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/*
* $Id: AcroFields.java 6344 2014-04-29 13:06:21Z michaeldemey $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2014 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.*;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.io.RASInputStream;
import com.itextpdf.text.io.RandomAccessSourceFactory;
import com.itextpdf.text.io.WindowRandomAccessSource;
import com.itextpdf.text.pdf.PRTokeniser.TokenType;
import com.itextpdf.text.pdf.codec.Base64;
import com.itextpdf.text.pdf.security.PdfPKCS7;
import com.itextpdf.text.xml.XmlToTxt;
import org.w3c.dom.Node;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.*;
import java.util.List;
/**
* Query and change fields in existing documents either by method
* calls or by FDF merging.
*
* @author Paulo Soares
*/
public class AcroFields {
PdfReader reader;
PdfWriter writer;
Map fields;
private int topFirst;
private HashMap sigNames;
private boolean append;
public static final int DA_FONT = 0;
public static final int DA_SIZE = 1;
public static final int DA_COLOR = 2;
private HashMap extensionFonts = new HashMap();
private XfaForm xfa;
/**
* A field type invalid or not found.
*/
public static final int FIELD_TYPE_NONE = 0;
/**
* A field type.
*/
public static final int FIELD_TYPE_PUSHBUTTON = 1;
/**
* A field type.
*/
public static final int FIELD_TYPE_CHECKBOX = 2;
/**
* A field type.
*/
public static final int FIELD_TYPE_RADIOBUTTON = 3;
/**
* A field type.
*/
public static final int FIELD_TYPE_TEXT = 4;
/**
* A field type.
*/
public static final int FIELD_TYPE_LIST = 5;
/**
* A field type.
*/
public static final int FIELD_TYPE_COMBO = 6;
/**
* A field type.
*/
public static final int FIELD_TYPE_SIGNATURE = 7;
private boolean lastWasString;
/** Holds value of property generateAppearances. */
private boolean generateAppearances = true;
private HashMap localFonts = new HashMap();
private float extraMarginLeft;
private float extraMarginTop;
private ArrayList();
PdfDictionary top = (PdfDictionary)PdfReader.getPdfObjectRelease(reader.getCatalog().get(PdfName.ACROFORM));
if (top == null)
return;
PdfBoolean needappearances = top.getAsBoolean(PdfName.NEEDAPPEARANCES);
if (needappearances == null || !needappearances.booleanValue())
setGenerateAppearances(true);
else
setGenerateAppearances(false);
PdfArray arrfds = (PdfArray)PdfReader.getPdfObjectRelease(top.get(PdfName.FIELDS));
if (arrfds == null || arrfds.size() == 0)
return;
for (int k = 1; k <= reader.getNumberOfPages(); ++k) {
PdfDictionary page = reader.getPageNRelease(k);
PdfArray annots = (PdfArray)PdfReader.getPdfObjectRelease(page.get(PdfName.ANNOTS), page);
if (annots == null)
continue;
for (int j = 0; j < annots.size(); ++j) {
PdfDictionary annot = annots.getAsDict(j);
if (annot == null) {
PdfReader.releaseLastXrefPartial(annots.getAsIndirectObject(j));
continue;
}
if (!PdfName.WIDGET.equals(annot.getAsName(PdfName.SUBTYPE))) {
PdfReader.releaseLastXrefPartial(annots.getAsIndirectObject(j));
continue;
}
PdfDictionary widget = annot;
PdfDictionary dic = new PdfDictionary();
dic.putAll(annot);
String name = "";
PdfDictionary value = null;
PdfObject lastV = null;
while (annot != null) {
dic.mergeDifferent(annot);
PdfString t = annot.getAsString(PdfName.T);
if (t != null)
name = t.toUnicodeString() + "." + name;
if (lastV == null && annot.get(PdfName.V) != null)
lastV = PdfReader.getPdfObjectRelease(annot.get(PdfName.V));
if (value == null && t != null) {
value = annot;
if (annot.get(PdfName.V) == null && lastV != null)
value.put(PdfName.V, lastV);
}
annot = annot.getAsDict(PdfName.PARENT);
}
if (name.length() > 0)
name = name.substring(0, name.length() - 1);
Item item = fields.get(name);
if (item == null) {
item = new Item();
fields.put(name, item);
}
if (value == null)
item.addValue(widget);
else
item.addValue(value);
item.addWidget(widget);
item.addWidgetRef(annots.getAsIndirectObject(j)); // must be a reference
if (top != null)
dic.mergeDifferent(top);
item.addMerged(dic);
item.addPage(k);
item.addTabOrder(j);
}
}
// some tools produce invisible signatures without an entry in the page annotation array
// look for a single level annotation
PdfNumber sigFlags = top.getAsNumber(PdfName.SIGFLAGS);
if (sigFlags == null || (sigFlags.intValue() & 1) != 1)
return;
for (int j = 0; j < arrfds.size(); ++j) {
PdfDictionary annot = arrfds.getAsDict(j);
if (annot == null) {
PdfReader.releaseLastXrefPartial(arrfds.getAsIndirectObject(j));
continue;
}
if (!PdfName.WIDGET.equals(annot.getAsName(PdfName.SUBTYPE))) {
PdfReader.releaseLastXrefPartial(arrfds.getAsIndirectObject(j));
continue;
}
PdfArray kids = (PdfArray)PdfReader.getPdfObjectRelease(annot.get(PdfName.KIDS));
if (kids != null)
continue;
PdfDictionary dic = new PdfDictionary();
dic.putAll(annot);
PdfString t = annot.getAsString(PdfName.T);
if (t == null)
continue;
String name = t.toUnicodeString();
if (fields.containsKey(name))
continue;
Item item = new Item();
fields.put(name, item);
item.addValue(dic);
item.addWidget(dic);
item.addWidgetRef(arrfds.getAsIndirectObject(j)); // must be a reference
item.addMerged(dic);
item.addPage(-1);
item.addTabOrder(-1);
}
}
/**
* Gets the list of appearance names. Use it to get the names allowed
* with radio and checkbox fields. If the /Opt key exists the values will
* also be included. The name 'Off' may also be valid
* even if not returned in the list.
*
* For Comboboxes it will return an array of display values. To extract the
* export values of a Combobox, please refer to {@link AcroFields#getListOptionExport(String)}
*
* @param fieldName the fully qualified field name
* @return the list of names or null if the field does not exist
*/
public String[] getAppearanceStates(String fieldName) {
Item fd = fields.get(fieldName);
if (fd == null)
return null;
HashSet names = new LinkedHashSet();
PdfDictionary vals = fd.getValue(0);
PdfString stringOpt = vals.getAsString( PdfName.OPT );
// should not happen according to specs
if (stringOpt != null) {
names.add(stringOpt.toUnicodeString());
}
else {
PdfArray arrayOpt = vals.getAsArray(PdfName.OPT);
if (arrayOpt != null) {
for (int k = 0; k < arrayOpt.size(); ++k) {
PdfObject pdfObject = arrayOpt.getDirectObject(k);
PdfString valStr = null;
switch ( pdfObject.type() ) {
case PdfObject.ARRAY:
PdfArray pdfArray = (PdfArray) pdfObject;
valStr = pdfArray.getAsString( 1 );
break;
case PdfObject.STRING:
valStr = (PdfString) pdfObject;
break;
}
if (valStr != null)
names.add(valStr.toUnicodeString());
}
}
}
for (int k = 0; k < fd.size(); ++k) {
PdfDictionary dic = fd.getWidget( k );
dic = dic.getAsDict(PdfName.AP);
if (dic == null)
continue;
dic = dic.getAsDict(PdfName.N);
if (dic == null)
continue;
for (Object element : dic.getKeys()) {
String name = PdfName.decodeName(((PdfName)element).toString());
names.add(name);
}
}
String out[] = new String[names.size()];
return names.toArray(out);
}
private String[] getListOption(String fieldName, int idx) {
Item fd = getFieldItem(fieldName);
if (fd == null)
return null;
PdfArray ar = fd.getMerged(0).getAsArray(PdfName.OPT);
if (ar == null)
return null;
String[] ret = new String[ar.size()];
for (int k = 0; k < ar.size(); ++k) {
PdfObject obj = ar.getDirectObject( k );
try {
if (obj.isArray()) {
obj = ((PdfArray)obj).getDirectObject(idx);
}
if (obj.isString())
ret[k] = ((PdfString)obj).toUnicodeString();
else
ret[k] = obj.toString();
}
catch (Exception e) {
ret[k] = "";
}
}
return ret;
}
/**
* Gets the list of export option values from fields of type list or combo.
* If the field doesn't exist or the field type is not list or combo it will return
* null.
*
* @param fieldName the field name
* @return the list of export option values from fields of type list or combo
*/
public String[] getListOptionExport(String fieldName) {
return getListOption(fieldName, 0);
}
/**
* Gets the list of display option values from fields of type list or combo.
* If the field doesn't exist or the field type is not list or combo it will return
* null.
*
* @param fieldName the field name
* @return the list of export option values from fields of type list or combo
*/
public String[] getListOptionDisplay(String fieldName) {
return getListOption(fieldName, 1);
}
/**
* Sets the option list for fields of type list or combo. One of exportValues
* or displayValues may be null but not both. This method will only
* set the list but will not set the value or appearance. For that, calling setField()
* is required.
