com.itextpdf.text.pdf
Class AcroFields

java.lang.Object
  extended by com.itextpdf.text.pdf.AcroFields

public class AcroFields
extends Object

Query and change fields in existing documents either by method calls or by FDF merging.

Author:
Paulo Soares

Nested Class Summary
private static class AcroFields.InstHit
           
static class AcroFields.Item
          The field representations for retrieval and modification.
private static class AcroFields.RevisionStream
           
private static class AcroFields.SorterComparator
           
 
Field Summary
private  boolean append
           
private static PdfName[] buttonRemove
           
static int DA_COLOR
           
static int DA_FONT
           
static int DA_SIZE
           
private  HashMap<Integer,BaseFont> extensionFonts
           
private  float extraMarginLeft
           
private  float extraMarginTop
           
static int FIELD_TYPE_CHECKBOX
          A field type.
static int FIELD_TYPE_COMBO
          A field type.
static int FIELD_TYPE_LIST
          A field type.
static int FIELD_TYPE_NONE
          A field type invalid or not found.
static int FIELD_TYPE_PUSHBUTTON
          A field type.
static int FIELD_TYPE_RADIOBUTTON
          A field type.
static int FIELD_TYPE_SIGNATURE
          A field type.
static int FIELD_TYPE_TEXT
          A field type.
private  Map<String,TextField> fieldCache
          Holds value of property fieldCache.
(package private)  HashMap<String,AcroFields.Item> fields
           
private  boolean generateAppearances
          Holds value of property generateAppearances.
private  boolean lastWasString
           
private  HashMap<String,BaseFont> localFonts
           
(package private)  PdfReader reader
           
private  HashMap<String,int[]> sigNames
           
private static HashMap<String,String[]> stdFieldFontNames
           
private  ArrayList<BaseFont> substitutionFonts
           
private  int topFirst
           
private  int totalRevisions
          Holds value of property totalRevisions.
(package private)  PdfWriter writer
           
private  XfaForm xfa
           
 
Constructor Summary
AcroFields(PdfReader reader, PdfWriter writer)
           
 
Method Summary
 void addSubstitutionFont(BaseFont font)
          Adds a substitution font to the list.
 void decodeGenericDictionary(PdfDictionary merged, BaseField tx)
           
 void exportAsFdf(FdfWriter writer)
          Export the fields as a FDF.
 InputStream extractRevision(String field)
          Extracts a revision from the document.
(package private)  void fill()
           
(package private)  PdfAppearance getAppearance(PdfDictionary merged, String[] values, String fieldName)
           
(package private)  PdfAppearance getAppearance(PdfDictionary merged, String text, String fieldName)
           
 String[] getAppearanceStates(String fieldName)
          Gets the list of appearance names.
 ArrayList<String> getBlankSignatureNames()
          Gets the field names that have blank signatures.
 String getField(String name)
          Gets the field value.
 Map<String,TextField> getFieldCache()
          Gets the appearances cache.
 AcroFields.Item getFieldItem(String name)
          Gets the field structure.
 float[] getFieldPositions(String name)
          Gets the field box positions in the document.
 HashMap<String,AcroFields.Item> getFields()
          Gets all the fields.
 int getFieldType(String fieldName)
          Gets the field type.
private  String[] getListOption(String fieldName, int idx)
           
 String[] getListOptionDisplay(String fieldName)
          Gets the list of display option values from fields of type list or combo.
 String[] getListOptionExport(String fieldName)
          Gets the list of export option values from fields of type list or combo.
 String[] getListSelection(String name)
          Gets the field values of a Choice field.
(package private)  BaseColor getMKColor(PdfArray ar)
           
