| /******************************************************************************* |
| * Copyright (c) 2007 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.wst.sse.ui.internal.correction; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.jface.text.Position; |
| import org.eclipse.jface.text.contentassist.ICompletionProposal; |
| import org.eclipse.jface.text.quickassist.IQuickAssistInvocationContext; |
| import org.eclipse.jface.text.quickassist.IQuickAssistProcessor; |
| import org.eclipse.jface.text.source.Annotation; |
| import org.eclipse.jface.text.source.IAnnotationModel; |
| import org.eclipse.jface.text.source.ISourceViewer; |
| import org.eclipse.jface.text.source.TextInvocationContext; |
| import org.eclipse.wst.sse.ui.internal.reconcile.TemporaryAnnotation; |
| |
| /** |
| * This quick assist processor will provide quick fixes for source validation |
| * errors (Temporary Annotation) |
| */ |
| public class SourceValidationQuickAssistProcessor implements IQuickAssistProcessor { |
| public boolean canAssist(IQuickAssistInvocationContext invocationContext) { |
| return false; |
| } |
| |
| public boolean canFix(Annotation annotation) { |
| if (annotation instanceof TemporaryAnnotation) { |
| Object fixInfo = ((TemporaryAnnotation) annotation).getAdditionalFixInfo(); |
| if (fixInfo instanceof IQuickAssistProcessor) { |
| return ((IQuickAssistProcessor) fixInfo).canFix(annotation); |
| } |
| } |
| return false; |
| } |
| |
| public ICompletionProposal[] computeQuickAssistProposals(IQuickAssistInvocationContext quickAssistContext) { |
| ISourceViewer viewer = quickAssistContext.getSourceViewer(); |
| int documentOffset = quickAssistContext.getOffset(); |
| |
| int length = viewer != null ? viewer.getSelectedRange().y : 0; |
| TextInvocationContext context = new TextInvocationContext(viewer, documentOffset, length); |
| |
| |
| IAnnotationModel model = viewer.getAnnotationModel(); |
| if (model == null) |
| return null; |
| |
| List proposals = computeProposals(context, model); |
| if (proposals.isEmpty()) |
| return null; |
| |
| return (ICompletionProposal[]) proposals.toArray(new ICompletionProposal[proposals.size()]); |
| } |
| |
| private boolean isAtPosition(int offset, Position pos) { |
| return (pos != null) && (offset >= pos.getOffset() && offset <= (pos.getOffset() + pos.getLength())); |
| } |
| |
| private List computeProposals(IQuickAssistInvocationContext context, IAnnotationModel model) { |
| int offset = context.getOffset(); |
| ArrayList proposalsList = new ArrayList(); |
| Iterator iter = model.getAnnotationIterator(); |
| while (iter.hasNext()) { |
| Annotation annotation = (Annotation) iter.next(); |
| // canFix will verify annotation is instanceof TemporaryAnnotation |
| // so if true, we can assume it is |
| if (canFix(annotation)) { |
| Position pos = model.getPosition(annotation); |
| if (isAtPosition(offset, pos)) { |
| context = new TextInvocationContext(context.getSourceViewer(), pos.getOffset(), pos.getLength()); |
| collectProposals(annotation, context, proposalsList); |
| } |
| } |
| } |
| return proposalsList; |
| } |
| |
| private void collectProposals(Annotation annotation, IQuickAssistInvocationContext invocationContext, List proposalsList) { |
| TemporaryAnnotation temporaryAnno = (TemporaryAnnotation) annotation; |
| Object fixInfo = temporaryAnno.getAdditionalFixInfo(); |
| if (fixInfo instanceof IQuickAssistProcessor) { |
| ICompletionProposal[] proposals = ((IQuickAssistProcessor) fixInfo).computeQuickAssistProposals(invocationContext); |
| if (proposals != null && proposals.length > 0) { |
| proposalsList.addAll(Arrays.asList(proposals)); |
| } |
| } |
| } |
| |
| |
| public String getErrorMessage() { |
| return null; |
| } |
| |
| } |