--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Pdf/Element.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,176 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Pdf
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Element.php 22797 2010-08-06 15:02:12Z alexander $
+ */
+
+
+/**
+ * PDF file element implementation
+ *
+ * @package    Zend_Pdf
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+abstract class Zend_Pdf_Element
+{
+    const TYPE_BOOL        = 1;
+    const TYPE_NUMERIC     = 2;
+    const TYPE_STRING      = 3;
+    const TYPE_NAME        = 4;
+    const TYPE_ARRAY       = 5;
+    const TYPE_DICTIONARY  = 6;
+    const TYPE_STREAM      = 7;
+    const TYPE_NULL        = 11;
+
+    /**
+     * Reference to the top level indirect object, which contains this element.
+     *
+     * @var Zend_Pdf_Element_Object
+     */
+    private $_parentObject = null;
+
+    /**
+     * Return type of the element.
+     * See ZPdfPDFConst for possible values
+     *
+     * @return integer
+     */
+    abstract public function getType();
+
+    /**
+     * Convert element to a string, which can be directly
+     * written to a PDF file.
+     *
+     * $factory parameter defines operation context.
+     *
+     * @param Zend_Pdf_Factory $factory
+     * @return string
+     */
+    abstract public function toString($factory = null);
+
+    const CLONE_MODE_SKIP_PAGES    = 1; // Do not follow pages during deep copy process
+    const CLONE_MODE_FORCE_CLONING = 2; // Force top level object cloning even it's already processed
+
+    /**
+     * Detach PDF object from the factory (if applicable), clone it and attach to new factory.
+     *
+     * @todo It's nevessry to check if SplObjectStorage class works faster
+     * (Needs PHP 5.3.x to attach object _with_ additional data to storage)
+     *
+     * @param Zend_Pdf_ElementFactory $factory  The factory to attach
+     * @param array &$processed List of already processed indirect objects, used to avoid objects duplication
+     * @param integer $mode  Cloning mode (defines filter for objects cloning)
+     * @returns Zend_Pdf_Element
+     */
+    public function makeClone(Zend_Pdf_ElementFactory $factory, array &$processed, $mode)
+    {
+        return clone $this;
+    }
+
+    /**
+     * Set top level parent indirect object.
+     *
+     * @param Zend_Pdf_Element_Object $parent
+     */
+    public function setParentObject(Zend_Pdf_Element_Object $parent)
+    {
+        $this->_parentObject = $parent;
+    }
+
+
+    /**
+     * Get top level parent indirect object.
+     *
+     * @return Zend_Pdf_Element_Object
+     */
+    public function getParentObject()
+    {
+        return $this->_parentObject;
+    }
+
+
+    /**
+     * Mark object as modified, to include it into new PDF file segment.
+     *
+     * We don't automate this action to keep control on PDF update process.
+     * All new objects are treated as "modified" automatically.
+     */
+    public function touch()
+    {
+        if ($this->_parentObject !== null) {
+            $this->_parentObject->touch();
+        }
+    }
+
+    /**
+     * Clean up resources, used by object
+     */
+    public function cleanUp()
+    {
+        // Do nothing
+    }
+
+    /**
+     * Convert PDF element to PHP type.
+     *
+     * @return mixed
+     */
+    public function toPhp()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Convert PHP value into PDF element.
+     *
+     * @param mixed $input
+     * @return Zend_Pdf_Element
+     */
+    public static function phpToPdf($input)
+    {
+        if (is_numeric($input)) {
+            require_once 'Zend/Pdf/Element/Numeric.php';
+            return new Zend_Pdf_Element_Numeric($input);
+        } else if (is_bool($input)) {
+            require_once 'Zend/Pdf/Element/Boolean.php';
+            return new Zend_Pdf_Element_Boolean($input);
+        } else if (is_array($input)) {
+            $pdfElementsArray = array();
+            $isDictionary = false;
+
+            foreach ($input as $key => $value) {
+                if (is_string($key)) {
+                    $isDictionary = true;
+                }
+                $pdfElementsArray[$key] = Zend_Pdf_Element::phpToPdf($value);
+            }
+
+            if ($isDictionary) {
+                require_once 'Zend/Pdf/Element/Dictionary.php';
+                return new Zend_Pdf_Element_Dictionary($pdfElementsArray);
+            } else {
+                require_once 'Zend/Pdf/Element/Array.php';
+                return new Zend_Pdf_Element_Array($pdfElementsArray);
+            }
+        } else {
+            require_once 'Zend/Pdf/Element/String.php';
+            return new Zend_Pdf_Element_String((string)$input);
+        }
+    }
+}