class.ilLMPageObjectGUI.php

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

require_once("./Modules/LearningModule/classes/class.ilLMObjectGUI.php");
require_once("./Modules/LearningModule/classes/class.ilLMPageObject.php");
require_once("./Modules/LearningModule/classes/class.ilLMPageGUI.php");
require_once("./Services/Link/classes/class.ilInternalLinkGUI.php");

class ilLMPageObjectGUI extends ilLMObjectGUI
{
        var $obj;

        function __construct(&$a_content_obj)
        {
                parent::__construct($a_content_obj);

        }


        function setLMPageObject($a_pg_obj)
        {
                $this->obj = $a_pg_obj;
                $this->obj->setLMId($this->content_object->getId());
        }

        function executeCommand()
        {
                global $tpl, $ilCtrl, $ilTabs, $ilSetting;
                
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
                
//echo "<br>:cmd:".$this->ctrl->getCmd().":cmdClass:".$this->ctrl->getCmdClass().":".
//      ":nextClass:".$next_class.":"; flush();

                switch($next_class)
                {
                        case "illmpagegui":

                                // Determine whether the view of a learning resource should
                                // be shown in the frameset of ilias, or in a separate window.
                                //$showViewInFrameset = $this->ilias->ini->readVariable("layout","view_target") == "frame";
                                $showViewInFrameset = true;
                                $lm_set = new ilSetting("lm");

                                $this->ctrl->setReturn($this, "edit");
                                if (!ilPageObject::_exists("lm", $this->obj->getId(), $_GET["transl"]) &&
                                        ilPageObject::_exists("lm", $this->obj->getId(), "-"))
                                {
                                        if ($_GET["totransl"] == "")
                                        {
                                                $_GET["totransl"] = $_GET["transl"];
                                                $ilCtrl->setCmd("switchToLanguage");
                                        }
                                        $ilCtrl->setCmdClass("illmpagegui");
                                        $page_gui = new ilLMPageGUI($this->obj->getId(), 0, false, "-");
                                }
                                else
                                {
                                        $page_gui = new ilLMPageGUI($this->obj->getId());
                                }
                                $page_gui->setEditPreview(true);
                                $page_gui->activateMetaDataEditor($this->content_object,
                                        $this->obj->getType(), $this->obj->getId(),
                                        $this->obj, "MDUpdateListener");
                                if ($ilSetting->get("block_activated_news"))
                                {
                                        $page_gui->setEnabledNews(true, $this->obj->content_object->getId(),
                                                $this->obj->content_object->getType());
                                }

                                // set page view link
                                if ($showViewInFrameset)
                                {
                                        $view_frame = ilFrameTargetInfo::_getFrame("MainContent");
                                }
                                else
                                {
                                        $view_frame = "ilContObj".$this->content_object->getID();
                                }
                                $page_gui->setViewPageLink(ILIAS_HTTP_PATH."/goto.php?target=pg_".$this->obj->getId().
                                        "_".$_GET["ref_id"],
                                        $view_frame);

                                include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
                                $page_gui->setStyleId(ilObjStyleSheet::getEffectiveContentStyleId(
                                        $this->content_object->getStyleSheetId(), "lm"));
                                $page_gui->setTemplateTargetVar("ADM_CONTENT");
                                $page_gui->getPageObject()->buildDom();
                                $int_links = $page_gui->getPageObject()->getInternalLinks();
                                $link_xml = $this->getLinkXML($int_links);
                                $page_gui->setLinkXML($link_xml);

                                $page_gui->enableChangeComments($this->content_object->isActiveHistoryUserComments());
                                $page_gui->setFileDownloadLink("ilias.php?cmd=downloadFile&ref_id=".$_GET["ref_id"]."&baseClass=ilLMPresentationGUI");
                                $page_gui->setFullscreenLink("ilias.php?cmd=fullscreen&ref_id=".$_GET["ref_id"]."&baseClass=ilLMPresentationGUI");
                                $page_gui->setLinkParams("ref_id=".$this->content_object->getRefId());
                                $page_gui->setSourcecodeDownloadScript("ilias.php?ref_id=".$_GET["ref_id"]."&baseClass=ilLMPresentationGUI");
                                $page_gui->setPresentationTitle(
                                        ilLMPageObject::_getPresentationTitle($this->obj->getId(),
                                        $this->content_object->getPageHeader(), $this->content_object->isActiveNumbering()));
                                $page_gui->setLocator($contObjLocator);
                                $page_gui->setHeader($this->lng->txt("page").": ".$this->obj->getTitle());
                                $page_gui->setActivationListener($this, "activatePage");
                                