 PushbuttonField getNewPushbuttonFromField(String field)
          Creates a new pushbutton from an existing field.
 PushbuttonField getNewPushbuttonFromField(String field, int order)
          Creates a new pushbutton from an existing field.
 int getRevision(String field)
          Gets this field revision.
 PdfDictionary getSignatureDictionary(String name)
          Gets the signature dictionary, the one keyed by /V.
 ArrayList<String> getSignatureNames()
          Gets the field names that have signatures and are signed.
 ArrayList<BaseFont> getSubstitutionFonts()
          Gets the list of substitution fonts.
 int getTotalRevisions()
          Gets the total number of revisions this document has.
 String getTranslatedFieldName(String name)
          Gets the long XFA translated name.
 XfaForm getXfa()
          Gets the XFA form processor.
 boolean isGenerateAppearances()
          Gets the property generateAppearances.
(package private)  boolean isInAP(PdfDictionary dic, PdfName check)
           
private  void markUsed(PdfObject obj)
           
 void mergeXfaData(Node n)
          Merges an XML data structure into this form.
 boolean regenerateField(String name)
          Regenerates the field appearance.
 boolean removeField(String name)
          Removes a field from the document.
 boolean removeField(String name, int page)
          Removes a field from the document.
 boolean removeFieldsFromPage(int page)
          Removes all the fields from page.
private  int removeRefFromArray(PdfArray array, PdfObject refo)
           
 void removeXfa()
          Removes the XFA stream from the document.
 boolean renameField(String oldName, String newName)
          Renames a field.
 boolean replacePushbuttonField(String field, PdfFormField button)
          Replaces the first field with a new pushbutton.
 boolean replacePushbuttonField(String field, PdfFormField button, int order)
          Replaces the designated field with a new pushbutton.
 void setExtraMargin(float extraMarginLeft, float extraMarginTop)
          Sets extra margins in text fields to better mimic the Acrobat layout.
 boolean setField(String name, String value)
          Sets the field value.
 boolean setField(String name, String value, String display)
          Sets the field value and the display string.
 void setFieldCache(Map<String,TextField> fieldCache)
          Sets a cache for field appearances.
 boolean setFieldProperty(String field, String name, int value, int[] inst)
          Sets a field property.
 boolean setFieldProperty(String field, String name, Object value, int[] inst)
          Sets a field property.
 void setFields(FdfReader fdf)
          Sets the fields by FDF merging.
 void setFields(XfdfReader xfdf)
          Sets the fields by XFDF merging.
 void setGenerateAppearances(boolean generateAppearances)
          Sets the option to generate appearances.
 boolean setListOption(String fieldName, String[] exportValues, String[] displayValues)
          Sets the option list for fields of type list or combo.
 boolean setListSelection(String name, String[] value)
          Sets different values in a list selection.
 void setSubstitutionFonts(ArrayList<BaseFont> substitutionFonts)
          Sets a list of substitution fonts.
 boolean signatureCoversWholeDocument(String name)
          Checks is the signature covers the entire document or just part of it.
static Object[] splitDAelements(String da)
           
private  void updateByteRange(PdfPKCS7 pkcs7, PdfDictionary v)
           
 PdfPKCS7 verifySignature(String name)
          Verifies a signature.
 PdfPKCS7 verifySignature(String name, String provider)
          Verifies a signature.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

reader

PdfReader reader

writer

PdfWriter writer

fields

HashMap<String,AcroFields.Item> fields

topFirst

private int topFirst

sigNames

private HashMap<String,int[]> sigNames

append

private boolean append

DA_FONT

public static final int DA_FONT
See Also:
Constant Field Values

DA_SIZE

public static final int DA_SIZE
See Also:
Constant Field Values

DA_COLOR

public static final int DA_COLOR
See Also:
Constant Field Values

extensionFonts

private HashMap<Integer,BaseFont> extensionFonts

xfa

private XfaForm xfa

FIELD_TYPE_NONE

public static final int FIELD_TYPE_NONE
A field type invalid or not found.

See Also:
Constant Field Values

FIELD_TYPE_PUSHBUTTON

public static final int FIELD_TYPE_PUSHBUTTON
A field type.

See Also:
Constant Field Values

FIELD_TYPE_CHECKBOX

public static final int FIELD_TYPE_CHECKBOX
A field type.

See Also:
Constant Field Values

FIELD_TYPE_RADIOBUTTON

public static final int FIELD_TYPE_RADIOBUTTON
A field type.

See Also:
Constant Field Values

FIELD_TYPE_TEXT

public static final int FIELD_TYPE_TEXT
A field type.

See Also:
Constant Field Values

FIELD_TYPE_LIST

public static final int FIELD_TYPE_LIST
A field type.

