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
{
    public function __construct(
        $a_taxonomy_id,
        $a_multi = true,
        $a_title = "",
        $a_postvar = "",
        $a_include_please_select = true
    ) {
        global $DIC;

        $this->lng = $DIC->language();
        $lng = $DIC->language();
        
        $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);
    }
    
    public function setTaxonomyId($a_val)
    {
        $this->taxononmy_id = $a_val;
    }
    
    public function getTaxonomyId()
    {
        return $this->taxononmy_id;
    }

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

    public function getOptions()
    {
        $lng = $this->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;
    }
    
    public 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);
            }
        }
    }
    
    public 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]);
        }
    }
}