<?php
/**
 * Content display menu
 * 
 * @author gERD Schaufelberger <gerd@exit0.net>
 * @copyright 2004 by http://wombat.exit0.net
 * @package wombatModule
 * @subpackage TreeMenu
 */
 
/**
 * Displays html tree menues
 *
 * @version 1.1.0
 * @package wombatSite
 * @subpackage module
 */
class wbModule_TreeMenu extends wbModule
{
   /**
    * some parameter
    *
    * @access private
    * @public  array   $_params
    */
    public $_params = array(
                        'tmpldir'   =>  'module/TreeMenu',
                        'tmpl'      =>  'menu'
                    );


   /**
    * some request defaults
    *
    * @access private
    * @public  array   $_requestDefaults
    */
    public $_requestDefaults = array(
                        'path'  =>  NULL,
                    );
   /**
    * path as array
    *
    * @access private
    * @public  array   $_path
    */
    public $_path = array();

   /**
    * recieve content
    *
    * @return string $html
    */
    function getHtml() {    
        wbFactory::includeClass( 'wbMenuTools' );

        $menu   =   wbMenuTools::getMenu();
        if( patErrorManager::isError( $menu ) ) {
            return $menu;
        }
        
        // select path
        $depth  =   0;
        if( !empty( $this->_request['path'] ) ) {
            $this->_path   =   explode( '/', $this->_request['path'] );
        }

        $this->_loadTemplates( $this->_params['tmpl'] );
        $html   =   $this->_path2Html( $menu, $depth );
        
        $this->_tmpl->addVar( 'wbModule_TreeMenu', 'menu', $html );
        return $this->_tmpl->getParsedTemplate( 'wbModule_TreeMenu' );
    }

   /**
    * build html from path and menu items
    * 
    * Walk through menu and select items by path. 
    * This function is recursive
    * 
    * @access private
    * @param array $menu
    * @param int $depth
    * @return string $html
    */
    function _path2Html( $menu, $depth ) {
        $items  =   array();
        
        $page   =   null;
        if( !empty( $this->_path ) && isset( $this->_path[$depth] ) ) {
            $page   =   $this->_path[$depth];
        }
        
        for( $i = 0; $i < count( $menu ); ++$i ) {
            $level  =   array();
            $level['depth'] =   $depth;
            $level['page']  =   $menu[$i]['page'];
            $level['state'] =   'item';
            if( $page == $level['page'] ) {
                $level['state'] =   'selected';
            }
            
            $level['path']  =   $level['page'];
            if( $depth && isset( $this->_path[$depth - 1 ] ) ) {
                $level['path']  =   array_slice( $this->_path, 0, $depth );
                array_push( $level['path'], $level['page'] );
                $level['path']  =   implode( '/', $level['path'] );
            }
            
            $level['title'] =   _( $menu[$i]['title'] );
            $level['brief'] =  _( $menu[$i]['brief'] );
            
            array_push( $items, $level );

            // add submenu
            if( $page == $level['page'] && isset( $menu[$i]['menu'] ) ) {
                $level  =   array();
                $level['state'] =   'submenu';
                $level['depth'] =   $depth;
                
                $level['submenu'] =   $this->_path2Html( $menu[$i]['menu'], ( $depth + 1 ) );
                array_push( $items, $level );
            }
        }
        
        $this-> _tmpl->addRows( 'wbModule_TreeMenu_level_' . $depth, $items );
        $html   =   $this->_tmpl->getParsedTemplate( 'wbModule_TreeMenu_level_' . $depth );
        
        return $html;
    } 
}
?>