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- /*
- * 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);
- }
-
- }
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