001    // Copyright 2006, 2008 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.tapestry5.internal.structure;
016    
017    import org.apache.tapestry5.runtime.Component;
018    
019    /**
020     * Callback interface, used when invoking lifecycle methods on components.
021     */
022    public interface ComponentCallback
023    {
024        /**
025         * Callback method, passed a component to operate upon.
026         */
027        void run(Component component);
028    
029        /**
030         * Returns true if the underlying event has been aborted and no further event method invocations should occur.
031         *
032         * @return true if the event is aborted, false if event processing should continue
033         * @see org.apache.tapestry5.runtime.Event#isAborted()
034         */
035        boolean isEventAborted();
036    }