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/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.c.hover;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.cdt.core.model.CModelException;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.internal.ui.editor.ICAnnotation;
import org.eclipse.cdt.internal.ui.text.contentassist.CCompletionProposalComparator;
import org.eclipse.cdt.internal.ui.text.correction.CCorrectionProcessor;
import org.eclipse.cdt.internal.ui.text.correction.CorrectionContext;
import org.eclipse.cdt.internal.ui.text.correction.ProblemLocation;
import org.eclipse.cdt.internal.ui.util.EditorUtility;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.ui.text.ICCompletionProposal;
import org.eclipse.cdt.ui.text.IProblemLocation;
import org.eclipse.core.resources.IMarker;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.source.Annotation;
import org.eclipse.jface.text.source.IAnnotationModel;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.texteditor.MarkerAnnotation;
import org.eclipse.ui.texteditor.spelling.SpellingAnnotation;
/**
* This annotation hover shows the description of the
* selected java annotation.
*
* XXX: Currently this problem hover only works for spelling problems.
* see: https://bugs.eclipse.org/bugs/show_bug.cgi?id=62081
*
* @since 5.0
*/
public class ProblemHover extends AbstractAnnotationHover {
protected static class ProblemInfo extends AnnotationInfo {
private static final ICompletionProposal[] NO_PROPOSALS = new ICompletionProposal[0];
public ProblemInfo(Annotation annotation, Position position, ITextViewer textViewer) {
super(annotation, position, textViewer);
}
/*
* @see org.eclipse.cdt.internal.ui.text.java.hover.AbstractAnnotationHover.AnnotationInfo#getCompletionProposals()
*/
@Override
public ICompletionProposal[] getCompletionProposals() {
if (annotation instanceof ICAnnotation) {
return getCAnnotationFixes((ICAnnotation) annotation);
} else if (annotation instanceof MarkerAnnotation) {
return getMarkerAnnotationFixes((MarkerAnnotation) annotation);
}
return NO_PROPOSALS;
}
private ICompletionProposal[] getCAnnotationFixes(ICAnnotation cAnnotation) {
ProblemLocation location = new ProblemLocation(position.getOffset(), position.getLength(), cAnnotation);
ITranslationUnit tu = cAnnotation.getTranslationUnit();
ISourceViewer sourceViewer = null;
if (viewer instanceof ISourceViewer)
sourceViewer = (ISourceViewer) viewer;
CorrectionContext context = new CorrectionContext(tu, sourceViewer, location.getOffset(),
location.getLength());
if (!SpellingAnnotation.TYPE.equals(cAnnotation.getType()))
return NO_PROPOSALS;
List<ICCompletionProposal> proposals = new ArrayList<>();
CCorrectionProcessor.collectCorrections(context, new IProblemLocation[] { location }, proposals);
Collections.sort(proposals, new CCompletionProposalComparator());
return proposals.toArray(new ICompletionProposal[proposals.size()]);
}
private ICompletionProposal[] getMarkerAnnotationFixes(MarkerAnnotation markerAnnotation) {
if (markerAnnotation.isQuickFixableStateSet() && !markerAnnotation.isQuickFixable())
return NO_PROPOSALS;
IMarker marker = markerAnnotation.getMarker();
IEditorInput input = null;
try {
input = EditorUtility.getEditorInput(marker.getResource());
} catch (CModelException e) {
}
if (input == null)
return NO_PROPOSALS;
ITranslationUnit tu = getTranslationUnit(input);
if (tu == null)
return NO_PROPOSALS;
IAnnotationModel model = CUIPlugin.getDefault().getDocumentProvider().getAnnotationModel(input);
if (model == null)
return NO_PROPOSALS;
ISourceViewer sourceViewer = null;
if (viewer instanceof ISourceViewer)
sourceViewer = (ISourceViewer) viewer;
CorrectionContext context = new CorrectionContext(tu, sourceViewer, position.getOffset(),
position.getLength());
List<ICCompletionProposal> proposals = new ArrayList<>();
CCorrectionProcessor.collectProposals(context, model, new Annotation[] { markerAnnotation }, true, false,
proposals);
return proposals.toArray(new ICompletionProposal[proposals.size()]);
}
private static ITranslationUnit getTranslationUnit(IEditorInput input) {
return CUIPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(input);
}
}
public ProblemHover() {
super(false);
}
@Override
protected AnnotationInfo createAnnotationInfo(Annotation annotation, Position position, ITextViewer textViewer) {
return new ProblemInfo(annotation, position, textViewer);
}
}
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