*
* An example:
*
*
* PdfReader pdf = new PdfReader("input.pdf");
* PdfStamper stp = new PdfStamper(pdf, new FileOutputStream("output.pdf"));
* AcroFields af = stp.getAcroFields();
* af.setListOption("ComboBox", new String[]{"a", "b", "c"}, new String[]{"first", "second", "third"});
* af.setField("ComboBox", "b");
* stp.close();
*
*
* @param fieldName the field name
* @param exportValues the export values
* @param displayValues the display values
* @return true if the operation succeeded, false otherwise
*/
public boolean setListOption(String fieldName, String[] exportValues, String[] displayValues) {
if (exportValues == null && displayValues == null)
return false;
if (exportValues != null && displayValues != null && exportValues.length != displayValues.length)
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("the.export.and.the.display.array.must.have.the.same.size"));
int ftype = getFieldType(fieldName);
if (ftype != FIELD_TYPE_COMBO && ftype != FIELD_TYPE_LIST)
return false;
Item fd = fields.get(fieldName);
String[] sing = null;
if (exportValues == null && displayValues != null)
sing = displayValues;
else if (exportValues != null && displayValues == null)
sing = exportValues;
PdfArray opt = new PdfArray();
if (sing != null) {
for (int k = 0; k < sing.length; ++k)
opt.add(new PdfString(sing[k], PdfObject.TEXT_UNICODE));
}
else {
for (int k = 0; k < exportValues.length; ++k) {
PdfArray a = new PdfArray();
a.add(new PdfString(exportValues[k], PdfObject.TEXT_UNICODE));
a.add(new PdfString(displayValues[k], PdfObject.TEXT_UNICODE));
opt.add(a);
}
}
fd.writeToAll( PdfName.OPT, opt, Item.WRITE_VALUE | Item.WRITE_MERGED );
return true;
}
/**
* Gets the field type. The type can be one of: FIELD_TYPE_PUSHBUTTON,
* FIELD_TYPE_CHECKBOX, FIELD_TYPE_RADIOBUTTON,
* FIELD_TYPE_TEXT, FIELD_TYPE_LIST,
* FIELD_TYPE_COMBO or FIELD_TYPE_SIGNATURE.
*
* If the field does not exist or is invalid it returns
* FIELD_TYPE_NONE.
*
* @param fieldName the field name
* @return the field type
*/
public int getFieldType(String fieldName) {
Item fd = getFieldItem(fieldName);
if (fd == null)
return FIELD_TYPE_NONE;
PdfDictionary merged = fd.getMerged( 0 );
PdfName type = merged.getAsName(PdfName.FT);
if (type == null)
return FIELD_TYPE_NONE;
int ff = 0;
PdfNumber ffo = merged.getAsNumber(PdfName.FF);
if (ffo != null) {
ff = ffo.intValue();
}
if (PdfName.BTN.equals(type)) {
if ((ff & PdfFormField.FF_PUSHBUTTON) != 0)
return FIELD_TYPE_PUSHBUTTON;
if ((ff & PdfFormField.FF_RADIO) != 0)
return FIELD_TYPE_RADIOBUTTON;
else
return FIELD_TYPE_CHECKBOX;
}
else if (PdfName.TX.equals(type)) {
return FIELD_TYPE_TEXT;
}
else if (PdfName.CH.equals(type)) {
if ((ff & PdfFormField.FF_COMBO) != 0)
return FIELD_TYPE_COMBO;
else
return FIELD_TYPE_LIST;
}
else if (PdfName.SIG.equals(type)) {
return FIELD_TYPE_SIGNATURE;
}
return FIELD_TYPE_NONE;
}
/**
* Export the fields as a FDF.
*
* @param writer the FDF writer
*/
public void exportAsFdf(FdfWriter writer) {
for (Map.Entry entry : fields.entrySet()) {
Item item = entry.getValue();
String name = entry.getKey();
PdfObject v = item.getMerged(0).get(PdfName.V);
if (v == null)
continue;
String value = getField(name);
if (lastWasString)
writer.setFieldAsString(name, value);
else
writer.setFieldAsName(name, value);
}
}
/**
* Renames a field. Only the last part of the name can be renamed. For example,
* if the original field is "ab.cd.ef" only the "ef" part can be renamed.
*
* @param oldName the old field name
* @param newName the new field name
* @return true if the renaming was successful, false
* otherwise
*/
public boolean renameField(String oldName, String newName) {
int idx1 = oldName.lastIndexOf('.') + 1;
int idx2 = newName.lastIndexOf('.') + 1;
if (idx1 != idx2)
return false;
if (!oldName.substring(0, idx1).equals(newName.substring(0, idx2)))
return false;
if (fields.containsKey(newName))
return false;
Item item = fields.get(oldName);
if (item == null)
return false;
newName = newName.substring(idx2);
PdfString ss = new PdfString(newName, PdfObject.TEXT_UNICODE);
item.writeToAll( PdfName.T, ss, Item.WRITE_VALUE | Item.WRITE_MERGED);
item.markUsed( this, Item.WRITE_VALUE );
fields.remove(oldName);
fields.put(newName, item);
return true;
}
public static Object[] splitDAelements(String da) {
try {
PRTokeniser tk = new PRTokeniser(new RandomAccessFileOrArray(new RandomAccessSourceFactory().createSource(PdfEncodings.convertToBytes(da, null))));
ArrayList stack = new ArrayList();
Object ret[] = new Object[3];
while (tk.nextToken()) {
if (tk.getTokenType() == TokenType.COMMENT)
continue;
if (tk.getTokenType() == TokenType.OTHER) {
String operator = tk.getStringValue();
if (operator.equals("Tf")) {
if (stack.size() >= 2) {
ret[DA_FONT] = stack.get(stack.size() - 2);
ret[DA_SIZE] = new Float(stack.get(stack.size() - 1));
}
}
else if (operator.equals("g")) {
if (stack.size() >= 1) {
float gray = new Float(stack.get(stack.size() - 1)).floatValue();
if (gray != 0)
ret[DA_COLOR] = new GrayColor(gray);
}
}
else if (operator.equals("rg")) {
if (stack.size() >= 3) {
float red = new Float(stack.get(stack.size() - 3)).floatValue();
float green = new Float(stack.get(stack.size() - 2)).floatValue();
float blue = new Float(stack.get(stack.size() - 1)).floatValue();
ret[DA_COLOR] = new BaseColor(red, green, blue);
}
}
else if (operator.equals("k")) {
if (stack.size() >= 4) {
float cyan = new Float(stack.get(stack.size() - 4)).floatValue();
float magenta = new Float(stack.get(stack.size() - 3)).floatValue();
float yellow = new Float(stack.get(stack.size() - 2)).floatValue();
float black = new Float(stack.get(stack.size() - 1)).floatValue();
ret[DA_COLOR] = new CMYKColor(cyan, magenta, yellow, black);
}
}
stack.clear();
}
else
stack.add(tk.getStringValue());
}
return ret;
}
catch (IOException ioe) {
throw new ExceptionConverter(ioe);
}
}
public void decodeGenericDictionary(PdfDictionary merged, BaseField tx) throws IOException, DocumentException {
int flags = 0;
// the text size and color
PdfString da = merged.getAsString(PdfName.DA);
if (da != null) {
Object dab[] = splitDAelements(da.toUnicodeString());
if (dab[DA_SIZE] != null)
tx.setFontSize(((Float)dab[DA_SIZE]).floatValue());
if (dab[DA_COLOR] != null)
tx.setTextColor((BaseColor)dab[DA_COLOR]);
if (dab[DA_FONT] != null) {
PdfDictionary font = merged.getAsDict(PdfName.DR);
if (font != null) {
font = font.getAsDict(PdfName.FONT);
if (font != null) {
PdfObject po = font.get(new PdfName((String)dab[DA_FONT]));
if (po != null && po.type() == PdfObject.INDIRECT) {
PRIndirectReference por = (PRIndirectReference)po;
BaseFont bp = new DocumentFont((PRIndirectReference)po);
tx.setFont(bp);
Integer porkey = Integer.valueOf(por.getNumber());
BaseFont porf = extensionFonts.get(porkey);
if (porf == null) {
if (!extensionFonts.containsKey(porkey)) {
PdfDictionary fo = (PdfDictionary)PdfReader.getPdfObject(po);
PdfDictionary fd = fo.getAsDict(PdfName.FONTDESCRIPTOR);
if (fd != null) {
PRStream prs = (PRStream)PdfReader.getPdfObject(fd.get(PdfName.FONTFILE2));
if (prs == null)
prs = (PRStream)PdfReader.getPdfObject(fd.get(PdfName.FONTFILE3));
if (prs == null) {
extensionFonts.put(porkey, null);
}
else {
try {
porf = BaseFont.createFont("font.ttf", BaseFont.IDENTITY_H, true, false, PdfReader.getStreamBytes(prs), null);
}
catch (Exception e) {
}
extensionFonts.put(porkey, porf);
}
}
}
}
if (tx instanceof TextField)
((TextField)tx).setExtensionFont(porf);
}
else {
BaseFont bf = localFonts.get(dab[DA_FONT]);
if (bf == null) {
String fn[] = stdFieldFontNames.get(dab[DA_FONT]);
if (fn != null) {
try {
String enc = "winansi";
if (fn.length > 1)
enc = fn[1];
bf = BaseFont.createFont(fn[0], enc, false);
tx.setFont(bf);
}
catch (Exception e) {
// empty
}
}
}
else
tx.setFont(bf);
}
}
}
}
}
//rotation, border and background color
PdfDictionary mk = merged.getAsDict(PdfName.MK);
if (mk != null) {
PdfArray ar = mk.getAsArray(PdfName.BC);
BaseColor border = getMKColor(ar);
tx.setBorderColor(border);
if (border != null)
tx.setBorderWidth(1);
ar = mk.getAsArray(PdfName.BG);
tx.setBackgroundColor(getMKColor(ar));
PdfNumber rotation = mk.getAsNumber(PdfName.R);
if (rotation != null)
tx.setRotation(rotation.intValue());
}
//flags
PdfNumber nfl = merged.getAsNumber(PdfName.F);
flags = 0;
tx.setVisibility(BaseField.VISIBLE_BUT_DOES_NOT_PRINT);
if (nfl != null) {
flags = nfl.intValue();
if ((flags & PdfFormField.FLAGS_PRINT) != 0 && (flags & PdfFormField.FLAGS_HIDDEN) != 0)
tx.setVisibility(BaseField.HIDDEN);
else if ((flags & PdfFormField.FLAGS_PRINT) != 0 && (flags & PdfFormField.FLAGS_NOVIEW) != 0)
