blob: 28183752898a3e92ea96111eb6069b950a161ba8 (
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
|
/*****************************************************************************
* Copyright (c) 2012, 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
* Christian W. Damus (CEA) - support adapter instead of custom resource impl for CSS (CDO)
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.css.notation;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.gmf.runtime.notation.EObjectListValueStyle;
import org.eclipse.gmf.runtime.notation.NamedStyle;
import org.eclipse.gmf.runtime.notation.impl.DiagramImpl;
import org.eclipse.papyrus.infra.gmfdiag.css.engine.DiagramCSSEngine;
import org.eclipse.papyrus.infra.gmfdiag.css.engine.ExtendedCSSEngine;
import org.eclipse.papyrus.infra.gmfdiag.css.resource.CSSNotationResource;
import org.eclipse.papyrus.infra.gmfdiag.css.stylesheets.StyleSheet;
/**
* Default implementation for CSSDiagram
*
* @author Camille letavernier
*/
@SuppressWarnings("restriction")
public class CSSDiagramImpl extends DiagramImpl implements CSSDiagram {
protected ExtendedCSSEngine engine;
private Adapter disposeListener;
public ExtendedCSSEngine getEngine() {
if(engine == null) {
engine = new DiagramCSSEngine(getModelEngine(), this);
eResource().eAdapters().add(disposeListener = new DiagramDisposeListener());
}
return engine;
}
private void disposeEngine(Object notifier) {
if(engine != null) {
engine.dispose();
engine = null;
((Resource)notifier).eAdapters().remove(disposeListener);
}
}
protected ExtendedCSSEngine getModelEngine() {
return CSSNotationResource.getEngine(eResource());
}
public List<StyleSheet> getStyleSheets() {
List<StyleSheet> result = new LinkedList<StyleSheet>();
for(Object styleObject : getStyles()) {
if(styleObject instanceof NamedStyle) {
NamedStyle style = (NamedStyle)styleObject;
if(CSSStyles.CSS_DIAGRAM_STYLESHEETS_KEY.equals(style.getName())) {
if(style instanceof EObjectListValueStyle) {
EObjectListValueStyle stylesheetsStyle = (EObjectListValueStyle)style;
for(Object eObjectValue : stylesheetsStyle.getEObjectListValue()) {
if(eObjectValue instanceof StyleSheet) {
result.add((StyleSheet)eObjectValue);
}
}
}
}
}
}
return result;
}
private class DiagramDisposeListener extends AdapterImpl {
@Override
public void notifyChanged(Notification notification) {
switch(notification.getEventType()) {
case Notification.REMOVE:
if(notification.getOldValue() == CSSDiagramImpl.this) {
disposeEngine(notification.getNotifier());
}
break;
case Notification.REMOVE_MANY:
for(Object object : (Collection<?>)notification.getOldValue()) {
if(object == CSSDiagramImpl.this) {
disposeEngine(notification.getNotifier());
}
}
break;
}
}
}
}
|
