/*******************************************************************************
* Copyright (c) 2006, 2014 Mountainminds GmbH & Co. KG and Contributors
* 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:
* Marc R. Hoffmann - initial API and implementation
*
******************************************************************************/
package com.mountainminds.eclemma.internal.core;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.osgi.util.NLS;
import com.mountainminds.eclemma.core.ICoverageSession;
import com.mountainminds.eclemma.core.ISessionListener;
import com.mountainminds.eclemma.core.ISessionManager;
import com.mountainminds.eclemma.core.analysis.IJavaCoverageListener;
import com.mountainminds.eclemma.core.analysis.IJavaModelCoverage;
import com.mountainminds.eclemma.internal.core.analysis.SessionAnalyzer;
/**
* Internal utility class that loads the coverage data asynchronously, holds the
* current {@link IJavaModelCoverage} object and sends out events in case of
* changed coverage information.
*/
public class JavaCoverageLoader {
private final ISessionManager sessionManager;
private IJavaModelCoverage coverage;
private final List<IJavaCoverageListener> listeners = new ArrayList<IJavaCoverageListener>();
private ISessionListener sessionListener = new ISessionListener() {
public void sessionActivated(ICoverageSession session) {
Job.getJobManager().cancel(LOADJOB);
if (session == null) {
coverage = null;
fireCoverageChanged();
} else {
coverage = IJavaModelCoverage.LOADING;
fireCoverageChanged();
new LoadSessionJob(session).schedule();
}
}
public void sessionAdded(ICoverageSession addedSession) {
}
public void sessionRemoved(ICoverageSession removedSession) {
}
};
private static final Object LOADJOB = new Object();
private class LoadSessionJob extends Job {
private final ICoverageSession session;
public LoadSessionJob(ICoverageSession session) {
super(NLS.bind(CoreMessages.AnalyzingCoverageSession_task,
session.getDescription()));
this.session = session;
}
protected IStatus run(IProgressMonitor monitor) {
final IJavaModelCoverage c;
try {
c = new SessionAnalyzer().processSession(session, monitor);
} catch (CoreException e) {
return e.getStatus();
}
coverage = monitor.isCanceled() ? null : c;
fireCoverageChanged();
return Status.OK_STATUS;
}
public boolean belongsTo(Object family) {
return family == LOADJOB;
}
};
public JavaCoverageLoader(ISessionManager sessionManager) {
this.sessionManager = sessionManager;
sessionManager.addSessionListener(sessionListener);
}
public void addJavaCoverageListener(IJavaCoverageListener l) {
if (l == null) {
throw new IllegalArgumentException();
}
if (!listeners.contains(l)) {
listeners.add(l);
}
}
public void removeJavaCoverageListener(IJavaCoverageListener l) {
listeners.remove(l);
}
protected void fireCoverageChanged() {
// avoid concurrent modification issues
for (IJavaCoverageListener l : new ArrayList<IJavaCoverageListener>(
listeners)) {
l.coverageChanged();
}
}
public IJavaModelCoverage getJavaModelCoverage() {
return coverage;
}
public void dispose() {
sessionManager.removeSessionListener(sessionListener);
}
}