class.ilTaxAssignInputGUI.php

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<?php

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

include_once("./Services/Form/classes/class.ilSelectInputGUI.php");
include_once("./Services/Taxonomy/exceptions/class.ilTaxonomyException.php");

class ilTaxAssignInputGUI extends ilSelectInputGUI
{
        function __construct($a_taxonomy_id, $a_multi = true, $a_title = "", $a_postvar = "",
                $a_include_please_select = true)
        {
                global $lng;
                
                $lng->loadLanguageModule("tax");
                $this->setMulti($a_multi);
                $this->include_please_select = $a_include_please_select;
                
                if ($a_title == "")
                {
                        $a_title = $lng->txt("tax_taxonomy");
                }
                
                if ($a_postvar == "")
                {
                        $a_postvar = "tax_node_assign";
                }
                
                parent::__construct($a_title, $a_postvar);
                $this->setType("tax_assign");
                
                if ((int) $a_taxonomy_id == 0)
                {
                        throw new ilTaxonomyExceptions("No taxonomy ID passed to ilTaxAssignInputGUI.");
                }
                
                $this->setTaxonomyId((int) $a_taxonomy_id);
        }
        
        function setTaxonomyId($a_val)
        {
                $this->taxononmy_id = $a_val;
        }
        
        function getTaxonomyId()
        {
                return $this->taxononmy_id;
        }

        function setOptions($a_options)
        {
                throw new ilTaxonomyExceptions("setOptions: Not supported for ilTaxAssignInputGUI.");
        }

        function getOptions()
        {
                global $lng;
                
                if ($this->include_please_select)
                {
                        $options = array("" => $lng->txt("please_select"));
                }
                
                include_once("./Services/Taxonomy/classes/class.ilTaxonomyTree.php");
                $tax_tree = new ilTaxonomyTree($this->getTaxonomyId());
                
                $nodes = $tax_tree->getSubtree($tax_tree->getNodeData($tax_tree->readRootId()));
                foreach ($nodes as $n)
                {
                        if ($n["type"] == "taxn")
                        {
                                $options[$n["child"]] = str_repeat("&nbsp;", ($n["depth"] - 2) * 2).$n["title"];
                        }
                }
                
                return $options;
        }
        
        function saveInput($a_component_id, $a_obj_id, $a_item_type, $a_item_id)
        {
                include_once("./Services/Taxonomy/classes/class.ilTaxNodeAssignment.php");
                $tax_node_ass = new ilTaxNodeAssignment($a_component_id, $a_obj_id, $a_item_type, $this->getTaxonomyId());
                //$tax_node_ass->deleteAssignmentsOfItem($a_item_id);

                $post = $_POST[$this->getPostVar()];
                if (!$this->getMulti())
                {
                        $post = array($post);
                }
                elseif( !is_array($post) )
                {
                        // BH: when multi values are ENABLED and $form->checkInput is NOT called
                        // there is no post parameter available WHEN the selection is left empty
                        // - fixed mantis #22186 - the followup issue
                        $post = array();
                }

                $current_ass = $tax_node_ass->getAssignmentsOfItem($a_item_id);
                $exising = array();
                foreach ($current_ass as $ca)
                {
                        if (!in_array($ca["node_id"], $post))
                        {
                                $tax_node_ass->deleteAssignment($ca["node_id"], $a_item_id);
                        }
                        else
                        {
                                $exising[] = $ca["node_id"];
                        }
                }

                foreach ($post as $p)
                {
                        if (!in_array($p, $exising))
                        {
                                $tax_node_ass->addAssignment(ilUtil::stripSlashes($p), $a_item_id);
                        }
                }
        }
        
        function setCurrentValues($a_component_id, $a_obj_id, $a_item_type, $a_item_id)
        {
                include_once("./Services/Taxonomy/classes/class.ilTaxNodeAssignment.php");
                $tax_node_ass = new ilTaxNodeAssignment($a_component_id, $a_obj_id, $a_item_type, $this->getTaxonomyId());
                $ass = $tax_node_ass->getAssignmentsOfItem($a_item_id);
                
                $nodes = array();
                foreach ($ass as $a)
                {
                        $nodes[] = $a["node_id"];
                }
                if ($this->getMulti())
                {
                        $this->setValue($nodes);
                }
                else
                {
                        $this->setValue($nodes[0]);
                }
        }

}