|
1
52
53 package com.lowagie.text.pdf;
54
55 import java.util.ArrayList  ;
56 import java.util.HashMap ;
57 import java.util.Iterator ;
58
59
64
65 public class PRAcroForm extends PdfDictionary {
66
67
70 public static class FieldInformation {
71 String name;
72 PdfDictionary info;
73 PRIndirectReference ref;
74
75 FieldInformation(String name, PdfDictionary info, PRIndirectReference ref) {
76 this.name = name; this.info = info; this.ref = ref;
77 }
78 public String getName() { return name; }
79 public PdfDictionary getInfo() { return info; }
80 public PRIndirectReference getRef() { return ref; }
81 };
82 ArrayList fields;
83 ArrayList stack;
84 HashMap fieldByName;
85 PdfReader reader;
86
87
91 public PRAcroForm(PdfReader reader) {
92 this.reader = reader;
93 fields = new ArrayList ();
94 fieldByName = new HashMap ();
95 stack = new ArrayList ();
96 }
97
101 public int size() {
102 return fields.size();
103 }
104
105 public ArrayList getFields() {
106 return fields;
107 }
108
109 public FieldInformation getField(String name) {
110 return (FieldInformation)fieldByName.get(name);
111 }
112
113
118 public PRIndirectReference getRefByName(String name) {
119 FieldInformation fi = (FieldInformation)fieldByName.get(name);
120 if (fi == null) return null;
121 return fi.getRef();
122 }
123
127 public void readAcroForm(PdfDictionary root) {
128 if (root == null)
129 return;
130 hashMap = root.hashMap;
131 pushAttrib(root);
132 PdfArray fieldlist = (PdfArray)PdfReader.getPdfObjectRelease(root.get(PdfName.FIELDS));
133 iterateFields(fieldlist, null, null);
134 }
135
136
142 protected void iterateFields(PdfArray fieldlist, PRIndirectReference fieldDict, String title) {
143 for (Iterator it = fieldlist.getArrayList().iterator(); it.hasNext();) {
144 PRIndirectReference ref = (PRIndirectReference)it.next();
145 PdfDictionary dict = (PdfDictionary) PdfReader.getPdfObjectRelease(ref);
146
147 PRIndirectReference myFieldDict = fieldDict;
149 String myTitle = title;
150 PdfString tField = (PdfString)dict.get(PdfName.T);
151 boolean isFieldDict = tField != null;
152
153 if (isFieldDict) {
154 myFieldDict = ref;
155 if (title == null) myTitle = tField.toString();
156 else myTitle = title + '.' + tField.toString();
157 }
158
159 PdfArray kids = (PdfArray)dict.get(PdfName.KIDS);
160 if (kids != null) {
161 pushAttrib(dict);
162 iterateFields(kids, myFieldDict, myTitle);
163 stack.remove(stack.size() - 1); }
165 else { if (myFieldDict != null) {
167 PdfDictionary mergedDict = (PdfDictionary)stack.get(stack.size() - 1);
168 if (isFieldDict)
169 mergedDict = mergeAttrib(mergedDict, dict);
170
171 mergedDict.put(PdfName.T, new PdfString(myTitle));
172 FieldInformation fi = new FieldInformation(myTitle, mergedDict, myFieldDict);
173 fields.add(fi);
174 fieldByName.put(myTitle, fi);
175 }
176 }
177 }
178 }
179
185 protected PdfDictionary mergeAttrib(PdfDictionary parent, PdfDictionary child) {
186 PdfDictionary targ = new PdfDictionary();
187 if (parent != null) targ.putAll(parent);
188
189 for (Iterator it = child.getKeys().iterator(); it.hasNext();) {
190 PdfName key = (PdfName) it.next();
191 if (key.equals(PdfName.DR) || key.equals(PdfName.DA) ||
192 key.equals(PdfName.Q) || key.equals(PdfName.FF) ||
193 key.equals(PdfName.DV) || key.equals(PdfName.V)
194 || key.equals(PdfName.FT)
195 || key.equals(PdfName.F)) {
196 targ.put(key,child.get(key));
197 }
198 }
199 return targ;
200 }
201
204 protected void pushAttrib(PdfDictionary dict) {
205 PdfDictionary dic = null;
206 if (!stack.isEmpty()) {
207 dic = (PdfDictionary)stack.get(stack.size() - 1);
208 }
209 dic = mergeAttrib(dic, dict);
210 stack.add(dic);
211 }
212 }
213 |
Popular Tags |
Java API By Example, From Geeks To Geeks.