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1
49 package com.lowagie.text.pdf;
50
51 import java.io.IOException  ;
52 import java.util.ArrayList ;
53 import java.util.HashMap ;
54 import java.util.Iterator ;
55
56
60 public class PdfStructureTreeRoot extends PdfDictionary {
61
62 private HashMap parentTree = new HashMap ();
63 private PdfIndirectReference reference;
64
65
68 private PdfWriter writer;
69
70
71 PdfStructureTreeRoot(PdfWriter writer) {
72 super(PdfName.STRUCTTREEROOT);
73 this.writer = writer;
74 reference = writer.getPdfIndirectReference();
75 }
76
77
83 public void mapRole(PdfName used, PdfName standard) {
84 PdfDictionary rm = (PdfDictionary)get(PdfName.ROLEMAP);
85 if (rm == null) {
86 rm = new PdfDictionary();
87 put(PdfName.ROLEMAP, rm);
88 }
89 rm.put(used, standard);
90 }
91
92
96 public PdfWriter getWriter() {
97 return this.writer;
98 }
99
100
104 public PdfIndirectReference getReference() {
105 return this.reference;
106 }
107
108 void setPageMark(int page, PdfIndirectReference struc) {
109 Integer i = new Integer (page);
110 PdfArray ar = (PdfArray)parentTree.get(i);
111 if (ar == null) {
112 ar = new PdfArray();
113 parentTree.put(i, ar);
114 }
115 ar.add(struc);
116 }
117
118 private void nodeProcess(PdfDictionary struc, PdfIndirectReference reference) throws IOException {
119 PdfObject obj = struc.get(PdfName.K);
120 if (obj != null && obj.isArray() && !((PdfObject)((PdfArray)obj).getArrayList().get(0)).isNumber()) {
121 PdfArray ar = (PdfArray)obj;
122 ArrayList a = ar.getArrayList();
123 for (int k = 0; k < a.size(); ++k) {
124 PdfStructureElement e = (PdfStructureElement)a.get(k);
125 a.set(k, e.getReference());
126 nodeProcess(e, e.getReference());
127 }
128 }
129 if (reference != null)
130 writer.addToBody(struc, reference);
131 }
132
133 void buildTree() throws IOException {
134 HashMap numTree = new HashMap ();
135 for (Iterator it = parentTree.keySet().iterator(); it.hasNext();) {
136 Integer i = (Integer )it.next();
137 PdfArray ar = (PdfArray)parentTree.get(i);
138 numTree.put(i, writer.addToBody(ar).getIndirectReference());
139 }
140 PdfDictionary dicTree = PdfNumberTree.writeTree(numTree, writer);
141 if (dicTree != null)
142 put(PdfName.PARENTTREE, writer.addToBody(dicTree).getIndirectReference());
143
144 nodeProcess(this, reference);
145 }
146 }
147 |
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