/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.studio.common.core.jobs;
import java.util.Iterator;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicBoolean;
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;
/**
* Job that watches the {@link StudioProgressMonitor}s.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class StudioProgressMonitorWatcherJob extends Job
{
/** The running flag */
private final AtomicBoolean running;
/** The list of active monitors being watched */
private final ConcurrentLinkedQueue<StudioProgressMonitor> monitors;
/**
* The constructor
*/
public StudioProgressMonitorWatcherJob()
{
super( Messages.getString( "StudioProgressMonitor.CheckCancellation" ) );
running = new AtomicBoolean( true );
monitors = new ConcurrentLinkedQueue<StudioProgressMonitor>();
}
/**
* Set the running flag to false
*/
public void stop()
{
running.set( false );
}
/**
* Add a new monitor to the list of monitors being watched
*
* @param monitor The monitor to add
*/
public void addMonitor( StudioProgressMonitor monitor )
{
monitors.add( monitor );
}
/**
* {@inheritDoc}
*/
@Override
protected IStatus run( IProgressMonitor monitor )
{
while ( running.get() )
{
for ( Iterator<StudioProgressMonitor> it = monitors.iterator(); it.hasNext(); )
{
StudioProgressMonitor next = it.next();
StudioProgressMonitor spm = next;
do
{
// reset allow message reporting
if ( !spm.isCanceled() && !spm.isDone )
{
spm.allowMessageReporting.set( true );
}
// check if canceled
if ( spm.isCanceled() )
{
spm.fireCancelRequested();
}
if ( spm.isCanceled() || spm.isDone )
{
it.remove();
break;
}
if ( spm.getWrappedProgressMonitor() instanceof StudioProgressMonitor )
{
spm = ( StudioProgressMonitor ) spm.getWrappedProgressMonitor();
}
else
{
spm = null;
}
}
while ( spm != null );
}
try
{
Thread.sleep( 1000 );
}
catch ( InterruptedException e )
{
}
}
return Status.OK_STATUS;
}
}