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1
11
12 package org.eclipse.jdt.internal.ui.text.spelling;
13
14 import java.util.ArrayList  ;
15
16 import org.eclipse.core.resources.IFile;
17
18 import org.eclipse.jface.text.BadLocationException;
19 import org.eclipse.jface.text.IDocument;
20 import org.eclipse.jface.text.IRegion;
21 import org.eclipse.jface.text.ITextViewer;
22 import org.eclipse.jface.text.contentassist.ICompletionProposal;
23 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
24 import org.eclipse.jface.text.contentassist.IContextInformation;
25 import org.eclipse.jface.text.contentassist.IContextInformationValidator;
26
27 import org.eclipse.ui.IEditorInput;
28 import org.eclipse.ui.part.FileEditorInput;
29
30 import org.eclipse.jdt.core.ICompilationUnit;
31
32 import org.eclipse.jdt.ui.JavaUI;
33 import org.eclipse.jdt.ui.PreferenceConstants;
34 import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal;
35 import org.eclipse.jdt.ui.text.java.IJavadocCompletionProcessor;
36 import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellCheckEngine;
37 import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellChecker;
38 import org.eclipse.jdt.internal.ui.text.spelling.engine.RankedWordProposal;
39
40 import org.eclipse.jdt.internal.ui.JavaPluginImages;
41 import org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposal;
42
43
48 public class WordCompletionProcessor implements IContentAssistProcessor, IJavadocCompletionProcessor {
49
50
51 protected static final int PREFIX_RANK_SHIFT= 4096;
52
53
54 private String fError= null;
55
56
59 public final IJavaCompletionProposal[] computeCompletionProposals(final ICompilationUnit cu, final int offset, final int length, final int flags) {
60 if (contributes()) {
61 IEditorInput editorInput= new FileEditorInput((IFile) cu.getResource());
62 IDocument document= JavaUI.getDocumentProvider().getDocument(editorInput);
63 return computeCompletionProposals(document, offset);
64 }
65 return null;
66 }
67
68
71 public ICompletionProposal[] computeCompletionProposals(final ITextViewer viewer, final int offset) {
72 if (contributes())
73 return computeCompletionProposals(viewer.getDocument(), offset);
74 return null;
75 }
76
77 private boolean contributes() {
78 return PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.SPELLING_ENABLE_CONTENTASSIST);
79 }
80
81 private IJavaCompletionProposal[] computeCompletionProposals(final IDocument document, final int offset) {
82 IJavaCompletionProposal[] result= null;
83 try {
84
85 final IRegion region= document.getLineInformationOfOffset(offset);
86 final String content= document.get(region.getOffset(), region.getLength());
87
88 int index= offset - region.getOffset() - 1;
89 while (index >= 0 && Character.isLetter(content.charAt(index)))
90 index--;
91
92 final int start= region.getOffset() + index + 1;
93 final String candidate= content.substring(index + 1, offset - region.getOffset());
94
95 if (candidate.length() > 0) {
96
97 final ISpellCheckEngine engine= SpellCheckEngine.getInstance();
98 final ISpellChecker checker= engine.createSpellChecker(engine.getLocale(), PreferenceConstants.getPreferenceStore());
99
100 if (checker != null) {
101
102 final ArrayList proposals= new ArrayList (checker.getProposals(candidate, Character.isUpperCase(candidate.charAt(0))));
103 result= new IJavaCompletionProposal[proposals.size()];
104
105 RankedWordProposal word= null;
106 for (int proposal= 0; proposal < result.length; proposal++) {
107
108 word= (RankedWordProposal)proposals.get(proposal);
109 if (word.getText().startsWith(candidate))
110 word.setRank(word.getRank() + PREFIX_RANK_SHIFT);
111 }
112
113
115 String text= null;
116 for (int proposal= 0; proposal < result.length; proposal++) {
117
118 word= (RankedWordProposal)proposals.get(proposal);
119 text= word.getText();
120
121 result[proposal]= new JavaCompletionProposal(text, start, candidate.length(), JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_RENAME), text, word.getRank());
123 }
124 }
125 }
126 } catch (BadLocationException exception) {
127 fError= (result == null) ? exception.getLocalizedMessage() : null;
128 }
129 return result;
130 }
131
132
135 public final IContextInformation[] computeContextInformation(final ICompilationUnit cu, final int offset) {
136 return null;
137 }
138
139
142 public final IContextInformation[] computeContextInformation(final ITextViewer viewer, final int offset) {
143 return null;
144 }
145
146
149 public final char[] getCompletionProposalAutoActivationCharacters() {
150 return null;
151 }
152
153
156 public final char[] getContextInformationAutoActivationCharacters() {
157 return null;
158 }
159
160
163 public final IContextInformationValidator getContextInformationValidator() {
164 return null;
165 }
166
167
170 public final String getErrorMessage() {
171 return fError;
172 }
173 }
174 |
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