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1
11
12 package org.eclipse.jdt.internal.ui.text.correction;
13
14 import java.util.ArrayList  ;
15 import java.util.Collection ;
16 import java.util.Iterator ;
17
18 import org.eclipse.core.commands.AbstractHandler;
19 import org.eclipse.core.commands.ExecutionEvent;
20 import org.eclipse.core.commands.ExecutionException;
21
22 import org.eclipse.jface.bindings.TriggerSequence;
23 import org.eclipse.jface.viewers.ISelection;
24
25 import org.eclipse.jface.text.BadLocationException;
26 import org.eclipse.jface.text.IDocument;
27 import org.eclipse.jface.text.ITextSelection;
28 import org.eclipse.jface.text.ITextViewer;
29 import org.eclipse.jface.text.contentassist.ICompletionProposal;
30 import org.eclipse.jface.text.contentassist.ICompletionProposalExtension;
31 import org.eclipse.jface.text.contentassist.ICompletionProposalExtension2;
32 import org.eclipse.jface.text.source.Annotation;
33 import org.eclipse.jface.text.source.IAnnotationModel;
34
35 import org.eclipse.ui.PlatformUI;
36 import org.eclipse.ui.keys.IBindingService;
37
38 import org.eclipse.jdt.core.ICompilationUnit;
39 import org.eclipse.jdt.core.dom.ASTNode;
40 import org.eclipse.jdt.core.dom.SimpleName;
41
42 import org.eclipse.jdt.ui.JavaUI;
43 import org.eclipse.jdt.ui.text.java.IInvocationContext;
44
45 import org.eclipse.jdt.internal.ui.actions.ActionUtil;
46 import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor;
47
48
51 public class CorrectionCommandHandler extends AbstractHandler {
52
53 private final JavaEditor fEditor;
54 private final String fId;
55 private final boolean fIsAssist;
56
57 public CorrectionCommandHandler(JavaEditor editor, String id, boolean isAssist) {
58 fEditor= editor;
59 fId= id;
60 fIsAssist= isAssist;
61 }
62
63
66 public Object execute(ExecutionEvent event) throws ExecutionException {
67 ISelection selection= fEditor.getSelectionProvider().getSelection();
68 ICompilationUnit cu= JavaUI.getWorkingCopyManager().getWorkingCopy(fEditor.getEditorInput());
69 IAnnotationModel model= JavaUI.getDocumentProvider().getAnnotationModel(fEditor.getEditorInput());
70 if (selection instanceof ITextSelection && cu != null && model != null) {
71 if (! ActionUtil.isEditable(fEditor)) {
72 return null;
73 }
74 ICompletionProposal proposal= findCorrection(fId, fIsAssist, (ITextSelection) selection, cu, model);
75 if (proposal != null) {
76 invokeProposal(proposal, ((ITextSelection) selection).getOffset());
77 }
78 }
79 return null;
80 }
81
82 private ICompletionProposal findCorrection(String id, boolean isAssist, ITextSelection selection, ICompilationUnit cu, IAnnotationModel model) {
83 AssistContext context= new AssistContext(cu, selection.getOffset(), selection.getLength());
84 Collection proposals= new ArrayList (10);
85 if (isAssist) {
86 if (id.equals(LinkedNamesAssistProposal.ASSIST_ID)) {
87 return getLocalRenameProposal(context); }
89 JavaCorrectionProcessor.collectAssists(context, new ProblemLocation[0], proposals);
90 } else {
91 try {
92 boolean goToClosest= selection.getLength() == 0;
93 Annotation[] annotations= getAnnotations(selection.getOffset(), goToClosest);
94 JavaCorrectionProcessor.collectProposals(context, model, annotations, true, false, proposals);
95 } catch (BadLocationException e) {
96 return null;
97 }
98 }
99 for (Iterator iter= proposals.iterator(); iter.hasNext();) {
100 Object curr= iter.next();
101 if (curr instanceof ICommandAccess) {
102 if (id.equals(((ICommandAccess) curr).getCommandId())) {
103 return (ICompletionProposal) curr;
104 }
105 }
106 }
107 return null;
108 }
109
110 private Annotation[] getAnnotations(int offset, boolean goToClosest) throws BadLocationException {
111 ArrayList resultingAnnotations= new ArrayList ();
112 JavaCorrectionAssistant.collectQuickFixableAnnotations(fEditor, offset, goToClosest, resultingAnnotations);
113 return (Annotation[]) resultingAnnotations.toArray(new Annotation[resultingAnnotations.size()]);
114 }
115
116 private ICompletionProposal getLocalRenameProposal(IInvocationContext context) {
117 ASTNode node= context.getCoveringNode();
118 if (node instanceof SimpleName) {
119 return new LinkedNamesAssistProposal(context.getCompilationUnit(), (SimpleName) node);
120 }
121 return null;
122 }
123
124 private IDocument getDocument() {
125 return JavaUI.getDocumentProvider().getDocument(fEditor.getEditorInput());
126 }
127
128
129 private void invokeProposal(ICompletionProposal proposal, int offset) {
130 if (proposal instanceof ICompletionProposalExtension2) {
131 ITextViewer viewer= fEditor.getViewer();
132 if (viewer != null) {
133 ((ICompletionProposalExtension2) proposal).apply(viewer, (char) 0, 0, offset);
134 return;
135 }
136 } else if (proposal instanceof ICompletionProposalExtension) {
137 IDocument document= getDocument();
138 if (document != null) {
139 ((ICompletionProposalExtension) proposal).apply(document, (char) 0, offset);
140 return;
141 }
142 }
143 IDocument document= getDocument();
144 if (document != null) {
145 proposal.apply(document);
146 }
147 }
148
149 public static String getShortCutString(String proposalId) {
150 if (proposalId != null) {
151 IBindingService bindingService= (IBindingService) PlatformUI.getWorkbench().getAdapter(IBindingService.class);
152 if (bindingService != null) {
153 TriggerSequence[] activeBindingsFor= bindingService.getActiveBindingsFor(proposalId);
154 if (activeBindingsFor.length > 0) {
155 return activeBindingsFor[0].format();
156 }
157 }
158 }
159 return null;
160 }
161
162 }
163 |
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