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1
11
12 package org.eclipse.jdt.internal.ui.text.spelling;
13
14 import java.util.ArrayList  ;
15 import java.util.Collections ;
16 import java.util.Iterator ;
17 import java.util.List ;
18
19 import org.eclipse.core.runtime.IProgressMonitor;
20
21
22 import org.eclipse.jface.text.BadLocationException;
23 import org.eclipse.jface.text.DocumentEvent;
24 import org.eclipse.jface.text.IDocument;
25 import org.eclipse.jface.text.IRegion;
26
27 import org.eclipse.jdt.ui.PreferenceConstants;
28 import org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer;
29 import org.eclipse.jdt.ui.text.java.ContentAssistInvocationContext;
30
31 import org.eclipse.jdt.internal.ui.JavaPlugin;
32 import org.eclipse.jdt.internal.ui.JavaPluginImages;
33 import org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposal;
34 import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellCheckEngine;
35 import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellChecker;
36 import org.eclipse.jdt.internal.ui.text.spelling.engine.RankedWordProposal;
37
38
50 public final class WordCompletionProposalComputer implements IJavaCompletionProposalComputer {
51
52
53 private static final int PREFIX_RANK_SHIFT= 500;
54
55
58 public List computeCompletionProposals(ContentAssistInvocationContext context, IProgressMonitor monitor) {
59 if (contributes()) {
60 try {
61 IDocument document= context.getDocument();
62 final int offset= context.getInvocationOffset();
63
64 final IRegion region= document.getLineInformationOfOffset(offset);
65 final String content= document.get(region.getOffset(), region.getLength());
66
67 int index= offset - region.getOffset() - 1;
68 while (index >= 0 && Character.isLetter(content.charAt(index)))
69 index--;
70
71 final int start= region.getOffset() + index + 1;
72 final String candidate= content.substring(index + 1, offset - region.getOffset());
73
74 if (candidate.length() > 0) {
75
76 final ISpellCheckEngine engine= SpellCheckEngine.getInstance();
77 final ISpellChecker checker= engine.getSpellChecker();
78
79 if (checker != null) {
80
81 final List proposals= new ArrayList (checker.getProposals(candidate, Character.isUpperCase(candidate.charAt(0))));
82 final List result= new ArrayList (proposals.size());
83
84 for (Iterator it= proposals.iterator(); it.hasNext();) {
85 RankedWordProposal word= (RankedWordProposal) it.next();
86 String text= word.getText();
87 if (text.startsWith(candidate))
88 word.setRank(word.getRank() + PREFIX_RANK_SHIFT);
89
90 result.add(new JavaCompletionProposal(text, start, candidate.length(), JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_RENAME), text, word.getRank()) {
91
94 public boolean validate(IDocument doc, int validate_offset, DocumentEvent event) {
95 return offset == validate_offset;
96 }
97 });
98 }
99
100 return result;
101 }
102 }
103 } catch (BadLocationException exception) {
104 JavaPlugin.log(exception);
106 }
107 }
108 return Collections.EMPTY_LIST;
109 }
110
111 private boolean contributes() {
112 return PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.SPELLING_ENABLE_CONTENTASSIST);
113 }
114
115
118 public List computeContextInformation(ContentAssistInvocationContext context, IProgressMonitor monitor) {
119 return Collections.EMPTY_LIST;
120 }
121
122
125 public String getErrorMessage() {
126 return null; }
128
129
132 public void sessionStarted() {
133 }
134
135
138 public void sessionEnded() {
139 }
140 }
141 |
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