tx.setVisibility(BaseField.HIDDEN_BUT_PRINTABLE);
else if ((flags & PdfFormField.FLAGS_PRINT) != 0)
tx.setVisibility(BaseField.VISIBLE);
}
//multiline
nfl = merged.getAsNumber(PdfName.FF);
flags = 0;
if (nfl != null)
flags = nfl.intValue();
tx.setOptions(flags);
if ((flags & PdfFormField.FF_COMB) != 0) {
PdfNumber maxLen = merged.getAsNumber(PdfName.MAXLEN);
int len = 0;
if (maxLen != null)
len = maxLen.intValue();
tx.setMaxCharacterLength(len);
}
//alignment
nfl = merged.getAsNumber(PdfName.Q);
if (nfl != null) {
if (nfl.intValue() == PdfFormField.Q_CENTER)
tx.setAlignment(Element.ALIGN_CENTER);
else if (nfl.intValue() == PdfFormField.Q_RIGHT)
tx.setAlignment(Element.ALIGN_RIGHT);
}
//border styles
PdfDictionary bs = merged.getAsDict(PdfName.BS);
if (bs != null) {
PdfNumber w = bs.getAsNumber(PdfName.W);
if (w != null)
tx.setBorderWidth(w.floatValue());
PdfName s = bs.getAsName(PdfName.S);
if (PdfName.D.equals(s))
tx.setBorderStyle(PdfBorderDictionary.STYLE_DASHED);
else if (PdfName.B.equals(s))
tx.setBorderStyle(PdfBorderDictionary.STYLE_BEVELED);
else if (PdfName.I.equals(s))
tx.setBorderStyle(PdfBorderDictionary.STYLE_INSET);
else if (PdfName.U.equals(s))
tx.setBorderStyle(PdfBorderDictionary.STYLE_UNDERLINE);
}
else {
PdfArray bd = merged.getAsArray(PdfName.BORDER);
if (bd != null) {
if (bd.size() >= 3)
tx.setBorderWidth(bd.getAsNumber(2).floatValue());
if (bd.size() >= 4)
tx.setBorderStyle(PdfBorderDictionary.STYLE_DASHED);
}
}
}
PdfAppearance getAppearance(PdfDictionary merged, String values[], String fieldName) throws IOException, DocumentException {
topFirst = 0;
String text = values.length > 0 ? values[0] : null;
TextField tx = null;
if (fieldCache == null || !fieldCache.containsKey(fieldName)) {
tx = new TextField(writer, null, null);
tx.setExtraMargin(extraMarginLeft, extraMarginTop);
tx.setBorderWidth(0);
tx.setSubstitutionFonts(substitutionFonts);
decodeGenericDictionary(merged, tx);
//rect
PdfArray rect = merged.getAsArray(PdfName.RECT);
Rectangle box = PdfReader.getNormalizedRectangle(rect);
if (tx.getRotation() == 90 || tx.getRotation() == 270)
box = box.rotate();
tx.setBox(box);
if (fieldCache != null)
fieldCache.put(fieldName, tx);
}
else {
tx = fieldCache.get(fieldName);
tx.setWriter(writer);
}
PdfName fieldType = merged.getAsName(PdfName.FT);
if (PdfName.TX.equals(fieldType)) {
if (values.length > 0 && values[0] != null) {
tx.setText(values[0]);
}
return tx.getAppearance();
}
if (!PdfName.CH.equals(fieldType))
throw new DocumentException(MessageLocalization.getComposedMessage("an.appearance.was.requested.without.a.variable.text.field"));
PdfArray opt = merged.getAsArray(PdfName.OPT);
int flags = 0;
PdfNumber nfl = merged.getAsNumber(PdfName.FF);
if (nfl != null)
flags = nfl.intValue();
if ((flags & PdfFormField.FF_COMBO) != 0 && opt == null) {
tx.setText(text);
return tx.getAppearance();
}
if (opt != null) {
String choices[] = new String[opt.size()];
String choicesExp[] = new String[opt.size()];
for (int k = 0; k < opt.size(); ++k) {
PdfObject obj = opt.getPdfObject(k);
if (obj.isString()) {
choices[k] = choicesExp[k] = ((PdfString)obj).toUnicodeString();
}
else {
PdfArray a = (PdfArray) obj;
choicesExp[k] = a.getAsString(0).toUnicodeString();
choices[k] = a.getAsString(1).toUnicodeString();
}
}
if ((flags & PdfFormField.FF_COMBO) != 0) {
for (int k = 0; k < choices.length; ++k) {
if (text.equals(choicesExp[k])) {
text = choices[k];
break;
}
}
tx.setText(text);
return tx.getAppearance();
}
ArrayList indexes = new ArrayList();
for (int k = 0; k < choicesExp.length; ++k) {
for (int j = 0; j < values.length; ++j) {
String val = values[j];
if (val != null && val.equals(choicesExp[k])) {
indexes.add( Integer.valueOf( k ) );
break;
}
}
}
tx.setChoices(choices);
tx.setChoiceExports(choicesExp);
tx.setChoiceSelections( indexes );
}
PdfAppearance app = tx.getListAppearance();
topFirst = tx.getTopFirst();
return app;
}
PdfAppearance getAppearance(PdfDictionary merged, String text, String fieldName) throws IOException, DocumentException {
String valueArr[] = new String[1];
valueArr[0] = text;
return getAppearance( merged, valueArr, fieldName );
}
BaseColor getMKColor(PdfArray ar) {
if (ar == null)
return null;
switch (ar.size()) {
case 1:
return new GrayColor(ar.getAsNumber(0).floatValue());
case 3:
return new BaseColor(ExtendedColor.normalize(ar.getAsNumber(0).floatValue()), ExtendedColor.normalize(ar.getAsNumber(1).floatValue()), ExtendedColor.normalize(ar.getAsNumber(2).floatValue()));
case 4:
return new CMYKColor(ar.getAsNumber(0).floatValue(), ar.getAsNumber(1).floatValue(), ar.getAsNumber(2).floatValue(), ar.getAsNumber(3).floatValue());
default:
return null;
}
}
/**
* Retrieve the rich value for the given field
* @param name
* @return The rich value if present, or null.
* @since 5.0.6
*/
public String getFieldRichValue(String name) {
if (xfa.isXfaPresent()) {
return null;
}
Item item = fields.get(name);
if (item == null) {
return null;
}
PdfDictionary merged = item.getMerged(0);
PdfString rich = merged.getAsString(PdfName.RV);
String markup = null;
if (rich != null) {
markup = rich.toString();
}
return markup;
}
/**
* Gets the field value.
*
* @param name the fully qualified field name
* @return the field value
*/
public String getField(String name) {
if (xfa.isXfaPresent()) {
name = xfa.findFieldName(name, this);
if (name == null)
return null;
name = XfaForm.Xml2Som.getShortName(name);
return XfaForm.getNodeText(xfa.findDatasetsNode(name));
}
Item item = fields.get(name);
if (item == null)
return null;
lastWasString = false;
PdfDictionary mergedDict = item.getMerged( 0 );
// Jose A. Rodriguez posted a fix to the mailing list (May 11, 2009)
// explaining that the value can also be a stream value
// the fix was made against an old iText version. Bruno adapted it.
PdfObject v = PdfReader.getPdfObject(mergedDict.get(PdfName.V));
if (v == null)
return "";
if (v instanceof PRStream) {
byte[] valBytes;
try {
valBytes = PdfReader.getStreamBytes((PRStream)v);
return new String(valBytes);
} catch (IOException e) {
throw new ExceptionConverter(e);
}
}
PdfName type = mergedDict.getAsName(PdfName.FT);
if (PdfName.BTN.equals(type)) {
PdfNumber ff = mergedDict.getAsNumber(PdfName.FF);
int flags = 0;
if (ff != null)
flags = ff.intValue();
if ((flags & PdfFormField.FF_PUSHBUTTON) != 0)
return "";
String value = "";
if (v instanceof PdfName)
value = PdfName.decodeName(v.toString());
else if (v instanceof PdfString)
value = ((PdfString)v).toUnicodeString();
PdfArray opts = item.getValue(0).getAsArray(PdfName.OPT);
if (opts != null) {
int idx = 0;
try {
idx = Integer.parseInt(value);
PdfString ps = opts.getAsString(idx);
value = ps.toUnicodeString();
lastWasString = true;
}
catch (Exception e) {
}
}
return value;
}
if (v instanceof PdfString) {
lastWasString = true;
return ((PdfString)v).toUnicodeString();
} else if (v instanceof PdfName) {
return PdfName.decodeName(v.toString());
} else
return "";
}
/**
* Gets the field values of a Choice field.
*
* @param name the fully qualified field name
* @return the field value
* @since 2.1.3
*/
public String[] getListSelection(String name) {
String[] ret;
String s = getField(name);
if (s == null) {
ret = new String[]{};
}
else {
ret = new String[]{ s };
}
Item item = fields.get(name);
if (item == null)
return ret;
//PdfName type = (PdfName)PdfReader.getPdfObject(((PdfDictionary)item.merged.get(0)).get(PdfName.FT));
//if (!PdfName.CH.equals(type)) {
// return ret;
//}
PdfArray values = item.getMerged(0).getAsArray(PdfName.I);
if (values == null)
return ret;
ret = new String[values.size()];
String[] options = getListOptionExport(name);
PdfNumber n;
int idx = 0;
for (Iterator i = values.listIterator(); i.hasNext(); ) {
n = (PdfNumber)i.next();
ret[idx++] = options[n.intValue()];
}
return ret;
}
/**
* Sets a field property. Valid property names are:
*
*
* - textfont - sets the text font. The value for this entry is a
BaseFont.
* - textcolor - sets the text color. The value for this entry is a
BaseColor.
* - textsize - sets the text size. The value for this entry is a
Float.
* - bgcolor - sets the background color. The value for this entry is a
BaseColor.
* If null removes the background.
* - bordercolor - sets the border color. The value for this entry is a
BaseColor.
* If null removes the border.
*
*
* @param field the field name
* @param name the property name
* @param value the property value
* @param inst an array of int indexing into AcroField.Item.merged elements to process.
