| /* |
| * 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; |
| |
| // FOP |
| import org.xml.sax.Attributes; |
| import org.xml.sax.Locator; |
| |
| import org.apache.fop.apps.FOPException; |
| import org.apache.fop.fo.FONode; |
| import org.apache.fop.fo.PropertyList; |
| import org.apache.fop.fo.ValidationException; |
| import org.apache.fop.fo.extensions.ExtensionAttachment; |
| |
| /** |
| * Base class for the AFP-specific extension elements. |
| */ |
| public abstract class AbstractAFPExtensionObject extends FONode { |
| |
| /** |
| * the AFP extension attachment |
| */ |
| protected AFPExtensionAttachment extensionAttachment; |
| |
| /** |
| * the element name of this extension |
| */ |
| protected String name; |
| |
| /** |
| * @see org.apache.fop.fo.FONode#FONode(FONode) |
| * @param parent the parent formatting object |
| * @param name the name of the afp element |
| */ |
| public AbstractAFPExtensionObject(FONode parent, String name) { |
| super(parent); |
| this.name = name; |
| } |
| |
| /** {@inheritDoc} */ |
| protected void validateChildNode(Locator loc, String nsURI, String localName) |
| throws ValidationException { |
| if (FO_URI.equals(nsURI)) { |
| invalidChildError(loc, nsURI, localName); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public String getNamespaceURI() { |
| return AFPElementMapping.NAMESPACE; |
| } |
| |
| /** {@inheritDoc} */ |
| public String getNormalNamespacePrefix() { |
| return AFPElementMapping.NAMESPACE_PREFIX; |
| } |
| |
| /** {@inheritDoc} */ |
| public void processNode(String elementName, Locator locator, |
| Attributes attlist, PropertyList propertyList) |
| throws FOPException { |
| getExtensionAttachment(); |
| String attr = attlist.getValue("name"); |
| if (attr != null && attr.length() > 0) { |
| extensionAttachment.setName(attr); |
| } else { |
| throw new FOPException(elementName + " must have a name attribute."); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public void endOfNode() throws FOPException { |
| super.endOfNode(); |
| } |
| |
| /** |
| * Instantiates extension attachment object |
| * @return extension attachment |
| */ |
| protected abstract ExtensionAttachment instantiateExtensionAttachment(); |
| |
| /** {@inheritDoc} */ |
| public ExtensionAttachment getExtensionAttachment() { |
| if (extensionAttachment == null) { |
| this.extensionAttachment = (AFPExtensionAttachment)instantiateExtensionAttachment(); |
| } |
| return this.extensionAttachment; |
| } |
| |
| /** {@inheritDoc} */ |
| public String getLocalName() { |
| return name; |
| } |
| } |