class.ilPageEditorGUI.php

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

include_once("./Services/COPage/classes/class.ilPageObjectGUI.php");

class ilPageEditorGUI
{
    protected $tabs_gui;

    protected $help;

    protected $user;

    protected $access;

    public $tpl;
    public $lng;
    public $ctrl;
    public $objDefinition;
    public $page;
    public $target_script;
    public $return_location;
    public $header;
    public $tabs;
    public $cont_obj;
    public $enable_keywords;
    public $enable_anchors;

    protected $log;

    protected $ui;

    protected $request;

    protected $tool_context;

    public function __construct(&$a_page_object, &$a_page_object_gui)
    {
        global $DIC;

        $this->help = $DIC["ilHelp"];
        $this->user = $DIC->user();
        $this->access = $DIC->access();
        $tpl = $DIC["tpl"];
        $lng = $DIC->language();
        $objDefinition = $DIC["objDefinition"];
        $ilCtrl = $DIC->ctrl();
        $ilTabs = $DIC->tabs();

        $this->ui = $DIC->ui();
        $this->request = $DIC->http()->request();

        $this->log = ilLoggerFactory::getLogger('copg');

        $this->tool_context = $DIC->globalScreen()->tool()->context();

        // initiate variables
        $this->ctrl = $ilCtrl;
        $this->tpl = $tpl;
        $this->lng = $lng;
        $this->objDefinition = $objDefinition;
        $this->tabs_gui = $ilTabs;
        $this->page = $a_page_object;
        $this->page_gui = $a_page_object_gui;

        $this->ctrl->saveParameter($this, array("hier_id", "pc_id"));
    }


    public function setHeader($a_header)
    {
        $this->header = $a_header;
    }

    public function getHeader()
    {
        return $this->header;
    }

    public function setLocator(&$a_locator)
    {
        $this->locator = $a_locator;
    }

    public function returnToContext()
    {
        $this->ctrl->returnToParent($this);
    }

    public function setIntLinkReturn($a_return)
    {
        $this->int_link_return = $a_return;
    }

    
    public function setPageBackTitle($a_title)
    {
        $this->page_back_title = $a_title;
    }

    public function executeCommand()
    {
        $ilCtrl = $this->ctrl;
        $ilHelp = $this->help;
        $this->log->debug("begin =========================");

        if (!true) {
            var_dump($_GET);
            echo "<br><br>";
            var_dump($_POST);
            exit;
        }

        // Step BC (basic command determination)
        // determine cmd, cmdClass, hier_id and pc_id
        $cmd = $this->ctrl->getCmd("displayPage");
        $cmdClass = strtolower($this->ctrl->getCmdClass());

        $hier_id = $_GET["hier_id"];
        $pc_id = $_GET["pc_id"];
        if (isset($_POST["new_hier_id"])) {
            $hier_id = $_POST["new_hier_id"];
        }

        $new_type = (isset($_GET["new_type"]))
            ? $_GET["new_type"]
            : $_POST["new_type"];

        $this->log->debug("step BC: cmd:$cmd, cmdClass:$cmdClass, hier_id: $hier_id, pc_id: $pc_id");

        // Step EC (exec_ command handling)
        // handle special exec_ commands, modify pc, hier_id
        if (substr($cmd, 0, 5) == "exec_") {
            // check whether pc id is given
            $pca = explode(":", key($_POST["cmd"]));
            $pc_id = $pca[1];
            $cmd = explode("_", $pca[0]);
            unset($cmd[0]);
            $hier_id = implode("_", $cmd);
            $cmd = $_POST["command" . $hier_id];
        }
        $this->log->debug("step EC: cmd:$cmd, hier_id: $hier_id, pc_id: $pc_id");

        // Step CC (handle table container (and similar) commands
        // ... strip "c" "r" of table ids from hierarchical id
        $first_hier_character = substr($hier_id, 0, 1);
        if ($first_hier_character == "c" ||
            $first_hier_character == "r" ||
            $first_hier_character == "g" ||
            $first_hier_character == "i") {
            $hier_id = substr($hier_id, 1);
        }
        $this->log->debug("step CC: cmd:$cmd, hier_id: $hier_id, pc_id: $pc_id");

        // Step B (build dom, and ids in XML)
        $this->page->buildDom();
        $this->page->addHierIDs();


