001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.event;
016    
017    import java.util.EventListener;
018    
019    /**
020     * An interface for objects that want to know when the end of the request cycle occurs, so that any
021     * resources that should be limited to just one request cycle can be released.
022     * 
023     * @see org.apache.tapestry.event.PageAttachListener
024     * @author Howard Lewis Ship
025     * @since 1.0.5
026     */
027    
028    public interface PageDetachListener extends EventListener
029    {
030        /**
031         * Invoked by the page from its {@link org.apache.tapestry.IPage#detach()}method.
032         */
033    
034        public void pageDetached(PageEvent event);
035    }