* Set to null to process all
* @return true if the property exists, false otherwise
*/
public boolean setFieldProperty(String field, String name, Object value, int inst[]) {
if (writer == null)
throw new RuntimeException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));
try {
Item item = fields.get(field);
if (item == null)
return false;
InstHit hit = new InstHit(inst);
PdfDictionary merged;
PdfString da;
if (name.equalsIgnoreCase("textfont")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
merged = item.getMerged( k );
da = merged.getAsString(PdfName.DA);
PdfDictionary dr = merged.getAsDict(PdfName.DR);
if (da != null) {
if (dr == null) {
dr = new PdfDictionary();
merged.put(PdfName.DR, dr);
}
Object dao[] = splitDAelements(da.toUnicodeString());
PdfAppearance cb = new PdfAppearance();
if (dao[DA_FONT] != null) {
BaseFont bf = (BaseFont)value;
PdfName psn = PdfAppearance.stdFieldFontNames.get(bf.getPostscriptFontName());
if (psn == null) {
psn = new PdfName(bf.getPostscriptFontName());
}
PdfDictionary fonts = dr.getAsDict(PdfName.FONT);
if (fonts == null) {
fonts = new PdfDictionary();
dr.put(PdfName.FONT, fonts);
}
PdfIndirectReference fref = (PdfIndirectReference)fonts.get(psn);
PdfDictionary top = reader.getCatalog().getAsDict(PdfName.ACROFORM);
markUsed(top);
dr = top.getAsDict(PdfName.DR);
if (dr == null) {
dr = new PdfDictionary();
top.put(PdfName.DR, dr);
}
markUsed(dr);
PdfDictionary fontsTop = dr.getAsDict(PdfName.FONT);
if (fontsTop == null) {
fontsTop = new PdfDictionary();
dr.put(PdfName.FONT, fontsTop);
}
markUsed(fontsTop);
PdfIndirectReference frefTop = (PdfIndirectReference)fontsTop.get(psn);
if (frefTop != null) {
if (fref == null)
fonts.put(psn, frefTop);
}
else if (fref == null) {
FontDetails fd;
if (bf.getFontType() == BaseFont.FONT_TYPE_DOCUMENT) {
fd = new FontDetails(null, ((DocumentFont)bf).getIndirectReference(), bf);
}
else {
bf.setSubset(false);
fd = writer.addSimple(bf);
localFonts.put(psn.toString().substring(1), bf);
}
fontsTop.put(psn, fd.getIndirectReference());
fonts.put(psn, fd.getIndirectReference());
}
ByteBuffer buf = cb.getInternalBuffer();
buf.append(psn.getBytes()).append(' ').append(((Float)dao[DA_SIZE]).floatValue()).append(" Tf ");
if (dao[DA_COLOR] != null)
cb.setColorFill((BaseColor)dao[DA_COLOR]);
PdfString s = new PdfString(cb.toString());
item.getMerged(k).put(PdfName.DA, s);
item.getWidget(k).put(PdfName.DA, s);
markUsed(item.getWidget(k));
}
}
}
}
}
else if (name.equalsIgnoreCase("textcolor")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
merged = item.getMerged( k );
da = merged.getAsString(PdfName.DA);
if (da != null) {
Object dao[] = splitDAelements(da.toUnicodeString());
PdfAppearance cb = new PdfAppearance();
if (dao[DA_FONT] != null) {
ByteBuffer buf = cb.getInternalBuffer();
buf.append(new PdfName((String)dao[DA_FONT]).getBytes()).append(' ').append(((Float)dao[DA_SIZE]).floatValue()).append(" Tf ");
cb.setColorFill((BaseColor)value);
PdfString s = new PdfString(cb.toString());
item.getMerged(k).put(PdfName.DA, s);
item.getWidget(k).put(PdfName.DA, s);
markUsed(item.getWidget(k));
}
}
}
}
}
else if (name.equalsIgnoreCase("textsize")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
merged = item.getMerged( k );
da = merged.getAsString(PdfName.DA);
if (da != null) {
Object dao[] = splitDAelements(da.toUnicodeString());
PdfAppearance cb = new PdfAppearance();
if (dao[DA_FONT] != null) {
ByteBuffer buf = cb.getInternalBuffer();
buf.append(new PdfName((String)dao[DA_FONT]).getBytes()).append(' ').append(((Float)value).floatValue()).append(" Tf ");
if (dao[DA_COLOR] != null)
cb.setColorFill((BaseColor)dao[DA_COLOR]);
PdfString s = new PdfString(cb.toString());
item.getMerged(k).put(PdfName.DA, s);
item.getWidget(k).put(PdfName.DA, s);
markUsed(item.getWidget(k));
}
}
}
}
}
else if (name.equalsIgnoreCase("bgcolor") || name.equalsIgnoreCase("bordercolor")) {
PdfName dname = name.equalsIgnoreCase("bgcolor") ? PdfName.BG : PdfName.BC;
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
merged = item.getMerged( k );
PdfDictionary mk = merged.getAsDict(PdfName.MK);
if (mk == null) {
if (value == null)
return true;
mk = new PdfDictionary();
item.getMerged(k).put(PdfName.MK, mk);
item.getWidget(k).put(PdfName.MK, mk);
markUsed(item.getWidget(k));
} else {
markUsed( mk );
}
if (value == null)
mk.remove(dname);
else
mk.put(dname, PdfFormField.getMKColor((BaseColor)value));
}
}
}
else
return false;
return true;
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Sets a field property. Valid property names are:
*
*
* - flags - a set of flags specifying various characteristics of the field's widget annotation.
* The value of this entry replaces that of the F entry in the form's corresponding annotation dictionary.
* - setflags - a set of flags to be set (turned on) in the F entry of the form's corresponding
* widget annotation dictionary. Bits equal to 1 cause the corresponding bits in F to be set to 1.
* - clrflags - a set of flags to be cleared (turned off) in the F entry of the form's corresponding
* widget annotation dictionary. Bits equal to 1 cause the corresponding
* bits in F to be set to 0.
* - fflags - a set of flags specifying various characteristics of the field. The value
* of this entry replaces that of the Ff entry in the form's corresponding field dictionary.
* - setfflags - a set of flags to be set (turned on) in the Ff entry of the form's corresponding
* field dictionary. Bits equal to 1 cause the corresponding bits in Ff to be set to 1.
* - clrfflags - a set of flags to be cleared (turned off) in the Ff entry of the form's corresponding
* field dictionary. Bits equal to 1 cause the corresponding bits in Ff
* to be set to 0.
*
*
* @param field the field name
* @param name the property name
* @param value the property value
* @param inst an array of int indexing into AcroField.Item.merged elements to process.
* Set to null to process all
* @return true if the property exists, false otherwise
*/
public boolean setFieldProperty(String field, String name, int value, int inst[]) {
if (writer == null)
throw new RuntimeException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));
Item item = fields.get(field);
if (item == null)
return false;
InstHit hit = new InstHit(inst);
if (name.equalsIgnoreCase("flags")) {
PdfNumber num = new PdfNumber(value);
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
item.getMerged(k).put(PdfName.F, num);
item.getWidget(k).put(PdfName.F, num);
markUsed(item.getWidget(k));
}
}
}
else if (name.equalsIgnoreCase("setflags")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
PdfNumber num = item.getWidget(k).getAsNumber(PdfName.F);
int val = 0;
if (num != null)
val = num.intValue();
num = new PdfNumber(val | value);
item.getMerged(k).put(PdfName.F, num);
item.getWidget(k).put(PdfName.F, num);
markUsed(item.getWidget(k));
}
}
}
else if (name.equalsIgnoreCase("clrflags")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
PdfDictionary widget = item.getWidget( k );
PdfNumber num = widget.getAsNumber(PdfName.F);
int val = 0;
if (num != null)
val = num.intValue();
num = new PdfNumber(val & ~value);
item.getMerged(k).put(PdfName.F, num);
widget.put(PdfName.F, num);
markUsed(widget);
}
}
}
else if (name.equalsIgnoreCase("fflags")) {
PdfNumber num = new PdfNumber(value);
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
item.getMerged(k).put(PdfName.FF, num);
item.getValue(k).put(PdfName.FF, num);
markUsed(item.getValue(k));
}
}
}
else if (name.equalsIgnoreCase("setfflags")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
PdfDictionary valDict = item.getValue( k );
PdfNumber num = valDict.getAsNumber( PdfName.FF );
int val = 0;
if (num != null)
val = num.intValue();
num = new PdfNumber(val | value);
item.getMerged(k).put(PdfName.FF, num);
valDict.put(PdfName.FF, num);
markUsed(valDict);
}
}
}
else if (name.equalsIgnoreCase("clrfflags")) {
for (int k = 0; k < item.size(); ++k) {
if (hit.isHit(k)) {
PdfDictionary valDict = item.getValue( k );
PdfNumber num = valDict.getAsNumber(PdfName.FF);
int val = 0;
if (num != null)
val = num.intValue();
num = new PdfNumber(val & ~value);
item.getMerged(k).put(PdfName.FF, num);
valDict.put(PdfName.FF, num);
markUsed(valDict);
}
}
}
else
return false;
return true;
}
/**
* Merges an XML data structure into this form.
*
* @param n the top node of the data structure
* @throws java.io.IOException on error
* @throws com.itextpdf.text.DocumentException o error
*/
public void mergeXfaData(Node n) throws IOException, DocumentException {
XfaForm.Xml2SomDatasets data = new XfaForm.Xml2SomDatasets(n);
for (String string : data.getOrder()) {
String name = string;
String text = XfaForm.getNodeText(data.getName2Node().get(name));
setField(name, text);
}
}
/**
* Sets the fields by FDF merging.
*
* @param fdf the FDF form
* @throws IOException on error
* @throws DocumentException on error
*/
public void setFields(FdfReader fdf) throws IOException, DocumentException {
HashMap fd = fdf.getFields();
for (String f: fd.keySet()) {
String v = fdf.getFieldValue(f);
if (v != null)
setField(f, v);
}
}
/**
* Sets the fields by XFDF merging.
*
* @param xfdf the XFDF form
* @throws IOException on error
* @throws DocumentException on error
*/
public void setFields(XfdfReader xfdf) throws IOException, DocumentException {
HashMap fd = xfdf.getFields();
for (String f: fd.keySet()) {
String v = xfdf.getFieldValue(f);
if (v != null)
setField(f, v);
List l = xfdf.getListValues(f);
if (l != null)
setListSelection(v, l.toArray(new String[l.size()]));
}
}
/**
* Regenerates the field appearance.
* This is useful when you change a field property, but not its value,
* for instance form.setFieldProperty("f", "bgcolor", BaseColor.BLUE, null);
* This won't have any effect, unless you use regenerateField("f") after changing
* the property.
*
* @param name the fully qualified field name or the partial name in the case of XFA forms
* @throws IOException on error
* @throws DocumentException on error
* @return true if the field was found and changed,
* false otherwise
*/
public boolean regenerateField(String name) throws IOException, DocumentException {
String value = getField(name);
return setField(name, value, value);
}
/**
* Sets the field value.
