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//
// System.Web.UI.CssStyleCollection.cs
//
// Authors:
// Duncan Mak (duncan@ximian.com)
// Gonzalo Paniagua (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc. (http://www.ximian.com)
//
using System;
using System.Collections;
using System.Text;
namespace System.Web.UI {
public sealed class CssStyleCollection
{
private StateBag bag;
private StateBag style;
internal CssStyleCollection (StateBag bag)
{
this.bag = bag;
style = new StateBag ();
string st_string = bag ["style"] as string;
if (st_string != null)
FillStyle (st_string);
}
internal void FillStyle (string s)
{
int mark = s.IndexOf (':');
if (mark == -1)
return;
string key = s.Substring (0, mark). Trim ();
if (mark + 1 > s.Length)
return;
string fullValue = s.Substring (mark + 1);
if (fullValue == "")
return;
mark = fullValue.IndexOf (';');
string value;
if (mark == -1)
value = fullValue.Trim ();
else
value = fullValue.Substring (0, mark).Trim ();
style.Add (key, value);
if (mark + 1 > fullValue.Length)
return;
FillStyle (fullValue.Substring (mark + 1));
}
private string BagToString ()
{
StringBuilder sb = new StringBuilder ();
foreach (string k in style.Keys)
sb.AppendFormat ("{0}: {1}; ", k, style [k]);
return sb.ToString ();
}
public int Count
{
get { return style.Count; }
}
public string this [string key]
{
get {
return style [key] as string;
}
set {
Add (key, value);
}
}
public ICollection Keys {
get { return style.Keys; }
}
public void Add (string key, string value)
{
style [key] = value;
bag ["style"] = BagToString ();
}
public void Clear ()
{
bag.Remove ("style");
style.Clear ();
}
public void Remove (string key)
{
if (style [key] != null) {
style.Remove (key);
bag ["style"] = BagToString ();
}
}
}
}
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