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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.afp;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import org.apache.fop.afp.modca.AbstractDataObject;
import org.apache.fop.afp.modca.AbstractNamedAFPObject;
import org.apache.fop.afp.modca.IncludeObject;
import org.apache.fop.afp.modca.Registry;
import org.apache.fop.afp.modca.ResourceGroup;
/**
* Manages the creation and storage of document resources
*/
public class AFPResourceManager {
/** The AFP datastream (document tree) */
private DataStream dataStream;
/** Resource creation factory */
private final Factory factory;
private final AFPStreamer streamer;
private final AFPDataObjectFactory dataObjectFactory;
/** Maintain a reference count of instream objects for referencing purposes */
private int instreamObjectCount = 0;
/** a mapping of resourceInfo --> include name */
private final Map/*<AFPResourceInfo,String>*/ includeNameMap
= new java.util.HashMap()/*<AFPResourceInfo,String>*/;
/**
* Main constructor
*/
public AFPResourceManager() {
this.factory = new Factory();
this.streamer = new AFPStreamer(factory);
this.dataObjectFactory = new AFPDataObjectFactory(factory);
}
/**
* Sets the outputstream
*
* @param paintingState the AFP painting state
* @param outputStream the outputstream
* @return a new AFP DataStream
* @throws IOException thrown if an I/O exception of some sort has occurred
*/
public DataStream createDataStream(AFPPaintingState paintingState, OutputStream outputStream)
throws IOException {
this.dataStream = streamer.createDataStream(paintingState);
streamer.setOutputStream(outputStream);
return this.dataStream;
}
/**
* Returns the AFP DataStream
*
* @return the AFP DataStream
*/
public DataStream getDataStream() {
return this.dataStream;
}
/**
* Tells the streamer to write
*
* @throws IOException thrown if an I/O exception of some sort has occurred.
*/
public void writeToStream() throws IOException {
streamer.close();
}
/**
* Sets the default resource group file path
*
* @param filePath the default resource group file path
*/
public void setDefaultResourceGroupFilePath(String filePath) {
streamer.setDefaultResourceGroupFilePath(filePath);
}
/**
* Creates a new data object in the AFP datastream
*
* @param dataObjectInfo the data object info
*
* @throws IOException thrown if an I/O exception of some sort has occurred.
*/
public void createObject(AFPDataObjectInfo dataObjectInfo) throws IOException {
AbstractNamedAFPObject namedObj = null;
AFPResourceInfo resourceInfo = dataObjectInfo.getResourceInfo();
String uri = resourceInfo.getUri();
if (uri == null) {
uri = "/";
}
// if this is an instream data object adjust the uri to ensure that its unique
if (uri.endsWith("/")) {
uri += "#" + (++instreamObjectCount);
resourceInfo.setUri(uri);
}
String objectName = (String)includeNameMap.get(resourceInfo);
if (objectName == null) {
boolean useInclude = true;
Registry.ObjectType objectType = null;
// new resource so create
if (dataObjectInfo instanceof AFPImageObjectInfo) {
AFPImageObjectInfo imageObjectInfo = (AFPImageObjectInfo)dataObjectInfo;
namedObj = dataObjectFactory.createImage(imageObjectInfo);
} else if (dataObjectInfo instanceof AFPGraphicsObjectInfo) {
AFPGraphicsObjectInfo graphicsObjectInfo = (AFPGraphicsObjectInfo)dataObjectInfo;
namedObj = dataObjectFactory.createGraphic(graphicsObjectInfo);
} else {
// natively embedded object
namedObj = dataObjectFactory.createObjectContainer(dataObjectInfo);
objectType = dataObjectInfo.getObjectType();
useInclude = objectType != null && objectType.isIncludable();
}
// set data object viewport (i.e. position, rotation, dimension, resolution)
if (namedObj instanceof AbstractDataObject) {
AbstractDataObject dataObj = (AbstractDataObject)namedObj;
dataObj.setViewport(dataObjectInfo);
}
AFPResourceLevel resourceLevel = resourceInfo.getLevel();
ResourceGroup resourceGroup = streamer.getResourceGroup(resourceLevel);
useInclude &= resourceGroup != null;
if (useInclude) {
// if it is to reside within a resource group at print-file or external level
if (resourceLevel.isPrintFile() || resourceLevel.isExternal()) {
// wrap newly created data object in a resource object
namedObj = dataObjectFactory.createResource(namedObj, resourceInfo, objectType);
}
// add data object into its resource group destination
resourceGroup.addObject(namedObj);
// create the include object
objectName = namedObj.getName();
IncludeObject includeObject
= dataObjectFactory.createInclude(objectName, dataObjectInfo);
// add an include to the current page
dataStream.getCurrentPage().addObject(includeObject);
// record mapping of resource info to data object resource name
includeNameMap.put(resourceInfo, objectName);
} else {
// not to be included so inline data object directly into the current page
dataStream.getCurrentPage().addObject(namedObj);
}
} else {
// an existing data resource so reference it by adding an include to the current page
IncludeObject includeObject
= dataObjectFactory.createInclude(objectName, dataObjectInfo);
dataStream.getCurrentPage().addObject(includeObject);
}
}
}
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