class.ilPCContentInclude.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 ilPCContentInclude extends ilPageContent
{
        var $dom;
        var $incl_node;

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

        function setNode(&$a_node)
        {
                parent::setNode($a_node);               // this is the PageContent node
                $this->incl_node =& $a_node->first_child();             // this is the snippet node
        }

        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->incl_node =& $this->dom->create_element("ContentInclude");
                $this->incl_node =& $this->node->append_child($this->incl_node);
        }

        function setContentId($a_id)
        {
                $this->setContentIncludeAttribute("ContentId", $a_id);
        }
        
        function getContentId()
        {
                return $this->getContentIncludeAttribute("ContentId");
        }

        function setContentType($a_type)
        {
                $this->setContentIncludeAttribute("ContentType", $a_type);
        }
        
        function getContentType()
        {
                return $this->getContentIncludeAttribute("ContentType");
        }

        function setInstId($a_id)
        {
                $this->setContentIncludeAttribute("InstId", $a_id);
        }

        function getInstId()
        {
                return $this->getContentIncludeAttribute("InstId");
        }
        
        protected function setContentIncludeAttribute($a_attr, $a_value)
        {
                if (!empty($a_value))
                {
                        $this->incl_node->set_attribute($a_attr, $a_value);
                }
                else
                {
                        if ($this->incl_node->has_attribute($a_attr))
                        {
                                $this->incl_node->remove_attribute($a_attr);
                        }
                }
        }

        function getContentIncludeAttribute($a_attr)
        {
                if (is_object($this->incl_node))
                {
                        return  $this->incl_node->get_attribute($a_attr);
                }
        }

        static function afterPageUpdate($a_page, DOMDocument $a_domdoc, $a_xml, $a_creation)
        {
                // pc content include
                self::saveContentIncludeUsage($a_page, $a_domdoc);
        }
        
        static function beforePageDelete($a_page)
        {
                include_once("./Services/COPage/classes/class.ilPageContentUsage.php");
                ilPageContentUsage::deleteAllUsages("incl", $a_page->getParentType().":pg", $a_page->getId(), false, $a_page->getLanguage());
        }

        static function afterPageHistoryEntry($a_page, DOMDocument $a_old_domdoc, $a_old_xml, $a_old_nr)
        {
                self::saveContentIncludeUsage($a_page, $a_old_domdoc, $a_old_nr);
        }

        static function saveContentIncludeUsage($a_page, $a_domdoc, $a_old_nr = 0)
        {
                include_once("./Services/COPage/classes/class.ilPageContentUsage.php");
                $ci_ids = self::collectContentIncludes($a_page, $a_domdoc);
                ilPageContentUsage::deleteAllUsages("incl", $a_page->getParentType().":pg", $a_page->getId(), $a_old_nr, $a_page->getLanguage());
                foreach($ci_ids as $ci_id)
                {
                        if ((int) $ci_id["inst_id"] <= 0 || $ci_id["inst_id"] == IL_INST_ID)
                        {
                                ilPageContentUsage::saveUsage("incl", $ci_id["id"], $a_page->getParentType().":pg", $a_page->getId(), $a_old_nr,
                                        $a_page->getLanguage());
                        }
                }
        }

        static function collectContentIncludes($a_page, $a_domdoc)
        {
                $xpath = new DOMXPath($a_domdoc);
                $nodes = $xpath->query('//ContentInclude');     

                $ci_ids = array();
                foreach ($nodes as $node)
                {
                        $type = $node->getAttribute("ContentType");
                        $id = $node->getAttribute("ContentId");
                        $inst_id = $node->getAttribute("InstId");
                        $ci_ids[$type.":".$id.":".$inst_id] = array(
                                "type" => $type, "id" => $id, "inst_id" => $inst_id);
                }

                return $ci_ids;
        }

}

?>