| // Copyright 2007, 2008, 2010 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.tapestry5.internal.services; |
| |
| import org.apache.tapestry5.ComponentEventCallback; |
| import org.apache.tapestry5.TapestryMarkers; |
| import org.apache.tapestry5.runtime.Event; |
| import org.slf4j.Logger; |
| |
| @SuppressWarnings("all") |
| public class EventImpl implements Event |
| { |
| private boolean aborted; |
| |
| private String methodDescription; |
| |
| private final ComponentEventCallback handler; |
| |
| private final Logger logger; |
| |
| private final boolean debugEnabled; |
| |
| /** |
| * @param handler informed of return values from methods, deems when the event is aborted |
| * @param logger used to log method invocations |
| */ |
| public EventImpl(ComponentEventCallback handler, Logger logger) |
| { |
| assert handler != null; |
| this.handler = handler; |
| this.logger = logger; |
| |
| // TAP5-471: Thousands of calls to isDebugEnabled() do add up |
| debugEnabled = logger.isDebugEnabled(); |
| } |
| |
| public boolean isAborted() |
| { |
| return aborted; |
| } |
| |
| public void setMethodDescription(String methodDescription) |
| { |
| if (debugEnabled) |
| logger.debug(TapestryMarkers.EVENT_HANDLER_METHOD, "Invoking: " + methodDescription); |
| |
| this.methodDescription = methodDescription; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public boolean storeResult(Object result) |
| { |
| // Given that this method is *only* invoked from code |
| // that is generated at runtime and proven to be correct, |
| // this should never, ever happen. But what the hell, |
| // let's check anyway. |
| |
| if (aborted) |
| throw new IllegalStateException(ServicesMessages.componentEventIsAborted(methodDescription)); |
| |
| |
| if (result != null) |
| aborted |= handler.handleResult(result); |
| |
| return aborted; |
| } |
| |
| protected String getMethodDescription() |
| { |
| return methodDescription; |
| } |
| |
| public void reset() |
| { |
| aborted = false; |
| methodDescription = null; |
| } |
| } |