1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /* $Id$ */ 19 20 package org.apache.fop.pdf; 21 22 import java.io.IOException; 23 import java.io.OutputStream; 24 25 public class PDFSetOCGStateAction extends PDFNavigatorAction { 26 27 public abstract static class Resolver { 28 private boolean resolved; 29 private PDFSetOCGStateAction action; 30 private Object extension; Resolver(PDFSetOCGStateAction action, Object extension)31 public Resolver(PDFSetOCGStateAction action, Object extension) { 32 this.action = action; 33 this.extension = extension; 34 } getAction()35 public PDFSetOCGStateAction getAction() { 36 return action; 37 } getExtension()38 public Object getExtension() { 39 return extension; 40 } resolve()41 public void resolve() { 42 if (!resolved) { 43 performResolution(); 44 resolved = true; 45 } 46 } performResolution()47 protected void performResolution() { 48 } 49 } 50 51 private Resolver resolver; 52 PDFSetOCGStateAction(String id)53 public PDFSetOCGStateAction(String id) { 54 super(id); 55 put("Type", new PDFName("Action")); 56 put("S", new PDFName("SetOCGState")); 57 } 58 59 @Override output(OutputStream stream)60 public int output(OutputStream stream) throws IOException { 61 if (resolver != null) { 62 resolver.resolve(); 63 } 64 return super.output(stream); 65 } 66 setResolver(Resolver resolver)67 public void setResolver(Resolver resolver) { 68 this.resolver = resolver; 69 } 70 populate(Object state, Object preserveRB, Object nextAction)71 public void populate(Object state, Object preserveRB, Object nextAction) { 72 if (state != null) { 73 put("State", state); 74 } 75 if (preserveRB != null) { 76 put("PreserveRB", preserveRB); 77 } 78 if (nextAction != null) { 79 put("Next", nextAction); 80 } 81 } 82 } 83