com.itextpdf.text.pdf
Class PRAcroForm

java.lang.Object
  com.itextpdf.text.pdf.PdfObject
      com.itextpdf.text.pdf.PdfDictionary
          com.itextpdf.text.pdf.PRAcroForm

public class PRAcroForm
extends PdfDictionary

This class captures an AcroForm on input. Basically, it extends Dictionary by indexing the fields of an AcroForm

Author:

Mark Thompson

Nested Class Summary

static class

PRAcroForm.FieldInformation This class holds the information for a single field

Field Summary

Fields inherited from class com.itextpdf.text.pdf.PdfDictionary

CATALOG, FONT, hashMap, OUTLINES, PAGE, PAGES

Fields inherited from class com.itextpdf.text.pdf.PdfObject

ARRAY, BOOLEAN, bytes, DICTIONARY, INDIRECT, indRef, NAME, NOTHING, NULL, NUMBER, STREAM, STRING, TEXT_PDFDOCENCODING, TEXT_UNICODE, type

Constructor Summary

PRAcroForm(PdfReader reader)
Constructor

Method Summary

PRAcroForm.FieldInformation	getField(String name)
ArrayList<PRAcroForm.FieldInformation>	getFields()
PRIndirectReference	getRefByName(String name) Given the title (/T) of a reference, return the associated reference
protected void	iterateFields(PdfArray fieldlist, PRIndirectReference fieldDict, String parentPath) After reading, we index all of the fields.
protected PdfDictionary	mergeAttrib(PdfDictionary parent, PdfDictionary child) merge field attributes from two dictionaries
protected void	pushAttrib(PdfDictionary dict) stack a level of dictionary.
void	readAcroForm(PdfDictionary root) Read, and comprehend the acroform
int	size() Number of fields found

Methods inherited from class com.itextpdf.text.pdf.PdfDictionary

clear, contains, get, getAsArray, getAsBoolean, getAsDict, getAsIndirectObject, getAsName, getAsNumber, getAsStream, getAsString, getDirectObject, getKeys, isCatalog, isFont, isOutlineTree, isPage, isPages, merge, mergeDifferent, put, putAll, putEx, remove, toPdf, toString

Methods inherited from class com.itextpdf.text.pdf.PdfObject

canBeInObjStm, getBytes, getIndRef, isArray, isBoolean, isDictionary, isIndirect, isName, isNull, isNumber, isStream, isString, length, setContent, setIndRef, type

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PRAcroForm

public PRAcroForm(PdfReader reader)

Constructor

Parameters:

reader - reader of the input file

Method Detail

size

public int size()

Number of fields found

Overrides:

size in class PdfDictionary

Returns:

size

getFields

public ArrayList<PRAcroForm.FieldInformation> getFields()

getField

public PRAcroForm.FieldInformation getField(String name)

getRefByName

public PRIndirectReference getRefByName(String name)

Given the title (/T) of a reference, return the associated reference

Parameters:

name - a string containing the path

Returns:

a reference to the field, or null

readAcroForm

public void readAcroForm(PdfDictionary root)

Read, and comprehend the acroform

Parameters:

root - the document root

iterateFields

protected void iterateFields(PdfArray fieldlist,
                             PRIndirectReference fieldDict,
                             String parentPath)

After reading, we index all of the fields. Recursive.

Parameters:

fieldlist - An array of fields

fieldDict - the last field dictionary we encountered (recursively)

parentPath - the pathname of the field, up to this point or null

mergeAttrib

protected PdfDictionary mergeAttrib(PdfDictionary parent,
                                    PdfDictionary child)

merge field attributes from two dictionaries

Parameters:

parent - one dictionary

child - the other dictionary

Returns:

a merged dictionary

pushAttrib

protected void pushAttrib(PdfDictionary dict)

stack a level of dictionary. Merge in a dictionary from this level