com.lowagie.text.pdf

Class PdfArray

java.lang.Object

com.lowagie.text.pdf.PdfObject

com.lowagie.text.pdf.PdfArray

Direct Known Subclasses:

PdfBorderArray, PdfDashPattern, PdfDestination, PdfRectangle

public class PdfArray
extends PdfObject

PdfArray is the PDF Array object.

An array is a sequence of PDF objects. An array may contain a mixture of object types. An array is written as a left square bracket ([), followed by a sequence of objects, followed by a right square bracket (]).
This object is described in the 'Portable Document Format Reference Manual version 1.7' section 3.2.5 (page 58).

See Also:

PdfObject

Field Summary

Fields

Modifier and Type	Field and Description
protected ArrayList	arrayList this is the actual array of PdfObjects

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

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

Constructor Summary

Constructors

Constructor and Description
PdfArray() Constructs an empty PdfArray-object.
PdfArray(ArrayList l) Constructs a PdfArray, containing all elements of a specified ArrayList.
PdfArray(float[] values) Constructs a PdfArray-object, containing all float values in a specified array.
PdfArray(int[] values) Constructs a PdfArray-object, containing all int values in a specified array.
PdfArray(PdfArray array) Constructs an PdfArray-object, containing all PdfObjects in a specified PdfArray.
PdfArray(PdfObject object) Constructs an PdfArray-object, containing 1 PdfObject.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(float[] values) Adds an array of float values to end of the PdfArray.
boolean	add(int[] values) Adds an array of int values to end of the PdfArray.
void	add(int index, PdfObject element) Inserts the specified element at the specified position.
boolean	add(PdfObject object) Adds a PdfObject to the end of the PdfArray.
void	addFirst(PdfObject object) Inserts a PdfObject at the beginning of the PdfArray.
boolean	contains(PdfObject object) Checks if the PdfArray already contains a certain PdfObject.
ArrayList	getArrayList() Deprecated.
PdfArray	getAsArray(int idx) Returns a PdfObject as a PdfArray, resolving indirect references.
PdfBoolean	getAsBoolean(int idx) Returns a PdfObject as a PdfBoolean, resolving indirect references.
PdfDictionary	getAsDict(int idx) Returns a PdfObject as a PdfDictionary, resolving indirect references.
PdfIndirectReference	getAsIndirectObject(int idx) Returns a PdfObject as a PdfIndirectReference.
PdfName	getAsName(int idx) Returns a PdfObject as a PdfName, resolving indirect references.
PdfNumber	getAsNumber(int idx) Returns a PdfObject as a PdfNumber, resolving indirect references.
PdfStream	getAsStream(int idx) Returns a PdfObject as a PdfStream, resolving indirect references.
PdfString	getAsString(int idx) Returns a PdfObject as a PdfString, resolving indirect references.
PdfObject	getDirectObject(int idx) Returns the PdfObject with the specified index, resolving a possible indirect reference to a direct object.
PdfObject	getPdfObject(int idx) Returns the PdfObject with the specified index.
boolean	isEmpty() Returns true if the array is empty.
ListIterator	listIterator() Returns the list iterator for the array.
PdfObject	remove(int idx) Remove the element at the specified position from the array.
PdfObject	set(int idx, PdfObject obj) Overwrites a specified location of the array, returning the previous value
int	size() Returns the number of entries in the array.
void	toPdf(PdfWriter writer, OutputStream os) Writes the PDF representation of this PdfArray as an array of byte to the specified OutputStream.
String	toString() Returns a string representation of this PdfArray.

Methods inherited from class com.lowagie.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

Field Detail

arrayList

protected ArrayList arrayList

this is the actual array of PdfObjects

Constructor Detail

PdfArray

public PdfArray()

Constructs an empty PdfArray-object.

PdfArray

public PdfArray(PdfObject object)

Constructs an PdfArray-object, containing 1 PdfObject.

Parameters:

object - a PdfObject that has to be added to the array

PdfArray

public PdfArray(float[] values)

Constructs a PdfArray-object, containing all float values in a specified array. The float values are internally converted to PdfNumber objects.

Parameters:

values - an array of float values to be added

PdfArray

public PdfArray(int[] values)

Constructs a PdfArray-object, containing all int values in a specified array. The int values are internally converted to PdfNumber objects.

Parameters:

values - an array of int values to be added

PdfArray

public PdfArray(ArrayList l)

Constructs a PdfArray, containing all elements of a specified ArrayList.

Parameters:

l - an ArrayList with PdfObjects to be added to the array

Throws:

ClassCastException - if the ArrayList contains something that isn't a PdfObject

Since:

2.1.3

PdfArray

public PdfArray(PdfArray array)

Constructs an PdfArray-object, containing all PdfObjects in a specified PdfArray.

Parameters:

array - a PdfArray to be added to the array

Method Detail

toPdf

public void toPdf(PdfWriter writer,
         OutputStream os)
           throws IOException

Writes the PDF representation of this PdfArray as an array of byte to the specified OutputStream.

Overrides:

toPdf in class PdfObject

Parameters:

writer - for backwards compatibility

os - the OutputStream to write the bytes to.