*
* @param name the fully qualified field name or the partial name in the case of XFA forms
* @param value the field value
* @throws IOException on error
* @throws DocumentException on error
* @return true if the field was found and changed,
* false otherwise
*/
public boolean setField(String name, String value) throws IOException, DocumentException {
return setField(name, value, null);
}
/**
* Sets the rich value for the given field. See PDF Reference chapter
* 12.7.3.4 (Rich Text) and 12.7.4.3 (Text Fields) for further details. Note that iText doesn't create an appearance for Rich Text fields.
* So you either need to use XML Worker to create an appearance (/N entry in the /AP dictionary), or you need to use setGenerateAppearances(false) to tell the viewer
* that iText didn't create any appearances.
* @param name Field name
* @param richValue html markup
* @return success/failure (will fail if the field isn't found, isn't a text field, or doesn't support rich text)
* @throws DocumentException
* @throws IOException
* @since 5.0.6
*/
public boolean setFieldRichValue(String name, String richValue) throws DocumentException, IOException {
if (writer == null) {
// can't set field values: fail
throw new DocumentException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));
}
AcroFields.Item item = getFieldItem(name);
if (item == null) {
// can't find the field: fail.
return false;
}
if (getFieldType(name) != FIELD_TYPE_TEXT) {
// field isn't a text field: fail
return false;
}
PdfDictionary merged = item.getMerged(0);
PdfNumber ffNum = merged.getAsNumber(PdfName.FF);
int flagVal = 0;
if (ffNum != null) {
flagVal = ffNum.intValue();
}
if ((flagVal & PdfFormField.FF_RICHTEXT) == 0) {
// text field doesn't support rich text: fail
return false;
}
PdfString richString = new PdfString(richValue);
item.writeToAll(PdfName.RV, richString, Item.WRITE_MERGED | Item.WRITE_VALUE);
InputStream is = new ByteArrayInputStream(richValue.getBytes());
PdfString valueString = new PdfString(XmlToTxt.parse(is));
item.writeToAll(PdfName.V, valueString, Item.WRITE_MERGED | Item.WRITE_VALUE);
return true;
}
/**
* Sets the field value and the display string. The display string
* is used to build the appearance in the cases where the value
* is modified by Acrobat with JavaScript and the algorithm is
* known.
*
* @param name the fully qualified field name or the partial name in the case of XFA forms
* @param value the field value
* @param display the string that is used for the appearance. If null
* the value parameter will be used
* @return true if the field was found and changed,
* false otherwise
* @throws IOException on error
* @throws DocumentException on error
*/
public boolean setField(String name, String value, String display) throws IOException, DocumentException {
if (writer == null)
throw new DocumentException(MessageLocalization.getComposedMessage("this.acrofields.instance.is.read.only"));
if (xfa.isXfaPresent()) {
name = xfa.findFieldName(name, this);
if (name == null)
return false;
String shortName = XfaForm.Xml2Som.getShortName(name);
Node xn = xfa.findDatasetsNode(shortName);
if (xn == null) {
xn = xfa.getDatasetsSom().insertNode(xfa.getDatasetsNode(), shortName);
}
xfa.setNodeText(xn, value);
}
Item item = fields.get(name);
if (item == null)
return false;
PdfDictionary merged = item.getMerged( 0 );
PdfName type = merged.getAsName(PdfName.FT);
if (PdfName.TX.equals(type)) {
PdfNumber maxLen = merged.getAsNumber(PdfName.MAXLEN);
int len = 0;
if (maxLen != null)
len = maxLen.intValue();
if (len > 0)
value = value.substring(0, Math.min(len, value.length()));
}
if (display == null)
display = value;
if (PdfName.TX.equals(type) || PdfName.CH.equals(type)) {
PdfString v = new PdfString(value, PdfObject.TEXT_UNICODE);
for (int idx = 0; idx < item.size(); ++idx) {
PdfDictionary valueDic = item.getValue(idx);
valueDic.put(PdfName.V, v);
valueDic.remove(PdfName.I);
markUsed(valueDic);
merged = item.getMerged(idx);
merged.remove(PdfName.I);
merged.put(PdfName.V, v);
PdfDictionary widget = item.getWidget(idx);
if (generateAppearances) {
PdfAppearance app = getAppearance(merged, display, name);
if (PdfName.CH.equals(type)) {
PdfNumber n = new PdfNumber(topFirst);
widget.put(PdfName.TI, n);
merged.put(PdfName.TI, n);
}
PdfDictionary appDic = widget.getAsDict(PdfName.AP);
if (appDic == null) {
appDic = new PdfDictionary();
widget.put(PdfName.AP, appDic);
merged.put(PdfName.AP, appDic);
}
appDic.put(PdfName.N, app.getIndirectReference());
writer.releaseTemplate(app);
}
else {
widget.remove(PdfName.AP);
merged.remove(PdfName.AP);
}
markUsed(widget);
}
return true;
}
else if (PdfName.BTN.equals(type)) {
PdfNumber ff = item.getMerged(0).getAsNumber(PdfName.FF);
int flags = 0;
if (ff != null)
flags = ff.intValue();
if ((flags & PdfFormField.FF_PUSHBUTTON) != 0) {
//we'll assume that the value is an image in base64
Image img;
try {
img = Image.getInstance(Base64.decode(value));
}
catch (Exception e) {
return false;
}
PushbuttonField pb = getNewPushbuttonFromField(name);
pb.setImage(img);
replacePushbuttonField(name, pb.getField());
return true;
}
PdfName v = new PdfName(value);
ArrayList lopt = new ArrayList();
PdfArray opts = item.getValue(0).getAsArray(PdfName.OPT);
if (opts != null) {
for (int k = 0; k < opts.size(); ++k) {
PdfString valStr = opts.getAsString(k);
if (valStr != null)
lopt.add(valStr.toUnicodeString());
else
lopt.add(null);
}
}
int vidx = lopt.indexOf(value);
PdfName vt;
if (vidx >= 0)
vt = new PdfName(String.valueOf(vidx));
else
vt = v;
for (int idx = 0; idx < item.size(); ++idx) {
merged = item.getMerged(idx);
PdfDictionary widget = item.getWidget(idx);
PdfDictionary valDict = item.getValue(idx);
markUsed(item.getValue(idx));
valDict.put(PdfName.V, vt);
merged.put(PdfName.V, vt);
markUsed(widget);
PdfDictionary appDic = widget.getAsDict(PdfName.AP);
if (appDic == null)
return false;
PdfDictionary normal = appDic.getAsDict(PdfName.N);
if (isInAP(normal, vt) || normal == null) {
merged.put(PdfName.AS, vt);
widget.put(PdfName.AS, vt);
}
else {
merged.put(PdfName.AS, PdfName.Off);
widget.put(PdfName.AS, PdfName.Off);
}
}
return true;
}
return false;
}
/**
* Sets different values in a list selection.
* No appearance is generated yet; nor does the code check if multiple select is allowed.
*
* @param name the name of the field
* @param value an array with values that need to be selected
* @return true only if the field value was changed
* @since 2.1.4
*/
public boolean setListSelection(String name, String[] value) throws IOException, DocumentException {
Item item = getFieldItem(name);
if (item == null)
return false;
PdfDictionary merged = item.getMerged( 0 );
PdfName type = merged.getAsName(PdfName.FT);
if (!PdfName.CH.equals(type)) {
return false;
}
String[] options = getListOptionExport(name);
PdfArray array = new PdfArray();
for (String element : value) {
for (int j = 0; j < options.length; j++) {
if (options[j].equals(element)) {
array.add(new PdfNumber(j));
break;
}
}
}
item.writeToAll(PdfName.I, array, Item.WRITE_MERGED | Item.WRITE_VALUE);
PdfArray vals = new PdfArray();
for (int i = 0; i < value.length; ++i) {
vals.add( new PdfString( value[i] ) );
}
item.writeToAll(PdfName.V, vals, Item.WRITE_MERGED | Item.WRITE_VALUE);
PdfAppearance app = getAppearance( merged, value, name );
PdfDictionary apDic = new PdfDictionary();
apDic.put( PdfName.N, app.getIndirectReference() );
item.writeToAll(PdfName.AP, apDic, Item.WRITE_MERGED | Item.WRITE_WIDGET);
writer.releaseTemplate( app );
item.markUsed( this, Item.WRITE_VALUE | Item.WRITE_WIDGET );
return true;
}
boolean isInAP(PdfDictionary nDic, PdfName check) {
return nDic != null && nDic.get(check) != null;
}
/**
* Gets all the fields. The fields are keyed by the fully qualified field name and
* the value is an instance of AcroFields.Item.
*
* @return all the fields
*/
public Map getFields() {
return fields;
}
/**
* Gets the field structure.
*
* @param name the name of the field
* @return the field structure or null if the field
* does not exist
*/
public Item getFieldItem(String name) {
if (xfa.isXfaPresent()) {
name = xfa.findFieldName(name, this);
if (name == null)
return null;
}
return fields.get(name);
}
/**
* Gets the long XFA translated name.
*
* @param name the name of the field
* @return the long field name
*/
public String getTranslatedFieldName(String name) {
if (xfa.isXfaPresent()) {
String namex = xfa.findFieldName(name, this);
if (namex != null)
name = namex;
}
return name;
}
/**
* Gets the field box positions in the document. The return is an array of float
* multiple of 5. For each of this groups the values are: [page, llx, lly, urx,
* ury]. The coordinates have the page rotation in consideration.
*
* @param name the field name
* @return the positions or null if field does not exist
*/
public List getFieldPositions(String name) {
Item item = getFieldItem(name);
if (item == null)
return null;
ArrayList ret = new ArrayList();
for (int k = 0; k < item.size(); ++k) {
try {
PdfDictionary wd = item.getWidget(k);
PdfArray rect = wd.getAsArray(PdfName.RECT);
if (rect == null)
continue;
Rectangle r = PdfReader.getNormalizedRectangle(rect);
int page = item.getPage(k).intValue();
int rotation = reader.getPageRotation(page);
FieldPosition fp = new FieldPosition();
fp.page = page;
if (rotation != 0) {
Rectangle pageSize = reader.getPageSize(page);
switch (rotation) {
case 270:
r = new Rectangle(
pageSize.getTop() - r.getBottom(),
r.getLeft(),
pageSize.getTop() - r.getTop(),
r.getRight());
break;
case 180:
r = new Rectangle(
pageSize.getRight() - r.getLeft(),
pageSize.getTop() - r.getBottom(),
pageSize.getRight() - r.getRight(),
pageSize.getTop() - r.getTop());
break;
case 90:
r = new Rectangle(
r.getBottom(),
pageSize.getRight() - r.getLeft(),
r.getTop(),
pageSize.getRight() - r.getRight());
break;
}
r.normalize();
}
fp.position = r;
ret.add(fp);
}
catch (Exception e) {
// empty on purpose
}
}
return ret;
}
private int removeRefFromArray(PdfArray array, PdfObject refo) {
if (refo == null || !refo.isIndirect())
return array.size();
PdfIndirectReference ref = (PdfIndirectReference)refo;
for (int j = 0; j < array.size(); ++j) {
PdfObject obj = array.getPdfObject(j);
if (!obj.isIndirect())
continue;
if (((PdfIndirectReference)obj).getNumber() == ref.getNumber())
array.remove(j--);
}
return array.size();
}
/**
* Removes all the fields from page.
