Mercurial > projects > dwt2

annotate org.eclipse.draw2d/src/org/eclipse/draw2d/EventListenerList.d @ 12:bc29606a740c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
parents
children dbfb303e8fb0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
1 /*******************************************************************************
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
3 * All rights reserved. This program and the accompanying materials
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
4 * are made available under the terms of the Eclipse Public License v1.0
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
5 * which accompanies this distribution, and is available at
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
6 * http://www.eclipse.org/legal/epl-v10.html
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
7 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
8 * Contributors:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
9 * IBM Corporation - initial API and implementation
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
10 * Port to the D programming language:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
11 * Frank Benoit <benoit@tionex.de>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
12 *******************************************************************************/
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
13 module org.eclipse.draw2d.EventListenerList;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
14
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
15 import java.lang.all;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
16
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
17
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
18 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
19 * This class is intended for internal use only.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
20 * TODO: If this is for internal use only, we should move it to the internal package.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
21 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
22 public final class EventListenerList {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
23
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
24 private /+volatile+/ Object array[];
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
25
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
26 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
27 * Adds a listener of type <i>c</i> to the list.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
28 * @param c the class
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
29 * @param listener the listener
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
30 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
31 public synchronized void addListener(ClassInfo c, Object listener) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
32 if (listener is null || c is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
33 throw new IllegalArgumentException("");
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
34
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
35 int oldSize = (array is null) ? 0 : array.length;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
36 Object[] newArray = new Object[oldSize + 2];
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
37 if (oldSize !is 0)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
38 System.arraycopy(array, 0, newArray, 0, oldSize);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
39 newArray[oldSize++] = c;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
40 newArray[oldSize] = listener;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
41 array = newArray;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
42 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
43
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
44 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
45 * Returns <code>true</code> if this list of listeners contains a listener of type
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
46 * <i>c</i>.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
47 * @param c the type
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
48 * @return whether this list contains a listener of type <i>c</i>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
49 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
50 public synchronized bool containsListener(ClassInfo c) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
51 if (array is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
52 return false;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
53 for (int i = 0; i < array.length; i += 2)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
54 if (array[i] is c)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
55 return true;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
56 return false;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
57 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
58
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
59 static class TypeIterator : Iterator {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
60 private final Object[] items;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
61 private final ClassInfo type;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
62 private int index;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
63 this(Object items[], ClassInfo type) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
64 this.items = items;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
65 this.type = type;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
66 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
67 public Object next() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
68 Object result = items[index + 1];
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
69 index += 2;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
70 return result;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
71 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
72
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
73 public bool hasNext() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
74 if (items is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
75 return false;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
76 while (index < items.length && items[index] !is type)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
77 index += 2;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
78 return index < items.length;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
79 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
80
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
81 public void remove() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
82 throw new UnsupportedOperationException("Iterator removal not supported"); //$NON-NLS-1$
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
83 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
84 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
85
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
86 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
87 * Returns an Iterator of all the listeners of type <i>c</i>.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
88 * @param listenerType the type
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
89 * @return an Iterator of all the listeners of type <i>c</i>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
90 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
91 public synchronized Iterator getListeners(ClassInfo listenerType) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
92 return new TypeIterator(array, listenerType);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
93 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
94
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
95 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
96 * Removes the first <i>listener</i> of the specified type by identity.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
97 * @param c the type
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
98 * @param listener the listener
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
99 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
100 public synchronized void removeListener(ClassInfo c, Object listener) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
101 if (array is null || array.length is 0)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
102 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
103 if (listener is null || c is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
104 throw new IllegalArgumentException("");
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
105
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
106 int index = 0;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
107 while (index < array.length) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
108 if (array[index] is c && array[index + 1] is listener)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
109 break;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
110 index += 2;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
111 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
112 if (index is array.length)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
113 return; //listener was not found
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
114
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
115 Object newArray[] = new Object[array.length - 2];
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
116 System.arraycopy(array, 0, newArray, 0, index);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
117 System.arraycopy(array, index + 2, newArray, index, array.length - index - 2);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
118 array = newArray;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
119 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
120
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
121 }