| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.events; |
| |
| import org.apache.fop.apps.FOUserAgent; |
| import org.apache.fop.events.model.EventSeverity; |
| import org.apache.fop.fo.FOValidationEventProducer; |
| import org.apache.fop.layoutmgr.BlockLevelEventProducer; |
| |
| /** |
| * EventListener proxy that inspects all events and adjusts severity levels where necessary. |
| * For validation events, it reacts on each event based on the strict validation setting in |
| * the user agent. |
| * For layout events, it reduces the default severity level if FOP signals that it can recover |
| * from the event. |
| */ |
| public class FOPEventListenerProxy implements EventListener { |
| |
| private static final String FOVALIDATION_EVENT_ID_PREFIX |
| = FOValidationEventProducer.class.getName(); |
| |
| private static final String BLOCK_LEVEL_EVENT_ID_PREFIX |
| = BlockLevelEventProducer.class.getName(); |
| |
| private EventListener delegate; |
| private FOUserAgent userAgent; |
| |
| /** |
| * Main constructor. |
| * @param delegate the event listener to delegate events to |
| * @param userAgent the FO user agent |
| */ |
| public FOPEventListenerProxy(EventListener delegate, FOUserAgent userAgent) { |
| this.delegate = delegate; |
| this.userAgent = userAgent; |
| } |
| |
| /** {@inheritDoc} */ |
| public synchronized void processEvent(Event event) { |
| if (event.getEventID().startsWith(FOVALIDATION_EVENT_ID_PREFIX)) { |
| Boolean canRecover = (Boolean)event.getParam("canRecover"); |
| if (Boolean.TRUE.equals(canRecover) && !userAgent.validateStrictly()) { |
| //Reduce severity if FOP can recover |
| event.setSeverity(EventSeverity.WARN); |
| } |
| } else if (event.getEventID().startsWith(BLOCK_LEVEL_EVENT_ID_PREFIX)) { |
| Boolean canRecover = (Boolean)event.getParam("canRecover"); |
| if (Boolean.TRUE.equals(canRecover)) { |
| //Reduce severity if FOP can recover |
| event.setSeverity(EventSeverity.WARN); |
| } |
| } |
| this.delegate.processEvent(event); |
| } |
| |
| } |