<?php
// require_once('Zend/Paginator.php');

class Qs_Paginator extends Zend_Paginator
{
    public static function factory($data, $adapter = Qs_Paginator::INTERNAL_ADAPTER, array $prefixPaths = null)
    {
        if ($adapter == Qs_Paginator::INTERNAL_ADAPTER) {
            if (is_array($data)) {
                $adapter = 'Array';
            } else if ($data instanceof Zend_Db_Table_Select) {
                $adapter = 'DbTableSelect';
            } else if ($data instanceof Zend_Db_Select) {
                $adapter = 'DbSelect';
            } else if ($data instanceof Iterator) {
                $adapter = 'Iterator';
            } else if (is_integer($data)) {
                $adapter = 'Null';
            } else {
                $type = (is_object($data)) ? get_class($data) : gettype($data);

                /**
                 * @see Zend_Paginator_Exception
                 */
                throw new Zend_Paginator_Exception('No adapter for type ' . $type);
            }
        }

        $pluginLoader = Qs_Paginator::getAdapterLoader();

        if (null !== $prefixPaths) {
            foreach ($prefixPaths as $prefix => $path) {
                $pluginLoader->addPrefixPath($prefix, $path);
            }
        }

        $adapterClassName = $pluginLoader->load($adapter);

        return new Qs_Paginator(new $adapterClassName($data));
    }

    public function setCurrentItems($currentItems)
    {
        $this->_currentItems = $currentItems;
    }

    /**
     * Returns the adapter loader.  If it doesn't exist it's created.
     *
     * @return Zend_Loader_PluginLoader
     */
    public static function getAdapterLoader()
    {
        if (self::$_adapterLoader === null) {
            $prefixToPaths = array(
                'Zend_Paginator_Adapter' => 'Zend/Paginator/Adapter',
                'Qs_Paginator_Adapter'   => 'Qs/Paginator/Adapter',
            );
            self::$_adapterLoader = new Zend_Loader_PluginLoader($prefixToPaths);
        }
        return self::$_adapterLoader;
    }
}