*
* @param page the page to remove the fields from
* @return true if any field was removed, false otherwise
*/
public boolean removeFieldsFromPage(int page) {
if (page < 1)
return false;
String names[] = new String[fields.size()];
fields.keySet().toArray(names);
boolean found = false;
for (int k = 0; k < names.length; ++k) {
boolean fr = removeField(names[k], page);
found = found || fr;
}
return found;
}
/**
* Removes a field from the document. If page equals -1 all the fields with this
* name are removed from the document otherwise only the fields in
* that particular page are removed.
*
* @param name the field name
* @param page the page to remove the field from or -1 to remove it from all the pages
* @return true if the field exists, false otherwise
*/
public boolean removeField(String name, int page) {
Item item = getFieldItem(name);
if (item == null)
return false;
PdfDictionary acroForm = (PdfDictionary)PdfReader.getPdfObject(reader.getCatalog().get(PdfName.ACROFORM), reader.getCatalog());
if (acroForm == null)
return false;
PdfArray arrayf = acroForm.getAsArray(PdfName.FIELDS);
if (arrayf == null)
return false;
for (int k = 0; k < item.size(); ++k) {
int pageV = item.getPage(k).intValue();
if (page != -1 && page != pageV)
continue;
PdfIndirectReference ref = item.getWidgetRef(k);
PdfDictionary wd = item.getWidget( k );
PdfDictionary pageDic = reader.getPageN(pageV);
PdfArray annots = pageDic.getAsArray(PdfName.ANNOTS);
if (annots != null) {
if (removeRefFromArray(annots, ref) == 0) {
pageDic.remove(PdfName.ANNOTS);
markUsed(pageDic);
}
else
markUsed(annots);
}
PdfReader.killIndirect(ref);
PdfIndirectReference kid = ref;
while ((ref = wd.getAsIndirectObject(PdfName.PARENT)) != null) {
wd = wd.getAsDict( PdfName.PARENT );
PdfArray kids = wd.getAsArray(PdfName.KIDS);
if (removeRefFromArray(kids, kid) != 0)
break;
kid = ref;
PdfReader.killIndirect(ref);
}
if (ref == null) {
removeRefFromArray(arrayf, kid);
markUsed(arrayf);
}
if (page != -1) {
item.remove( k );
--k;
}
}
if (page == -1 || item.size() == 0)
fields.remove(name);
return true;
}
/**
* Removes a field from the document.
*
* @param name the field name
* @return true if the field exists, false otherwise
*/
public boolean removeField(String name) {
return removeField(name, -1);
}
/**
* Gets the property generateAppearances.
*
* @return the property generateAppearances
*/
public boolean isGenerateAppearances() {
return generateAppearances;
}
/**
* Sets the option to generate appearances. Not generating appearances
* will speed-up form filling but the results can be
* unexpected in Acrobat. Don't use it unless your environment is well
* controlled. The default is true.
*
* @param generateAppearances the option to generate appearances
*/
public void setGenerateAppearances(boolean generateAppearances) {
this.generateAppearances = generateAppearances;
PdfDictionary top = reader.getCatalog().getAsDict(PdfName.ACROFORM);
if (generateAppearances)
top.remove(PdfName.NEEDAPPEARANCES);
else
top.put(PdfName.NEEDAPPEARANCES, PdfBoolean.PDFTRUE);
}
/** The field representations for retrieval and modification. */
public static class Item {
/**
* writeToAll constant.
*
* @since 2.1.5
*/
public static final int WRITE_MERGED = 1;
/**
* writeToAll and markUsed constant.
*
* @since 2.1.5
*/
public static final int WRITE_WIDGET = 2;
/**
* writeToAll and markUsed constant.
*
* @since 2.1.5
*/
public static final int WRITE_VALUE = 4;
/**
* This function writes the given key/value pair to all the instances
* of merged, widget, and/or value, depending on the writeFlags setting
*
* @since 2.1.5
*
* @param key you'll never guess what this is for.
* @param value if value is null, the key will be removed
* @param writeFlags ORed together WRITE_* flags
*/
public void writeToAll(PdfName key, PdfObject value, int writeFlags) {
int i;
PdfDictionary curDict = null;
if ((writeFlags & WRITE_MERGED) != 0) {
for (i = 0; i < merged.size(); ++i) {
curDict = getMerged(i);
curDict.put(key, value);
}
}
if ((writeFlags & WRITE_WIDGET) != 0) {
for (i = 0; i < widgets.size(); ++i) {
curDict = getWidget(i);
curDict.put(key, value);
}
}
if ((writeFlags & WRITE_VALUE) != 0) {
for (i = 0; i < values.size(); ++i) {
curDict = getValue(i);
curDict.put(key, value);
}
}
}
/**
* Mark all the item dictionaries used matching the given flags
*
* @since 2.1.5
* @param writeFlags WRITE_MERGED is ignored
*/
public void markUsed( AcroFields parentFields, int writeFlags ) {
if ((writeFlags & WRITE_VALUE) != 0) {
for (int i = 0; i < size(); ++i) {
parentFields.markUsed( getValue( i ) );
}
}
if ((writeFlags & WRITE_WIDGET) != 0) {
for (int i = 0; i < size(); ++i) {
parentFields.markUsed(getWidget(i));
}
}
}
/**
* An array of PdfDictionary where the value tag /V
* is present.
*
* @since 5.0.2 public is now protected
*/
protected ArrayList values = new ArrayList();
/**
* An array of PdfDictionary with the widgets.
*
* @since 5.0.2 public is now protected
*/
protected ArrayList widgets = new ArrayList();
/**
* An array of PdfDictionary with the widget references.
*
* @since 5.0.2 public is now protected
*/
protected ArrayList widget_refs = new ArrayList();
/**
* An array of PdfDictionary with all the field
* and widget tags merged.
*
* @since 5.0.2 public is now protected
*/
protected ArrayList merged = new ArrayList();
/**
* An array of Integer with the page numbers where
* the widgets are displayed.
*
* @since 5.0.2 public is now protected
*/
protected ArrayList page = new ArrayList();
/**
* An array of Integer with the tab order of the field in the page.
*
* @since 5.0.2 public is now protected
*/
protected ArrayList tabOrder = new ArrayList();
/**
* Preferred method of determining the number of instances
* of a given field.
*
* @since 2.1.5
* @return number of instances
*/
public int size() {
return values.size();
}
/**
* Remove the given instance from this item. It is possible to
* remove all instances using this function.
*
* @since 2.1.5
* @param killIdx
*/
void remove(int killIdx) {
values.remove(killIdx);
widgets.remove(killIdx);
widget_refs.remove(killIdx);
merged.remove(killIdx);
page.remove(killIdx);
tabOrder.remove(killIdx);
}
/**
* Retrieve the value dictionary of the given instance
*
* @since 2.1.5
* @param idx instance index
* @return dictionary storing this instance's value. It may be shared across instances.
*/
public PdfDictionary getValue(int idx) {
return values.get(idx);
}
/**
* Add a value dict to this Item
*
* @since 2.1.5
* @param value new value dictionary
*/
void addValue(PdfDictionary value) {
values.add(value);
}
/**
* Retrieve the widget dictionary of the given instance
*
* @since 2.1.5
* @param idx instance index
* @return The dictionary found in the appropriate page's Annot array.
*/
public PdfDictionary getWidget(int idx) {
return widgets.get(idx);
}
/**
* Add a widget dict to this Item
*
* @since 2.1.5
* @param widget
*/
void addWidget(PdfDictionary widget) {
widgets.add(widget);
}
/**
* Retrieve the reference to the given instance
*
* @since 2.1.5
* @param idx instance index
* @return reference to the given field instance
*/
public PdfIndirectReference getWidgetRef(int idx) {
return widget_refs.get(idx);
}
/**
* Add a widget ref to this Item
*
* @since 2.1.5
* @param widgRef
*/
void addWidgetRef(PdfIndirectReference widgRef) {
widget_refs.add(widgRef);
}
/**
* Retrieve the merged dictionary for the given instance. The merged
* dictionary contains all the keys present in parent fields, though they
* may have been overwritten (or modified?) by children.
* Example: a merged radio field dict will contain /V
*
* @since 2.1.5
* @param idx instance index
* @return the merged dictionary for the given instance
*/
public PdfDictionary getMerged(int idx) {
return merged.get(idx);
}
/**
* Adds a merged dictionary to this Item.
*
* @since 2.1.5
* @param mergeDict
*/
void addMerged(PdfDictionary mergeDict) {
merged.add(mergeDict);
}
/**
* Retrieve the page number of the given instance
*
* @since 2.1.5
* @param idx
* @return remember, pages are "1-indexed", not "0-indexed" like field instances.
*/
public Integer getPage(int idx) {
return page.get(idx);
}
/**
* Adds a page to the current Item.
*
* @since 2.1.5
* @param pg
*/
void addPage(int pg) {
page.add(Integer.valueOf(pg));
}
/**
* forces a page value into the Item.
*
* @since 2.1.5
* @param idx
*/
void forcePage(int idx, int pg) {
page.set(idx, Integer.valueOf( pg ));
}
/**
* Gets the tabOrder.
*
* @since 2.1.5
* @param idx
* @return tab index of the given field instance
*/
public Integer getTabOrder(int idx) {
return tabOrder.get(idx);
}
/**
* Adds a tab order value to this Item.