Throws:

IOException

toString

public String toString()

Returns a string representation of this PdfArray. The string representation consists of a list of all PdfObjects contained in this PdfArray, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters ", " (comma and space).

Overrides:

toString in class PdfObject

Returns:

the string representation of this PdfArray

set

public PdfObject set(int idx,
            PdfObject obj)

Overwrites a specified location of the array, returning the previous value

Parameters:

idx - The index of the element to be overwritten

obj - new value for the specified index

Returns:

the previous value

Throws:

IndexOutOfBoundsException - if the specified position doesn't exist

Since:

2.1.5

remove

public PdfObject remove(int idx)

Remove the element at the specified position from the array. Shifts any subsequent elements to the left (subtracts one from their indices).

Parameters:

idx - The index of the element to be removed.

Throws:

IndexOutOfBoundsException - the specified position doesn't exist

Since:

2.1.5

getArrayList

public ArrayList getArrayList()

Deprecated.

Get the internal arrayList for this PdfArray. Not Recommended.

Returns:

the internal ArrayList. Naughty Naughty.

size

public int size()

Returns the number of entries in the array.

Returns:

the size of the ArrayList

isEmpty

public boolean isEmpty()

Returns true if the array is empty.

Returns:

true if the array is empty

Since:

2.1.5

add

public boolean add(PdfObject object)

Adds a PdfObject to the end of the PdfArray. The PdfObject will be the last element.

Parameters:

object - PdfObject to add

Returns:

always true

add

public boolean add(float[] values)

Adds an array of float values to end of the PdfArray. The values will be the last elements. The float values are internally converted to PdfNumber objects.

Parameters:

values - An array of float values to add

Returns:

always true

add

public boolean add(int[] values)

Adds an array of int values to end of the PdfArray. The values will be the last elements. The int values are internally converted to PdfNumber objects.

Parameters:

values - An array of int values to add

Returns:

always true

add

public void add(int index,
       PdfObject element)

Inserts the specified element at the specified position. Shifts the element currently at that position (if any) and any subsequent elements to the right (adds one to their indices).

Parameters:

index - The index at which the specified element is to be inserted

element - The element to be inserted

Throws:

IndexOutOfBoundsException - if the specified index is larger than the last position currently set, plus 1.

Since:

2.1.5

addFirst

public void addFirst(PdfObject object)

Inserts a PdfObject at the beginning of the PdfArray. The PdfObject will be the first element, any other elements will be shifted to the right (adds one to their indices).

Parameters:

object - The PdfObject to add

contains

public boolean contains(PdfObject object)

Checks if the PdfArray already contains a certain PdfObject.

Parameters:

object - The PdfObject to check

Returns:

true

listIterator

public ListIterator listIterator()

Returns the list iterator for the array.

Returns:

a ListIterator

getPdfObject

public PdfObject getPdfObject(int idx)

Returns the PdfObject with the specified index. A possible indirect references is not resolved, so the returned PdfObject may be either a direct object or an indirect reference, depending on how the object is stored in the PdfArray.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

A PdfObject

getDirectObject

public PdfObject getDirectObject(int idx)

Returns the PdfObject with the specified index, resolving a possible indirect reference to a direct object. Thus this method will never return a PdfIndirectReference object.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

A direct PdfObject or null

getAsDict

public PdfDictionary getAsDict(int idx)

Returns a PdfObject as a PdfDictionary, resolving indirect references. The object corresponding to the specified index is retrieved and resolvedto a direct object. If it is a PdfDictionary, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfDictionary object, or null

getAsArray

public PdfArray getAsArray(int idx)

Returns a PdfObject as a PdfArray, resolving indirect references. The object corresponding to the specified index is retrieved and resolved to a direct object. If it is a PdfArray, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfArray object, or null

getAsStream

public PdfStream getAsStream(int idx)

Returns a PdfObject as a PdfStream, resolving indirect references. The object corresponding to the specified index is retrieved and resolved to a direct object. If it is a PdfStream, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfStream object, or null

getAsString

public PdfString getAsString(int idx)

Returns a PdfObject as a PdfString, resolving indirect references. The object corresponding to the specified index is retrieved and resolved to a direct object. If it is a PdfString, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfString object, or null

getAsNumber

public PdfNumber getAsNumber(int idx)

Returns a PdfObject as a PdfNumber, resolving indirect references. The object corresponding to the specified index is retrieved and resolved to a direct object. If it is a PdfNumber, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfNumber object, or null

getAsName

public PdfName getAsName(int idx)

Returns a PdfObject as a PdfName, resolving indirect references. The object corresponding to the specified index is retrieved and resolved to a direct object. If it is a PdfName, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfName object, or null

getAsBoolean

public PdfBoolean getAsBoolean(int idx)

Returns a PdfObject as a PdfBoolean, resolving indirect references. The object corresponding to the specified index is retrieved and resolved to a direct object. If it is a PdfBoolean, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfBoolean object, or null

getAsIndirectObject

public PdfIndirectReference getAsIndirectObject(int idx)

Returns a PdfObject as a PdfIndirectReference. The object corresponding to the specified index is retrieved. If it is a PdfIndirectReference, it is cast down and returned as such. Otherwise null is returned.

Parameters:

idx - The index of the PdfObject to be returned

Returns:

the corresponding PdfIndirectReference object, or null