class.ilImageMapEditorGUI.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilImageMapEditorGUI
{
        function __construct($a_media_object)
        {
                $this->media_object = $a_media_object;
        }
        
        function executeCommand()
        {
                global $ilCtrl, $tpl;
                
                $next_class = $ilCtrl->getNextClass($this);
                $cmd = $ilCtrl->getCmd();

                switch($next_class)
                {
                        case "ilinternallinkgui":
                                require_once("./Services/Link/classes/class.ilInternalLinkGUI.php");
                                $link_gui = new ilInternalLinkGUI("Media_Media", 0);
                                $link_gui->setMode("link");
                                $link_gui->setSetLinkTargetScript(
                                        $ilCtrl->getLinkTarget($this,
                                        "setInternalLink"));
                                $link_gui->filterLinkType("File");
                                $link_gui->setMode("asynch");
                                $ret = $ilCtrl->forwardCommand($link_gui);
                                break;

                        default:
                                require_once("./Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php");
                                ilObjMediaObjectGUI::includePresentationJS();
                                if (isset($_POST["editImagemapForward"]) ||
                                        isset($_POST["editImagemapForward_x"]) ||
                                        isset($_POST["editImagemapForward_y"]))
                                {
                                        $cmd = "editImagemapForward";
                                }
                                $ret = $this->$cmd();
                                break;
                }
                
                return $ret;
        }
                
        function editMapAreas()
        {
                global $ilCtrl, $lng, $ilToolbar;
                
                $_SESSION["il_map_edit_target_script"] = $ilCtrl->getLinkTarget($this, "addArea",
                        "", false, false);
                $this->handleMapParameters();

                $this->tpl = new ilTemplate("tpl.map_edit.html", true, true, "Services/MediaObjects");
                $this->tpl->setVariable("FORMACTION", $ilCtrl->getFormAction($this));

                // create/update imagemap work copy
                $this->makeMapWorkCopy();

                $output = $this->getImageMapOutput();
                $this->tpl->setVariable("IMAGE_MAP", $output);
                
                $this->tpl->setVariable("TOOLBAR", $this->getToolbar()->getHTML());
                
                // table
                $this->tpl->setVariable("MAP_AREA_TABLE", $this->getImageMapTableHTML());
                
                return $this->tpl->get();
        }

        function getToolbar()
        {
                global $ilCtrl, $lng, $tpl;
                
                // toolbar
                $tb = new ilToolbarGUI();
                $tb->setFormAction($ilCtrl->getFormAction($this));
                include_once("./Services/Form/classes/class.ilSelectInputGUI.php");
                $options = array(
                        "WholePicture" => $lng->txt("cont_WholePicture"),
                        "Rect" => $lng->txt("cont_Rect"),
                        "Circle" => $lng->txt("cont_Circle"),
                        "Poly" => $lng->txt("cont_Poly"),
                        );
                $si = new ilSelectInputGUI($lng->txt("cont_shape"), "shape");
                $si->setOptions($options);
                $tb->addInputItem($si, true);
                $tb->addFormButton($lng->txt("cont_add_area"), "addNewArea");
                
                
                // highlight mode
/*              if (strtolower(get_class($this)) == "ilimagemapeditorgui")
                {
                        $st_item = $this->media_object->getMediaItem("Standard");
                        $tb->addSeparator();
                        $options = ilMapArea::getAllHighlightModes();
                        $hl = new ilSelectInputGUI($lng->txt("cont_highlight_mode"), "highlight_mode");
                        $hl->setOptions($options);
//                      $hl->setValue($st_item->getHighlightMode());
                        $tb->addInputItem($hl, true);
                        $options = ilMapArea::getAllHighlightClasses();
                        $hc = new ilSelectInputGUI($lng->txt("cont_highlight_class"), "highlight_class");
                        $hc->setOptions($options);
//                      $hc->setValue($st_item->getHighlightClass());
                        $tb->addInputItem($hc, false);
                        $tb->addFormButton($lng->txt("cont_set"), "setHighlight");
                }*/
                
                return $tb;
        }
        
        
        function getEditorTitle()
        {
                global $lng;
                
                return $lng->txt("cont_imagemap");
        }
        
        
        function getImageMapTableHTML()
        {
                include_once("./Services/MediaObjects/classes/class.ilImageMapTableGUI.php");
                $image_map_table = new ilImageMapTableGUI($this, "editMapAreas", $this->media_object);
                return $image_map_table->getHTML();
        }
        
