// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
//
-// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
+// Copyright (C) 2004-2010 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
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-#if NET_2_0
-
using System.ComponentModel;
using System.Collections;
using System.Security.Permissions;
[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
// attributes
[ControlBuilder (typeof(HtmlHeadBuilder))]
- public sealed class HtmlHead: HtmlGenericControl, IParserAccessor {
-
+ public sealed class HtmlHead: HtmlGenericControl, IParserAccessor
+ {
+ string descriptionText;
+ string keywordsText;
+ HtmlMeta descriptionMeta;
+ HtmlMeta keywordsMeta;
+ string titleText;
HtmlTitle title;
- Hashtable metadata;
- ArrayList styleSheets;
+ //Hashtable metadata;
StyleSheetBag styleSheet;
public HtmlHead(): base("head") {}
protected internal override void OnInit (EventArgs e)
{
- Page.SetHeader (this);
+ base.OnInit (e);
+ Page page = Page;
+
+ if (page == null)
+ throw new HttpException ("The <head runat=\"server\"> control requires a page.");
+
+ //You can only have one <head runat="server"> control on a page.
+ if(page.Header != null)
+ throw new HttpException ("You can only have one <head runat=\"server\"> control on a page.");
+ page.SetHeader (this);
}
protected internal override void RenderChildren (HtmlTextWriter writer)
{
base.RenderChildren (writer);
- if (metadata != null) {
- foreach (DictionaryEntry entry in metadata) {
- writer.AddAttribute ("name", entry.Key.ToString ());
- writer.AddAttribute ("content", entry.Value.ToString ());
- writer.RenderBeginTag (HtmlTextWriterTag.Meta);
- writer.RenderEndTag ();
- }
+ if (title == null) {
+ writer.RenderBeginTag (HtmlTextWriterTag.Title);
+ if (!String.IsNullOrEmpty (titleText))
+ writer.Write (titleText);
+ writer.RenderEndTag ();
+ }
+ if (descriptionMeta == null && descriptionText != null) {
+ writer.AddAttribute ("name", "description");
+ writer.AddAttribute ("content", HttpUtility.HtmlAttributeEncode (descriptionText));
+ writer.RenderBeginTag (HtmlTextWriterTag.Meta);
+ writer.RenderEndTag ();
+ }
+
+ if (keywordsMeta == null && keywordsText != null) {
+ writer.AddAttribute ("name", "keywords");
+ writer.AddAttribute ("content", HttpUtility.HtmlAttributeEncode (keywordsText));
+ writer.RenderBeginTag (HtmlTextWriterTag.Meta);
+ writer.RenderEndTag ();
}
-
if (styleSheet != null)
styleSheet.Render (writer);
}
protected internal override void AddedControl (Control control, int index)
{
- if (control is HtmlTitle)
- title = (HtmlTitle) control;
+ //You can only have one <title> element within the <head> element.
+ HtmlTitle t = control as HtmlTitle;
+ if (t != null) {
+ if (title != null)
+ throw new HttpException ("You can only have one <title> element within the <head> element.");
+ title = t;
+ }
+ HtmlMeta meta = control as HtmlMeta;
+ if (meta != null) {
+ if (String.Compare ("keywords", meta.Name, StringComparison.OrdinalIgnoreCase) == 0)
+ keywordsMeta = meta;
+ else if (String.Compare ("description", meta.Name, StringComparison.OrdinalIgnoreCase) == 0)
+ descriptionMeta = meta;
+ }
base.AddedControl (control, index);
}
if (title == control)
title = null;
+ if (keywordsMeta == control)
+ keywordsMeta = null;
+ else if (descriptionMeta == control)
+ descriptionMeta = null;
base.RemovedControl (control);
}
-
- IList LinkedStyleSheets {
+ public string Description {
get {
- if (styleSheets == null) styleSheets = new ArrayList ();
- return styleSheets;
+ if (descriptionMeta != null)
+ return descriptionMeta.Content;
+ return descriptionText;
}
- }
-
- IDictionary Metadata {
+
+ set {
+ if (descriptionMeta != null)
+ descriptionMeta.Content = value;
+ else
+ descriptionText = value;
+ }
+ }
+
+ public string Keywords {
get {
- if (metadata == null) metadata = new Hashtable ();
- return metadata;
+ if (keywordsMeta != null)
+ return keywordsMeta.Content;
+ return keywordsText;
+ }
+
+ set {
+ if (keywordsMeta != null)
+ keywordsMeta.Content = value;
+ else
+ keywordsText = value;
}
}
}
public string Title {
- get { return title.Text; }
- set { title.Text = value; }
+ get {
+ if (title != null)
+ return title.Text;
+ else
+ return titleText;
+ }
+ set {
+ if (title != null)
+ title.Text = value;
+ else
+ titleText = value;
+ }
}
}
public void Render (HtmlTextWriter writer)
{
- writer.AddAttribute ("type", "text/css");
+ writer.AddAttribute ("type", "text/css", false);
writer.RenderBeginTag (HtmlTextWriterTag.Style);
foreach (StyleEntry entry in entries) {
CssStyleCollection sts = entry.Style.GetStyleAttributes (entry.UrlResolver);
- writer.Write ("\n" + entry.Selection + " {" + sts.BagToString () + "}");
+ writer.Write ("\n" + entry.Selection + " {" + sts.Value + "}");
}
writer.RenderEndTag ();
}
}
-#endif