        // Step CS (strip base command)
        if ($cmdClass != "ilfilesystemgui") {
            $com = explode("_", $cmd);
            $cmd = $com[0];
        }
        $this->log->debug("step CS: cmd:$cmd");


        // Step NC (determine next class)
        $next_class = $this->ctrl->getNextClass($this);
        $this->log->debug("step NC: next class: " . $next_class);


        // Step PH (placeholder handling, placeholders from preview mode come without hier_id)
        if ($next_class == "ilpcplaceholdergui" && $hier_id == "" && $_GET["pl_pc_id"] != "") {
            $hid = $this->page->getHierIdsForPCIds(array($_GET["pl_pc_id"]));
            $hier_id = $hid[$_GET["pl_pc_id"]];
        }
        $this->log->debug("step PH: next class: " . $next_class);

        if ($com[0] == "insert" || $com[0] == "create") {
            // Step CM (creation mode handling)
            $cmd = $com[0];
            $ctype = $com[1];                           // note ctype holds type if cmdclass is empty, but also subcommands if not (e.g. applyFilter in ilpcmediaobjectgui)
            $add_type = $_POST["pluginName"];
            if ($ctype == "mob") {
                $ctype = "media";
            }

            $this->log->debug("step CM: cmd: " . $cmd . ", ctype: " . $ctype . ", add_type: " . $add_type);
        } else {
            // Step LM (setting cmd and cmdclass for editing of linked media)
            if ($cmd == "editLinkedMedia") {
                $this->ctrl->setCmd("edit");
                $cmd = "edit";
                $_GET["pgEdMediaMode"] = "editLinkedMedia";
                $_GET["mob_id"] = $_POST["mob_id"];
            }
            if ($_GET["pgEdMediaMode"] == "editLinkedMedia") {
                $this->ctrl->setParameter($this, "pgEdMediaMode", "editLinkedMedia");
                $this->ctrl->setParameter($this, "mob_id", $_GET["mob_id"]);
                if ($cmdClass != "ilinternallinkgui" && $cmdClass != "ilmdeditorgui"
                    && $cmdClass != "ilimagemapeditorgui" && $cmdClass != "ilfilesystemgui") {
                    $this->ctrl->setCmdClass("ilobjmediaobjectgui");
                    $cmdClass = "ilobjmediaobjectgui";
                }
            }
            $this->log->debug("step LM: cmd: " . $cmd . ", cmdClass: " . $cmdClass);


            // Step PR (get content object and return to parent)
            $this->log->debug("before PR: cmdClass: $cmdClass, nextClass: $next_class" .
                ", hier_id: " . $hier_id . ", pc_id: " . $pc_id . ")");
            // note: ilinternallinkgui for page: no cont_obj is received
            // ilinternallinkgui for mob: cont_obj is received
            if ($_REQUEST["ctype"] == "" && $_REQUEST["cname"] == "" &&
                $cmd != "insertFromClipboard" && $cmd != "pasteFromClipboard" &&
                $cmd != "setMediaMode" && $cmd != "copyLinkedMediaToClipboard" &&
                $cmd != "activatePage" && $cmd != "deactivatePage" &&
                $cmd != "copyLinkedMediaToMediaPool" && $cmd != "showSnippetInfo" &&
                $cmd != "delete" && $cmd != "paste" &&
                $cmd != "cancelDeleteSelected" && $cmd != "confirmedDeleteSelected" &&
                $cmd != "copy" && $cmd != "cut" &&
                ($cmd != "displayPage" || $_POST["editImagemapForward_x"] != "" || $_POST["imagemap_x"] != "") &&
                ($cmd != "displayPage" || $_POST["editImagemapForward_x"] != "") &&
                $cmd != "activate" && $cmd != "characteristic" &&
                $cmd != "assignCharacteristic" &&
                $cmdClass != "ilrepositoryselector2inputgui" &&
                $cmdClass != "ilpageeditorserveradaptergui" &&
                $cmd != "cancelCreate" && $cmd != "popup" &&
                $cmdClass != "ileditclipboardgui" && $cmd != "addChangeComment" &&
                ($cmdClass != "ilinternallinkgui" || ($next_class == "ilpcmediaobjectgui"))) {
                if ($_GET["pgEdMediaMode"] != "editLinkedMedia") {
                    $cont_obj = $this->page->getContentObject($hier_id, $pc_id);
                    if (!is_object($cont_obj)) {
                        $this->log->debug("returnToParent");
                        $ilCtrl->returnToParent($this);
                    }
                    $ctype = $cont_obj->getType();
                }
            }
            $this->log->debug("step PR: ctype: $ctype");
        }

