mcs/class/System.Web/System.Web.UI/AttributeCollection.cs

   1 //
   2 // System.Web.UI.AttributeCollection.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak  (duncan@ximian.com)
   6 //      Gonzalo Paniagua (gonzalo@ximian.com)
   7 //
   8 // (C) 2002 Ximian, Inc. (http://www.ximian.com
   9 //
  10
  11 using System;
  12 using System.Collections;
  13
  14 namespace System.Web.UI {
  15
  16         public sealed class AttributeCollection
  17         {
  18                 private StateBag bag;
  19                 private CssStyleCollection styleCollection;
  20
  21                 public AttributeCollection (StateBag bag)
  22                 {
  23                         this.bag = bag;
  24                 }
  25
  26                 public int Count {
  27                         get { return bag.Count; }
  28                 }
  29
  30                 public CssStyleCollection CssStyle {
  31                         get {
  32                                 if (styleCollection == null)
  33                                         styleCollection = new CssStyleCollection (bag);
  34                                 return styleCollection;
  35                         }
  36                 }
  37
  38                 public string this [string key] {
  39                         get { return bag [key] as string; }
  40
  41                         set { bag.Add (key, value); }
  42                 }
  43
  44                 public ICollection Keys {
  45                         get { return bag.Keys; }
  46                 }
  47
  48                 public void Add (string key, string value)
  49                 {
  50                         if (styleCollection != null && 0 == String.Compare (key, "style", true))
  51                                 styleCollection.FillStyle (value);
  52                         else
  53                                 bag.Add (key, value);
  54                 }
  55
  56                 public void AddAttributes (HtmlTextWriter writer)
  57                 {
  58                         foreach (string key in bag.Keys) {
  59                                 string value = bag [key] as string;
  60                                 writer.AddAttribute (key, value);
  61                         }
  62                 }
  63
  64                 public void Clear ()
  65                 {
  66                         bag.Clear ();
  67                 }
  68
  69                 public void Remove (string key)
  70                 {
  71                         bag.Remove (key);
  72                 }
  73
  74                 public void Render (HtmlTextWriter writer)
  75                 {
  76                         foreach (string key in bag.Keys) {
  77                                 string value = bag [key] as string;
  78                                 if (value != null)
  79                                         writer.WriteAttribute (key, value);
  80                         }
  81                 }
  82         }
  83 }