See Also:
Constant Field Values

FIELD_TYPE_COMBO

public static final int FIELD_TYPE_COMBO
A field type.

See Also:
Constant Field Values

FIELD_TYPE_SIGNATURE

public static final int FIELD_TYPE_SIGNATURE
A field type.

See Also:
Constant Field Values

lastWasString

private boolean lastWasString

generateAppearances

private boolean generateAppearances
Holds value of property generateAppearances.


localFonts

private HashMap<String,BaseFont> localFonts

extraMarginLeft

private float extraMarginLeft

extraMarginTop

private float extraMarginTop

substitutionFonts

private ArrayList<BaseFont> substitutionFonts

stdFieldFontNames

private static final HashMap<String,String[]> stdFieldFontNames

totalRevisions

private int totalRevisions
Holds value of property totalRevisions.


fieldCache

private Map<String,TextField> fieldCache
Holds value of property fieldCache.

Since:
2.1.5 this used to be a HashMap

buttonRemove

private static final PdfName[] buttonRemove
Constructor Detail

AcroFields

AcroFields(PdfReader reader,
           PdfWriter writer)
Method Detail

fill

void fill()

getAppearanceStates

public String[] getAppearanceStates(String fieldName)
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.

Parameters:
fieldName - the fully qualified field name
Returns:
the list of names or null if the field does not exist

getListOption

private String[] getListOption(String fieldName,
                               int idx)

getListOptionExport

public String[] getListOptionExport(String fieldName)
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.

Parameters:
fieldName - the field name
Returns:
the list of export option values from fields of type list or combo

getListOptionDisplay

public String[] getListOptionDisplay(String fieldName)
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.

Parameters:
fieldName - the field name
Returns:
the list of export option values from fields of type list or combo

setListOption

public boolean setListOption(String fieldName,
                             String[] exportValues,
                             String[] displayValues)
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();
 

Parameters:
fieldName - the field name
exportValues - the export values
displayValues - the display values
Returns:
true if the operation succeeded, false otherwise

getFieldType

public int getFieldType(String fieldName)
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.

Parameters:
fieldName - the field name
Returns:
the field type

exportAsFdf

public void exportAsFdf(FdfWriter writer)
Export the fields as a FDF.

Parameters:
writer - the FDF writer

renameField

public boolean renameField(String oldName,
                           String newName)
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.

Parameters:
oldName - the old field name
newName - the new field name
Returns:
true if the renaming was successful, false otherwise

splitDAelements

public static Object[] splitDAelements(String da)

decodeGenericDictionary

public void decodeGenericDictionary(PdfDictionary merged,
                                    BaseField tx)
                             throws IOException,
                                    DocumentException
Throws:
IOException
DocumentException

getAppearance

PdfAppearance getAppearance(PdfDictionary merged,
                            String[] values,
                            String fieldName)
                      throws IOException,
                             DocumentException
Throws:
IOException
DocumentException

getAppearance

PdfAppearance getAppearance(PdfDictionary merged,
                            String text,
                            String fieldName)
                      throws IOException,
                             DocumentException
Throws:
IOException
DocumentException

getMKColor

BaseColor getMKColor(PdfArray ar)

getField

public String getField(String name)
Gets the field value.

Parameters:
name - the fully qualified field name
Returns:
the field value

getListSelection

public String[] getListSelection(String name)
Gets the field values of a Choice field.

Parameters:
name - the fully qualified field name
Returns:
the field value
Since:
2.1.3

setFieldProperty

public boolean setFieldProperty(String field,
                                String name,
                                Object value,
                                int[] inst)
Sets a field property. Valid property names are:

Parameters:
field - the field name
name - the property name
value - the property value
inst - an array of int indexing into AcroField.Item.merged elements to process. Set to null to process all
Returns:
true if the property exists, false otherwise

setFieldProperty

public boolean setFieldProperty(String field,
                                String name,
                                int value,
                                int[] inst)
Sets a field property. Valid property names are:

Parameters:
field - the field name
name - the property name
value - the property value
inst - an array of int indexing into AcroField.Item.merged elements to process. Set to null to process all
Returns:
true if the property exists, false otherwise

mergeXfaData

public void mergeXfaData(Node n)
                  throws IOException,
                         DocumentException
Merges an XML data structure into this form.

