MultiFilter.java :  » Web-Framework » aranea-mvc-1.1.1 » org » araneaframework » uilib » list » structure » filter » Java Open Source

Java Open Source » Web Framework » aranea mvc 1.1.1 
aranea mvc 1.1.1 » org » araneaframework » uilib » list » structure » filter » MultiFilter.java
/**
 * Copyright 2006 Webmedia Group Ltd.
 *
 * 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.araneaframework.uilib.list.structure.filter;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.araneaframework.Environment;
import org.araneaframework.uilib.list.structure.ListFilter;



public abstract class MultiFilter implements ListFilter {
  
  protected List children = new ArrayList();
  
  public void init(Environment env) {
    for (Iterator i = children.iterator(); i.hasNext();) {
      ListFilter filter = (ListFilter) i.next();
      filter.init(env);
    }
  }
  public void destroy() {
    clearFilters();
  }
  public MultiFilter addFilter(ListFilter filter) {
    this.children.add(filter);
    return this;
  }
  public List getFilters() {
    return this.children;
  }
  public void clearFilters() {
    for (Iterator i = children.iterator(); i.hasNext();) {
      ListFilter filter = (ListFilter) i.next();
      filter.destroy();
      i.remove();
    }
  }
}
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