        // Step NC (handle empty next class)
        if ($_REQUEST["ctype"] != "" || $_REQUEST["cname"] != "") {
            $ctype = $_REQUEST["ctype"];
            if ($_REQUEST["cname"] != "") {
                $pc_def = ilCOPagePCDef::getPCDefinitionByName($_REQUEST["cname"]);
                $ctype = $pc_def["pc_type"];
            }
            $pc_id = $_REQUEST["pcid"];
            $hier_id = $_REQUEST["hier_id"];
            if (!in_array($cmd, ["insert", "create"])) {
                $cont_obj = $this->page->getContentObject($hier_id, $pc_id);
            }
        }
        // this fixes e.g. #31214
        if ($pc_id != "" && $hier_id == "") {
            $hier_id = $this->page->getHierIdForPcId($pc_id);
        }
        if ($ctype != "media" || !is_object($cont_obj)) {
            if ($this->getHeader() != "") {
                $this->tpl->setTitle($this->getHeader());
            }
            $this->displayLocator();
        }

        $this->cont_obj = $cont_obj;


        $this->ctrl->setParameter($this, "hier_id", $hier_id);
        $this->ctrl->setParameter($this, "pc_id", $pc_id);
        $this->ctrl->setCmd($cmd);
        if ($next_class == "") {
            include_once("./Services/COPage/classes/class.ilCOPagePCDef.php");
            $pc_def = ilCOPagePCDef::getPCDefinitionByType($ctype);
            if (is_array($pc_def)) {
                $this->ctrl->setCmdClass($pc_def["pc_gui_class"]);
            }
            $next_class = $this->ctrl->getNextClass($this);
        }
        $this->log->debug("step NC2: next_class: $next_class");

        // ... do not do this while imagemap editing is ongoing
        // Step IM (handle image map editing)
        if ($cmd == "displayPage" && $_POST["editImagemapForward_x"] == "" && $_POST["imagemap_x"] == "") {
            $next_class = "";
        }
        $this->log->debug("step IM: next_class: $next_class");
        // Step FC (forward command)
        $this->log->debug("before FC: next_class:" . $next_class . ", pc_id:" . $pc_id .
                ", hier_id:" . $hier_id . ", ctype:" . $ctype . ", cmd:" . $cmd . ", _GET[cmd]: " . $_GET["cmd"]);


        switch ($next_class) {
            case "ilinternallinkgui":
                $link_gui = new ilInternalLinkGUI(
                    $this->page_gui->getPageConfig()->getIntLinkHelpDefaultType(),
                    $this->page_gui->getPageConfig()->getIntLinkHelpDefaultId(),
                    $this->page_gui->getPageConfig()->getIntLinkHelpDefaultIdIsRef()
                );
                $link_gui->setFilterWhiteList(
                    $this->page_gui->getPageConfig()->getIntLinkFilterWhiteList()
                );
                foreach ($this->page_gui->getPageConfig()->getIntLinkFilters() as $filter) {
                    $link_gui->filterLinkType($filter);
                }
                $link_gui->setReturn($this->int_link_return);

                $ret = $this->ctrl->forwardCommand($link_gui);
                break;

            // PC Media Object
            case "ilpcmediaobjectgui":
                include_once("./Services/COPage/classes/class.ilPCMediaObjectGUI.php");

                $this->tabs_gui->clearTargets();
                $this->tabs_gui->setBackTarget(
                    $this->page_gui->page_back_title,
                    $ilCtrl->getLinkTarget($this->page_gui, "edit")
                );
                $pcmob_gui = new ilPCMediaObjectGUI($this->page, $cont_obj, $hier_id, $pc_id);
                $pcmob_gui->setStyleId($this->page_gui->getStyleId());
                $pcmob_gui->setSubCmd($ctype);
                $pcmob_gui->setEnabledMapAreas($this->page_gui->getPageConfig()->getEnableInternalLinks());
                $ret = $this->ctrl->forwardCommand($pcmob_gui);
                $ilHelp->setScreenIdComponent("copg_media");
                break;

