EDIT

package eu.etaxonomy.taxeditor.editor.validation;

import org.apache.log4j.Logger;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.ui.IMemento;

import eu.etaxonomy.taxeditor.editor.internal.TaxeditorEditorPlugin;

import eu.etaxonomy.taxeditor.model.IContextListener;

/**

 * An {@code IContextListener} responsible for starting the

 * {@link ValidationDaemon}.

 * 

 * @see TaxeditorEditorPlugin#start(org.osgi.framework.BundleContext)

 * 

 * @author ayco_holleman

 * 

 */

public class ValidationContextListener implements IContextListener {

	@SuppressWarnings("unused")

	private static final Logger logger = Logger.getLogger(ValidationContextListener.class);

	private ValidationDaemon daemon;

	public ValidationContextListener(){

	}

	@Override

	public void contextAboutToStop(IMemento memento, IProgressMonitor monitor){

		if (daemon != null) {

			daemon.cancel();

			daemon.setCancelRequested();

		}

	}

	@Override

	public void contextStop(IMemento memento, IProgressMonitor monitor){

		if (daemon != null) {

			daemon.cancel();

			daemon.setCancelRequested();

		}

	}

	@Override

	public void contextStart(IMemento memento, IProgressMonitor monitor){

		if (daemon == null) {

			daemon = new ValidationDaemon();

		}

		daemon.schedule();

	}

	@Override

	public void contextRefresh(IProgressMonitor monitor){

		if (daemon != null) {

			daemon.cancel();

			daemon.setCancelRequested();

		}

	}

	@Override

	public void workbenchShutdown(IMemento memento, IProgressMonitor monitor){

		if (daemon != null) {

			daemon.cancel();

			daemon.setCancelRequested();

			daemon = null;

		}

	}

}