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Filename : GKHandheld.php
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<?php

/**
 *
 * Handheld menu class
 *
 * based on T3 Framework menu class
 *
 * @version             1.0.0
 * @package             Gavern Framework
 * @copyright			Copyright (C) 2010 - 2011 GavickPro. All rights reserved.
 *               
 */
 
// No direct access.
defined('_JEXEC') or die;

jimport( 'joomla.html.parameter' );

if (!defined('_GK_HANDHELD_MENU_CLASS')) {
    define('_GK_HANDHELD_MENU_CLASS', 1);

    class GKHandheld extends JObject {
        var $_params = null;
        var $children = null;
        var $open = null;
        var $items = null;
        var $Itemid = 0;
        var $_tmpl = null;

        function __construct(&$params) {
            $acl = JFactory::getACL();
            $app = JFactory::getApplication();
            $menu = $app->getMenu();
            $active = $menu->getActive();
            $active_id = isset($active) ? $active->id : $menu->getDefault()->id;      
            $this->_params = $params;
            $this->Itemid = $active_id;  
        }

        function getParam($paramName, $default = null) {
            $val = $this->_params->get($paramName, null);
            return (!$val) ? $default : $val;
        }

        function loadMenu($menuname = 'mainmenu') {
            $list = array();
            $db = JFactory::getDbo();
            $acl =JFactory::getACL();
            $user = JFactory::getUser();
            $app = JFactory::getApplication();
            $menu = $app->getMenu();
            $aid = $user->get('aid');
            //find active element or set default
            $active = ($menu->getActive()) ? $menu->getActive() : $menu->getDefault();
            $this->open = $active->tree;
            $this->open = $this->open[count($this->open) - 1];
            $rows = $menu->getItems('menutype', $menuname);             
            if (!count($rows)) return;
            $children = array();
            $this->items = array();

            foreach ($rows as $index => $v) {
                if (isset($v->title)) $v->name = $v->title;
                if (isset($v->parent_id)) $v->parent = $v->parent_id;

                $v->name = str_replace('&', '&amp;', str_replace('&amp', '&', $v->name));
                if ($v->access >= $aid) {
                    $ptr = $v->parent;
                    $list = @$children[$ptr] ? $children[$ptr] : array();	
                    // friendly links
                    $v->flink = $v->link;

                    switch ($v->type) {
                        case 'separator':
                            continue;
                        case 'url':
                            if ((strpos($v->link, 'index.php?') === 0) && (strpos($v->link, 'Itemid=') === false)) {
                                $v->flink = $v->link . '&Itemid=' . $v->id;
                            }
                            break;
                        case 'alias':
                            $v->flink = 'index.php?Itemid=' . $v->params->get('aliasoptions');
                            break;
                        default:
                            $router = JApplication::getRouter();;
                            if ($router->getMode() == JROUTER_MODE_SEF) {
                                $v->flink = 'index.php?Itemid=' . $v->id;
                            } else {
                                $v->flink .= '&Itemid=' . $v->id;
                            }
                            break;
                    }
                    $v->url = $v->flink = JRoute::_($v->flink);

                    if ($v->home == 1) {
                        $v->url = JURI::base();
                    }

                    $v->_idx = count($list);
                    array_push($list, $v);
                    $children[$ptr] = $list;
                    $this->items[$v->id] = $v;
                }
            }

            $this->children = $children;
        }

        function remove_item($item) {
            $result = array();
            foreach ($this->children[$item->parent] as $o) {
                if ($o->id != $item->id) $result[] = $o;
            }
            $this->children[$item->parent] = $result;
        }

        function genMenuItem($item, $level = 0, $ret = 0) {
            $data = '';
            $tmp = $item;
            $tmpname = $tmp->name;
            
            if(!isset($tmp->content) || (isset($tmp->content) && stripos($tmp->content, '<jdoc') === FALSE)) {
                $txt = $tmpname;
                $txt_margin = '';
                for($i = 0; $i < $level; $i++) {
                    $txt_margin .= '&mdash;';
                }

                if($level > 0) {
                    $txt = ' ' . $txt;
                }

                $txt = $txt_margin . $txt;

                if ($tmp->type == 'menulink') {
                    $menu = &JSite::getMenu();
                    $alias_item = clone ($menu->getItem($tmp->query['Itemid']));
                    if (!$alias_item) return false;
                    else $tmp->url = $alias_item->link;
                }

                if ($tmpname) {
                    if ($tmp->type == 'separator') {
                        $data = ' value="#">' . $txt;
                    } else {
                        if ($tmp->url != null) {
                            $data = ' value="'. $tmp->url . '">' . $txt;
                        } else {
                            $data = ' value="#">' . $txt;
                        }
                    }
                }

                if ($this->getParam('gkmenu')) {
                    if (isset($item->content) && $item->content) {
                        $data .= $item->content;
                    }
                }

                $data .= "</option>";

                if ($ret) return $data;
                else echo $data;
            } else {
                if ($ret) return $data;
                else echo $data;
            }
        }
        
        function setParam($paramName, $paramValue) {
            return $this->_params->set($paramName, $paramValue);
        }

        function beginMenuItem($mitem = null, $level = 0) {
            if(!isset($mitem->content) || (isset($mitem->content) && stripos($mitem->content, '<jdoc') === FALSE)) {
                echo "<option ";
                if($mitem->id == $this->open) echo 'selected="selected" ';
            }
        }
        
        function endMenuItem($mitem = null, $level = 0) {
        }
        
        function genMenu($startlevel = 0, $endlevel = -1) {
            $this->setParam('startlevel', $startlevel);
            $this->setParam('endlevel', $endlevel == -1 ? 10 : $endlevel);

            if ($this->getParam('startlevel') == 0) {
                //First level
                $this->genMenuItems(1, 0);
            } else {
                //Sub level
                $pid = $this->getParentId($this->getParam('startlevel'));
                if ($pid) $this->genMenuItems($pid, $this->getParam('startlevel'));
            }
        }
        
        function genMenuItems($pid, $level) {
            if (@$this->children[$pid]) {
                $j = 0;
                $cols = 1;
                $total = count($this->children[$pid]);
                $tmp = $pid && isset($this->items[$pid]) ? $this->items[$pid] : new stdclass();
                $tmp->col = array($total);

                for ($col = 0; $col < $cols && $j < $total; $col++) {
                    $i = 0;
                    while ($i < $tmp->col[$col] && $j < $total) {
                        $row = $this->children[$pid][$j];
                        $this->beginMenuItem($row, $level);
                        $this->genMenuItem($row, $level);
                        if ($level < $this->getParam('endlevel')) {
                        	$this->genMenuItems($row->id, $level + 1);
                        }
                        $this->endMenuItem($row, $level);
                        $j++;
                        $i++;
                    }
                }
            }
        }

        function getParentId($level) {
            if (!$level || (count($this->open) < $level)) return 1;
            return $this->open[count($this->open) - $level];
        }
    }
}

// EOF