/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2009 RSSOwl Development Team **
** http://www.rssowl.org/ **
** **
** 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.rssowl.org/legal/epl-v10.html **
** **
** A copy is found in the file epl-v10.html and important notices to the **
** license from the team is found in the textfile LICENSE.txt distributed **
** in this package. **
** **
** This copyright notice MUST APPEAR in all copies of the file! **
** **
** Contributors: **
** RSSOwl Development Team - initial API and implementation **
** **
** ********************************************************************** */
package org.rssowl.ui.internal;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
/**
* Helper to properly dispose a Menu created from this {@link IMenuCreator} as
* soon as it is no longer needed or a new one is created.
*
* @author bpasero
*/
public abstract class ContextMenuCreator implements IMenuCreator {
private Menu fMenu;
/*
* @see org.eclipse.jface.action.IMenuCreator#getMenu(org.eclipse.swt.widgets.Control)
*/
public Menu getMenu(Control parent) {
if (fMenu != null)
OwlUI.safeDispose(fMenu);
fMenu = createMenu(parent);
return fMenu;
}
/**
* @param parent the parent control
* @return the menu, or <code>null</code> if the menu could not be created
*/
public abstract Menu createMenu(Control parent);
/*
* @see org.eclipse.jface.action.IMenuCreator#dispose()
*/
public void dispose() {
if (fMenu != null)
OwlUI.safeDispose(fMenu);
}
/*
* @see org.eclipse.jface.action.IMenuCreator#getMenu(org.eclipse.swt.widgets.Menu)
*/
public Menu getMenu(Menu parent) {
return null;
}
}