blob: 963accbf6ad10a8edcb8a28391112da9f64fd1a0 (
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
126
127
128
129
130
131
|
/*******************************************************************************
* Copyright (c) 2016 Red Hat Inc. 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:
* - Mickael Istria (Red Hat Inc.)
*******************************************************************************/
package org.eclipse.ui.internal.genericeditor;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
/**
* A content assist processor that delegates all content assist
* operations to children provided in constructor and aggregates
* the results.
*
* @since 1.0
*/
public class CompositeContentAssistProcessor implements IContentAssistProcessor {
private List<IContentAssistProcessor> fContentAssistProcessors;
/**
* Constructor
* @param contentAssistProcessors the children that will actually populate the output
* of this content assist processor.
*/
public CompositeContentAssistProcessor(List<IContentAssistProcessor> contentAssistProcessors) {
fContentAssistProcessors= contentAssistProcessors;
}
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
List<ICompletionProposal> res = new ArrayList<>();
for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
ICompletionProposal[] proposals = processor.computeCompletionProposals(viewer, offset);
if (proposals != null) {
res.addAll(Arrays.asList(proposals));
}
}
return res.toArray(new ICompletionProposal[res.size()]);
}
@Override
public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
List<IContextInformation> res = new ArrayList<>();
for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
IContextInformation[] contextInformation = processor.computeContextInformation(viewer, offset);
if (contextInformation != null) {
res.addAll(Arrays.asList(contextInformation));
}
}
return res.toArray(new IContextInformation[res.size()]);
}
@Override
public char[] getCompletionProposalAutoActivationCharacters() {
Set<Character> res = new HashSet<>();
for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
char[] chars = processor.getCompletionProposalAutoActivationCharacters();
if (chars != null) {
for (char c : chars) {
res.add(Character.valueOf(c));
}
}
}
return toCharArray(res);
}
private static char[] toCharArray(Set<Character> chars) {
char[] res = new char[chars.size()];
int i = 0;
for (Character c : chars) {
res[i] = c.charValue();
i++;
}
return res;
}
@Override
public char[] getContextInformationAutoActivationCharacters() {
Set<Character> res = new HashSet<>();
for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
char[] chars = processor.getContextInformationAutoActivationCharacters();
if (chars != null) {
for (char c : chars) {
res.add(Character.valueOf(c));
}
}
}
return toCharArray(res);
}
@Override
public String getErrorMessage() {
StringBuilder res = new StringBuilder();
for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
String errorMessage = processor.getErrorMessage();
if (errorMessage != null) {
res.append(errorMessage);
res.append('\n');
}
}
if (res.length() == 0) {
return null;
}
return res.toString();
}
@Override
public IContextInformationValidator getContextInformationValidator() {
return null;
}
}
|
