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/***************************************************************************
* Copyright (c) 2004-2007 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.ui.actions;
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;
import org.eclipse.internal.net4j.bundle.OM;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.IWorkbenchPage;
/**
* @author Eike Stepper
*/
public abstract class LongRunningAction extends SafeAction
{
private IWorkbenchPage page;
private IStatus status;
private int totalWork;
public LongRunningAction(IWorkbenchPage page)
{
this.page = page;
}
public LongRunningAction(IWorkbenchPage page, String text, String toolTipText, ImageDescriptor image)
{
super(text, toolTipText, image);
this.page = page;
}
public LongRunningAction(IWorkbenchPage page, String text, ImageDescriptor image)
{
super(text, image);
this.page = page;
}
public LongRunningAction(IWorkbenchPage page, String text, String toolTipText)
{
super(text, toolTipText);
this.page = page;
}
public LongRunningAction(IWorkbenchPage page, String text, int style)
{
super(text, style);
this.page = page;
}
public LongRunningAction(IWorkbenchPage page, String text)
{
super(text);
this.page = page;
}
protected final int getTotalWork()
{
return totalWork;
}
protected final void setTotalWork(int totalWork)
{
this.totalWork = totalWork;
}
protected final void cancel()
{
totalWork = 0;
}
protected final void setStatus(IStatus status)
{
this.status = status;
}
@Override
protected final void doRun() throws Exception
{
totalWork = IProgressMonitor.UNKNOWN;
preRun(page);
if (totalWork != 0)
{
new Job(getText())
{
@Override
protected IStatus run(IProgressMonitor monitor)
{
monitor.beginTask("", totalWork);
try
{
setStatus(Status.OK_STATUS);
doRun(page, monitor);
return status;
}
catch (Exception ex)
{
return handleException(ex);
}
finally
{
monitor.done();
}
}
}.schedule();
}
}
protected void preRun(IWorkbenchPage page) throws Exception
{
}
protected abstract void doRun(IWorkbenchPage page, IProgressMonitor monitor) throws Exception;
protected IStatus handleException(Exception ex)
{
ex.printStackTrace();
return new Status(IStatus.ERROR, OM.BUNDLE_ID, "An error has occured.", ex);
}
protected final void checkCancelation(IProgressMonitor monitor)
{
if (monitor.isCanceled())
{
throw new OperationCanceledException();
}
}
}
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