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
|
/*****************************************************************************
* Copyright (c) 2013 CEA LIST.
*
*
* 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:
* Laurent Wouters laurent.wouters@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.helper;
import java.util.List;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.resource.Resource;
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;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.IEditHelper;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.papyrus.infra.viewpoints.policy.ModelAddData;
import org.eclipse.papyrus.infra.viewpoints.policy.PolicyChecker;
/**
* Represents an Edit Helper for GMF Diagrams
* @author Laurent Wouters
*/
public class DiagramEditHelper implements IEditHelper {
/* (non-Javadoc)
* @see org.eclipse.gmf.runtime.emf.type.core.edithelper.IEditHelper#canEdit(org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest)
*/
public boolean canEdit(IEditCommandRequest req) {
return false;
}
/* (non-Javadoc)
* @see org.eclipse.gmf.runtime.emf.type.core.edithelper.IEditHelper#getEditCommand(org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest)
*/
public ICommand getEditCommand(final IEditCommandRequest req) {
if (req instanceof DestroyElementRequest) {
DestroyElementRequest r = (DestroyElementRequest)req;
return getDestroyDiagramCommand((Diagram)r.getElementToDestroy());
} else if (req instanceof SetRequest) {
SetRequest r = (SetRequest)req;
return GetSimpleSetCommand(r.getElementToEdit(), r.getFeature(), r.getValue());
} else if (req instanceof CreateElementRequest) {
CreateElementRequest r = (CreateElementRequest)req;
EObject container = r.getContainer();
if (container instanceof Diagram)
return getCreateCommand((Diagram)container, r.getContainmentFeature(), r.getElementType());
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.gmf.runtime.emf.type.core.edithelper.IEditHelper#getContainedValues(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EReference)
*/
public List getContainedValues(EObject eContainer, EReference feature) {
throw new UnsupportedOperationException();
}
/**
* Gets the command for destroying the given diagram
* @param diagram The diagram to destroy
* @return The appropriate command
*/
private ICommand getDestroyDiagramCommand(final Diagram diagram) {
final Resource resource = diagram.eResource();
return new AbstractCommand("Destroy diagram") {
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
resource.getContents().remove(diagram);
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doRedoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
resource.getContents().remove(diagram);
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doUndoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
resource.getContents().add(diagram);
return CommandResult.newOKCommandResult();
}
};
}
/**
* Gets the command for setting a property of a view
* @param object The object to modify
* @param feature The feature to modify
* @param newValue The new value for the feature
* @return The appropriate command
*/
private ICommand GetSimpleSetCommand(final EObject object, final EStructuralFeature feature, final Object newValue) {
return new AbstractCommand("Edit property") {
private Object oldValue;
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
oldValue = object.eGet(feature);
object.eSet(feature, newValue);
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doRedoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
object.eSet(feature, newValue);
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doUndoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
object.eSet(feature, oldValue);
return CommandResult.newOKCommandResult();
}
};
}
/**
* Gets the command for the creation of an element in a diagram
* @param diagram The diagram to change
* @param reference The containment feature
* @param type The type of the element to be created
* @return The appropriate command
*/
private ICommand getCreateCommand(final Diagram diagram, final EReference reference, final IElementType type) {
return new AbstractCommand("Create element") {
private EObject newElement;
private ModelAddData data;
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
data = PolicyChecker.getCurrent().getChildAddData(diagram, diagram.getElement().eClass(), type.getEClass());
if (!data.isPermitted())
return CommandResult.newErrorCommandResult("The current active viewpoint policy prevents the addition of this element to the view");
newElement = type.getEClass().getEPackage().getEFactoryInstance().create(type.getEClass());
if (data.isPathDefined()) {
if (!data.execute(diagram.getElement(), newElement))
return CommandResult.newErrorCommandResult("Failed to follow the path");
} else {
diagram.getElement().eSet(reference, newElement);
}
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doRedoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
data.redoExecute();
return CommandResult.newOKCommandResult();
}
@Override
protected CommandResult doUndoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
data.undoExecute();
return CommandResult.newOKCommandResult();
}
};
}
}
|
