| /******************************************************************************* |
| * Copyright (c) 2000, 2017 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.text.java.hover; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IMarker; |
| import org.eclipse.core.resources.IResource; |
| |
| 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; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.compiler.IProblem; |
| |
| import org.eclipse.jdt.ui.JavaUI; |
| import org.eclipse.jdt.ui.SharedASTProvider; |
| import org.eclipse.jdt.ui.text.java.CompletionProposalComparator; |
| import org.eclipse.jdt.ui.text.java.IInvocationContext; |
| import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal; |
| import org.eclipse.jdt.ui.text.java.IProblemLocation; |
| |
| import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility; |
| import org.eclipse.jdt.internal.ui.javaeditor.IJavaAnnotation; |
| import org.eclipse.jdt.internal.ui.text.correction.AssistContext; |
| import org.eclipse.jdt.internal.ui.text.correction.JavaCorrectionProcessor; |
| import org.eclipse.jdt.internal.ui.text.correction.ProblemLocation; |
| |
| |
| /** |
| * This annotation hover shows the description of the |
| * selected java annotation. |
| * |
| * XXX: Currently this problem hover only works for Java and spelling problems, |
| * see https://bugs.eclipse.org/bugs/show_bug.cgi?id=62081 |
| * |
| * @since 3.0 |
| */ |
| 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.jdt.internal.ui.text.java.hover.AbstractAnnotationHover.AnnotationInfo#getCompletionProposals() |
| */ |
| @Override |
| public ICompletionProposal[] getCompletionProposals() { |
| if (annotation instanceof IJavaAnnotation) { |
| ICompletionProposal[] result= getJavaAnnotationFixes((IJavaAnnotation) annotation); |
| if (result.length > 0) |
| return result; |
| } |
| |
| if (annotation instanceof MarkerAnnotation) |
| return getMarkerAnnotationFixes((MarkerAnnotation) annotation); |
| |
| return NO_PROPOSALS; |
| } |
| |
| private ICompletionProposal[] getJavaAnnotationFixes(IJavaAnnotation javaAnnotation) { |
| ProblemLocation location= new ProblemLocation(position.getOffset(), position.getLength(), javaAnnotation); |
| ICompilationUnit cu= javaAnnotation.getCompilationUnit(); |
| if (cu == null) |
| return NO_PROPOSALS; |
| |
| ISourceViewer sourceViewer= null; |
| if (viewer instanceof ISourceViewer) |
| sourceViewer= (ISourceViewer) viewer; |
| |
| IInvocationContext context= new AssistContext(cu, sourceViewer, location.getOffset(), location.getLength(), SharedASTProvider.WAIT_ACTIVE_ONLY); |
| if (!SpellingAnnotation.TYPE.equals(javaAnnotation.getType()) && !hasProblem(context.getASTRoot().getProblems(), location)) |
| return NO_PROPOSALS; |
| |
| ArrayList<IJavaCompletionProposal> proposals= new ArrayList<>(); |
| JavaCorrectionProcessor.collectCorrections(context, new IProblemLocation[] { location }, proposals); |
| Collections.sort(proposals, new CompletionProposalComparator()); |
| |
| return proposals.toArray(new ICompletionProposal[proposals.size()]); |
| } |
| |
| private static boolean hasProblem(IProblem[] problems, IProblemLocation location) { |
| for (int i= 0; i < problems.length; i++) { |
| IProblem problem= problems[i]; |
| if (problem.getID() == location.getProblemId() && problem.getSourceStart() == location.getOffset()) |
| return true; |
| } |
| return false; |
| } |
| |
| private ICompletionProposal[] getMarkerAnnotationFixes(MarkerAnnotation markerAnnotation) { |
| if (markerAnnotation.isQuickFixableStateSet() && !markerAnnotation.isQuickFixable()) |
| return NO_PROPOSALS; |
| |
| IMarker marker= markerAnnotation.getMarker(); |
| |
| ICompilationUnit cu= getCompilationUnit(marker); |
| if (cu == null) |
| return NO_PROPOSALS; |
| |
| IEditorInput input= EditorUtility.getEditorInput(cu); |
| if (input == null) |
| return NO_PROPOSALS; |
| |
| IAnnotationModel model= JavaUI.getDocumentProvider().getAnnotationModel(input); |
| if (model == null) |
| return NO_PROPOSALS; |
| |
| ISourceViewer sourceViewer= null; |
| if (viewer instanceof ISourceViewer) |
| sourceViewer= (ISourceViewer) viewer; |
| |
| AssistContext context= new AssistContext(cu, sourceViewer, position.getOffset(), position.getLength()); |
| |
| ArrayList<IJavaCompletionProposal> proposals= new ArrayList<>(); |
| JavaCorrectionProcessor.collectProposals(context, model, new Annotation[] { markerAnnotation }, true, false, proposals); |
| Collections.sort(proposals, new CompletionProposalComparator()); |
| |
| return proposals.toArray(new ICompletionProposal[proposals.size()]); |
| } |
| |
| private static ICompilationUnit getCompilationUnit(IMarker marker) { |
| IResource res= marker.getResource(); |
| if (res instanceof IFile && res.isAccessible()) { |
| IJavaElement element= JavaCore.create((IFile) res); |
| if (element instanceof ICompilationUnit) |
| return (ICompilationUnit) element; |
| } |
| return null; |
| } |
| |
| } |
| |
| public ProblemHover() { |
| super(false); |
| } |
| |
| @Override |
| protected AnnotationInfo createAnnotationInfo(Annotation annotation, Position position, ITextViewer textViewer) { |
| return new ProblemInfo(annotation, position, textViewer); |
| } |
| } |