            // only for "linked" media
            case "ilobjmediaobjectgui":
                $this->tabs_gui->clearTargets();
                $this->tabs_gui->setBackTarget(
                    $this->lng->txt("back"),
                    $ilCtrl->getParentReturn($this)
                );
                $mob_gui = new ilObjMediaObjectGUI("", $_GET["mob_id"], false, false);
                $mob_gui->getTabs();
                $mob_gui->setEnabledMapAreas($this->page_gui->getPageConfig()->getEnableInternalLinks());
                $this->tpl->setTitle($this->lng->txt("mob") . ": " .
                    ilObject::_lookupTitle($_GET["mob_id"]));
                $ret = $this->ctrl->forwardCommand($mob_gui);
                break;

            // Question
            case "ilpcquestiongui":
                include_once("./Services/COPage/classes/class.ilPCQuestionGUI.php");
                $pc_question_gui = new ilPCQuestionGUI($this->page, $cont_obj, $hier_id, $pc_id);
                $pc_question_gui->setSelfAssessmentMode($this->page_gui->getPageConfig()->getEnableSelfAssessment());
                $pc_question_gui->setPageConfig($this->page_gui->getPageConfig());

                if ($this->page_gui->getPageConfig()->getEnableSelfAssessment()) {
                    $this->tabs_gui->clearTargets();
                    $ilHelp->setScreenIdComponent("copg_pcqst");
                    $this->tabs_gui->setBackTarget(
                        $this->lng->txt("back"),
                        $ilCtrl->getParentReturn($this)
                    );
                    $ret = $this->ctrl->forwardCommand($pc_question_gui);
                } else {
                    $cmd = $this->ctrl->getCmd();
                    $pc_question_gui->$cmd();
                    $this->ctrl->redirectByClass(array("ilobjquestionpoolgui", get_class($cont_obj)), "editQuestion");
                }
                break;
                    
            // Plugged Component
            case "ilpcpluggedgui":
                $this->tabs_gui->clearTargets();
                include_once("./Services/COPage/classes/class.ilPCPluggedGUI.php");
                $plugged_gui = new ilPCPluggedGUI(
                    $this->page,
                    $cont_obj,
                    $hier_id,
                    $add_type,
                    $pc_id
                );
                $ret = $this->ctrl->forwardCommand($plugged_gui);
                break;

            case "ilpageeditorserveradaptergui":
                $adapter = new ilPageEditorServerAdapterGUI(
                    $this->page_gui,
                    $this->ctrl,
                    $this->ui,
                    $this->request
                );
                $this->ctrl->forwardCommand($adapter);
                break;

            default:
                
                // generic calls to gui classes
                include_once("./Services/COPage/classes/class.ilCOPagePCDef.php");
                if (ilCOPagePCDef::isPCGUIClassName($next_class, true)) {
                    $this->log->debug("Generic Call");
                    $pc_def = ilCOPagePCDef::getPCDefinitionByGUIClassName($next_class);
                    $this->tabs_gui->clearTargets();
                    $this->tabs_gui->setBackTarget(
                        $this->page_gui->page_back_title,
                        $ilCtrl->getLinkTarget($this->page_gui, "edit")
                    );
                    $ilHelp->setScreenIdComponent("copg_" . $pc_def["pc_type"]);
                    ilCOPagePCDef::requirePCGUIClassByName($pc_def["name"]);
                    $gui_class_name = $pc_def["pc_gui_class"];
                    $pc_gui = new $gui_class_name($this->page, $cont_obj, $hier_id, $pc_id);
                    if ($pc_def["style_classes"]) {
                        $pc_gui->setStyleId($this->page_gui->getStyleId());
                    }
                    $pc_gui->setPageConfig($this->page_gui->getPageConfig());
                    $ret = $this->ctrl->forwardCommand($pc_gui);
                } else {
                    $this->log->debug("Call ilPageEditorGUI command.");
                    // cmd belongs to ilPageEditorGUI
                    
                    if ($cmd == "pasteFromClipboard") {
                        $ret = $this->pasteFromClipboard($hier_id);
                    } elseif ($cmd == "paste") {
                        $ret = $this->paste($hier_id);
                    } else {
                        $ret = $this->$cmd();
                    }
                }
                break;

        }

        $this->log->debug("end --------------------");

        return $ret;
    }
    
    public static function _doJSEditing()
    {
        global $DIC;

