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Java > Open Source Codes > org > eclipse > ui > internal > themes > CascadingTheme


1 /*******************************************************************************
2  * Copyright (c) 2004, 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/

11 package org.eclipse.ui.internal.themes;
12
13 import java.util.Set JavaDoc;
14
15 import org.eclipse.core.commands.common.EventManager;
16 import org.eclipse.jface.resource.ColorRegistry;
17 import org.eclipse.jface.resource.FontRegistry;
18 import org.eclipse.jface.util.IPropertyChangeListener;
19 import org.eclipse.jface.util.PropertyChangeEvent;
20 import org.eclipse.ui.themes.ITheme;
21
22 /**
23  * @since 3.0
24  */

25 public class CascadingTheme extends EventManager implements ITheme {
26
27     private CascadingFontRegistry fontRegistry;
28
29     private CascadingColorRegistry colorRegistry;
30
31     private ITheme currentTheme;
32
33     private IPropertyChangeListener listener = new IPropertyChangeListener() {
34
35         public void propertyChange(PropertyChangeEvent event) {
36             fire(event);
37         }
38     };
39
40     /**
41      * @param colorRegistry
42      * @param fontRegistry
43      */

44     public CascadingTheme(ITheme currentTheme,
45             CascadingColorRegistry colorRegistry,
46             CascadingFontRegistry fontRegistry) {
47         this.currentTheme = currentTheme;
48         this.colorRegistry = colorRegistry;
49         this.fontRegistry = fontRegistry;
50
51         fontRegistry.addListener(listener);
52         colorRegistry.addListener(listener);
53     }
54
55     /**
56      * @param event
57      */

58     protected void fire(PropertyChangeEvent event) {
59         Object JavaDoc[] listeners = getListeners();
60         for (int i = 0; i < listeners.length; i++) {
61             ((IPropertyChangeListener) listeners[i]).propertyChange(event);
62         }
63     }
64
65     /* (non-Javadoc)
66      * @see org.eclipse.ui.themes.ITheme#addPropertyChangeListener(org.eclipse.jface.util.IPropertyChangeListener)
67      */

68     public void addPropertyChangeListener(IPropertyChangeListener listener) {
69         addListenerObject(listener);
70     }
71
72     /* (non-Javadoc)
73      * @see org.eclipse.ui.themes.ITheme#removePropertyChangeListener(org.eclipse.jface.util.IPropertyChangeListener)
74      */

75     public void removePropertyChangeListener(IPropertyChangeListener listener) {
76         removeListenerObject(listener);
77     }
78
79     /* (non-Javadoc)
80      * @see org.eclipse.ui.themes.ITheme#getId()
81      */

82     public String JavaDoc getId() {
83         return currentTheme.getId();
84     }
85
86     /* (non-Javadoc)
87      * @see org.eclipse.ui.themes.ITheme#getLabel()
88      */

89     public String JavaDoc getLabel() {
90         return currentTheme.getLabel();
91     }
92
93     /* (non-Javadoc)
94      * @see org.eclipse.ui.themes.ITheme#getColorRegistry()
95      */

96     public ColorRegistry getColorRegistry() {
97         return colorRegistry;
98     }
99
100     /* (non-Javadoc)
101      * @see org.eclipse.ui.themes.ITheme#getFontRegistry()
102      */

103     public FontRegistry getFontRegistry() {
104         return fontRegistry;
105     }
106
107     /* (non-Javadoc)
108      * @see org.eclipse.ui.themes.ITheme#dispose()
109      */

110     public void dispose() {
111         colorRegistry.removeListener(listener);
112         fontRegistry.removeListener(listener);
113     }
114
115     /* (non-Javadoc)
116      * @see org.eclipse.ui.themes.ITheme#getString(java.lang.String)
117      */

118     public String JavaDoc getString(String JavaDoc key) {
119         return currentTheme.getString(key);
120     }
121
122     /* (non-Javadoc)
123      * @see org.eclipse.ui.themes.ITheme#getInt(java.lang.String)
124      */

125     public int getInt(String JavaDoc key) {
126         return currentTheme.getInt(key);
127     }
128
129     /* (non-Javadoc)
130      * @see org.eclipse.ui.themes.ITheme#getBoolean(java.lang.String)
131      */

132     public boolean getBoolean(String JavaDoc key) {
133         return currentTheme.getBoolean(key);
134     }
135
136     /* (non-Javadoc)
137      * @see org.eclipse.ui.themes.ITheme#keySet()
138      */

139     public Set JavaDoc keySet() {
140         return currentTheme.keySet();
141     }
142
143 }
144
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