/*******************************************************************************
 * Copyright (c) 2004, 2011 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial implementation
 *******************************************************************************/
package org.eclipse.debug.internal.ui.actions.breakpointGroups;

import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IViewPart;

/**
 * An action which clears (sets the null) the default breakpoint group.
 */
public abstract class BreakpointWorkingSetAction extends AbstractBreakpointsViewAction implements IPropertyChangeListener {

    protected IAction fAction;

    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
     */
    @Override
	public void selectionChanged(IAction action, ISelection selection) {
        update();
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
     */
    @Override
	public void init(IViewPart view) {
        super.init(view);
        DebugUIPlugin.getDefault().getPreferenceStore().addPropertyChangeListener(this);
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate2#dispose()
     */
    @Override
	public void dispose() {
        DebugUIPlugin.getDefault().getPreferenceStore().removePropertyChangeListener(this);
        super.dispose();
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate2#init(org.eclipse.jface.action.IAction)
     */
    @Override
	public void init(IAction action) {
        fAction = action;
        super.init(action);
        update();
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
     */
    @Override
	public void propertyChange(PropertyChangeEvent event) {
        if (event.getProperty().equals(IInternalDebugUIConstants.MEMENTO_BREAKPOINT_WORKING_SET_NAME)) {
            update();
        }

    }
    protected abstract void update();
}