                                $up_gui = "ilobjlearningmodulegui";
                                $ilCtrl->setParameterByClass($up_gui, "active_node", $this->obj->getId());

                                $tpl->setTitleIcon(ilUtil::getImagePath("icon_pg.svg"));
                                $tpl->setTitle($this->lng->txt("page").": ".$this->obj->getTitle());
                                if ($this->content_object->getLayoutPerPage())
                                {
                                        $page_gui->setTabHook($this, "addPageTabs");
                                }
                                $ret = $this->ctrl->forwardCommand($page_gui);
                                $tpl->setContent($ret);
                                break;

                        default:
                                $ret = $this->$cmd();
                                break;
                }
        }


        /*
        * display content of page (edit view)
        */
        function edit()
        {
//echo "<br>umschuss";
                $this->ctrl->setCmdClass("ilLMPageGUI");
                $this->ctrl->setCmd("edit");
                $this->executeCommand();
                //$this->setTabs();
        }

        /*
        * display content of page (edit view)
        */
        function preview()
        {
                $this->ctrl->setCmdClass("ilLMPageGUI");
                $this->ctrl->setCmd("preview");
                $this->executeCommand();
//              $this->setTabs();
        }

        function save()
        {
                $this->obj = new ilLMPageObject($this->content_object);
                $this->obj->setType("pg");
                $this->obj->setTitle(ilUtil::stripSlashes($_POST["Fobject"]["title"]));
                $this->obj->setDescription(ilUtil::stripSlashes($_POST["Fobject"]["desc"]));
                $this->obj->setLMId($this->content_object->getId());
                $this->obj->create();

                // obj_id is empty, if page is created from "all pages" screen
                // -> a free page is created (not in the tree)
//echo "<br>savePage:".$_GET["obj_id"].":";
                if ($_GET["obj_id"] != 0)
                {
                        $this->putInTree();

                        // check the tree
                        $this->checkTree();

                        ilUtil::redirect($this->ctrl->getLinkTargetByClass("ilStructureObjectGUI",
                                "edit", "", true));
                }
                $up_gui = "ilobjlearningmodulegui";
                $this->ctrl->redirectByClass($up_gui, "pages");
        }

        function cancel()
        {
                if ($_GET["obj_id"] != 0)
                {
                        ilUtil::redirect($this->ctrl->getLinkTargetByClass("ilStructureObjectGUI",
                                "view", "", true));
                }
                $up_gui = "ilobjlearningmodulegui";
                $this->ctrl->redirectByClass($up_gui, "pages");
        }

        function getLinkXML($a_int_links)
        {
                if ($a_layoutframes == "")
                {
                        $a_layoutframes = array();
                }
                $link_info = "<IntLinkInfos>";
                foreach ($a_int_links as $int_link)
                {
                        $target = $int_link["Target"];
                        if (substr($target, 0, 4) == "il__")
                        {
                                $target_arr = explode("_", $target);
                                $target_id = $target_arr[count($target_arr) - 1];
                                $type = $int_link["Type"];
                                $targetframe = ($int_link["TargetFrame"] != "")
                                        ? $int_link["TargetFrame"]
                                        : "None";
                                        
                                // anchor
                                $anc = $anc_add = "";
                                if ($int_link["Anchor"] != "")
                                {
                                        $anc = $int_link["Anchor"];
                                        $anc_add = "_".rawurlencode($int_link["Anchor"]);
                                }

                                switch($type)
                                {
                                        case "PageObject":
                                        case "StructureObject":
                                                $lm_id = ilLMObject::_lookupContObjID($target_id);
                                                $cont_obj = $this->content_object;
                                                if ($lm_id == $cont_obj->getId())
                                                {
                                                        $ltarget = "";
                                                        if ($type == "PageObject")
                                                        {
                                                                $this->ctrl->setParameter($this, "obj_id", $target_id);
                                                                $href = $this->ctrl->getLinkTargetByClass(get_class($this), "edit");
                                                        }
                                                        else
                                                        {
                                                                $this->ctrl->setParameterByClass("ilstructureobjectgui", "obj_id", $target_id);
                                                                $href = $this->ctrl->getLinkTargetByClass("ilstructureobjectgui", "view");
                                                        }
                                                        $href = str_replace("&", "&amp;", $href);
                                                        $this->ctrl->setParameter($this, "obj_id", $_GET["obj_id"]);
                                                }
                                                else
                                                {
                                                        if ($type == "PageObject")
                                                        {
                                                                $href = "goto.php?target=pg_".$target_id.$anc_add;
                                                        }
                                                        else
                                                        {
                                                                $href = "goto.php?target=st_".$target_id;
                                                        }
                                                        $ltarget = "ilContObj".$lm_id;
                                                }
                                                if ($lm_id == "")
                                                {
                                                        $href = "";
                                                }
                                                break;