        $ilUser = $DIC->user();

        if ($ilUser->getPref("ilPageEditor_JavaScript") != "disable"
            && ilPageEditorGUI::_isBrowserJSEditCapable()) {
            return true;
        }
        return false;
    }

    public static function _isBrowserJSEditCapable()
    {
        return true;
    }

    public function activatePage()
    {
        $this->page_gui->activatePage();
    }

    public function deactivatePage()
    {
        $this->page_gui->deactivatePage();
    }

    public function setMediaMode()
    {
        $ilUser = $this->user;

        $ilUser->writePref("ilPageEditor_MediaMode", $_POST["media_mode"]);
        $ilUser->writePref("ilPageEditor_HTMLMode", $_POST["html_mode"]);
        if ($ilUser->getPref("ilPageEditor_JavaScript") != $_POST["js_mode"]) {
            // not nice, should be solved differently in the future
            if ($this->page->getParentType() == "lm") {
                $this->ctrl->setParameterByClass("illmpageobjectgui", "reloadTree", "y");
            }
        }
        $ilUser->writePref("ilPageEditor_JavaScript", $_POST["js_mode"]);
        
        // again not so nice...
        if ($this->page->getParentType() == "lm") {
            $this->ctrl->redirectByClass("illmpageobjectgui", "edit");
        } else {
            $this->ctrl->returnToParent($this);
        }
    }
    
    public function copyLinkedMediaToClipboard()
    {
        $ilUser = $this->user;
        
        ilUtil::sendSuccess($this->lng->txt("copied_to_clipboard"), true);
        $ilUser->addObjectToClipboard($_POST["mob_id"], "mob", ilObject::_lookupTitle($_POST["mob_id"]));
        $this->ctrl->returnToParent($this);
    }

    public function copyLinkedMediaToMediaPool()
    {
        $ilUser = $this->user;
        
        $this->ctrl->setParameterByClass("ilmediapooltargetselector", "mob_id", $_POST["mob_id"]);
        $this->ctrl->redirectByClass("ilmediapooltargetselector", "listPools");
    }
    
    public function addChangeComment()
    {
        include_once("./Services/History/classes/class.ilHistory.php");
        ilHistory::_createEntry(
            $this->page->getId(),
            "update",
            "",
            $this->page->getParentType() . ":pg",
            ilUtil::stripSlashes($_POST["change_comment"]),
            true
        );
        ilUtil::sendSuccess($this->lng->txt("cont_added_comment"), true);
        $this->ctrl->returnToParent($this);
    }

    public function delete()
    {
        $ilCtrl = $this->ctrl;
        $tpl = $this->tpl;
        $lng = $this->lng;

        $targets = $_POST["ids"];

        if (count($targets) == 0) {
            ilUtil::sendInfo($lng->txt("no_checkbox"), true);
            $this->ctrl->returnToParent($this);
        } else {
            include_once("./Services/Utilities/classes/class.ilConfirmationGUI.php");
            $cgui = new ilConfirmationGUI();
            $cgui->setFormAction($ilCtrl->getFormAction($this));
            $cgui->setHeaderText($lng->txt("copg_confirm_el_deletion"));
            $cgui->setCancel($lng->txt("cancel"), "cancelDeleteSelected");
            $cgui->setConfirm($lng->txt("confirm"), "confirmedDeleteSelected");
            foreach ($targets as $t) {
                $cgui->addHiddenItem("ids[]", $t);
            }

            $tpl->setContent($cgui->getHTML());
        }
    }

    public function cancelDeleteSelected()
    {
        $this->ctrl->returnToParent($this);
    }


    public function confirmedDeleteSelected()
    {
        $targets = $_POST["ids"];
        if (count($targets) > 0) {
            $updated = $this->page->deleteContents(
                $targets,
                true,
                $this->page_gui->getPageConfig()->getEnableSelfAssessment()
            );
            if ($updated !== true) {
                $_SESSION["il_pg_error"] = $updated;
            } else {
                unset($_SESSION["il_pg_error"]);
            }
        }
        $this->ctrl->returnToParent($this);
    }

    public function copy()
    {
        $lng = $this->lng;
        
        if (is_array($_POST["ids"])) {
            $this->page->copyContents($_POST["ids"]);
            ilUtil::sendSuccess($lng->txt("cont_sel_el_copied_use_paste"), true);
        }
        $this->ctrl->returnToParent($this);
    }

