<?php
/**
 * patTemplate-function to display teaser items
 *
 * @package Wombat
 * @subpackage patTemplate
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */

/**
 * patTemplate-function to display banner items
 *
 *  
 * @version 0.2.1
 * @package Wombat
 * @subpackage patTemplate
 */
class patTemplate_Function_Teaser extends patTemplate_Function
{

    const TABLE_TEASER  =   'teaser';

    /**
     * name of the function
     * @access   private
     * @var      string
     */
    public $_name  =   'Teaser';

    /**
     * tell that this function has to be executed during runtime
     * @var string
     */
    public $_type = PATTEMPLATE_FUNCTION_RUNTIME;
    
    /**
     * template engine
     * @var patTemplate
     */
    private $tmpl;

    /**
     * Table Datasource
     * @var WBDatasource_Table
     */
    private $table;
    
    /**
     * Call the function
     *
     * @access public
     * @param array $params parameters of the function (= attributes of the tag)
     * @param string $content inside tag
     * @return string content to insert into the template
     */
    public function call($params, $content)
    {        
        $paramsDef  =   array(
                                'tmpl'      =>  'default',
                                'class'     =>  '',
                                'namespace' =>  '',
                                'id'        =>  ''
                            );
        $params         =   array_merge($paramsDef, $params);
        if (empty($params['id'])) {
            $params['id']   =   'wb-teaser-' . substr(md5(rand()), -8);
        }

        $this->tmpl =   WBClass::create('patTemplate');
        $this->tmpl->addGlobalVars($params, 'param_');
        $this->tmpl->readTemplatesFromInput(sprintf('Teaser/%s.tmpl', $params['tmpl']));

        $this->table    =   WBClass::create('WBDatasource_Table');
        $clause     =   array();
        $clause[]   =   array(
                                'field' =>  'enabled',
                                'value' =>  1
                            );

        if (!empty($params['namespace'])) {
            $clause[]   =   array(
                                'field' =>  'namespace',
                                'value' =>  $params['namespace']
                            );
        }

        $list   =   $this->table->get(self::TABLE_TEASER, null, null, $clause);
        $this->tmpl->addGlobalVar('list_count', count($list));
        if ($this->tmpl->exists('list_entry')) {
            $this->tmpl->addRows('list_entry', $list);
            $max    =   WBParam::get('wb/template/listtemplatemax', 10);
            for ($i = 1; $i < $max; ++$i) {
                if (!$this->tmpl->exists('list_entry_' . $i)) {
                    break;
                }
                $this->tmpl->addRows('list_entry_' . $i, $list);
            }
        }
        return $this->tmpl->getParsedTemplate('snippet');
    }
}