        function handleMapParameters()
        {
                if($_GET["ref_id"] != "")
                {
                        $_SESSION["il_map_edit_ref_id"] = $_GET["ref_id"];
                }

                if($_GET["obj_id"] != "")
                {
                        $_SESSION["il_map_edit_obj_id"] = $_GET["obj_id"];
                }

                if($_GET["hier_id"] != "")
                {
                        $_SESSION["il_map_edit_hier_id"] = $_GET["hier_id"];
                }
                
                if($_GET["pc_id"] != "")
                {
                        $_SESSION["il_map_edit_pc_id"] = $_GET["pc_id"];
                }
        }

        function showImageMap()
        {
                $item =& new ilMediaItem($_GET["item_id"]);
                $item->outputMapWorkCopy();
        }

        function updateAreas()
        {
                global $lng, $ilCtrl;
                
                $st_item =& $this->media_object->getMediaItem("Standard");
                $max = ilMapArea::_getMaxNr($st_item->getId());
                for ($i=1; $i<=$max; $i++)
                {
                        $area =& new ilMapArea($st_item->getId(), $i);
                        $area->setTitle(ilUtil::stripSlashes($_POST["name_".$i]));
                        $area->setHighlightMode(ilUtil::stripSlashes($_POST["hl_mode_".$i]));
                        $area->setHighlightClass(ilUtil::stripSlashes($_POST["hl_class_".$i]));
                        $area->update();
                }

                ilUtil::sendSuccess($lng->txt("cont_saved_map_data"), true);
                $ilCtrl->redirect($this, "editMapAreas");
        }

        function addNewArea()
        {
                switch ($_POST["shape"])
                {
                        case "WholePicture": return $this->linkWholePicture();
                        case "Rect": return $this->addRectangle();
                        case "Circle": return $this->addCircle();
                        case "Poly": return $this->addPolygon();
                }
        }
        
        
        function linkWholePicture()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "WholePicture";

                return $this->editMapArea(false, false, true);
        }

        function addRectangle()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "Rect";
                return $this->addArea(false);
        }

        function addCircle()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "Circle";
                return $this->addArea(false);
        }

        function addPolygon()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "Poly";
                return $this->addArea(false);
        }

        function clearSessionVars()
        {
                $_SESSION["il_map_area_nr"] = "";
                $_SESSION["il_map_edit_coords"] = "";
                $_SESSION["il_map_edit_mode"] = "";
                $_SESSION["il_map_el_href"] = "";
                $_SESSION["il_map_il_type"] = "";
                $_SESSION["il_map_il_ltype"] = "";
                $_SESSION["il_map_il_target"] = "";
                $_SESSION["il_map_il_targetframe"] = "";
                $_SESSION["il_map_edit_area_type"] = "";
        }
        
        function addArea($a_handle = true)
        {

                // handle map parameters
                if($a_handle)
                {
                        $this->handleMapParameters();
                }

                $area_type = $_SESSION["il_map_edit_area_type"];
                $coords = $_SESSION["il_map_edit_coords"];
                include_once("./Services/MediaObjects/classes/class.ilMapArea.php");
                $cnt_coords = ilMapArea::countCoords($coords);

                // decide what to do next
                switch ($area_type)
                {
                        // Rectangle
                        case "Rect" :
                                if ($cnt_coords < 2)
                                {
                                        $html = $this->editMapArea(true, false, false);
                                        return $html;
                                }
                                else if ($cnt_coords == 2)
                                {
                                        return $this->editMapArea(false, true, true);
                                }
                                break;

                        // Circle
                        case "Circle":
                                if ($cnt_coords <= 1)
                                {
                                        return $this->editMapArea(true, false, false);
                                }
                                else
                                {
                                        if ($cnt_coords == 2)
                                        {
                                                $c = explode(",",$coords);
                                                $coords = $c[0].",".$c[1].",";  // determine radius
                                                $coords .= round(sqrt(pow(abs($c[3]-$c[1]),2)+pow(abs($c[2]-$c[0]),2)));
                                        }
                                        $_SESSION["il_map_edit_coords"] = $coords;

                                        return $this->editMapArea(false, true, true);
                                }
                                break;

                        // Polygon
                        case "Poly":
                                if ($cnt_coords < 1)
                                {
                                        return $this->editMapArea(true, false, false);
                                }
                                else if ($cnt_coords < 3)
                                {
                                        return $this->editMapArea(true, true, false);
                                }
                                else
                                {
                                        return $this->editMapArea(true, true, true);
                                }
                                break;