    public function cut()
    {
        $lng = $this->lng;
        
        if (is_array($_POST["ids"])) {
            $updated = $this->page->cutContents($_POST["ids"]);
            if ($updated !== true) {
                $_SESSION["il_pg_error"] = $updated;
            } else {
                unset($_SESSION["il_pg_error"]);
            }
            ilUtil::sendSuccess($lng->txt("cont_sel_el_cut_use_paste"), true);
        }
        $this->ctrl->returnToParent($this);
    }

    public function paste($a_hier_id)
    {
        $ilCtrl = $this->ctrl;
        $this->page->pasteContents($a_hier_id, $this->page_gui->getPageConfig()->getEnableSelfAssessment());
        include_once("./Modules/LearningModule/classes/class.ilEditClipboard.php");
        //ilEditClipboard::setAction("");
        $this->ctrl->returnToParent($this);
    }

    public function activate()
    {
        if (is_array($_POST["ids"])) {
            $updated = $this->page->switchEnableMultiple(
                $_POST["ids"],
                true,
                $this->page_gui->getPageConfig()->getEnableSelfAssessment()
            );
            if ($updated !== true) {
                $_SESSION["il_pg_error"] = $updated;
            } else {
                unset($_SESSION["il_pg_error"]);
            }
        }
        $this->ctrl->returnToParent($this);
    }

    public function characteristic()
    {
        $tpl = $this->tpl;
        $lng = $this->lng;
        
        if (is_array($_POST["ids"])) {
            $types = array();
            
            // check what content element types have been selected
            foreach ($_POST["ids"] as $t) {
                $tarr = explode(":", $t);
                $cont_obj = $this->page->getContentObject($tarr[0], $tarr[1]);
                if (is_object($cont_obj) && $cont_obj->getType() == "par") {
                    $types["par"] = "par";
                }
                if (is_object($cont_obj) && $cont_obj->getType() == "sec") {
                    $types["sec"] = "sec";
                }
            }
        
            if (count($types) == 0) {
                ilUtil::sendFailure($lng->txt("cont_select_par_or_section"), true);
                $this->ctrl->returnToParent($this);
            } else {
                $this->initCharacteristicForm($_POST["ids"], $types);
                $tpl->setContent($this->form->getHTML());
            }
        } else {
            $this->ctrl->returnToParent($this);
        }
    }

    public function initCharacteristicForm($a_target, $a_types)
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        
        
        // edit form
        include_once("./Services/Form/classes/class.ilPropertyFormGUI.php");
        $this->form = new ilPropertyFormGUI();
        $this->form->setTitle($this->lng->txt("cont_choose_characteristic"));
        
        if ($a_types["par"] == "par") {
            $select_prop = new ilSelectInputGUI(
                $this->lng->txt("cont_choose_characteristic_text"),
                "char_par"
            );
            include_once("./Services/COPage/classes/class.ilPCParagraphGUI.php");
            $options = ilPCParagraphGUI::_getCharacteristics($this->page_gui->getStyleId());
            $select_prop->setOptions($options);
            $this->form->addItem($select_prop);
        }
        if ($a_types["sec"] == "sec") {
            $select_prop = new ilSelectInputGUI(
                $this->lng->txt("cont_choose_characteristic_section"),
                "char_sec"
            );
            include_once("./Services/COPage/classes/class.ilPCSectionGUI.php");
            $options = ilPCSectionGUI::_getCharacteristics($this->page_gui->getStyleId());
            $select_prop->setOptions($options);
            $this->form->addItem($select_prop);
        }
        
        foreach ($a_target as $t) {
            $hidden = new ilHiddenInputGUI("target[]");
            $hidden->setValue($t);
            $this->form->addItem($hidden);
        }

        $this->form->setFormAction($ilCtrl->getFormAction($this));
        $this->form->addCommandButton("assignCharacteristic", $lng->txt("save"));
        $this->form->addCommandButton("showPage", $lng->txt("cancel"));
    }

    public function assignCharacteristic()
    {
        $char_par = ilUtil::stripSlashes($_POST["char_par"]);
        $char_sec = ilUtil::stripSlashes($_POST["char_sec"]);

