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 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34
  35 namespace System.Web.UI {
  36
  37         public sealed class AttributeCollection
  38         {
  39                 private StateBag bag;
  40                 private CssStyleCollection styleCollection;
  41
  42                 public AttributeCollection (StateBag bag)
  43                 {
  44                         this.bag = bag;
  45                 }
  46
  47                 public int Count {
  48                         get { return bag.Count; }
  49                 }
  50
  51                 public CssStyleCollection CssStyle {
  52                         get {
  53                                 if (styleCollection == null)
  54                                         styleCollection = new CssStyleCollection (bag);
  55                                 return styleCollection;
  56                         }
  57                 }
  58
  59                 public string this [string key] {
  60                         get { return bag [key] as string; }
  61
  62                         set { bag.Add (key, value); }
  63                 }
  64
  65                 public ICollection Keys {
  66                         get { return bag.Keys; }
  67                 }
  68
  69                 public void Add (string key, string value)
  70                 {
  71                         if (styleCollection != null && 0 == String.Compare (key, "style", true))
  72                                 styleCollection.FillStyle (value);
  73                         else
  74                                 bag.Add (key, value);
  75                 }
  76
  77                 public void AddAttributes (HtmlTextWriter writer)
  78                 {
  79                         foreach (string key in bag.Keys) {
  80                                 string value = bag [key] as string;
  81                                 writer.AddAttribute (key, value);
  82                         }
  83                 }
  84
  85                 public void Clear ()
  86                 {
  87                         bag.Clear ();
  88                 }
  89
  90                 public void Remove (string key)
  91                 {
  92                         bag.Remove (key);
  93                 }
  94
  95                 public void Render (HtmlTextWriter writer)
  96                 {
  97                         foreach (string key in bag.Keys) {
  98                                 string value = bag [key] as string;
  99                                 if (value != null)
 100                                         writer.WriteAttribute (key, value);
 101                         }
 102                 }
 103         }
 104 }