ProblemMarkerManager.java
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net.sourceforge.phpdt.internal.ui.viewsupport |
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PHPeclipse |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package net.sourceforge.phpdt.internal.ui.viewsupport;
import java.util.HashSet;
import net.sourceforge.phpdt.internal.ui.util.SWTUtil;
import net.sourceforge.phpeclipse.PHPeclipsePlugin;
import net.sourceforge.phpeclipse.phpeditor.CompilationUnitAnnotationModelEvent;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IMarkerDelta;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.text.source.AnnotationModelEvent;
import org.eclipse.jface.text.source.IAnnotationModel;
import org.eclipse.jface.text.source.IAnnotationModelListener;
import org.eclipse.jface.text.source.IAnnotationModelListenerExtension;
import org.eclipse.jface.util.ListenerList;
import org.eclipse.swt.widgets.Display;
/**
* Listens to resource deltas and filters for marker changes of type
* IMarker.PROBLEM Viewers showing error ticks should register as listener to
* this type.
*/
public class ProblemMarkerManager implements IResourceChangeListener,
IAnnotationModelListener, IAnnotationModelListenerExtension {
/**
* Visitors used to look if the element change delta containes a marker
* change.
*/
private static class ProjectErrorVisitor implements IResourceDeltaVisitor {
private HashSet fChangedElements;
public ProjectErrorVisitor(HashSet changedElements) {
fChangedElements = changedElements;
}
public boolean visit(IResourceDelta delta) throws CoreException {
IResource res = delta.getResource();
if (res instanceof IProject
&& delta.getKind() == IResourceDelta.CHANGED) {
try {
IProject project = (IProject) res;
if (!project.isAccessible()
|| !project
.hasNature(PHPeclipsePlugin.PHP_NATURE_ID)) {
// only track open Java projects
return false;
}
} catch (CoreException e) {
PHPeclipsePlugin.log(e);
return false;
}
}
checkInvalidate(delta, res);
return true;
}
private void checkInvalidate(IResourceDelta delta, IResource resource) {
int kind = delta.getKind();
if (kind == IResourceDelta.REMOVED || kind == IResourceDelta.ADDED
|| (kind == IResourceDelta.CHANGED && isErrorDelta(delta))) {
// invalidate the resource and all parents
while (resource.getType() != IResource.ROOT
&& fChangedElements.add(resource)) {
resource = resource.getParent();
}
}
}
private boolean isErrorDelta(IResourceDelta delta) {
if ((delta.getFlags() & IResourceDelta.MARKERS) != 0) {
IMarkerDelta[] markerDeltas = delta.getMarkerDeltas();
for (int i = 0; i < markerDeltas.length; i++) {
if (markerDeltas[i].isSubtypeOf(IMarker.PROBLEM)) {
int kind = markerDeltas[i].getKind();
if (kind == IResourceDelta.ADDED
|| kind == IResourceDelta.REMOVED)
return true;
int severity = markerDeltas[i].getAttribute(
IMarker.SEVERITY, -1);
int newSeverity = markerDeltas[i].getMarker()
.getAttribute(IMarker.SEVERITY, -1);
if (newSeverity != severity)
return true;
}
}
}
return false;
}
}
private ListenerList fListeners;
public ProblemMarkerManager() {
fListeners = new ListenerList(10);
}
/*
* @see IResourceChangeListener#resourceChanged
*/
public void resourceChanged(IResourceChangeEvent event) {
HashSet changedElements = new HashSet();
try {
IResourceDelta delta = event.getDelta();
if (delta != null)
delta.accept(new ProjectErrorVisitor(changedElements));
} catch (CoreException e) {
PHPeclipsePlugin.log(e.getStatus());
}
if (!changedElements.isEmpty()) {
IResource[] changes = (IResource[]) changedElements
.toArray(new IResource[changedElements.size()]);
fireChanges(changes, true);
}
}
/*
* (non-Javadoc)
*
* @see IAnnotationModelListener#modelChanged(IAnnotationModel)
*/
public void modelChanged(IAnnotationModel model) {
// no action
}
/*
* (non-Javadoc)
*
* @see IAnnotationModelListenerExtension#modelChanged(AnnotationModelEvent)
*/
public void modelChanged(AnnotationModelEvent event) {
if (event instanceof CompilationUnitAnnotationModelEvent) {
CompilationUnitAnnotationModelEvent cuEvent = (CompilationUnitAnnotationModelEvent) event;
if (cuEvent.includesProblemMarkerAnnotationChanges()) {
IResource[] changes = new IResource[] { cuEvent
.getUnderlyingResource() };
fireChanges(changes, false);
}
}
}
/**
* Adds a listener for problem marker changes.
*/
public void addListener(IProblemChangedListener listener) {
if (fListeners.isEmpty()) {
PHPeclipsePlugin.getWorkspace().addResourceChangeListener(this);
PHPeclipsePlugin.getDefault().getCompilationUnitDocumentProvider()
.addGlobalAnnotationModelListener(this);
}
fListeners.add(listener);
}
/**
* Removes a <code>IProblemChangedListener</code>.
*/
public void removeListener(IProblemChangedListener listener) {
fListeners.remove(listener);
if (fListeners.isEmpty()) {
PHPeclipsePlugin.getWorkspace().removeResourceChangeListener(this);
PHPeclipsePlugin.getDefault().getCompilationUnitDocumentProvider()
.removeGlobalAnnotationModelListener(this);
}
}
private void fireChanges(final IResource[] changes,
final boolean isMarkerChange) {
Display display = SWTUtil.getStandardDisplay();
if (display != null && !display.isDisposed()) {
display.asyncExec(new Runnable() {
public void run() {
Object[] listeners = fListeners.getListeners();
for (int i = 0; i < listeners.length; i++) {
IProblemChangedListener curr = (IProblemChangedListener) listeners[i];
curr.problemsChanged(changes, isMarkerChange);
}
}
});
}
}
}
The table below shows all metrics for ProblemMarkerManager.java.




