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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/*******************************************************************************
* Copyright (c) 2000, 2007 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
* Anton Leherbauer (Wind River Systems)
* Bryan Wilkinson (QNX)
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.contentassist;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.InvalidRegistryObjectException;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.ui.IEditorPart;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.ui.text.ICCompletionProposal;
import org.eclipse.cdt.ui.text.contentassist.ContentAssistInvocationContext;
import org.eclipse.cdt.ui.text.contentassist.IProposalFilter;
import org.eclipse.cdt.internal.ui.preferences.ProposalFilterPreferencesUtil;
import org.eclipse.cdt.internal.ui.text.CParameterListValidator;
/**
* C/C++ content assist processor.
*/
public class CContentAssistProcessor extends ContentAssistProcessor {
/**
* A wrapper for {@link ICompetionProposal}s.
*/
private static class CCompletionProposalWrapper implements ICCompletionProposal {
private ICompletionProposal fWrappedProposal;
public CCompletionProposalWrapper(ICompletionProposal proposal) {
fWrappedProposal= proposal;
}
/*
* @see org.eclipse.cdt.ui.text.ICCompletionProposal#getIdString()
*/
public String getIdString() {
return fWrappedProposal.getDisplayString();
}
/*
* @see org.eclipse.cdt.ui.text.ICCompletionProposal#getRelevance()
*/
public int getRelevance() {
return -1;
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposal#apply(org.eclipse.jface.text.IDocument)
*/
public void apply(IDocument document) {
throw new UnsupportedOperationException();
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposal#getAdditionalProposalInfo()
*/
public String getAdditionalProposalInfo() {
return fWrappedProposal.getAdditionalProposalInfo();
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposal#getContextInformation()
*/
public IContextInformation getContextInformation() {
return fWrappedProposal.getContextInformation();
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposal#getDisplayString()
*/
public String getDisplayString() {
return fWrappedProposal.getDisplayString();
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposal#getImage()
*/
public Image getImage() {
return fWrappedProposal.getImage();
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposal#getSelection(org.eclipse.jface.text.IDocument)
*/
public Point getSelection(IDocument document) {
return fWrappedProposal.getSelection(document);
}
/**
* @return the original proposal
*/
public ICompletionProposal unwrap() {
return fWrappedProposal;
}
}
private static final int IDX_AFTERDASH = 0;
private static final int IDX_AFTERCOLON = 1;
private static final int IDX_AFTEROTHER = 2;
private static final int IDX_ALL = 3;
private IContextInformationValidator fValidator;
private final IEditorPart fEditor;
private char[][] fCompletionAutoActivationCharacters;
private ISourceViewer fViewer;
public CContentAssistProcessor(IEditorPart editor, ISourceViewer viewer, ContentAssistant assistant, String partition) {
super(assistant, partition);
fEditor= editor;
fViewer= viewer;
}
/*
* @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationValidator()
*/
public IContextInformationValidator getContextInformationValidator() {
if (fValidator == null) {
fValidator= new CParameterListValidator();
}
return fValidator;
}
/*
* @see org.eclipse.cdt.internal.ui.text.contentassist.ContentAssistProcessor#filterAndSort(java.util.List, org.eclipse.core.runtime.IProgressMonitor)
*/
protected List filterAndSortProposals(List proposals, IProgressMonitor monitor, ContentAssistInvocationContext context) {
IProposalFilter filter = getCompletionFilter();
ICCompletionProposal[] proposalsInput= new ICCompletionProposal[proposals.size()];
// wrap proposals which are no ICCompletionProposals
int i=0;
for (Iterator iterator = proposals.iterator(); iterator.hasNext(); ) {
ICompletionProposal proposal= (ICompletionProposal) iterator.next();
if (proposal instanceof ICCompletionProposal) {
proposalsInput[i++]= (ICCompletionProposal)proposal;
} else {
proposalsInput[i++]= new CCompletionProposalWrapper(proposal);
}
}
ICCompletionProposal[] proposalsFiltered = filter.filterProposals(proposalsInput);
// unwrap again
ArrayList filteredList= new ArrayList(proposalsFiltered.length);
for (int j= 0; j < proposalsFiltered.length; j++) {
ICCompletionProposal proposal= proposalsFiltered[j];
if (proposal instanceof CCompletionProposalWrapper) {
filteredList.add(((CCompletionProposalWrapper)proposal).unwrap());
} else {
filteredList.add(proposal);
}
}
return filteredList;
}
private IProposalFilter getCompletionFilter() {
IProposalFilter filter = null;
try {
IConfigurationElement filterElement = ProposalFilterPreferencesUtil.getPreferredFilterElement();
if (null != filterElement) {
Object contribObject = filterElement
.createExecutableExtension("class"); //$NON-NLS-1$
if ((contribObject instanceof IProposalFilter)) {
filter = (IProposalFilter) contribObject;
}
}
} catch (InvalidRegistryObjectException e) {
// No action required since we will be using the fail-safe default filter
CUIPlugin.getDefault().log(e);
} catch (CoreException e) {
// No action required since we will be using the fail-safe default filter
CUIPlugin.getDefault().log(e);
}
if (null == filter) {
// fail-safe default implementation
filter = new DefaultProposalFilter();
}
return filter;
}
protected List filterAndSortContextInformation(List contexts,
IProgressMonitor monitor) {
return contexts;
}
/*
* @see org.eclipse.cdt.internal.ui.text.contentassist.ContentAssistProcessor#createContext(org.eclipse.jface.text.ITextViewer, int)
*/
protected ContentAssistInvocationContext createContext(ITextViewer viewer, int offset, boolean isCompletion) {
return new CContentAssistInvocationContext(viewer, offset, fEditor, isCompletion);
}
public void setCompletionProposalAutoActivationCharacters(char[] activationSet) {
if (activationSet == null) {
fCompletionAutoActivationCharacters= null;
}
else {
final int len= activationSet.length;
StringBuffer afterDash= new StringBuffer(len);
StringBuffer afterColon= new StringBuffer(len);
StringBuffer afterOther= new StringBuffer(len);
for (int i = 0; i < activationSet.length; i++) {
final char c = activationSet[i];
switch(c) {
case ':':
afterColon.append(c);
break;
case '>':
afterDash.append(c);
break;
default:
afterDash.append(c);
afterColon.append(c);
afterOther.append(c);
break;
}
}
fCompletionAutoActivationCharacters= new char[4][];
fCompletionAutoActivationCharacters[IDX_AFTERDASH]= afterDash.toString().toCharArray();
fCompletionAutoActivationCharacters[IDX_AFTERCOLON]= afterColon.toString().toCharArray();
fCompletionAutoActivationCharacters[IDX_AFTEROTHER]= afterOther.toString().toCharArray();
fCompletionAutoActivationCharacters[IDX_ALL]= activationSet;
}
}
public char[] getCompletionProposalAutoActivationCharacters() {
if (fCompletionAutoActivationCharacters == null) {
return null;
}
if (fViewer != null) {
char prevChar= 0;
try {
final IDocument doc= fViewer.getDocument();
if (doc != null) {
prevChar= doc.getChar(fViewer.getSelectedRange().x-1);
}
}
catch (BadLocationException e) {
// beginning of document.
}
switch (prevChar) {
case ':':
return fCompletionAutoActivationCharacters[IDX_AFTERCOLON];
case '-':
return fCompletionAutoActivationCharacters[IDX_AFTERDASH];
default:
return fCompletionAutoActivationCharacters[IDX_AFTEROTHER];
}
}
return fCompletionAutoActivationCharacters[IDX_ALL];
}
}
|
