/framework/vendor/zend/Zend/Pdf/Element/Null.php

 1<?php
 2/**
 3 * Zend Framework
 4 *
 5 * LICENSE
 6 *
 7 * This source file is subject to the new BSD license that is bundled
 8 * with this package in the file LICENSE.txt.
 9 * It is also available through the world-wide-web at this URL:
10 * http://framework.zend.com/license/new-bsd
11 * If you did not receive a copy of the license and are unable to
12 * obtain it through the world-wide-web, please send an email
13 * to license@zend.com so we can send you a copy immediately.
14 *
15 * @category   Zend
16 * @package    Zend_Pdf
17 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
18 * @license    http://framework.zend.com/license/new-bsd     New BSD License
19 * @version    $Id: Null.php 20096 2010-01-06 02:05:09Z bkarwin $
20 */
21
22
23/** Zend_Pdf_Element */
24require_once 'Zend/Pdf/Element.php';
25
26
27/**
28 * PDF file 'null' element implementation
29 *
30 * @category   Zend
31 * @package    Zend_Pdf
32 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
33 * @license    http://framework.zend.com/license/new-bsd     New BSD License
34 */
35class Zend_Pdf_Element_Null extends Zend_Pdf_Element
36{
37    /**
38     * Object value. Always null.
39     *
40     * @var mixed
41     */
42    public $value;
43
44
45    /**
46     * Object constructor
47     */
48    public function __construct()
49    {
50        $this->value = null;
51    }
52
53
54    /**
55     * Return type of the element.
56     *
57     * @return integer
58     */
59    public function getType()
60    {
61        return Zend_Pdf_Element::TYPE_NULL;
62    }
63
64
65    /**
66     * Return object as string
67     *
68     * @param Zend_Pdf_Factory $factory
69     * @return string
70     */
71    public function toString($factory = null)
72    {
73        return 'null';
74    }
75}