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
205
206
|
/*******************************************************************************
* Copyright (c) 2007, 2011 Intel Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Intel Corporation - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.core.settings.model.util;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.CProjectNature;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
public abstract class ResourceChangeHandlerBase implements IResourceChangeListener {
public interface IResourceMoveHandler {
/**
* Resource moved fromRc to toRc
* @param fromRc
* @param toRc
* @return boolean indicating if children should be visited
*/
boolean handleResourceMove(IResource fromRc, IResource toRc);
/**
* Handle a resource remove
* @param rc Removed IResource
* @return boolean indicating if children should be visited
*/
boolean handleResourceRemove(IResource rc);
/**
* Handle a project close
*/
void handleProjectClose(IProject project);
/**
* Call-back ticked at end of a resource change event
*/
void done();
}
private IWorkspaceRoot fRoot = ResourcesPlugin.getWorkspace().getRoot();
private class DeltaVisitor implements IResourceDeltaVisitor {
// private IResourceDelta fRootDelta;
private Map<IResource, IResource> fMoveMap = new HashMap<>();
private IResourceMoveHandler fHandler;
public DeltaVisitor(IResourceMoveHandler handler, IResourceDelta rootDelta) {
fHandler = handler;
// fRootDelta = rootDelta;
}
private IResource getResource(IPath path, IResource baseResource) {
switch (baseResource.getType()) {
case IResource.FILE:
return fRoot.getFile(path);
case IResource.FOLDER:
return fRoot.getFolder(path);
case IResource.PROJECT:
return fRoot.getProject(path.segment(0));
case IResource.ROOT:
default:
throw new IllegalArgumentException();
}
}
private boolean checkInitHandleResourceMove(IResource fromRc, IResource toRc) {
if (fMoveMap.put(fromRc, toRc) == null) {
return fHandler.handleResourceMove(fromRc, toRc);
}
return true;
}
@Override
public boolean visit(IResourceDelta delta) throws CoreException {
IResource dResource = delta.getResource();
if (dResource.getType() == IResource.PROJECT && !shouldVisit((IProject) dResource))
return false;
boolean resume = true;
boolean removed = false;
switch (delta.getKind()) {
case IResourceDelta.REMOVED:
removed = true;
//$FALL-THROUGH$
case IResourceDelta.CHANGED:
int flags = delta.getFlags();
if ((flags & IResourceDelta.MOVED_TO) != 0) {
IPath path = delta.getMovedToPath();
if (path != null) {
IResource toRc = getResource(path, dResource);
resume = checkInitHandleResourceMove(dResource, toRc);
}
break;
} else if ((flags & IResourceDelta.MOVED_FROM) != 0) {
IPath path = delta.getMovedFromPath();
if (path != null) {
IResource fromRc = getResource(path, dResource);
resume = checkInitHandleResourceMove(fromRc, dResource);
}
break;
} else if (removed) {
resume = fHandler.handleResourceRemove(dResource);
}
break;
default:
break;
}
return resume; // visit the children
}
}
/*
* I R e s o u r c e C h a n g e L i s t e n e r
*/
/* (non-Javadoc)
*
* Handle the renaming and deletion of project resources
* This is necessary in order to update ResourceConfigurations and AdditionalInputs
*
* @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent)
*/
@Override
public void resourceChanged(IResourceChangeEvent event) {
if (event.getSource() instanceof IWorkspace) {
IResourceMoveHandler handler = createResourceMoveHandler(event);
doHandleResourceMove(event, handler);
}
}
protected boolean shouldVisit(IProject project) {
try {
return project.isOpen() ? project.hasNature(CProjectNature.C_NATURE_ID) : true;
} catch (CoreException e) {
CCorePlugin.log(e);
return false;
}
}
/**
* @nooverride This method is not intended to be re-implemented or extended by clients.
* @noreference This method is not intended to be referenced by clients.
*/
protected void doHahdleResourceMove(IResourceChangeEvent event, IResourceMoveHandler handler) {
doHandleResourceMove(event, handler);
}
/**
* @since 5.1
*/
protected void doHandleResourceMove(IResourceChangeEvent event, IResourceMoveHandler handler) {
switch (event.getType()) {
case IResourceChangeEvent.PRE_CLOSE:
IProject project = (IProject) event.getResource();
if (shouldVisit(project))
handler.handleProjectClose(project);
break;
// case IResourceChangeEvent.PRE_DELETE :
// handler.handleResourceRemove(event.getResource());
// break;
case IResourceChangeEvent.POST_CHANGE:
IResourceDelta resDelta = event.getDelta();
if (resDelta == null) {
break;
}
try {
DeltaVisitor rcChecker = new DeltaVisitor(handler, resDelta);
resDelta.accept(rcChecker);
} catch (CoreException e) {
CCorePlugin.log(e);
}
break;
default:
break;
}
handler.done();
}
protected abstract IResourceMoveHandler createResourceMoveHandler(IResourceChangeEvent event);
}
|
