bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/ActionSetMenuManager.java

/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal;


import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.SubContributionItem;
import org.eclipse.jface.action.SubMenuManager;

/**
 * An <code>EditorMenuManager</code> is used to sort the contributions
 * made by an editor so that they always appear after the action sets.  
 */
public class ActionSetMenuManager extends SubMenuManager {
	private String actionSetId;
	/**
	 * Constructs a new editor manager.
	 */
	public ActionSetMenuManager(IMenuManager mgr, String actionSetId) {
		super(mgr);
		this.actionSetId = actionSetId;
	}
    
	/* (non-Javadoc)
	 * Method declared on IContributionManager.
	 *
	 * Returns the item passed to us, not the wrapper.
	 * In the case of menu's not added by this manager,
	 * ensure that we return a wrapper for the menu.
	 */
	public IContributionItem find(String id) {
		IContributionItem item = getParentMenuManager().find(id);
		if (item instanceof SubContributionItem)
			// Return the item passed to us, not the wrapper.
			item = unwrap(item);

		if (item instanceof IMenuManager) {
			// if it is a menu manager wrap it before returning
			IMenuManager menu = (IMenuManager) item;
			if (menu instanceof SubMenuManager)
				// it it is already wrapped then remover the wrapper and 
				// rewrap. We have a table of wrappers so we reuse wrappers
				// we create.
				menu = (IMenuManager) ((SubMenuManager) menu).getParent();
			item = getWrapper(menu);
		}

		return item;
	}
	/* (non-Javadoc)
	 * Method declared on IContributionManager.
	 */
	public IContributionItem[] getItems() {
		return getParentMenuManager().getItems();
	}
	/* (non-Javadoc)
	 * Method declared on SubContributionManager.
	 */
	protected SubContributionItem wrap(IContributionItem item) {
		return new ActionSetContributionItem(item, actionSetId);
	}
	/* (non-Javadoc)
	 * Method declared on SubMenuManager.
	 */
	protected SubMenuManager wrapMenu(IMenuManager menu) {
		return new ActionSetMenuManager(menu, actionSetId);
	}
}