blob: 8da5e4b2e01da9179d5ebac1c001ffb863009a42 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/*******************************************************************************
* Copyright (c) 2004, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.viewers.deferred;
import java.util.Collection;
import java.util.HashSet;
import org.eclipse.core.runtime.Assert;
/**
* Trivial implementation of an <code>IConcurrentModel</code>. Implements
* an unordered set of elements that fires off change notifications whenever
* elements are added or removed from the set. All notifications are sent
* synchronously.
*
* @since 3.1
*/
public class SetModel extends AbstractConcurrentModel {
private HashSet data = new HashSet();
/**
* Return the contents of the model.
* @return the array of elements
*
*/
public Object[] getElements() {
return data.toArray();
}
/**
* Sets the contents to the given array of elements
*
* @param newContents new contents of this set
*/
public void set(Object[] newContents) {
Assert.isNotNull(newContents);
data.clear();
for (int i = 0; i < newContents.length; i++) {
Object object = newContents[i];
data.add(object);
}
IConcurrentModelListener[] listeners = getListeners();
for (int i = 0; i < listeners.length; i++) {
IConcurrentModelListener listener = listeners[i];
listener.setContents(newContents);
}
}
/**
* Empties the set
*/
public void clear() {
Object[] removed = data.toArray();
data.clear();
fireRemove(removed);
}
/**
* Adds the given elements to the set
*
* @param toAdd elements to add
*/
public void addAll(Object[] toAdd) {
Assert.isNotNull(toAdd);
for (int i = 0; i < toAdd.length; i++) {
Object object = toAdd[i];
data.add(object);
}
fireAdd(toAdd);
}
/**
* Adds the given elements to the set. Duplicate elements are ignored.
*
* @param toAdd elements to add
*/
public void addAll(Collection toAdd) {
Assert.isNotNull(toAdd);
addAll(toAdd.toArray());
}
/**
* Fires a change notification for all elements in the given array
*
* @param changed array of elements that have changed
*/
public void changeAll(Object[] changed) {
Assert.isNotNull(changed);
fireUpdate(changed);
}
/**
* Removes all of the given elements from the set.
*
* @param toRemove elements to remove
*/
public void removeAll(Object[] toRemove) {
Assert.isNotNull(toRemove);
for (int i = 0; i < toRemove.length; i++) {
Object object = toRemove[i];
data.remove(object);
}
fireRemove(toRemove);
}
@Override
public void requestUpdate(IConcurrentModelListener listener) {
Assert.isNotNull(listener);
listener.setContents(getElements());
}
}
|
