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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.render;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.fop.apps.FOUserAgent;
/**
* Abstract base classes for renderer-related configurator classes. This class basically just
* provides an accessor to the specific renderer configuration object.
*/
public abstract class AbstractRendererConfigurator {
/** logger instance */
protected static Log log = LogFactory.getLog(AbstractRendererConfigurator.class);
/** fop factory configuration */
protected FOUserAgent userAgent = null;
/**
* Default constructor
* @param userAgent user agent
*/
public AbstractRendererConfigurator(FOUserAgent userAgent) {
super();
this.userAgent = userAgent;
}
/**
* Returns the configuration subtree for a specific renderer.
* @param renderer the renderer
* @return the requested configuration subtree, null if there's no configuration
*/
protected Configuration getRendererConfig(Renderer renderer) {
String mimeType = renderer.getMimeType();
if (mimeType == null) {
if (log.isInfoEnabled()) {
log.info("renderer mimeType is null");
}
return null;
}
return getRendererConfig(mimeType);
}
/**
* Returns the configuration subtree for a specific renderer.
* @param mimeType the MIME type of the renderer
* @return the requested configuration subtree, null if there's no configuration
*/
private Configuration getRendererConfig(String mimeType) {
Configuration cfg = userAgent.getFactory().getUserConfig();
if (cfg == null) {
if (log.isDebugEnabled()) {
log.debug("userconfig is null");
}
return null;
}
Configuration userRendererConfig = null;
Configuration[] cfgs
= cfg.getChild("renderers").getChildren("renderer");
for (int i = 0; i < cfgs.length; ++i) {
Configuration child = cfgs[i];
try {
if (child.getAttribute("mime").equals(mimeType)) {
userRendererConfig = child;
break;
}
} catch (ConfigurationException e) {
// silently pass over configurations without mime type
}
}
log.debug((userRendererConfig == null ? "No u" : "U")
+ "ser configuration found for MIME type " + mimeType);
return userRendererConfig;
}
}
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