Parameters:
n - the top node of the data structure
Throws:
IOException - on error
DocumentException - o error

setFields

public void setFields(FdfReader fdf)
               throws IOException,
                      DocumentException
Sets the fields by FDF merging.

Parameters:
fdf - the FDF form
Throws:
IOException - on error
DocumentException - on error

setFields

public void setFields(XfdfReader xfdf)
               throws IOException,
                      DocumentException
Sets the fields by XFDF merging.

Parameters:
xfdf - the XFDF form
Throws:
IOException - on error
DocumentException - on error

regenerateField

public boolean regenerateField(String name)
                        throws IOException,
                               DocumentException
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.

Parameters:
name - the fully qualified field name or the partial name in the case of XFA forms
Returns:
true if the field was found and changed, false otherwise
Throws:
IOException - on error
DocumentException - on error

setField

public boolean setField(String name,
                        String value)
                 throws IOException,
                        DocumentException
Sets the field value.

Parameters:
name - the fully qualified field name or the partial name in the case of XFA forms
value - the field value
Returns:
true if the field was found and changed, false otherwise
Throws:
IOException - on error
DocumentException - on error

setField

public boolean setField(String name,
                        String value,
                        String display)
                 throws IOException,
                        DocumentException
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.

Parameters:
name - the fully qualified field name or the partial name in the case of XFA forms
value - the field value
display - the string that is used for the appearance. If null the value parameter will be used
Returns:
true if the field was found and changed, false otherwise
Throws:
IOException - on error
DocumentException - on error

setListSelection

public boolean setListSelection(String name,
                                String[] value)
                         throws IOException,
                                DocumentException
Sets different values in a list selection. No appearance is generated yet; nor does the code check if multiple select is allowed.

Parameters:
name - the name of the field
value - an array with values that need to be selected
Returns:
true only if the field value was changed
Throws:
IOException
DocumentException
Since:
2.1.4

isInAP

boolean isInAP(PdfDictionary dic,
               PdfName check)

getFields

public HashMap<String,AcroFields.Item> getFields()
Gets all the fields. The fields are keyed by the fully qualified field name and the value is an instance of AcroFields.Item.

Returns:
all the fields

getFieldItem

public AcroFields.Item getFieldItem(String name)
Gets the field structure.

Parameters:
name - the name of the field
Returns:
the field structure or null if the field does not exist

getTranslatedFieldName

public String getTranslatedFieldName(String name)
Gets the long XFA translated name.

Parameters:
name - the name of the field
Returns:
the long field name

getFieldPositions

public float[] getFieldPositions(String 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.

Parameters:
name - the field name
Returns:
the positions or null if field does not exist

removeRefFromArray

private int removeRefFromArray(PdfArray array,
                               PdfObject refo)

removeFieldsFromPage

public boolean removeFieldsFromPage(int page)
Removes all the fields from page.

Parameters:
page - the page to remove the fields from
Returns:
true if any field was removed, false otherwise

removeField

public boolean removeField(String name,
                           int page)
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.

Parameters:
name - the field name
page - the page to remove the field from or -1 to remove it from all the pages
Returns:
true if the field exists, false otherwise

removeField

public boolean removeField(String name)
Removes a field from the document.

Parameters:
name - the field name
Returns:
true if the field exists, false otherwise

isGenerateAppearances

public boolean isGenerateAppearances()
Gets the property generateAppearances.

Returns:
the property generateAppearances

setGenerateAppearances

public void setGenerateAppearances(boolean 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.

Parameters:
generateAppearances - the option to generate appearances

getSignatureNames

public ArrayList<String> getSignatureNames()
Gets the field names that have signatures and are signed.

Returns:
the field names that have signatures and are signed

getBlankSignatureNames

public ArrayList<String> getBlankSignatureNames()
Gets the field names that have blank signatures.

Returns:
the field names that have blank signatures

getSignatureDictionary

public PdfDictionary getSignatureDictionary(String name)
Gets the signature dictionary, the one keyed by /V.

Parameters:
name - the field name
Returns:
the signature dictionary keyed by /V or null if the field is not a signature

signatureCoversWholeDocument

public boolean signatureCoversWholeDocument(String name)
Checks is the signature covers the entire document or just part of it.

