Joomla! Documentation™

Description

Returns the global JDocument object, only creating it if it doesn't already exist.

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Syntax

static getInstance($type= 'html', $attributes=array())

Parameter Name	Default Value	Description
$type	'html'	$type The document type to instantiate
$attributes	array()

Returns

object The document object.

Defined in

libraries/joomla/document/document.php

Importing

jimport( 'joomla.document.document' );

Source Body

public static function getInstance($type = 'html', $attributes = array())
{
        static $instances;

        if (!isset($instances)) {
                $instances = array();
        }

        $signature = serialize(array($type, $attributes));

        if (empty($instances[$signature]))
        {
                $type   = preg_replace('/[^A-Z0-9_\.-]/i', '', $type);
                $path   = dirname(__FILE__).DS.$type.DS.$type.'.php';
                $ntype  = null;

                // Check if the document type exists
                if (!file_exists($path))
                {
                        // Default to the raw format
                        $ntype  = $type;
                        $type   = 'raw';
                }

                // Determine the path and class
                $class = 'JDocument'.$type;
                if (!class_exists($class))
                {
                        $path   = dirname(__FILE__).DS.$type.DS.$type.'.php';
                        if (file_exists($path)) {
                                require_once $path;
                        } else {
                                JError::raiseError(500,JText::_('Unable to load document class'));
                        }
                }

                $instance       = new $class($attributes);
                $instances[$signature] = &$instance;

                if (!is_null($ntype))
                {
                        // Set the type to the Document type originally requested
                        $instance->setType($ntype);
                }
        }

        return $instances[$signature];
}

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