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
|
/*******************************************************************************
* Copyright (c) 2014 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.debug.test;
import java.util.ArrayList;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelChangedListener;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDeltaVisitor;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxy;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ITreeModelViewer;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.contexts.AbstractDebugContextProvider;
import org.eclipse.debug.ui.contexts.DebugContextEvent;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
/**
* Copied from org.eclipse.debug.internal.ui.views.launch.LaunchView class.
*
* This debug context provider emulates the Debug view debug context
* provider behavior.
*/
@SuppressWarnings("restriction")
public class TestDebugContextProvider extends AbstractDebugContextProvider implements IModelChangedListener, ISelectionChangedListener{
private IWorkbenchWindow fWindow = null;
private ISelection fContext = null;
private ITreeModelViewer fViewer = null;
private Visitor fVisitor = new Visitor();
class Visitor implements IModelDeltaVisitor {
public boolean visit(IModelDelta delta, int depth) {
if ((delta.getFlags() & (IModelDelta.STATE | IModelDelta.CONTENT)) > 0) {
// state and/or content change
if ((delta.getFlags() & IModelDelta.SELECT) == 0) {
// no select flag
if ((delta.getFlags() & IModelDelta.CONTENT) > 0) {
// content has changed without select >> possible re-activation
possibleChange(getViewerTreePath(delta), DebugContextEvent.ACTIVATED);
} else if ((delta.getFlags() & IModelDelta.STATE) > 0) {
// state has changed without select >> possible state change of active context
possibleChange(getViewerTreePath(delta), DebugContextEvent.STATE);
}
}
}
return true;
}
}
/**
* Returns a tree path for the node, *not* including the root element.
*
* @param node
* model delta
* @return corresponding tree path
*/
private TreePath getViewerTreePath(IModelDelta node) {
ArrayList<Object> list = new ArrayList<Object>();
IModelDelta parentDelta = node.getParentDelta();
while (parentDelta != null) {
list.add(0, node.getElement());
node = parentDelta;
parentDelta = node.getParentDelta();
}
return new TreePath(list.toArray());
}
public TestDebugContextProvider(ITreeModelViewer viewer) {
super(null);
fViewer = viewer;
fViewer.addModelChangedListener(this);
fViewer.addSelectionChangedListener(this);
fWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (fWindow != null) {
DebugUITools.getDebugContextManager().getContextService(fWindow).addDebugContextProvider(this);
}
}
protected void dispose() {
if (fWindow != null) {
DebugUITools.getDebugContextManager().getContextService(fWindow).removeDebugContextProvider(this);
}
fContext = null;
fViewer.removeModelChangedListener(this);
fViewer.removeSelectionChangedListener(this);
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.contexts.IDebugContextProvider#getActiveContext()
*/
public synchronized ISelection getActiveContext() {
return fContext;
}
protected void activate(ISelection selection) {
synchronized (this) {
fContext = selection;
}
fire(new DebugContextEvent(this, selection, DebugContextEvent.ACTIVATED));
}
protected void possibleChange(TreePath element, int type) {
DebugContextEvent event = null;
synchronized (this) {
if (fContext instanceof ITreeSelection) {
ITreeSelection ss = (ITreeSelection) fContext;
if (ss.size() == 1) {
TreePath current = ss.getPaths()[0];
if (current.startsWith(element, null)) {
if (current.getSegmentCount() == element.getSegmentCount()) {
event = new DebugContextEvent(this, fContext, type);
} else {
// if parent of the currently selected element
// changes, issue event to update STATE only
event = new DebugContextEvent(this, fContext, DebugContextEvent.STATE);
}
}
}
}
}
if (event == null) {
return;
}
if (Display.getDefault().getThread() == Thread.currentThread()) {
fire(event);
} else {
final DebugContextEvent finalEvent = event;
Display.getDefault().asyncExec(new Runnable() {
public void run() {
// verify selection is still the same context since job was scheduled
synchronized (TestDebugContextProvider.this) {
if (fContext instanceof IStructuredSelection) {
IStructuredSelection ss = (IStructuredSelection) fContext;
Object changed = ((IStructuredSelection)finalEvent.getContext()).getFirstElement();
if (!(ss.size() == 1 && ss.getFirstElement().equals(changed))) {
return;
}
}
}
fire(finalEvent);
}
});
}
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IModelChangedListener#modelChanged(org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta)
*/
public void modelChanged(IModelDelta delta, IModelProxy proxy) {
delta.accept(fVisitor);
}
public void selectionChanged(SelectionChangedEvent event) {
activate(event.getSelection());
}
}
|