*
* @since 2.1.5
* @param order
*/
void addTabOrder(int order) {
tabOrder.add(Integer.valueOf(order));
}
}
private static class InstHit {
IntHashtable hits;
public InstHit(int inst[]) {
if (inst == null)
return;
hits = new IntHashtable();
for (int k = 0; k < inst.length; ++k)
hits.put(inst[k], 1);
}
public boolean isHit(int n) {
if (hits == null)
return true;
return hits.containsKey(n);
}
}
/**
* Clears a signed field.
* @param name the field name
* @return true if the field was signed, false if the field was not signed or not found
* @since 5.0.5
*/
public boolean clearSignatureField(String name) {
sigNames = null;
getSignatureNames();
if (!sigNames.containsKey(name))
return false;
Item sig = fields.get(name);
sig.markUsed(this, Item.WRITE_VALUE | Item.WRITE_WIDGET);
int n = sig.size();
for (int k = 0; k < n; ++k) {
clearSigDic(sig.getMerged(k));
clearSigDic(sig.getWidget(k));
clearSigDic(sig.getValue(k));
}
return true;
}
private static void clearSigDic(PdfDictionary dic) {
dic.remove(PdfName.AP);
dic.remove(PdfName.AS);
dic.remove(PdfName.V);
dic.remove(PdfName.DV);
dic.remove(PdfName.SV);
dic.remove(PdfName.FF);
dic.put(PdfName.F, new PdfNumber(PdfAnnotation.FLAGS_PRINT));
}
private ArrayList orderedSignatureNames;
/**
* Gets the field names that have signatures and are signed.
*
* @return the field names that have signatures and are signed
*/
public ArrayList getSignatureNames() {
if (sigNames != null)
return new ArrayList(orderedSignatureNames);
sigNames = new HashMap();
orderedSignatureNames = new ArrayList();
ArrayList sorter = new ArrayList();
for (Map.Entry entry: fields.entrySet()) {
Item item = entry.getValue();
PdfDictionary merged = item.getMerged(0);
if (!PdfName.SIG.equals(merged.get(PdfName.FT)))
continue;
PdfDictionary v = merged.getAsDict(PdfName.V);
if (v == null)
continue;
PdfString contents = v.getAsString(PdfName.CONTENTS);
if (contents == null)
continue;
PdfArray ro = v.getAsArray(PdfName.BYTERANGE);
if (ro == null)
continue;
int rangeSize = ro.size();
if (rangeSize < 2)
continue;
int length = ro.getAsNumber(rangeSize - 1).intValue() + ro.getAsNumber(rangeSize - 2).intValue();
sorter.add(new Object[]{entry.getKey(), new int[]{length, 0}});
}
Collections.sort(sorter, new AcroFields.SorterComparator());
if (!sorter.isEmpty()) {
if (((int[])sorter.get(sorter.size() - 1)[1])[0] == reader.getFileLength())
totalRevisions = sorter.size();
else
totalRevisions = sorter.size() + 1;
for (int k = 0; k < sorter.size(); ++k) {
Object objs[] = sorter.get(k);
String name = (String)objs[0];
int p[] = (int[])objs[1];
p[1] = k + 1;
sigNames.put(name, p);
orderedSignatureNames.add(name);
}
}
return new ArrayList(orderedSignatureNames);
}
/**
* Gets the field names that have blank signatures.
*
* @return the field names that have blank signatures
*/
public ArrayList getBlankSignatureNames() {
getSignatureNames();
ArrayList sigs = new ArrayList();
for (Map.Entry entry: fields.entrySet()) {
Item item = entry.getValue();
PdfDictionary merged = item.getMerged(0);
if (!PdfName.SIG.equals(merged.getAsName(PdfName.FT)))
continue;
if (sigNames.containsKey(entry.getKey()))
continue;
sigs.add(entry.getKey());
}
return sigs;
}
/**
* Gets the signature dictionary, the one keyed by /V.
*
* @param name the field name
* @return the signature dictionary keyed by /V or null if the field is not
* a signature
*/
public PdfDictionary getSignatureDictionary(String name) {
getSignatureNames();
name = getTranslatedFieldName(name);
if (!sigNames.containsKey(name))
return null;
Item item = fields.get(name);
PdfDictionary merged = item.getMerged(0);
return merged.getAsDict(PdfName.V);
}
/**
* Gets a reference to the normal appearance of a field.
*
* @param name the field name
* @return a reference to the /N entry of the /AP dictionary or null if the field is not found
*/
public PdfIndirectReference getNormalAppearance(String name) {
getSignatureNames();
name = getTranslatedFieldName(name);
Item item = fields.get(name);
if (item == null)
return null;
PdfDictionary merged = item.getMerged(0);
PdfDictionary ap = merged.getAsDict(PdfName.AP);
if (ap == null)
return null;
PdfIndirectReference ref = ap.getAsIndirectObject(PdfName.N);
if (ref == null)
return null;
return ref;
}
/**
* Checks is the signature covers the entire document or just part of it.
*
* @param name the signature field name
* @return true if the signature covers the entire document,
* false otherwise
*/
public boolean signatureCoversWholeDocument(String name) {
getSignatureNames();
name = getTranslatedFieldName(name);
if (!sigNames.containsKey(name))
return false;
return sigNames.get(name)[0] == reader.getFileLength();
}
/**
* Verifies a signature. An example usage is:
*
*
* KeyStore kall = PdfPKCS7.loadCacertsKeyStore();
* PdfReader reader = new PdfReader("my_signed_doc.pdf");
* AcroFields af = reader.getAcroFields();
* ArrayList names = af.getSignatureNames();
* for (int k = 0; k < names.size(); ++k) {
* String name = (String)names.get(k);
* System.out.println("Signature name: " + name);
* System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name));
* PdfPKCS7 pk = af.verifySignature(name);
* Calendar cal = pk.getSignDate();
* Certificate pkc[] = pk.getCertificates();
* System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate()));
* System.out.println("Document modified: " + !pk.verify());
* Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal);
* if (fails == null)
* System.out.println("Certificates verified against the KeyStore");
* else
* System.out.println("Certificate failed: " + fails[1]);
* }
*
*
* @param name the signature field name
* @return a PdfPKCS7 class to continue the verification
*/
public PdfPKCS7 verifySignature(String name) {
return verifySignature(name, null);
}
/**
* Verifies a signature. An example usage is:
*
*
* KeyStore kall = PdfPKCS7.loadCacertsKeyStore();
* PdfReader reader = new PdfReader("my_signed_doc.pdf");
* AcroFields af = reader.getAcroFields();
* ArrayList names = af.getSignatureNames();
* for (int k = 0; k < names.size(); ++k) {
* String name = (String)names.get(k);
* System.out.println("Signature name: " + name);
* System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name));
* PdfPKCS7 pk = af.verifySignature(name);
* Calendar cal = pk.getSignDate();
* Certificate pkc[] = pk.getCertificates();
* System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate()));
* System.out.println("Document modified: " + !pk.verify());
* Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal);
* if (fails == null)
* System.out.println("Certificates verified against the KeyStore");
* else
* System.out.println("Certificate failed: " + fails[1]);
* }
*
*
* @param name the signature field name
* @param provider the provider or null for the default provider
* @return a PdfPKCS7 class to continue the verification
*/
public PdfPKCS7 verifySignature(String name, String provider) {
PdfDictionary v = getSignatureDictionary(name);
if (v == null)
return null;
try {
PdfName sub = v.getAsName(PdfName.SUBFILTER);
PdfString contents = v.getAsString(PdfName.CONTENTS);
PdfPKCS7 pk = null;
if (sub.equals(PdfName.ADBE_X509_RSA_SHA1)) {
PdfString cert = v.getAsString(PdfName.CERT);
if (cert == null)
cert = v.getAsArray(PdfName.CERT).getAsString(0);
pk = new PdfPKCS7(contents.getOriginalBytes(), cert.getBytes(), provider);
}
else
pk = new PdfPKCS7(contents.getOriginalBytes(), sub, provider);
updateByteRange(pk, v);
PdfString str = v.getAsString(PdfName.M);
if (str != null)
pk.setSignDate(PdfDate.decode(str.toString()));
PdfObject obj = PdfReader.getPdfObject(v.get(PdfName.NAME));
if (obj != null) {
if (obj.isString())
pk.setSignName(((PdfString)obj).toUnicodeString());
else if(obj.isName())
pk.setSignName(PdfName.decodeName(obj.toString()));
}
str = v.getAsString(PdfName.REASON);
if (str != null)
pk.setReason(str.toUnicodeString());
str = v.getAsString(PdfName.LOCATION);
if (str != null)
pk.setLocation(str.toUnicodeString());
return pk;
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
private void updateByteRange(PdfPKCS7 pkcs7, PdfDictionary v) {
PdfArray b = v.getAsArray(PdfName.BYTERANGE);
RandomAccessFileOrArray rf = reader.getSafeFile();
InputStream rg = null;
try {
rg = new RASInputStream(new RandomAccessSourceFactory().createRanged(rf.createSourceView(), b.asLongArray()));
byte buf[] = new byte[8192];
int rd;
while ((rd = rg.read(buf, 0, buf.length)) > 0) {
pkcs7.update(buf, 0, rd);
}
}
catch (Exception e) {
throw new ExceptionConverter(e);
} finally {
try {
if (rg != null) rg.close();
} catch (IOException e) {
// this really shouldn't ever happen - the source view we use is based on a Safe view, which is a no-op anyway
throw new ExceptionConverter(e);
}
}
}
private void markUsed(PdfObject obj) {
if (!append)
return;
((PdfStamperImp)writer).markUsed(obj);
}
/**
* Gets the total number of revisions this document has.
*
* @return the total number of revisions
*/
public int getTotalRevisions() {
getSignatureNames();
return this.totalRevisions;
}
/**
* Gets this field revision.
*
* @param field the signature field name
* @return the revision or zero if it's not a signature field
*/
public int getRevision(String field) {
getSignatureNames();
field = getTranslatedFieldName(field);
if (!sigNames.containsKey(field))
return 0;
return sigNames.get(field)[1];
}
/**
* Extracts a revision from the document.
