| /* |
| * 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.afp.extensions; |
| |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.helpers.AttributesImpl; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.fop.render.afp.extensions.AFPPageSegmentElement.AFPPageSegmentSetup; |
| import org.apache.fop.util.ContentHandlerFactory; |
| import org.apache.fop.util.ContentHandlerFactory.ObjectBuiltListener; |
| |
| /** |
| * ContentHandler (parser) for restoring AFPExtension objects from XML. |
| */ |
| public class AFPExtensionHandler extends DefaultHandler |
| implements ContentHandlerFactory.ObjectSource { |
| |
| /** Logger instance */ |
| protected static final Log log = LogFactory.getLog(AFPExtensionHandler.class); |
| |
| private StringBuffer content = new StringBuffer(); |
| private Attributes lastAttributes; |
| |
| private AFPExtensionAttachment returnedObject; |
| private ObjectBuiltListener listener; |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void startElement(String uri, String localName, String qName, Attributes attributes) |
| throws SAXException { |
| boolean handled = false; |
| if (AFPExtensionAttachment.CATEGORY.equals(uri)) { |
| lastAttributes = new AttributesImpl(attributes); |
| handled = true; |
| if (localName.equals(AFPElementMapping.NO_OPERATION) |
| || localName.equals(AFPElementMapping.TAG_LOGICAL_ELEMENT) |
| || localName.equals(AFPElementMapping.INCLUDE_PAGE_OVERLAY) |
| || localName.equals(AFPElementMapping.INCLUDE_PAGE_SEGMENT) |
| || localName.equals(AFPElementMapping.INCLUDE_FORM_MAP) |
| || localName.equals(AFPElementMapping.INVOKE_MEDIUM_MAP)) { |
| //handled in endElement |
| } else { |
| handled = false; |
| } |
| } |
| if (!handled) { |
| if (AFPExtensionAttachment.CATEGORY.equals(uri)) { |
| throw new SAXException("Unhandled element " + localName |
| + " in namespace: " + uri); |
| } else { |
| log.warn("Unhandled element " + localName |
| + " in namespace: " + uri); |
| } |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void endElement(String uri, String localName, String qName) throws SAXException { |
| if (AFPExtensionAttachment.CATEGORY.equals(uri)) { |
| if (AFPElementMapping.INCLUDE_FORM_MAP.equals(localName)) { |
| AFPIncludeFormMap formMap = new AFPIncludeFormMap(); |
| String name = lastAttributes.getValue("name"); |
| formMap.setName(name); |
| String src = lastAttributes.getValue("src"); |
| try { |
| formMap.setSrc(new URI(src)); |
| } catch (URISyntaxException e) { |
| throw new SAXException("Invalid URI: " + src, e); |
| } |
| this.returnedObject = formMap; |
| } else if (AFPElementMapping.INCLUDE_PAGE_OVERLAY.equals(localName)) { |
| this.returnedObject = new AFPPageOverlay(); |
| String name = lastAttributes.getValue("name"); |
| if (name != null) { |
| returnedObject.setName(name); |
| } |
| } else if (AFPElementMapping.INCLUDE_PAGE_SEGMENT.equals(localName)) { |
| AFPPageSegmentSetup pageSetupExtn = null; |
| |
| pageSetupExtn = new AFPPageSegmentSetup(localName); |
| this.returnedObject = pageSetupExtn; |
| |
| String name = lastAttributes.getValue("name"); |
| if (name != null) { |
| returnedObject.setName(name); |
| } |
| String value = lastAttributes.getValue("value"); |
| if (value != null && pageSetupExtn != null) { |
| pageSetupExtn.setValue(value); |
| } |
| |
| String resourceSrc = lastAttributes.getValue("resource-file"); |
| if (resourceSrc != null && pageSetupExtn != null) { |
| pageSetupExtn.setResourceSrc(resourceSrc); |
| } |
| |
| if (content.length() > 0 && pageSetupExtn != null) { |
| pageSetupExtn.setContent(content.toString()); |
| content.setLength(0); //Reset text buffer (see characters()) |
| } |
| } else { |
| AFPPageSetup pageSetupExtn = null; |
| if (AFPElementMapping.INVOKE_MEDIUM_MAP.equals(localName)) { |
| this.returnedObject = new AFPInvokeMediumMap(); |
| } else { |
| pageSetupExtn = new AFPPageSetup(localName); |
| this.returnedObject = pageSetupExtn; |
| } |
| String name = lastAttributes.getValue(AFPPageSetup.ATT_NAME); |
| if (name != null) { |
| returnedObject.setName(name); |
| } |
| String value = lastAttributes.getValue(AFPPageSetup.ATT_VALUE); |
| if (value != null && pageSetupExtn != null) { |
| pageSetupExtn.setValue(value); |
| } |
| String placement = lastAttributes.getValue(AFPPageSetup.ATT_PLACEMENT); |
| if (placement != null && placement.length() > 0) { |
| pageSetupExtn.setPlacement(ExtensionPlacement.fromXMLValue(placement)); |
| } |
| |
| String encoding = lastAttributes.getValue("encoding"); |
| if (encoding != null && pageSetupExtn != null) { |
| pageSetupExtn.setEncoding(Integer.parseInt(encoding)); |
| } |
| |
| if (content.length() > 0 && pageSetupExtn != null) { |
| pageSetupExtn.setContent(content.toString()); |
| content.setLength(0); //Reset text buffer (see characters()) |
| } |
| } |
| |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void characters(char[] ch, int start, int length) throws SAXException { |
| content.append(ch, start, length); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void endDocument() throws SAXException { |
| if (listener != null) { |
| listener.notifyObjectBuilt(getObject()); |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Object getObject() { |
| return returnedObject; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setObjectBuiltListener(ObjectBuiltListener listen) { |
| this.listener = listen; |
| } |
| |
| } |