Parameters:
name - the signature field name
Returns:
true if the signature covers the entire document, false otherwise

verifySignature

public PdfPKCS7 verifySignature(String name)
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]);
 }
 

Parameters:
name - the signature field name
Returns:
a PdfPKCS7 class to continue the verification

verifySignature

public PdfPKCS7 verifySignature(String name,
                                String provider)
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]);
 }
 

Parameters:
name - the signature field name
provider - the provider or null for the default provider
Returns:
a PdfPKCS7 class to continue the verification

updateByteRange

private void updateByteRange(PdfPKCS7 pkcs7,
                             PdfDictionary v)

markUsed

private void markUsed(PdfObject obj)

getTotalRevisions

public int getTotalRevisions()
Gets the total number of revisions this document has.

Returns:
the total number of revisions

getRevision

public int getRevision(String field)
Gets this field revision.

Parameters:
field - the signature field name
Returns:
the revision or zero if it's not a signature field

extractRevision

public InputStream extractRevision(String field)
                            throws IOException
Extracts a revision from the document.

Parameters:
field - the signature field name
Returns:
an InputStream covering the revision. Returns null if it's not a signature field
Throws:
IOException - on error

getFieldCache

public Map<String,TextField> getFieldCache()
Gets the appearances cache.

Returns:
the appearances cache
Since:
2.1.5 this method used to return a HashMap

setFieldCache

public void setFieldCache(Map<String,TextField> 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();
 }
 

Parameters:
fieldCache - a Map that will carry the cached appearances
Since:
2.1.5 this method used to take a HashMap as parameter

setExtraMargin

public void setExtraMargin(float extraMarginLeft,
                           float extraMarginTop)
Sets extra margins in text fields to better mimic the Acrobat layout.

Parameters:
extraMarginLeft - the extra margin left
extraMarginTop - the extra margin top

addSubstitutionFont

public void addSubstitutionFont(BaseFont font)
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.

Parameters:
font - the font

getSubstitutionFonts

public ArrayList<BaseFont> getSubstitutionFonts()
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.

Returns:
the list

setSubstitutionFonts

public void setSubstitutionFonts(ArrayList<BaseFont> substitutionFonts)
Sets a list of substitution fonts. The list is composed of BaseFont and can also be null. The fonts in this list will be used if the original font doesn't contain the needed glyphs.

Parameters:
substitutionFonts - the list

getXfa

public XfaForm getXfa()
Gets the XFA form processor.

Returns:
the XFA form processor

removeXfa

public void removeXfa()
Removes the XFA stream from the document.


getNewPushbuttonFromField

public PushbuttonField getNewPushbuttonFromField(String field)
Creates a new pushbutton from an existing field. If there are several pushbuttons with the same name only the first one is used. 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 replacePushbuttonField(String,PdfFormField).

Parameters:
field - the field name that should be a pushbutton
Returns:
a new pushbutton or null if the field is not a pushbutton

getNewPushbuttonFromField

public PushbuttonField getNewPushbuttonFromField(String field,
                                                 int order)
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 replacePushbuttonField(String,PdfFormField,int).

Parameters:
field - the field name that should be a pushbutton
order - the field order in fields with same name
Returns:
a new pushbutton or null if the field is not a pushbutton
Since:
2.0.7

replacePushbuttonField

public boolean replacePushbuttonField(String field,
                                      PdfFormField button)
Replaces the first field with a new pushbutton. The pushbutton can be created with getNewPushbuttonFromField(String) from the same document or it can be a generic PdfFormField of the type pushbutton.

Parameters:
field - the field name
button - the PdfFormField representing the pushbutton
Returns:
true if the field was replaced, false if the field was not a pushbutton

replacePushbuttonField

public boolean replacePushbuttonField(String field,
                                      PdfFormField button,
                                      int order)
Replaces the designated field with a new pushbutton. The pushbutton can be created with getNewPushbuttonFromField(String,int) from the same document or it can be a generic PdfFormField of the type pushbutton.

Parameters:
field - the field name
button - the PdfFormField representing the pushbutton
order - the field order in fields with same name
Returns:
true if the field was replaced, false if the field was not a pushbutton
Since:
2.0.7

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