                                        case "GlossaryItem":
                                                $ltarget = $nframe = "_blank";
                                                $href = "ilias.php?cmdClass=illmpresentationgui&amp;baseClass=ilLMPresentationGUI&amp;".
                                                        "obj_type=$type&amp;cmd=glossary&amp;ref_id=".$_GET["ref_id"].
                                                        "&amp;obj_id=".$target_id."&amp;frame=$nframe";
                                                break;

                                        case "MediaObject":
                                                $ltarget = $nframe = "_blank";
                                                $href = "ilias.php?cmdClass=illmpresentationgui&amp;baseClass=ilLMPresentationGUI&amp;obj_type=$type&amp;cmd=media&amp;ref_id=".$_GET["ref_id"].
                                                        "&amp;mob_id=".$target_id."&amp;frame=$nframe";
                                                break;
                                                
                                        case "RepositoryItem":
                                                $obj_type = ilObject::_lookupType($target_id, true);
                                                $obj_id = ilObject::_lookupObjId($target_id);
                                                $href = "./goto.php?target=".$obj_type."_".$target_id;
                                                $t_frame = ilFrameTargetInfo::_getFrame("MainContent", $obj_type);
                                                $ltarget = $t_frame;
                                                break;

                                        case "File":
                                                $this->ctrl->setParameter($this, "file_id", "il__file_".$target_id);
                                                $href = $this->ctrl->getLinkTarget($this, "downloadFile");
                                                $this->ctrl->setParameter($this, "file_id", "");
                                                break;

                                }

                                if ($href != "")
                                {
                                        $anc_par = 'Anchor="' . $anc . '"';
                                        $link_info .= "<IntLinkInfo Target=\"$target\" Type=\"$type\" " .
                                                "TargetFrame=\"$targetframe\" LinkHref=\"$href\" LinkTarget=\"$ltarget\" $anc_par/>";
                                }
                        }
                }
                $link_info.= "</IntLinkInfos>";
//echo ":".htmlentities($link_info).":";
                return $link_info;
        }

        function updateHistory()
        {
                require_once("./Services/History/classes/class.ilHistory.php");
                ilHistory::_createEntry($this->obj->getId(), "update",
                        "", $this->content_object->getType().":pg",
                        "", true);
        }

        public static function _goto($a_target)
        {
                global $rbacsystem, $ilErr, $lng, $ilAccess;

                $first = strpos($a_target, "_");
                $second = strpos($a_target, "_", $first + 1);
                $page_id = substr($a_target, 0, $first);
                if ($first > 0)
                {
                        $page_id = substr($a_target, 0, $first);
                        if ($second > 0)
                        {
                                $ref_id = substr($a_target, $first + 1, $second - ($first + 1));
                                $anchor = substr($a_target, $second + 1);
                        }
                        else
                        {
                                $ref_id = substr($a_target, $first + 1);
                        }
                }
                else
                {
                        $page_id = $a_target;
                }

                // determine learning object
                $lm_id = ilLMObject::_lookupContObjID($page_id);

                // get all references
                $ref_ids = ilObject::_getAllReferences($lm_id);

                // always try passed ref id first
                if (in_array($ref_id, $ref_ids))
                {
                        $ref_ids = array_merge(array($ref_id), $ref_ids);
                }

                // check read permissions
                foreach ($ref_ids as $ref_id)
                {
                        // check read permissions
                        if ($ilAccess->checkAccess("read", "", $ref_id))
                        {
                                // don't redirect anymore, just set parameters
                                // (goto.php includes  "ilias.php")
                                $_GET["baseClass"] = "ilLMPresentationGUI";
                                $_GET["obj_id"] = $page_id;
                                $_GET["ref_id"] = $ref_id;
                                $_GET["anchor"] = $anchor;
                                include_once("ilias.php");
                                exit;
                        }
                }

                if ($ilAccess->checkAccess("read", "", ROOT_FOLDER_ID))
                {
                        if ($lm_id > 0)
                        {
                                ilUtil::sendFailure(sprintf($lng->txt("msg_no_perm_read_item"),
                                        ilObject::_lookupTitle($lm_id)), true);
                        }
                        else
                        {
                                $lng->loadLanguageModule("content");
                                ilUtil::sendFailure($lng->txt("page_does_not_exist"), true);
                        }
                        include_once("./Services/Object/classes/class.ilObjectGUI.php");
                        ilObjectGUI::_gotoRepositoryRoot();
                }

