Element.php

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<?php
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;

    private $_parentObject = null;

    abstract public function getType();

    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

    public function makeClone(Zend_Pdf_ElementFactory $factory, array &$processed, $mode)
    {
        return clone $this;
    }

    public function setParentObject(Zend_Pdf_Element_Object $parent)
    {
        $this->_parentObject = $parent;
    }


    public function getParentObject()
    {
        return $this->_parentObject;
    }


    public function touch()
    {
        if ($this->_parentObject !== null) {
            $this->_parentObject->touch();
        }
    }

    public function cleanUp()
    {
        // Do nothing
    }

    public function toPhp()
    {
        return $this->value;
    }

    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);
        }
    }
}