/*
* $Id: PdfArray.java 2739 2007-05-04 11:24:51Z blowagie $
* $Name$
*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.pdf;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;
/**
* <CODE>PdfArray</CODE> is the PDF Array object.
* <P>
* 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 (]).<BR>
* This object is described in the 'Portable Document Format Reference Manual version 1.7'
* section 3.2.5 (page 58).
*
* @see PdfObject
*/
public class PdfArray extends PdfObject {
// membervariables
/** this is the actual array of PdfObjects */
protected ArrayList arrayList;
// constructors
/**
* Constructs an empty <CODE>PdfArray</CODE>-object.
*/
public PdfArray() {
super(ARRAY);
arrayList = new ArrayList();
}
/**
* Constructs an <CODE>PdfArray</CODE>-object, containing 1 <CODE>PdfObject</CODE>.
*
* @param object a <CODE>PdfObject</CODE> that has to be added to the array
*/
public PdfArray(PdfObject object) {
super(ARRAY);
arrayList = new ArrayList();
arrayList.add(object);
}
public PdfArray(float values[]) {
super(ARRAY);
arrayList = new ArrayList();
add(values);
}
public PdfArray(int values[]) {
super(ARRAY);
arrayList = new ArrayList();
add(values);
}
/**
* Constructs an <CODE>PdfArray</CODE>-object, containing all the <CODE>PdfObject</CODE>s in a given <CODE>PdfArray</CODE>.
*
* @param array a <CODE>PdfArray</CODE> that has to be added to the array
*/
public PdfArray(PdfArray array) {
super(ARRAY);
arrayList = new ArrayList(array.getArrayList());
}
// methods overriding some methods in PdfObject
/**
* Returns the PDF representation of this <CODE>PdfArray</CODE>.
*/
public void toPdf(PdfWriter writer, OutputStream os) throws IOException {
os.write('[');
Iterator i = arrayList.iterator();
PdfObject object;
int type = 0;
if (i.hasNext()) {
object = (PdfObject) i.next();
if (object == null)
object = PdfNull.PDFNULL;
object.toPdf(writer, os);
}
while (i.hasNext()) {
object = (PdfObject) i.next();
if (object == null)
object = PdfNull.PDFNULL;
type = object.type();
if (type != PdfObject.ARRAY && type != PdfObject.DICTIONARY && type != PdfObject.NAME && type != PdfObject.STRING)
os.write(' ');
object.toPdf(writer, os);
}
os.write(']');
}
// methods concerning the ArrayList-membervalue
/**
* Returns an ArrayList containing <CODE>PdfObject</CODE>s.
*
* @return an ArrayList
*/
public ArrayList getArrayList() {
return arrayList;
}
/**
* Returns the number of entries in the array.
*
* @return the size of the ArrayList
*/
public int size() {
return arrayList.size();
}
/**
* Adds a <CODE>PdfObject</CODE> to the <CODE>PdfArray</CODE>.
*
* @param object <CODE>PdfObject</CODE> to add
* @return <CODE>true</CODE>
*/
public boolean add(PdfObject object) {
return arrayList.add(object);
}
public boolean add(float values[]) {
for (int k = 0; k < values.length; ++k)
arrayList.add(new PdfNumber(values[k]));
return true;
}
public boolean add(int values[]) {
for (int k = 0; k < values.length; ++k)
arrayList.add(new PdfNumber(values[k]));
return true;
}
/**
* Adds a <CODE>PdfObject</CODE> to the <CODE>PdfArray</CODE>.
* <P>
* The newly added object will be the first element in the <CODE>ArrayList</CODE>.
*
* @param object <CODE>PdfObject</CODE> to add
*/
public void addFirst(PdfObject object) {
arrayList.add(0, object);
}
/**
* Checks if the <CODE>PdfArray</CODE> already contains a certain <CODE>PdfObject</CODE>.
*
* @param object <CODE>PdfObject</CODE> to check
* @return <CODE>true</CODE>
*/
public boolean contains(PdfObject object) {
return arrayList.contains(object);
}
public ListIterator listIterator() {
return arrayList.listIterator();
}
public String toString() {
return arrayList.toString();
}
public PdfObject getPdfObject( int idx ) {
return (PdfObject)arrayList.get(idx);
}
public PdfObject getDirectObject( int idx ) {
return PdfReader.getPdfObject(getPdfObject(idx));
}
// more of the same like PdfDictionary. (MAS 2/17/06)
public PdfDictionary getAsDict(int idx) {
PdfDictionary dict = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isDictionary())
dict = (PdfDictionary) orig;
return dict;
}
public PdfArray getAsArray(int idx) {
PdfArray array = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isArray())
array = (PdfArray) orig;
return array;
}
public PdfStream getAsStream(int idx) {
PdfStream stream = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isStream())
stream = (PdfStream) orig;
return stream;
}
public PdfString getAsString(int idx) {
PdfString string = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isString())
string = (PdfString) orig;
return string;
}
public PdfNumber getAsNumber(int idx) {
PdfNumber number = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isNumber())
number = (PdfNumber) orig;
return number;
}
public PdfName getAsName(int idx) {
PdfName name = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isName())
name = (PdfName) orig;
return name;
}
public PdfBoolean getAsBoolean(int idx) {
PdfBoolean bool = null;
PdfObject orig = getDirectObject(idx);
if (orig != null && orig.isBoolean())
bool = (PdfBoolean) orig;
return bool;
}
public PdfIndirectReference getAsIndirectObject(int idx) {
PdfIndirectReference ref = null;
PdfObject orig = getPdfObject(idx); // not getDirect this time.
if (orig != null && orig.isIndirect())
ref = (PdfIndirectReference) orig;
return ref;
}
}