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/*******************************************************************************
* Copyright (c) 2017 Red Hat Inc. 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:
* - Mickael Istria (Red Hat Inc.)
*******************************************************************************/
package org.eclipse.ui.genericeditor.examples.dotproject;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.filebuffers.ITextFileBufferManager;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.text.DocumentEvent;
import org.eclipse.jface.text.IDocumentListener;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.source.IAnnotationModel;
import org.eclipse.jface.text.source.IAnnotationModelExtension;
import org.eclipse.ui.editors.text.EditorsUI;
import org.eclipse.ui.texteditor.spelling.ISpellingProblemCollector;
import org.eclipse.ui.texteditor.spelling.SpellingAnnotation;
import org.eclipse.ui.texteditor.spelling.SpellingContext;
import org.eclipse.ui.texteditor.spelling.SpellingProblem;
import org.eclipse.ui.texteditor.spelling.SpellingService;
public class SpellCheckDocumentListener implements IDocumentListener {
Job lastJob = null;
SpellingService service = EditorsUI.getSpellingService();
@Override
public void documentAboutToBeChanged(DocumentEvent event) {
}
@Override
public void documentChanged(final DocumentEvent event) {
if (this.lastJob != null) {
this.lastJob.cancel();
}
this.lastJob = new Job("Spellcheck") {
@Override
protected IStatus run(IProgressMonitor monitor) {
IAnnotationModel model = ITextFileBufferManager.DEFAULT.getTextFileBuffer(event.getDocument()).getAnnotationModel();
String text = event.getDocument().get();
int commentStart = text.indexOf("<comment>");
if (commentStart < 0) {
return Status.OK_STATUS;
}
commentStart += "<comment>".length();
int commentEnd = text.indexOf("</comment>", commentStart);
if (commentEnd <= commentStart) {
return Status.OK_STATUS;
}
Region region = new Region(commentStart, commentEnd - commentStart);
service.check(event.getDocument(), new Region[] { region }, new SpellingContext(), new ISpellingProblemCollector() {
private Map<SpellingAnnotation, Position> annotations = new HashMap<>();
@Override
public void endCollecting() {
Set<SpellingAnnotation> previous = new HashSet<>();
model.getAnnotationIterator().forEachRemaining(annotation -> {
if (annotation instanceof SpellingAnnotation) {
previous.add((SpellingAnnotation)annotation);
}
});
if (model instanceof IAnnotationModelExtension) {
((IAnnotationModelExtension)model).replaceAnnotations(
previous.toArray(new SpellingAnnotation[previous.size()]),
annotations);
} else {
previous.forEach(model::removeAnnotation);
annotations.forEach(model::addAnnotation);
}
}
@Override
public void beginCollecting() {
}
@Override
public void accept(SpellingProblem problem) {
this.annotations.put(new SpellingAnnotation(problem), new Position(problem.getOffset(), problem.getLength()));
}
}, monitor);
return Status.OK_STATUS;
}
};
this.lastJob.setUser(false);
this.lastJob.setPriority(Job.DECORATE);
// set a delay before reacting to user action to handle continuous typing
this.lastJob.schedule(500);
}
}
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