| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.enhance; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * |
| * @author Mindbridge |
| * @version $Id$ |
| * @since 3.0 |
| * |
| */ |
| public abstract class BaseEnhancedClass implements IEnhancedClass |
| { |
| |
| /** |
| * List of {@link IEnhancer}. |
| * |
| **/ |
| private List _enhancers; |
| |
| protected List getEnhancers() |
| { |
| return _enhancers; |
| } |
| |
| public void addEnhancer(IEnhancer enhancer) |
| { |
| if (_enhancers == null) |
| _enhancers = new ArrayList(); |
| |
| _enhancers.add(enhancer); |
| } |
| |
| /** |
| * @see org.apache.tapestry.enhance.IEnhancedClass#hasModifications() |
| */ |
| public boolean hasModifications() |
| { |
| return _enhancers != null && !_enhancers.isEmpty(); |
| } |
| |
| public void performEnhancement() |
| { |
| List enhancers = getEnhancers(); |
| |
| if (enhancers == null) |
| return; |
| |
| int count = enhancers.size(); |
| |
| for (int i = 0; i < count; i++) |
| { |
| IEnhancer enhancer = (IEnhancer) enhancers.get(i); |
| |
| enhancer.performEnhancement(this); |
| } |
| } |
| |
| } |