2 // System.Web.UI.AttributeCollection.cs
5 // Duncan Mak (duncan@ximian.com)
6 // Gonzalo Paniagua (gonzalo@ximian.com)
8 // (C) 2002 Ximian, Inc. (http://www.ximian.com
9 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Collections;
32 using System.Globalization;
33 using System.Security.Permissions;
35 namespace System.Web.UI {
37 // CAS - no InheritanceDemand here as the class is sealed
38 [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
39 public sealed class AttributeCollection
42 private CssStyleCollection styleCollection;
43 internal const string StyleAttribute = "style";
45 public AttributeCollection (StateBag bag)
50 public override bool Equals (object obj)
52 AttributeCollection other = obj as AttributeCollection;
57 if (Count != other.Count) {
61 foreach (string key in Keys) {
62 if (0 == String.CompareOrdinal (key, StyleAttribute)) {
65 if (0 == String.CompareOrdinal (other [key], this [key])) {
70 if ((styleCollection == null && other.styleCollection != null) ||
71 (styleCollection != null && other.styleCollection == null)) {
74 else if (styleCollection != null){
75 // other.styleCollection != null too
76 if (styleCollection.Count != other.styleCollection.Count){
79 foreach (string styleKey in styleCollection.Keys){
80 if (0 == String.CompareOrdinal(styleCollection [styleKey], other.styleCollection [styleKey])) {
89 public override int GetHashCode ()
93 foreach (string key in Keys) {
94 if (key == StyleAttribute) {
97 hashValue ^= key.GetHashCode ();
98 string value = this [key];
100 hashValue ^= value.GetHashCode ();
104 if (styleCollection != null) {
105 foreach (string styleKey in styleCollection.Keys) {
106 hashValue ^= styleCollection [styleKey].GetHashCode ();
107 string styleValue = styleCollection [styleKey];
108 if (styleValue != null) {
109 hashValue ^= styleValue.GetHashCode ();
118 get { return bag.Count; }
121 public CssStyleCollection CssStyle {
123 if (styleCollection == null)
124 styleCollection = new CssStyleCollection (bag);
125 return styleCollection;
129 public string this [string key] {
130 get { return bag [key] as string; }
137 public ICollection Keys {
138 get { return bag.Keys; }
141 public void Add (string key, string value)
143 if (0 == String.Compare (key, StyleAttribute, true, CultureInfo.InvariantCulture)) {
144 CssStyle.Value = value;
147 bag.Add (key, value);
150 public void AddAttributes (HtmlTextWriter writer)
152 foreach (string key in bag.Keys) {
153 string value = bag [key] as string;
154 writer.AddAttribute (key, value);
164 public void Remove (string key)
166 if (0 == String.Compare (key, StyleAttribute, true, CultureInfo.InvariantCulture)) {
173 public void Render (HtmlTextWriter writer)
175 foreach (string key in bag.Keys) {
176 string value = bag [key] as string;
178 writer.WriteAttribute (key, value, true);
183 internal void CopyFrom (AttributeCollection attributeCollection)
185 if (attributeCollection == null || attributeCollection.Count == 0)
188 foreach (string key in attributeCollection.bag.Keys)
189 this.Add (key, attributeCollection [key]);