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/*******************************************************************************
* Copyright (c) 2000, 2005 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.cdt.internal.ui.editor;
import java.util.Collections;
import java.util.Iterator;
import org.eclipse.jface.text.source.Annotation;
import org.eclipse.jface.text.source.IAnnotationModel;
/**
* Filters problems based on their types.
*/
public class CAnnotationIterator implements Iterator {
private Iterator fIterator;
private Annotation fNext;
private boolean fSkipIrrelevants;
private boolean fReturnAllAnnotations;
/**
* Equivalent to <code>CAnnotationIterator(model, skipIrrelevants, false)</code>.
*/
public CAnnotationIterator(IAnnotationModel model, boolean skipIrrelevants) {
this(model, skipIrrelevants, false);
}
/**
* Returns a new CAnnotationIterator.
* @param model the annotation model
* @param skipIrrelevants whether to skip irrelevant annotations
* @param returnAllAnnotations Whether to return non IJavaAnnotations as well
*/
public CAnnotationIterator(IAnnotationModel model, boolean skipIrrelevants, boolean returnAllAnnotations) {
fReturnAllAnnotations= returnAllAnnotations;
if (model != null)
fIterator= model.getAnnotationIterator();
else
fIterator= Collections.EMPTY_LIST.iterator();
fSkipIrrelevants= skipIrrelevants;
skip();
}
private void skip() {
while (fIterator.hasNext()) {
Annotation next= (Annotation) fIterator.next();
if (next instanceof ICAnnotation) {
if (fSkipIrrelevants) {
if (!next.isMarkedDeleted()) {
fNext= next;
return;
}
} else {
fNext= next;
return;
}
} else if (fReturnAllAnnotations) {
fNext= next;
return;
}
}
fNext= null;
}
/*
* @see Iterator#hasNext()
*/
public boolean hasNext() {
return fNext != null;
}
/*
* @see Iterator#next()
*/
public Object next() {
try {
return fNext;
} finally {
skip();
}
}
/*
* @see Iterator#remove()
*/
public void remove() {
throw new UnsupportedOperationException();
}
}
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