blob: 2da2a6ceb73901b5af78129b03dd1a3c88d4395e (
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
|
/*******************************************************************************
* Copyright (c) 2009, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.core.internal.preferences;
import java.util.*;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.preferences.*;
/**
* This class represents a preference node in the "bundle_defaults" scope. This scope is
* used to represent default values which are set by the bundle in either its preference
* initializer or in a file included with the bundle.
*
* This differs from the regular default scope because it does not contain values set
* by the product preference customization or the command-line.
*
* @since 3.3
*/
public class BundleDefaultPreferences extends EclipsePreferences {
private static Set loadedNodes = Collections.synchronizedSet(new HashSet());
private String qualifier;
private int segmentCount;
private IEclipsePreferences loadLevel;
/*
* Default constructor.
*/
public BundleDefaultPreferences() {
this(null, null);
}
private BundleDefaultPreferences(EclipsePreferences parent, String name) {
super(parent, name);
// cache the segment count
IPath path = new Path(absolutePath());
segmentCount = path.segmentCount();
if (segmentCount < 2)
return;
// cache the qualifier
String scope = path.segment(0);
if (BundleDefaultsScope.SCOPE.equals(scope))
qualifier = path.segment(1);
// cache the location
if (qualifier == null)
return;
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.preferences.EclipsePreferences#getLoadLevel()
*/
@Override
protected IEclipsePreferences getLoadLevel() {
if (loadLevel == null) {
if (qualifier == null)
return null;
// Make it relative to this node rather than navigating to it from the root.
// Walk backwards up the tree starting at this node.
// This is important to avoid a chicken/egg thing on startup.
IEclipsePreferences node = this;
for (int i = 2; i < segmentCount; i++)
node = (IEclipsePreferences) node.parent();
loadLevel = node;
}
return loadLevel;
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.preferences.EclipsePreferences#isAlreadyLoaded(org.eclipse.core.runtime.preferences.IEclipsePreferences)
*/
@Override
protected boolean isAlreadyLoaded(IEclipsePreferences node) {
return loadedNodes.contains(node.name());
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.preferences.EclipsePreferences#loaded()
*/
@Override
protected void loaded() {
loadedNodes.add(name());
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.preferences.EclipsePreferences#load()
*/
@Override
protected void load() {
// ensure that the same node in the "default" scope is loaded so this one is
// initialized properly
String relativePath = DefaultPreferences.getScopeRelativePath(absolutePath());
if (relativePath != null) {
// touch the node to force a load
PreferencesService.getDefault().getRootNode().node(DefaultScope.SCOPE).node(relativePath);
}
}
/* (non-Javadoc)
* @see org.eclipse.core.internal.preferences.EclipsePreferences#internalCreate(org.eclipse.core.internal.preferences.EclipsePreferences, java.lang.String, java.lang.Object)
*/
@Override
protected EclipsePreferences internalCreate(EclipsePreferences nodeParent, String nodeName, Object context) {
return new BundleDefaultPreferences(nodeParent, nodeName);
}
}
|
