|
1
11 package org.eclipse.ui.texteditor.spelling;
12
13 import java.util.ArrayList  ;
14 import java.util.Arrays ;
15 import java.util.Iterator ;
16 import java.util.List ;
17
18 import org.eclipse.jface.text.Position;
19 import org.eclipse.jface.text.contentassist.ICompletionProposal;
20 import org.eclipse.jface.text.quickassist.IQuickAssistInvocationContext;
21 import org.eclipse.jface.text.quickassist.IQuickAssistProcessor;
22 import org.eclipse.jface.text.source.Annotation;
23 import org.eclipse.jface.text.source.IAnnotationModel;
24 import org.eclipse.jface.text.source.ISourceViewer;
25 import org.eclipse.jface.text.source.TextInvocationContext;
26
27 import org.eclipse.ui.internal.texteditor.spelling.NoCompletionsProposal;
28
29
30
36 public final class SpellingCorrectionProcessor implements IQuickAssistProcessor {
37
38
39 private static final ICompletionProposal[] fgNoSuggestionsProposal= new ICompletionProposal[] { new NoCompletionsProposal() };
40
41
42
45 public ICompletionProposal[] computeQuickAssistProposals(IQuickAssistInvocationContext quickAssistContext) {
46 ISourceViewer viewer= quickAssistContext.getSourceViewer();
47 int documentOffset= quickAssistContext.getOffset();
48
49 int length= viewer != null ? viewer.getSelectedRange().y : 0;
50 TextInvocationContext context= new TextInvocationContext(viewer, documentOffset, length);
51
52
53 IAnnotationModel model= viewer.getAnnotationModel();
54 if (model == null)
55 return fgNoSuggestionsProposal;
56
57 List proposals= computeProposals(context, model);
58 if (proposals.isEmpty())
59 return fgNoSuggestionsProposal;
60
61 return (ICompletionProposal[]) proposals.toArray(new ICompletionProposal[proposals.size()]);
62 }
63
64 private boolean isAtPosition(int offset, Position pos) {
65 return (pos != null) && (offset >= pos.getOffset() && offset <= (pos.getOffset() + pos.getLength()));
66 }
67
68 private List computeProposals(IQuickAssistInvocationContext context, IAnnotationModel model) {
69 int offset= context.getOffset();
70 ArrayList annotationList= new ArrayList ();
71 Iterator iter= model.getAnnotationIterator();
72 while (iter.hasNext()) {
73 Annotation annotation= (Annotation)iter.next();
74 if (canFix(annotation)) {
75 Position pos= model.getPosition(annotation);
76 if (isAtPosition(offset, pos)) {
77 collectSpellingProblems(annotation, pos, annotationList);
78 }
79 }
80 }
81 SpellingProblem[] spellingProblems= (SpellingProblem[]) annotationList.toArray(new SpellingProblem[annotationList.size()]);
82 return computeProposals(context, spellingProblems);
83 }
84
85 private void collectSpellingProblems(Annotation annotation, Position pos, List problems) {
86 if (annotation instanceof SpellingAnnotation)
87 problems.add(((SpellingAnnotation)annotation).getSpellingProblem());
88 }
89
90 private List computeProposals(IQuickAssistInvocationContext context, SpellingProblem[] spellingProblems) {
91 List proposals= new ArrayList ();
92 for (int i= 0; i < spellingProblems.length; i++)
93 proposals.addAll(Arrays.asList(spellingProblems[i].getProposals()));
94
95 return proposals;
96 }
97
98
101 public String getErrorMessage() {
102 return null;
103 }
104
105
108 public boolean canFix(Annotation annotation) {
109 return annotation instanceof SpellingAnnotation && !annotation.isMarkedDeleted();
110 }
111
112
115 public boolean canAssist(IQuickAssistInvocationContext invocationContext) {
116 return false;
117 }
118
119 }
120 |
Popular Tags |
Java API By Example, From Geeks To Geeks.