blob: a9877fe100d29f73992791d2de26c150b09954e5 (
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
|
/*****************************************************************************
* Copyright (c) 2011 Atos.
*
*
* 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:
* Mathieu Velten (Atos) - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.commands;
import java.util.EventObject;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.commands.operations.IOperationHistory;
import org.eclipse.core.commands.operations.IOperationHistoryListener;
import org.eclipse.core.commands.operations.OperationHistoryEvent;
import org.eclipse.emf.common.command.CommandStackListener;
import org.eclipse.emf.workspace.impl.WorkspaceCommandStackImpl;
public class NotifyingWorkspaceCommandStack extends WorkspaceCommandStackImpl {
/**
* map with registered listeners and the corresponding proxy registered to
* actual map
*/
private Map<CommandStackListener, IOperationHistoryListener> proxyOperationListeners = new HashMap<CommandStackListener, IOperationHistoryListener>();
public NotifyingWorkspaceCommandStack(IOperationHistory history) {
super(history);
}
@Override
public void addCommandStackListener(final CommandStackListener listener) {
removeCommandStackListener(listener);
IOperationHistoryListener proxy = new IOperationHistoryListener() {
public void historyNotification(OperationHistoryEvent event) {
int type = event.getEventType();
// emf stack only needs to be notified when an operation is finished
if(OperationHistoryEvent.DONE == type || OperationHistoryEvent.REDONE == type || OperationHistoryEvent.UNDONE == type) {
listener.commandStackChanged(new EventObject(this));
}
}
};
getOperationHistory().addOperationHistoryListener(proxy);
proxyOperationListeners.put(listener, proxy);
}
@Override
public void removeCommandStackListener(CommandStackListener listener) {
IOperationHistoryListener proxy = proxyOperationListeners.remove(listener);
if(proxy != null) {
getOperationHistory().removeOperationHistoryListener(proxy);
}
}
}
|
