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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* 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:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.util.ui.actions;
import org.eclipse.net4j.util.internal.ui.bundle.OM;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
/**
* @author Eike Stepper
*/
public abstract class LongRunningActionDelegate extends SafeActionDelegate
{
private int totalWork;
public LongRunningActionDelegate()
{
}
protected final int getTotalWork()
{
return totalWork;
}
protected final void setTotalWork(int totalWork)
{
this.totalWork = totalWork;
}
protected final void cancel()
{
totalWork = 0;
}
@Override
protected final void safeRun() throws Exception
{
totalWork = IProgressMonitor.UNKNOWN;
preRun();
if (totalWork != 0)
{
new Job(getText())
{
@Override
protected IStatus run(IProgressMonitor progressMonitor)
{
try
{
doRun(progressMonitor);
return Status.OK_STATUS;
}
catch (Exception ex)
{
OM.LOG.error(ex);
return new Status(IStatus.ERROR, OM.BUNDLE_ID, ex.getMessage(), ex);
}
}
}.schedule();
}
}
protected void preRun() throws Exception
{
}
protected String getBundleID()
{
return OM.BUNDLE_ID;
}
/**
* @since 2.0
*/
protected abstract void doRun(IProgressMonitor progressMonitor) throws Exception;
protected final void checkCancelation(IProgressMonitor monitor)
{
if (monitor.isCanceled())
{
throw new OperationCanceledException();
}
}
}
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