| /******************************************************************************* |
| * Copyright (c) 2005, 2012 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 API and implementation |
| *******************************************************************************/ |
| package org.eclipse.bpel.ui.adapters; |
| |
| import java.util.List; |
| |
| /** |
| * Adapter for an Activity which supports IContainer. This class forwards |
| * the IContainer methods to a delegate which subclasses should supply. |
| */ |
| public abstract class ContainerActivityAdapter extends ActivityAdapter implements IContainer { |
| |
| IContainer containerDelegate = null; |
| |
| protected final IContainer getContainerDelegate(Object object) { |
| if (containerDelegate == null) containerDelegate = createContainerDelegate(); |
| return containerDelegate; |
| } |
| |
| /** |
| * Subclasses must override this to create the actual IContainer |
| * implementation. This method should not return null. |
| */ |
| protected abstract IContainer createContainerDelegate(); |
| |
| /* IContainer */ |
| |
| public boolean addChild(Object object, Object child, Object insertBefore) { |
| return getContainerDelegate(object).addChild(object, child, insertBefore); |
| } |
| public List getChildren(Object object) { |
| return getContainerDelegate(object).getChildren(object); |
| } |
| public boolean removeChild(Object object, Object child) { |
| return getContainerDelegate(object).removeChild(object, child); |
| } |
| public boolean replaceChild(Object object, Object oldChild, Object newChild) { |
| return getContainerDelegate(object).replaceChild(object, oldChild, newChild); |
| } |
| public Object getNextSiblingChild(Object object, Object child) { |
| return getContainerDelegate(object).getNextSiblingChild(object, child); |
| } |
| public boolean canAddObject(Object object, Object child, Object insertBefore) { |
| return getContainerDelegate(object).canAddObject(object, child, insertBefore); |
| } |
| |
| public boolean canRemoveChild (Object object, Object child) { |
| return getContainerDelegate(object).canRemoveChild(object, child); |
| } |
| } |