1 /*******************************************************************************
2 * Copyright (c) 2000, 2003 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Common Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/cpl-v10.html
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11 package net.sourceforge.phpdt.internal.ui.viewsupport;
14 import java.util.HashSet;
16 import net.sourceforge.phpdt.internal.ui.util.SWTUtil;
17 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
18 import net.sourceforge.phpeclipse.phpeditor.CompilationUnitAnnotationModelEvent;
20 import org.eclipse.core.resources.IMarker;
21 import org.eclipse.core.resources.IMarkerDelta;
22 import org.eclipse.core.resources.IProject;
23 import org.eclipse.core.resources.IResource;
24 import org.eclipse.core.resources.IResourceChangeEvent;
25 import org.eclipse.core.resources.IResourceChangeListener;
26 import org.eclipse.core.resources.IResourceDelta;
27 import org.eclipse.core.resources.IResourceDeltaVisitor;
28 import org.eclipse.core.runtime.CoreException;
29 import org.eclipse.jface.text.source.AnnotationModelEvent;
30 import org.eclipse.jface.text.source.IAnnotationModel;
31 import org.eclipse.jface.text.source.IAnnotationModelListener;
32 import org.eclipse.jface.text.source.IAnnotationModelListenerExtension;
33 import org.eclipse.jface.util.ListenerList;
34 import org.eclipse.swt.widgets.Display;
39 * Listens to resource deltas and filters for marker changes of type IMarker.PROBLEM
40 * Viewers showing error ticks should register as listener to
43 public class ProblemMarkerManager implements IResourceChangeListener, IAnnotationModelListener , IAnnotationModelListenerExtension {
46 * Visitors used to look if the element change delta containes a marker change.
48 private static class ProjectErrorVisitor implements IResourceDeltaVisitor {
50 private HashSet fChangedElements;
52 public ProjectErrorVisitor(HashSet changedElements) {
53 fChangedElements= changedElements;
56 public boolean visit(IResourceDelta delta) throws CoreException {
57 IResource res= delta.getResource();
58 if (res instanceof IProject && delta.getKind() == IResourceDelta.CHANGED) {
60 IProject project= (IProject) res;
61 if (!project.isAccessible() || !project.hasNature(PHPeclipsePlugin.PHP_NATURE_ID)) {
62 // only track open Java projects
65 } catch (CoreException e) {
66 PHPeclipsePlugin.log(e);
70 checkInvalidate(delta, res);
74 private void checkInvalidate(IResourceDelta delta, IResource resource) {
75 int kind= delta.getKind();
76 if (kind == IResourceDelta.REMOVED || kind == IResourceDelta.ADDED || (kind == IResourceDelta.CHANGED && isErrorDelta(delta))) {
77 // invalidate the resource and all parents
78 while (resource.getType() != IResource.ROOT && fChangedElements.add(resource)) {
79 resource= resource.getParent();
84 private boolean isErrorDelta(IResourceDelta delta) {
85 if ((delta.getFlags() & IResourceDelta.MARKERS) != 0) {
86 IMarkerDelta[] markerDeltas= delta.getMarkerDeltas();
87 for (int i= 0; i < markerDeltas.length; i++) {
88 if (markerDeltas[i].isSubtypeOf(IMarker.PROBLEM)) {
89 int kind= markerDeltas[i].getKind();
90 if (kind == IResourceDelta.ADDED || kind == IResourceDelta.REMOVED)
92 int severity= markerDeltas[i].getAttribute(IMarker.SEVERITY, -1);
93 int newSeverity= markerDeltas[i].getMarker().getAttribute(IMarker.SEVERITY, -1);
94 if (newSeverity != severity)
103 private ListenerList fListeners;
106 public ProblemMarkerManager() {
107 fListeners= new ListenerList(10);
111 * @see IResourceChangeListener#resourceChanged
113 public void resourceChanged(IResourceChangeEvent event) {
114 HashSet changedElements= new HashSet();
117 IResourceDelta delta= event.getDelta();
119 delta.accept(new ProjectErrorVisitor(changedElements));
120 } catch (CoreException e) {
121 PHPeclipsePlugin.log(e.getStatus());
124 if (!changedElements.isEmpty()) {
125 IResource[] changes= (IResource[]) changedElements.toArray(new IResource[changedElements.size()]);
126 fireChanges(changes, true);
130 * @see IAnnotationModelListener#modelChanged(IAnnotationModel)
132 public void modelChanged(IAnnotationModel model) {
137 * @see IAnnotationModelListenerExtension#modelChanged(AnnotationModelEvent)
139 public void modelChanged(AnnotationModelEvent event) {
140 if (event instanceof CompilationUnitAnnotationModelEvent) {
141 CompilationUnitAnnotationModelEvent cuEvent= (CompilationUnitAnnotationModelEvent) event;
142 if (cuEvent.includesProblemMarkerAnnotationChanges()) {
143 IResource[] changes= new IResource[] { cuEvent.getUnderlyingResource() };
144 fireChanges(changes, false);
150 * Adds a listener for problem marker changes.
152 public void addListener(IProblemChangedListener listener) {
153 if (fListeners.isEmpty()) {
154 PHPeclipsePlugin.getWorkspace().addResourceChangeListener(this);
155 PHPeclipsePlugin.getDefault().getCompilationUnitDocumentProvider().addGlobalAnnotationModelListener(this);
157 fListeners.add(listener);
161 * Removes a <code>IProblemChangedListener</code>.
163 public void removeListener(IProblemChangedListener listener) {
164 fListeners.remove(listener);
165 if (fListeners.isEmpty()) {
166 PHPeclipsePlugin.getWorkspace().removeResourceChangeListener(this);
167 PHPeclipsePlugin.getDefault().getCompilationUnitDocumentProvider().removeGlobalAnnotationModelListener(this);
171 private void fireChanges(final IResource[] changes, final boolean isMarkerChange) {
172 Display display= SWTUtil.getStandardDisplay();
173 if (display != null && !display.isDisposed()) {
174 display.asyncExec(new Runnable() {
176 Object[] listeners= fListeners.getListeners();
177 for (int i= 0; i < listeners.length; i++) {
178 IProblemChangedListener curr= (IProblemChangedListener) listeners[i];
179 curr.problemsChanged(changes, isMarkerChange);