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comparison org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/set/ObservableSet.d @ 78:0a55d2d5a946

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Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
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children 383ce7bd736b
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76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2006, 2008 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 * Matthew Hall - bug 208332
11 *******************************************************************************/
12
13 module org.eclipse.core.databinding.observable.set.ObservableSet;
14
15 import java.lang.all;
16
17 import java.util.Collection;
18 import java.util.Iterator;
19 import java.util.Set;
20
21 import org.eclipse.core.databinding.observable.AbstractObservable;
22 import org.eclipse.core.databinding.observable.ObservableTracker;
23 import org.eclipse.core.databinding.observable.Realm;
24
25 /**
26 *
27 * Abstract implementation of {@link IObservableSet}.
28 *
29 * <p>
30 * This class is thread safe. All state accessing methods must be invoked from
31 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
32 * listeners may be invoked from any thread.
33 * </p>
34 *
35 * @since 1.0
36 *
37 */
38 public abstract class ObservableSet : AbstractObservable ,
39 IObservableSet {
40
41 protected Set wrappedSet;
42
43 private bool stale = false;
44
45 protected Object elementType;
46
47 protected this(Set wrappedSet, Object elementType) {
48 this(Realm.getDefault(), wrappedSet, elementType);
49 }
50
51 protected this(Realm realm, Set wrappedSet, Object elementType) {
52 super(realm);
53 this.wrappedSet = wrappedSet;
54 this.elementType = elementType;
55 }
56
57 public synchronized void addSetChangeListener(ISetChangeListener listener) {
58 addListener(SetChangeEvent.TYPE, listener);
59 }
60
61 public synchronized void removeSetChangeListener(ISetChangeListener listener) {
62 removeListener(SetChangeEvent.TYPE, listener);
63 }
64
65 protected void fireSetChange(SetDiff diff) {
66 // fire general change event first
67 super.fireChange();
68
69 fireEvent(new SetChangeEvent(this, diff));
70 }
71
72 public bool contains(Object o) {
73 getterCalled();
74 return wrappedSet.contains(o);
75 }
76
77 public bool containsAll(Collection c) {
78 getterCalled();
79 return wrappedSet.containsAll(c);
80 }
81
82 public override bool opEquals(Object o) {
83 getterCalled();
84 return wrappedSet.equals(o);
85 }
86
87 public int hashCode() {
88 getterCalled();
89 return wrappedSet.hashCode();
90 }
91
92 public bool isEmpty() {
93 getterCalled();
94 return wrappedSet.isEmpty();
95 }
96
97 public Iterator iterator() {
98 getterCalled();
99 final Iterator wrappedIterator = wrappedSet.iterator();
100 return new class() Iterator {
101
102 public void remove() {
103 throw new UnsupportedOperationException();
104 }
105
106 public bool hasNext() {
107 ObservableTracker.getterCalled(this.outer);
108 return wrappedIterator.hasNext();
109 }
110
111 public Object next() {
112 ObservableTracker.getterCalled(this.outer);
113 return wrappedIterator.next();
114 }
115 };
116 }
117
118 public int size() {
119 getterCalled();
120 return wrappedSet.size();
121 }
122
123 public Object[] toArray() {
124 getterCalled();
125 return wrappedSet.toArray();
126 }
127
128 public Object[] toArray(Object[] a) {
129 getterCalled();
130 return wrappedSet.toArray(a);
131 }
132
133 public String toString() {
134 getterCalled();
135 return wrappedSet.toString();
136 }
137
138 protected void getterCalled() {
139 ObservableTracker.getterCalled(this);
140 }
141
142 public bool add(Object o) {
143 throw new UnsupportedOperationException();
144 }
145
146 public bool addAll(Collection c) {
147 throw new UnsupportedOperationException();
148 }
149
150 public bool remove(Object o) {
151 throw new UnsupportedOperationException();
152 }
153
154 public bool removeAll(Collection c) {
155 throw new UnsupportedOperationException();
156 }
157
158 public bool retainAll(Collection c) {
159 throw new UnsupportedOperationException();
160 }
161
162 public void clear() {
163 throw new UnsupportedOperationException();
164 }
165
166 /**
167 * @return Returns the stale state.
168 */
169 public bool isStale() {
170 getterCalled();
171 return stale;
172 }
173
174 /**
175 * @param stale
176 * The stale state to set. This will fire a stale event if the
177 * given bool is true and this observable set was not already
178 * stale.
179 */
180 public void setStale(bool stale) {
181 checkRealm();
182 bool wasStale = this.stale;
183 this.stale = stale;
184 if (!wasStale && stale) {
185 fireStale();
186 }
187 }
188
189 /**
190 * @param wrappedSet The wrappedSet to set.
191 */
192 protected void setWrappedSet(Set wrappedSet) {
193 this.wrappedSet = wrappedSet;
194 }
195
196 protected void fireChange() {
197 throw new RuntimeException("fireChange should not be called, use fireSetChange() instead"); //$NON-NLS-1$
198 }
199
200 /* (non-Javadoc)
201 * @see org.eclipse.jface.provisional.databinding.observable.AbstractObservable#dispose()
202 */
203 public synchronized void dispose() {
204 super.dispose();
205 }
206
207 public Object getElementType() {
208 return elementType;
209 }
210 }