blob: 5fa3fe8629ca8c5df01a0c71a280b71c9831256a (
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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*******************************************************************************
* Copyright (C) 2011, 2013 Jens Baumgart <jens.baumgart@sap.com> 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
*******************************************************************************/
package org.eclipse.egit.core.internal.indexdiff;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.egit.core.Activator;
import org.eclipse.egit.core.JobFamilies;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.jgit.lib.IndexDiff;
import org.eclipse.jgit.lib.Repository;
/**
* This class provides access to a cached {@link IndexDiff} for a given
* repository
*/
public class IndexDiffCache {
private Map<Repository, IndexDiffCacheEntry> entries = new HashMap<Repository, IndexDiffCacheEntry>();
private Set<IndexDiffChangedListener> listeners = new HashSet<IndexDiffChangedListener>();
private IndexDiffChangedListener globalListener;
/**
* constructor
*/
public IndexDiffCache() {
createGlobalListener();
}
/**
* @param repository
* @return cache entry
*/
@Nullable
public IndexDiffCacheEntry getIndexDiffCacheEntry(@NonNull Repository repository) {
IndexDiffCacheEntry entry;
synchronized (entries) {
entry = entries.get(repository);
if (entry != null)
return entry;
if (repository.isBare())
return null;
entry = new IndexDiffCacheEntry(repository);
entries.put(repository, entry);
}
entry.addIndexDiffChangedListener(globalListener);
return entry;
}
/**
* Adds a listener for IndexDiff changes. Note that only caches are
* available for those repositories for which getIndexDiffCacheEntry was
* called.
*
* @param listener
*/
public void addIndexDiffChangedListener(IndexDiffChangedListener listener) {
synchronized (listeners) {
listeners.add(listener);
}
}
/**
* @param listener
*/
public void removeIndexDiffChangedListener(IndexDiffChangedListener listener) {
synchronized (listeners) {
listeners.remove(listener);
}
}
private void createGlobalListener() {
globalListener = new IndexDiffChangedListener() {
public void indexDiffChanged(Repository repository,
IndexDiffData indexDiffData) {
notifyListeners(repository, indexDiffData);
}
};
}
private void notifyListeners(Repository repository,
IndexDiffData indexDiffData) {
IndexDiffChangedListener[] tmpListeners;
synchronized (listeners) {
tmpListeners = listeners
.toArray(new IndexDiffChangedListener[listeners.size()]);
}
for (int i = 0; i < tmpListeners.length; i++) {
try {
tmpListeners[i].indexDiffChanged(repository, indexDiffData);
} catch (RuntimeException e) {
Activator.logError(
"Exception occured in an IndexDiffChangedListener", e); //$NON-NLS-1$
}
}
}
/**
* Used by {@link Activator}
*/
public void dispose() {
for (IndexDiffCacheEntry entry : entries.values())
entry.dispose();
Job.getJobManager().cancel(JobFamilies.INDEX_DIFF_CACHE_UPDATE);
try {
Job.getJobManager().join(JobFamilies.INDEX_DIFF_CACHE_UPDATE, null);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
|