        $updated = $this->page->assignCharacteristic($_POST["target"], $char_par, $char_sec);
        if ($updated !== true) {
            $_SESSION["il_pg_error"] = $updated;
        } else {
            unset($_SESSION["il_pg_error"]);
        }
        $this->ctrl->returnToParent($this);
    }

    public function pasteFromClipboard($a_hier_id)
    {
        $ilCtrl = $this->ctrl;
        //var_dump($a_hier_id);
        $ilCtrl->setParameter($this, "hier_id", $a_hier_id);
        $ilCtrl->setParameterByClass(
            "ilEditClipboardGUI",
            "returnCommand",
            rawurlencode($ilCtrl->getLinkTarget(
                $this,
                "insertFromClipboard",
                "",
                false,
                false
            ))
        );
        //echo ":".$ilCtrl->getLinkTarget($this, "insertFromClipboard").":";
        $ilCtrl->redirectByClass("ilEditClipboardGUI", "getObject");
    }

    public function insertFromClipboard()
    {
        include_once("./Services/Clipboard/classes/class.ilEditClipboardGUI.php");
        $ids = ilEditClipboardGUI::_getSelectedIDs();
        include_once("./Services/COPage/classes/class.ilPCMediaObject.php");

        $hier_id = $this->page->getHierIDForPCId($_GET["pc_id"]);
        if ($hier_id == "") {
            $hier_id = "pg";
        }

        if ($ids != "") {
            foreach ($ids as $id2) {
                $id = explode(":", $id2);
                $type = $id[0];
                $id = $id[1];
                if ($type == "mob") {
                    $this->content_obj = new ilPCMediaObject($this->page);
                    $this->content_obj->readMediaObject($id);
                    $this->content_obj->createAlias($this->page, $hier_id);
                    $this->updated = $this->page->update();
                }
                if ($type == "incl") {
                    include_once("./Services/COPage/classes/class.ilPCContentInclude.php");
                    $this->content_obj = new ilPCContentInclude($this->page);
                    $this->content_obj->create($this->page, $hier_id);
                    $this->content_obj->setContentType("mep");
                    $this->content_obj->setContentId($id);
                    $this->updated = $this->page->update();
                }
            }
        }
        $this->ctrl->returnToParent($this);
    }

    public function displayPage()
    {
        $this->ctrl->returnToParent($this);
    }
    
    public function displayLocator()
    {
        /*if(is_object($this->locator))
        {
            $this->locator->display();
        }*/
    }

    public function showSnippetInfo()
    {
        $tpl = $this->tpl;
        $lng = $this->lng;
        $ilAccess = $this->access;
        $ilCtrl = $this->ctrl;
        
        $stpl = new ilTemplate("tpl.snippet_info.html", true, true, "Services/COPage");
        
        include_once("./Modules/MediaPool/classes/class.ilMediaPoolItem.php");
        $mep_pools = ilMediaPoolItem::getPoolForItemId($_POST["ci_id"]);
        foreach ($mep_pools as $mep_id) {
            $ref_ids = ilObject::_getAllReferences($mep_id);
            $edit_link = false;
            foreach ($ref_ids as $rid) {
                if (!$edit_link && $ilAccess->checkAccess("write", "", $rid)) {
                    $stpl->setCurrentBlock("edit_link");
                    $stpl->setVariable("TXT_EDIT", $lng->txt("edit"));
                    $stpl->setVariable(
                        "HREF_EDIT",
                        "./goto.php?target=mep_" . $rid
                    );
                    $stpl->parseCurrentBlock();
                }
            }
            $stpl->setCurrentBlock("pool");
            $stpl->setVariable("TXT_MEDIA_POOL", $lng->txt("obj_mep"));
            $stpl->setVariable("VAL_MEDIA_POOL", ilObject::_lookupTitle($mep_id));
            $stpl->parseCurrentBlock();
        }
        
        include_once("./Modules/MediaPool/classes/class.ilMediaPoolPage.php");
        $stpl->setVariable("TXT_TITLE", $lng->txt("title"));
        $stpl->setVariable("VAL_TITLE", ilMediaPoolPage::lookupTitle($_POST["ci_id"]));
        $stpl->setVariable("TXT_BACK", $lng->txt("back"));
        $stpl->setVariable(
            "HREF_BACK",
            $ilCtrl->getLinkTarget($this->page_gui, "edit")
        );
        $tpl->setContent($stpl->get());
    }
}