| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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.javaeditor; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.core.runtime.CoreException; |
| |
| import org.eclipse.core.resources.IMarker; |
| |
| import org.eclipse.jface.text.source.Annotation; |
| |
| import org.eclipse.ui.texteditor.MarkerAnnotation; |
| |
| |
| /** |
| * Filters problems based on their types. |
| */ |
| public class JavaAnnotationIterator implements Iterator<Annotation> { |
| |
| private Iterator<Annotation> fIterator; |
| private Annotation fNext; |
| private boolean fReturnAllAnnotations; |
| |
| |
| /** |
| * Returns a new JavaAnnotationIterator. |
| * @param parent the parent iterator to iterate over annotations |
| * @param returnAllAnnotations whether to return all annotations or just problem annotations |
| */ |
| public JavaAnnotationIterator(Iterator<Annotation> parent, boolean returnAllAnnotations) { |
| fReturnAllAnnotations= returnAllAnnotations; |
| fIterator= parent; |
| skip(); |
| } |
| |
| private void skip() { |
| while (fIterator.hasNext()) { |
| Annotation next= fIterator.next(); |
| |
| if (next.isMarkedDeleted()) |
| continue; |
| |
| if (fReturnAllAnnotations || next instanceof IJavaAnnotation || isProblemMarkerAnnotation(next)) { |
| fNext= next; |
| return; |
| } |
| } |
| fNext= null; |
| } |
| |
| private static boolean isProblemMarkerAnnotation(Annotation annotation) { |
| if (!(annotation instanceof MarkerAnnotation)) |
| return false; |
| try { |
| return(((MarkerAnnotation)annotation).getMarker().isSubtypeOf(IMarker.PROBLEM)); |
| } catch (CoreException e) { |
| return false; |
| } |
| } |
| |
| /* |
| * @see Iterator#hasNext() |
| */ |
| public boolean hasNext() { |
| return fNext != null; |
| } |
| |
| /* |
| * @see Iterator#next() |
| */ |
| public Annotation next() { |
| try { |
| return fNext; |
| } finally { |
| skip(); |
| } |
| } |
| |
| /* |
| * @see Iterator#remove() |
| */ |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| } |