blob: c1ef793b44e57f0e3ff4b32a17777026172590e1 (
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
|
/*******************************************************************************
* Copyright (c) 2000, 2016 IBM 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:
* IBM Corporation - initial API and implementation
* Alexander Kurtakov - Bug 460858
*******************************************************************************/
package org.eclipse.help.internal.workingset;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.help.*;
import org.eclipse.help.internal.util.*;
import org.w3c.dom.*;
/**
* Makes help resources adaptable and persistable
*/
public class AdaptableTopic extends AdaptableHelpResource {
/**
* Map of all topics with this topic as ancestor
*/
private Map<String, IHelpResource> topicMap;
/**
* This constructor will be called when wrapping help resources.
*/
public AdaptableTopic(ITopic element) {
super(element);
}
/**
* @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
*/
@Override
@SuppressWarnings("unchecked")
public <T> T getAdapter(Class<T> adapter) {
if (adapter == ITopic.class)
return (T) element;
return super.getAdapter(adapter);
}
@Override
public AdaptableHelpResource[] getChildren() {
ITopic[] topics = this.getSubtopics();
AdaptableHelpResource[] adaptableTopic = new AdaptableTopic[topics.length];
for (int i = 0; i < topics.length; i++) {
adaptableTopic[i] = new AdaptableTopic(topics[i]);
}
return adaptableTopic;
}
/**
* @see org.eclipse.help.ITopic#getSubtopics()
*/
public ITopic[] getSubtopics() {
return ((ITopic) element).getSubtopics();
}
/**
* Returns a topic with the specified href. <br>
* It is possible that multiple tocs have the same href, in which case there
* is no guarantee which one is returned.
*
* @param href
* The topic's href value.
*/
@Override
public ITopic getTopic(String href) {
if (href == null)
return null;
if (topicMap == null) {
// traverse TOC and fill in the topicMap
topicMap = new HashMap<>();
topicMap.put(getHref(), element);
FastStack<ITopic> stack = new FastStack<>();
ITopic[] topics = getSubtopics();
for (int i = 0; i < topics.length; i++)
stack.push(topics[i]);
while (!stack.isEmpty()) {
ITopic topic = stack.pop();
if (topic != null) {
String topicHref = topic.getHref();
if (topicHref != null) {
topicMap.put(topicHref, topic);
}
ITopic[] subtopics = topic.getSubtopics();
for (int i = 0; i < subtopics.length; i++)
stack.push(subtopics[i]);
}
}
}
return (ITopic) topicMap.get(href);
}
@Override
public void saveState(Element element) {
AdaptableToc toc = (AdaptableToc) getParent();
toc.saveState(element);
AdaptableHelpResource[] topics = toc.getChildren();
for (int i = 0; i < topics.length; i++)
if (topics[i] == this)
element.setAttribute("topic", String.valueOf(i)); //$NON-NLS-1$
}
}
|
