| /* |
| * 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.intermediate; |
| |
| import java.util.Locale; |
| |
| import org.apache.fop.accessibility.DummyStructureTreeEventHandler; |
| import org.apache.fop.accessibility.StructureTreeEventHandler; |
| import org.apache.fop.apps.FOUserAgent; |
| |
| /** |
| * Abstract base class for {@link IFDocumentHandler} implementations. |
| */ |
| public abstract class AbstractIFDocumentHandler implements IFDocumentHandler { |
| |
| private final IFContext ifContext; |
| |
| /** |
| * Default constructor. |
| */ |
| protected AbstractIFDocumentHandler(IFContext context) { |
| this.ifContext = context; |
| } |
| |
| |
| /** {@inheritDoc} */ |
| public IFContext getContext() { |
| return this.ifContext; |
| } |
| |
| /** |
| * Returns the associated user agent. |
| * @return the user agent |
| */ |
| public FOUserAgent getUserAgent() { |
| return getContext().getUserAgent(); |
| } |
| |
| /** {@inheritDoc} */ |
| public StructureTreeEventHandler getStructureTreeEventHandler() { |
| return DummyStructureTreeEventHandler.INSTANCE; |
| } |
| |
| /** {@inheritDoc} */ |
| public IFDocumentNavigationHandler getDocumentNavigationHandler() { |
| return null; //By default, this is not supported |
| } |
| |
| /** {@inheritDoc} */ |
| public void startDocument() throws IFException { |
| if (getUserAgent() == null) { |
| throw new IllegalStateException( |
| "User agent must be set before starting document generation"); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public void setDocumentLocale(Locale locale) { |
| } |
| |
| /** {@inheritDoc} */ |
| public void startDocumentHeader() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void endDocumentHeader() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void startDocumentTrailer() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void endDocumentTrailer() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void startPageHeader() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void endPageHeader() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void startPageTrailer() throws IFException { |
| //nop |
| } |
| |
| /** {@inheritDoc} */ |
| public void endPageTrailer() throws IFException { |
| //nop |
| } |
| } |