                $ilErr->raiseError($lng->txt("msg_no_perm_read_lm"), $ilErr->FATAL);
        }

        function editLayout()
        {
                global $tpl, $ilCtrl, $ilTabs;
                
                $page_gui = new ilLMPageGUI($this->obj->getId());
                $page_gui->setEditPreview(true);
                $page_gui->activateMetaDataEditor($this->content_object,
                        $this->obj->getType(), $this->obj->getId(),
                        $this->obj, "MDUpdateListener");
                $page_gui->setActivationListener($this, "activatePage");
                $page_gui->setTabHook($this, "addPageTabs");
                $lm_set = new ilSetting("lm");
                $tpl->setTitleIcon(ilUtil::getImagePath("icon_pg.svg"));
                $tpl->setTitle($this->lng->txt("page").": ".$this->obj->getTitle());
                $ilCtrl->getHTML($page_gui);
                $ilTabs->setTabActive("cont_layout");
                $this->initEditLayoutForm();
                $tpl->setContent($this->form->getHTML());
        }
        
        public function initEditLayoutForm()
        {
                global $lng, $ilCtrl;
        
                include_once("Services/Form/classes/class.ilPropertyFormGUI.php");
                $this->form = new ilPropertyFormGUI();
        
                // default layout
                $layout = new ilRadioGroupInputGUI($lng->txt("cont_layout"), "layout");
                
                if (is_file($im = ilUtil::getImagePath("layout_".$this->content_object->getLayout().".png")))
                {
                        $im_tag = ilUtil::img($im, $this->content_object->getLayout());
                }
                $layout->addOption(new ilRadioOption("<table><tr><td>".$im_tag."</td><td><b>".
                        $lng->txt("cont_lm_default_layout").
                        "</b>: ".$lng->txt("cont_layout_".$this->content_object->getLayout()).
                        "</td></tr></table>", ""));
                
                foreach(ilObjContentObject::getAvailableLayouts() as $l)
                {
                        $im_tag = "";
                        if (is_file($im = ilUtil::getImagePath("layout_".$l.".png")))
                        {
                                $im_tag = ilUtil::img($im, $l);
                        }
                        $layout->addOption(new ilRadioOption("<table><tr><td>".$im_tag."</td><td><b>".
                                $lng->txt("cont_layout_".$l)."</b>: ".$lng->txt("cont_layout_".$l."_desc").
                                "</td></tr></table>", $l));
                }
                
                $layout->setValue($this->obj->getLayout());
                $this->form->addItem($layout);

                $this->form->addCommandButton("saveLayout", $lng->txt("save"));
                        
                $this->form->setTitle($lng->txt("cont_page_layout"));
                $this->form->setFormAction($ilCtrl->getFormAction($this));
         
        }
        
        public function saveLayout()
        {
                global $tpl, $lng, $ilCtrl;
        
                $this->initEditLayoutForm();
                if ($this->form->checkInput())
                {
                        ilLMObject::writeLayout($this->obj->getId(), $this->form->getInput("layout"));
                        ilUtil::sendSuccess($lng->txt("msg_obj_modified"), true);
                        $ilCtrl->redirect($this, "editLayout");
                }
                $this->form->setValuesByPost();
                $tpl->setContent($this->form->getHtml());
        }
        
        function addPageTabs()
        {
                global $ilTabs, $ilCtrl;
                
                $ilTabs->addTarget("cont_layout",
                         $ilCtrl->getLinkTarget($this, 'editLayout'), "editLayout");
        }

        function downloadFile()
        {
                $pg_obj = $this->obj->getPageObject();
                $pg_obj->buildDom();
                $int_links = $pg_obj->getInternalLinks();
                foreach ($int_links as $il)
                {
                        if ($il["Target"] == str_replace("_file_", "_dfile_", $_GET["file_id"]))
                        {
                                $file = explode("_", $_GET["file_id"]);
                                $file_id = (int) $file[count($file) - 1];
                                require_once("./Modules/File/classes/class.ilObjFile.php");
                                $fileObj = new ilObjFile($file_id, false);
                                $fileObj->sendFile();
                                exit;
                        }
                }
        }

}
?>