001    // Copyright 2010 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.services;
016    
017    import java.io.IOException;
018    
019    import org.apache.tapestry5.ComponentResources;
020    import org.apache.tapestry5.EventConstants;
021    import org.apache.tapestry5.EventContext;
022    import org.apache.tapestry5.TrackableComponentEventCallback;
023    import org.apache.tapestry5.services.ComponentEventResultProcessor;
024    
025    public class PageActivatorImpl implements PageActivator
026    {
027    
028        @SuppressWarnings("unchecked")
029        public boolean activatePage(ComponentResources pageResources, EventContext activationContext,
030                ComponentEventResultProcessor resultProcessor) throws IOException
031        {
032            TrackableComponentEventCallback callback = new ComponentResultProcessorWrapper(resultProcessor);
033    
034            pageResources.triggerContextEvent(EventConstants.ACTIVATE, activationContext, callback);
035    
036            if (callback.isAborted())
037            {
038                callback.rethrow();
039                return true;
040            }
041    
042            return false;
043        }
044    
045    }