) {
Control ctrl = Controls [0];
LiteralControl lc = ctrl as LiteralControl;
if (lc != null)
return lc.Text;
DataBoundLiteralControl dblc = ctrl as DataBoundLiteralControl;
if (dblc != null)
return dblc.Text;
}
throw new HttpException ("There is no literal content!");
}
set {
Controls.Clear ();
Controls.Add (new LiteralControl (value));
if (value == null)
ViewState.Remove ("innerhtml");
else
ViewState ["innerhtml"] = value;
}
}
[HtmlControlPersistable (false)]
[BrowsableAttribute(false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
public virtual string InnerText
{
get {
return HttpUtility.HtmlDecode (InnerHtml);
}
set {
InnerHtml = HttpUtility.HtmlEncode (value);
}
}
protected internal override void Render (HtmlTextWriter writer)
{
RenderBeginTag (writer);
RenderChildren (writer);
RenderEndTag (writer);
}
protected virtual void RenderEndTag (HtmlTextWriter writer)
{
writer.WriteEndTag (TagName);
}
protected override void RenderAttributes (HtmlTextWriter writer)
{
ViewState.Remove ("innerhtml");
base.RenderAttributes (writer);
}
/* we need to override this because our base class
* (HtmlControl) returns an instance of
* EmptyControlCollection. */
protected override ControlCollection CreateControlCollection ()
{
return new ControlCollection (this);
}
protected override void LoadViewState (object savedState)
{
if (savedState != null) {
base.LoadViewState (savedState);
string inner = ViewState ["innerhtml"] as string;
if (inner != null)
InnerHtml = inner;
}
}
}
}
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