class.ilPCResources.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once("./Services/COPage/classes/class.ilPageContent.php");

class ilPCResources extends ilPageContent
{
    public $dom;
    public $res_node;

    public function init()
    {
        $this->setType("repobj");
    }

    public function setNode($a_node)
    {
        parent::setNode($a_node);               // this is the PageContent node
        $this->res_node = $a_node->first_child();               // this is the Resources node
    }

    public function create(&$a_pg_obj, $a_hier_id, $a_pc_id = "")
    {
        $this->node = $this->createPageContentNode();
        $a_pg_obj->insertContent($this, $a_hier_id, IL_INSERT_AFTER, $a_pc_id);
        $this->res_node = $this->dom->create_element("Resources");
        $this->res_node = $this->node->append_child($this->res_node);
    }

    public function setResourceListType($a_type)
    {
        if (!empty($a_type)) {
            $children = $this->res_node->child_nodes();
            for ($i=0; $i<count($children); $i++) {
                $this->res_node->remove_child($children[$i]);
            }
            $list_node = $this->dom->create_element("ResourceList");
            $list_node = $this->res_node->append_child($list_node);
            $list_node->set_attribute("Type", $a_type);
        }
    }

    public function setItemGroupRefId($a_ref_id)
    {
        if (!empty($a_ref_id)) {
            $children = $this->res_node->child_nodes();
            for ($i=0; $i<count($children); $i++) {
                $this->res_node->remove_child($children[$i]);
            }
            $list_node = $this->dom->create_element("ItemGroup");
            $list_node = $this->res_node->append_child($list_node);
            $list_node->set_attribute("RefId", $a_ref_id);
        }
    }

    public function getResourceListType()
    {
        if (is_object($this->res_node)) {
            $children = $this->res_node->child_nodes();
            if (is_object($children[0]) && $children[0]->node_name() == "ResourceList") {
                return $children[0]->get_attribute("Type");
            }
        }
        return false;
    }
    
    public function getItemGroupRefId()
    {
        if (is_object($this->res_node)) {
            $children = $this->res_node->child_nodes();
            if (is_object($children[0]) && $children[0]->node_name() == "ItemGroup") {
                return (int) $children[0]->get_attribute("RefId");
            }
        }
        return false;
    }

    public function getMainType()
    {
        if (is_object($this->res_node)) {
            $children = $this->res_node->child_nodes();
            if (is_object($children[0])) {
                return $children[0]->node_name();
            }
        }
        return false;
    }

    public static function modifyItemGroupRefIdsByMapping($a_page, $mappings)
    {
        $dom = $a_page->getDom();
        
        if ($dom instanceof php4DOMDocument) {
            $dom = $dom->myDOMDocument;
        }
 
        $xpath_temp = new DOMXPath($dom);
        $igs = $xpath_temp->query("//Resources/ItemGroup");

        $updated = false;
        foreach ($igs as $ig_node) {
            $ref_id = $ig_node->getAttribute("RefId");
            if ($mappings[$ref_id] > 0) {
                $ig_node->setAttribute("RefId", $mappings[$ref_id]);
                $updated = true;
            }
        }
        return $updated;
    }
    
    public static function getLangVars()
    {
        return array("pc_res");
    }

    public static function resolveResources(ilPageObject $page, $ref_mappings)
    {
        return self::modifyItemGroupRefIdsByMapping($page, $ref_mappings);
    }
}