*
* @param field the signature field name
* @return an InputStream covering the revision. Returns null if
* it's not a signature field
* @throws IOException on error
*/
public InputStream extractRevision(String field) throws IOException {
getSignatureNames();
field = getTranslatedFieldName(field);
if (!sigNames.containsKey(field))
return null;
int length = sigNames.get(field)[0];
RandomAccessFileOrArray raf = reader.getSafeFile();
return new RASInputStream(new WindowRandomAccessSource(raf.createSourceView(), 0, length));
}
/**
* Gets the appearances cache.
*
* @return the appearances cache
* @since 2.1.5 this method used to return a HashMap
*/
public Map getFieldCache() {
return this.fieldCache;
}
/**
* Sets a cache for field appearances. Parsing the existing PDF to
* create a new TextField is time expensive. For those tasks that repeatedly
* fill the same PDF with different field values the use of the cache has dramatic
* speed advantages. An example usage:
*
*
* String pdfFile = ...;// the pdf file used as template
* ArrayList xfdfFiles = ...;// the xfdf file names
* ArrayList pdfOutFiles = ...;// the output file names, one for each element in xpdfFiles
* HashMap cache = new HashMap();// the appearances cache
* PdfReader originalReader = new PdfReader(pdfFile);
* for (int k = 0; k < xfdfFiles.size(); ++k) {
* PdfReader reader = new PdfReader(originalReader);
* XfdfReader xfdf = new XfdfReader((String)xfdfFiles.get(k));
* PdfStamper stp = new PdfStamper(reader, new FileOutputStream((String)pdfOutFiles.get(k)));
* AcroFields af = stp.getAcroFields();
* af.setFieldCache(cache);
* af.setFields(xfdf);
* stp.close();
* }
*
*
* @param fieldCache a Map that will carry the cached appearances
* @since 2.1.5 this method used to take a HashMap as parameter
*/
public void setFieldCache(Map fieldCache) {
this.fieldCache = fieldCache;
}
/**
* Sets extra margins in text fields to better mimic the Acrobat layout.
*
* @param extraMarginLeft the extra margin left
* @param extraMarginTop the extra margin top
*/
public void setExtraMargin(float extraMarginLeft, float extraMarginTop) {
this.extraMarginLeft = extraMarginLeft;
this.extraMarginTop = extraMarginTop;
}
/**
* Adds a substitution font to the list. The fonts in this list will be used if the original
* font doesn't contain the needed glyphs.
*
* @param font the font
*/
public void addSubstitutionFont(BaseFont font) {
if (substitutionFonts == null)
substitutionFonts = new ArrayList stdFieldFontNames = new HashMap();
/**
* Holds value of property totalRevisions.
*/
private int totalRevisions;
/**
* Holds value of property fieldCache.
*
* @since 2.1.5 this used to be a HashMap
*/
private Map fieldCache;
static {
stdFieldFontNames.put("CoBO", new String[]{"Courier-BoldOblique"});
stdFieldFontNames.put("CoBo", new String[]{"Courier-Bold"});
stdFieldFontNames.put("CoOb", new String[]{"Courier-Oblique"});
stdFieldFontNames.put("Cour", new String[]{"Courier"});
stdFieldFontNames.put("HeBO", new String[]{"Helvetica-BoldOblique"});
stdFieldFontNames.put("HeBo", new String[]{"Helvetica-Bold"});
stdFieldFontNames.put("HeOb", new String[]{"Helvetica-Oblique"});
stdFieldFontNames.put("Helv", new String[]{"Helvetica"});
stdFieldFontNames.put("Symb", new String[]{"Symbol"});
stdFieldFontNames.put("TiBI", new String[]{"Times-BoldItalic"});
stdFieldFontNames.put("TiBo", new String[]{"Times-Bold"});
stdFieldFontNames.put("TiIt", new String[]{"Times-Italic"});
stdFieldFontNames.put("TiRo", new String[]{"Times-Roman"});
stdFieldFontNames.put("ZaDb", new String[]{"ZapfDingbats"});
stdFieldFontNames.put("HySm", new String[]{"HYSMyeongJo-Medium", "UniKS-UCS2-H"});
stdFieldFontNames.put("HyGo", new String[]{"HYGoThic-Medium", "UniKS-UCS2-H"});
stdFieldFontNames.put("KaGo", new String[]{"HeiseiKakuGo-W5", "UniKS-UCS2-H"});
stdFieldFontNames.put("KaMi", new String[]{"HeiseiMin-W3", "UniJIS-UCS2-H"});
stdFieldFontNames.put("MHei", new String[]{"MHei-Medium", "UniCNS-UCS2-H"});
stdFieldFontNames.put("MSun", new String[]{"MSung-Light", "UniCNS-UCS2-H"});
stdFieldFontNames.put("STSo", new String[]{"STSong-Light", "UniGB-UCS2-H"});
}
private static class SorterComparator implements Comparator {
public int compare(Object[] o1, Object[] o2) {
int n1 = ((int[])o1[1])[0];
int n2 = ((int[])o2[1])[0];
return n1 - n2;
}
}
/**
* Gets the list of substitution fonts. The list is composed of BaseFont and can be null. The fonts in this list will be used if the original
* font doesn't contain the needed glyphs.
*
* @return the list
*/
public ArrayListBaseFont and can also be null. The fonts in this list will be used if the original
* font doesn't contain the needed glyphs.
*
* @param substitutionFonts the list
*/
public void setSubstitutionFonts(ArrayListnull if the field is not a pushbutton
*/
public PushbuttonField getNewPushbuttonFromField(String field) {
return getNewPushbuttonFromField(field, 0);
}
/**
* Creates a new pushbutton from an existing field. This pushbutton can be changed and be used to replace
* an existing one, with the same name or other name, as long is it is in the same document. To replace an existing pushbutton
* call {@link #replacePushbuttonField(String,PdfFormField,int)}.
*
* @param field the field name that should be a pushbutton
* @param order the field order in fields with same name
* @return a new pushbutton or null if the field is not a pushbutton
*
* @since 2.0.7
*/
public PushbuttonField getNewPushbuttonFromField(String field, int order) {
try {
if (getFieldType(field) != FIELD_TYPE_PUSHBUTTON)
return null;
Item item = getFieldItem(field);
if (order >= item.size())
return null;
List pos = getFieldPositions(field);
Rectangle box = pos.get(order).position;
PushbuttonField newButton = new PushbuttonField(writer, box, null);
PdfDictionary dic = item.getMerged(order);
decodeGenericDictionary(dic, newButton);
PdfDictionary mk = dic.getAsDict(PdfName.MK);
if (mk != null) {
PdfString text = mk.getAsString(PdfName.CA);
if (text != null)
newButton.setText(text.toUnicodeString());
PdfNumber tp = mk.getAsNumber(PdfName.TP);
if (tp != null)
newButton.setLayout(tp.intValue() + 1);
PdfDictionary ifit = mk.getAsDict(PdfName.IF);
if (ifit != null) {
PdfName sw = ifit.getAsName(PdfName.SW);
if (sw != null) {
int scale = PushbuttonField.SCALE_ICON_ALWAYS;
if (sw.equals(PdfName.B))
scale = PushbuttonField.SCALE_ICON_IS_TOO_BIG;
else if (sw.equals(PdfName.S))
scale = PushbuttonField.SCALE_ICON_IS_TOO_SMALL;
else if (sw.equals(PdfName.N))
scale = PushbuttonField.SCALE_ICON_NEVER;
newButton.setScaleIcon(scale);
}
sw = ifit.getAsName(PdfName.S);
if (sw != null) {
if (sw.equals(PdfName.A))
newButton.setProportionalIcon(false);
}
PdfArray aj = ifit.getAsArray(PdfName.A);
if (aj != null && aj.size() == 2) {
float left = aj.getAsNumber(0).floatValue();
float bottom = aj.getAsNumber(1).floatValue();
newButton.setIconHorizontalAdjustment(left);
newButton.setIconVerticalAdjustment(bottom);
}
PdfBoolean fb = ifit.getAsBoolean(PdfName.FB);
if (fb != null && fb.booleanValue())
newButton.setIconFitToBounds(true);
}
PdfObject i = mk.get(PdfName.I);
if (i != null && i.isIndirect())
newButton.setIconReference((PRIndirectReference)i);
}
return newButton;
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Replaces the first field with a new pushbutton. The pushbutton can be created with
* {@link #getNewPushbuttonFromField(String)} from the same document or it can be a
* generic PdfFormField of the type pushbutton.
*
* @param field the field name
* @param button the PdfFormField representing the pushbutton
* @return true if the field was replaced, false if the field
* was not a pushbutton
*/
public boolean replacePushbuttonField(String field, PdfFormField button) {
return replacePushbuttonField(field, button, 0);
}
/**
* Replaces the designated field with a new pushbutton. The pushbutton can be created with
* {@link #getNewPushbuttonFromField(String,int)} from the same document or it can be a
* generic PdfFormField of the type pushbutton.
*
* @param field the field name
* @param button the PdfFormField representing the pushbutton
* @param order the field order in fields with same name
* @return true if the field was replaced, false if the field
* was not a pushbutton
*
* @since 2.0.7
*/
public boolean replacePushbuttonField(String field, PdfFormField button, int order) {
if (getFieldType(field) != FIELD_TYPE_PUSHBUTTON)
return false;
Item item = getFieldItem(field);
if (order >= item.size())
return false;
PdfDictionary merged = item.getMerged(order);
PdfDictionary values = item.getValue(order);
PdfDictionary widgets = item.getWidget(order);
for (int k = 0; k < buttonRemove.length; ++k) {
merged.remove(buttonRemove[k]);
values.remove(buttonRemove[k]);
widgets.remove(buttonRemove[k]);
}
for (Object element : button.getKeys()) {
PdfName key = (PdfName)element;
if (key.equals(PdfName.T) || key.equals(PdfName.RECT))
continue;
if (key.equals(PdfName.FF))
values.put(key, button.get(key));
else
widgets.put(key, button.get(key));
merged.put(key, button.get(key));
markUsed(values);
markUsed(widgets);
}
return true;
}
/**
* Checks whether a name exists as a signature field or not. It checks both signed fields and blank signatures.
* @param name String
* @return boolean does the signature field exist
* @since 5.5.1
*/
public boolean doesSignatureFieldExist(String name) {
return getBlankSignatureNames().contains(name) || getSignatureNames().contains(name);
}
/**
* A class representing a field position
* @since 5.0.2
*/
public static class FieldPosition {
public int page;
public Rectangle position;
}
}