/*
* Contributions to FindBugs
* Copyright (C) 2008, Andrei Loskutov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package de.tobject.findbugs.view.explorer;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IMarkerDelta;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import de.tobject.findbugs.marker.FindBugsMarker;
/**
* Listener which reports changes on projects or on FindBug markers
*
* @author Andrei
*/
final class ResourceChangeListener implements IResourceChangeListener {
static final int SHORT_DELAY = 250;
static final int LONG_DELAY = 750;
final IViewerRefreshJob refreshJob;
ResourceChangeListener(IViewerRefreshJob refreshJob) {
this.refreshJob = refreshJob;
}
public void resourceChanged(IResourceChangeEvent event) {
boolean postBuild = event.getType() == IResourceChangeEvent.POST_BUILD;
boolean accepted = false;
/*
* gather all marker changes from the delta. be sure to do this in the
* calling thread, as the delta is destroyed when this method returns
*/
IMarkerDelta[] markerDeltas = event.findMarkerDeltas(FindBugsMarker.NAME, true);
for (IMarkerDelta mdelta : markerDeltas) {
IMarker marker = mdelta.getMarker();
if (marker == null) {
continue;
}
DeltaInfo deltaInfo = new DeltaInfo(marker, mdelta.getKind());
if (BugContentProvider.DEBUG) {
System.out.println("resource change for: " + deltaInfo);
}
accepted |= refreshJob.addToQueue(deltaInfo);
}
if (!accepted) {
return;
}
if (postBuild) {
scheduleRefreshJob(SHORT_DELAY);
} else {
// After some time do updates anyways
scheduleRefreshJob(LONG_DELAY);
}
}
void scheduleRefreshJob(int delay) {
refreshJob.schedule(delay);
}
}