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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/***************************************************************************
* Copyright (c) 2007, 2016 Conselleria de Infraestructuras y Transporte, Generalitat de la Comunitat Valenciana, CEA, Christian W. Damus, 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: Mario Cervera Ubeda (Prodevelop)
* Christian W. Damus (CEA) - bug 430701
* Christian W. Damus - bug 485220
*
******************************************************************************/
package org.eclipse.papyrus.infra.emf.gmf.command;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.workspace.util.WorkspaceSynchronizer;
import org.eclipse.gmf.runtime.common.core.command.AbstractCommand;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
/**
* A GMF Command that wraps an EMF command. Each method is redirected to the EMF one.
*/
public class EMFtoGMFCommandWrapper extends AbstractCommand implements ICommandWrapper<Command> {
private static Function<Command, ICommand> wrapperFunction = EMFtoGMFCommandWrapper::new;
private static Function<Command, ICommand> ndWrapperFunction = NonDirtying::new;
/**
* The wrapped EMF Command. Package-level visibility so that the command stack wrapper can
* access the field.
*/
protected Command emfCommand;
/**
* This variable is used to avoid reentrant call in canUndo/undo/redo
*
* @see https://bugs.eclipse.org/bugs/show_bug.cgi?id=389382
*/
protected boolean isBusy;
/**
* Constructor.
*
* @param emfCommand
* the emf command
*/
public EMFtoGMFCommandWrapper(Command emfCommand) {
super(emfCommand.getLabel());
this.emfCommand = emfCommand;
}
/**
* Wraps the given {@code command}, accounting for possible non-dirty state.
*
* @param command
* a command to wrap
* @return the best wrapper for the {@code command}
*/
public static ICommand wrap(Command command) {
if (command instanceof org.eclipse.emf.common.command.AbstractCommand.NonDirtying) {
return ndWrapperFunction.apply(command);
}
return wrapperFunction.apply(command);
}
/**
* Returns the wrapped EMF command.
*
* @return the EMF command
*/
public Command getEMFCommand() {
return emfCommand;
}
@Override
public Command getWrappedCommand() {
return getEMFCommand();
}
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
emfCommand.execute();
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doRedoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
if (!isBusy) {
isBusy = true;
emfCommand.redo();
isBusy = false;
}
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doUndoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
if (!isBusy) {
isBusy = true;
emfCommand.undo();
isBusy = false;
}
return CommandResult.newOKCommandResult();
}
@Override
public boolean canExecute() {
return emfCommand.canExecute();
}
@Override
public void dispose() {
emfCommand.dispose();
}
@Override
public boolean canUndo() {
if (!isBusy) {
isBusy = true;
boolean res = emfCommand.canUndo();
isBusy = false;
return res;
} else {
return true;
}
}
@Override
public List getAffectedFiles() {
ArrayList affectedFiles = new ArrayList();
Collection<?> affectedObjects = emfCommand.getAffectedObjects();
if (affectedObjects != null) {
for (Object o : affectedObjects) {
if (o instanceof EObject) {
o = ((EObject) o).eResource();
}
if (o instanceof Resource) {
o = WorkspaceSynchronizer.getFile((Resource) o);
}
if (o instanceof IFile) {
affectedFiles.add(o);
}
}
}
return affectedFiles;
}
@Override
public CommandResult getCommandResult() {
Collection<?> res = emfCommand.getResult();
if (res != null && !res.isEmpty()) {
if (res.size() == 1) {
return CommandResult.newOKCommandResult(res.iterator().next());
}
return CommandResult.newOKCommandResult(res);
}
return CommandResult.newOKCommandResult();
}
protected static void setWrapperFunction(Function<Command, ICommand> wrapperFunction) {
EMFtoGMFCommandWrapper.wrapperFunction = wrapperFunction;
}
protected static void setNonDirtyingWrapperFunction(Function<Command, ICommand> wrapperFunction) {
EMFtoGMFCommandWrapper.ndWrapperFunction = wrapperFunction;
}
//
// Nested types
//
/**
* A non-dirtying wrapper for non-dirtying commands.
*/
public static class NonDirtying extends EMFtoGMFCommandWrapper implements INonDirtying {
public NonDirtying(org.eclipse.emf.common.command.Command command) {
super(command);
if (!(command instanceof org.eclipse.emf.common.command.AbstractCommand.NonDirtying)) {
throw new IllegalArgumentException("Wrapped command is not non-dirtying"); //$NON-NLS-1$
}
}
}
}
|
