class.ilTaxMDGUI.php

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<?php
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilTaxMDGUI
{
        protected $md_rbac_id; // [int]
        protected $md_obj_id; // [int]
        protected $md_obj_type; // [string]
        
        public function __construct($a_md_rbac_id, $a_md_obj_id, $a_md_obj_type)
        {
                $this->md_rbac_id = $a_md_rbac_id;
                $this->md_obj_id = $a_md_obj_id;
                $this->md_obj_type = $a_md_obj_type;                            
        }
        
        protected function getSelectableTaxonomies()
        {
                global $objDefinition, $tree;
                
                if($objDefinition->isRBACObject($this->md_obj_type))
                {
                        $res = array();
                        
                        // see ilTaxonomyBlockGUI::getActiveTaxonomies()
                                                
                        // get all active taxonomies of parent objects
                        foreach($tree->getPathFull((int)$_REQUEST["ref_id"]) as $node)
                        {                               
                                // currently only active for categories
                                if($node["type"] == "cat")
                                {
                                        include_once "Services/Object/classes/class.ilObjectServiceSettingsGUI.php";
                                        include_once "Services/Container/classes/class.ilContainer.php";
                                        if(ilContainer::_lookupContainerSetting(
                                                $node["obj_id"],
                                                ilObjectServiceSettingsGUI::TAXONOMIES,
                                                false
                                                ))
                                        {
                                                include_once "Services/Taxonomy/classes/class.ilObjTaxonomy.php";
                                                $tax_ids = ilObjTaxonomy::getUsageOfObject($node["obj_id"]);                                    
                                                if(sizeof($tax_ids))
                                                {
                                                        $res = array_merge($res, $tax_ids);
                                                }
                                        }
                                }
                        }               
                        
                        if(sizeof($res))
                        {
                                return $res;
                        }
                }
        }
        
        protected function initTaxNodeAssignment($a_tax_id)
        {
                include_once("./Services/Taxonomy/classes/class.ilTaxNodeAssignment.php");
                return new ilTaxNodeAssignment($this->md_obj_type, $this->md_obj_id, "obj", $a_tax_id);                 
        }
        
        public function addToMDForm(ilPropertyFormGUI $a_form)
        {               
                $tax_ids = $this->getSelectableTaxonomies();
                if(is_array($tax_ids))
                {
                        include_once "Services/Taxonomy/classes/class.ilTaxSelectInputGUI.php";                                                         
                        foreach($tax_ids as $tax_id)
                        {                                                                                                               
                                // get existing assignments
                                $node_ids = array();                            
                                $ta = $this->initTaxNodeAssignment($tax_id);                                                    
                                foreach($ta->getAssignmentsOfItem($this->md_obj_id) as $ass)
                                {
                                        $node_ids[] = $ass["node_id"];
                                }
                                
                                $tax_sel = new ilTaxSelectInputGUI($tax_id, "md_tax_".$tax_id, true);
                                $tax_sel->setValue($node_ids);
                                $a_form->addItem($tax_sel);                             
                        }
                }               
        }
        
        public function updateFromMDForm()
        {
                $tax_ids = $this->getSelectableTaxonomies();
                if(is_array($tax_ids))
                {
                        include_once("./Services/Taxonomy/classes/class.ilTaxNodeAssignment.php");
                        
                        foreach($tax_ids as $tax_id)
                        {                               
                                $ta = $this->initTaxNodeAssignment($tax_id);    
                                
                                // delete existing assignments
                                $ta->deleteAssignmentsOfItem($this->md_obj_id);
                                                        
                                // set current assignment
                                if(is_array($_POST["md_tax_".$tax_id]))
                                {
                                        foreach($_POST["md_tax_".$tax_id] as $node_id)
                                        {
                                                $ta->addAssignment($node_id, $this->md_obj_id);
                                        }
                                }
                        }
                }                               
        }       
}