                        // Whole picture
                        case "WholePicture":
                                return $this->editMapArea(false, false, true);
                                break;
                }
        }

        function editMapArea($a_get_next_coordinate = false, $a_output_new_area = false,
                $a_save_form = false, $a_edit_property = "", $a_area_nr = 0)
        {
                global $ilCtrl, $lng, $tpl;
                
                $area_type = $_SESSION["il_map_edit_area_type"];
                $coords = $_SESSION["il_map_edit_coords"];
                include_once("./Services/MediaObjects/classes/class.ilMapArea.php");
                $cnt_coords = ilMapArea::countCoords($coords);

                $this->tpl = new ilTemplate("tpl.map_edit.html", true, true, "Services/MediaObjects");

                $this->tpl->setVariable("FORMACTION", $ilCtrl->getFormAction($this));

                if ($a_edit_property != "link")
                {
                        switch ($area_type)
                        {
                                // rectangle
                                case "Rect" :
                                        if ($cnt_coords == 0)
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_tl_corner"));
                                        }
                                        if ($cnt_coords == 1)
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_br_corner"));
                                        }
                                        break;

                                // circle
                                case "Circle" :
                                        if ($cnt_coords == 0)
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_center"));
                                        }
                                        if ($cnt_coords == 1)
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_circle"));
                                        }
                                        break;

                                // polygon
                                case "Poly" :
                                        if ($cnt_coords == 0)
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_starting_point"));
                                        }
                                        else if ($cnt_coords < 3)
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_next_point"));
                                        }
                                        else
                                        {
                                                ilUtil::sendInfo($lng->txt("cont_click_next_or_save"));
                                        }
                                        break;
                        }
                }


                // map properties input fields (name and link)
                if ($a_save_form)
                {
                        if ($a_edit_property != "shape")
                        {
                                // prepare link gui
                                $ilCtrl->setParameter($this, "linkmode", "map");
                                include_once("./Services/Link/classes/class.ilInternalLinkGUI.php");
                                $this->tpl->setCurrentBlock("int_link_prep");
                                $this->tpl->setVariable("INT_LINK_PREP", ilInternalLinkGUI::getInitHTML(
                                        $ilCtrl->getLinkTargetByClass("ilinternallinkgui",
                                                        "", false, true, false)));
                                $this->tpl->parseCurrentBlock();
                        }
                        $form = $this->initAreaEditingForm($a_edit_property);
                        $this->tpl->setVariable("FORM", $form->getHTML());
                }
                
                $this->makeMapWorkCopy($a_edit_property, $a_area_nr,
                        $a_output_new_area, $area_type, $coords);
                
                $edit_mode = ($a_get_next_coordinate)
                        ? "get_coords"
                        : (($a_output_new_area)
                                ? "new_area"
                                :"");
                $output = $this->getImageMapOutput($edit_mode);
                $this->tpl->setVariable("IMAGE_MAP", $output);

                return $this->tpl->get();
        }
        
        public function initAreaEditingForm($a_edit_property)
        {
                global $lng, $ilCtrl;
        
                include_once("Services/Form/classes/class.ilPropertyFormGUI.php");
                $form = new ilPropertyFormGUI();
                $form->setOpenTag(false);
                $form->setCloseTag(false);
                
                // link
                if ($a_edit_property != "shape")
                {
                        // 
                        $radg = new ilRadioGroupInputGUI($lng->txt("cont_link"), "area_link_type");
                        if ($_SESSION["il_map_il_ltype"] != "int")
                        {
                                if ($_SESSION["il_map_el_href"] == "")
                                {
                                        $radg->setValue("no");
                                }
                                else
                                {
                                        $radg->setValue("ext");
                                }
                        }
                        else
                        {
                                $radg->setValue("int");
                        }
                        
                        // external link
                        $ext = new ilRadioOption($lng->txt("cont_link_ext"), "ext");
                        $radg->addOption($ext);
                        
                                $ti = new ilTextInputGUI("", "area_link_ext");
                                $ti->setMaxLength(200);
                                $ti->setSize(50);
                                if ($_SESSION["il_map_el_href"] != "")
                                {
                                        $ti->setValue($_SESSION["il_map_el_href"]);
                                }
                                else
                                {
                                        $ti->setValue("http://");
                                }
                                $ext->addSubItem($ti);
                        
                        // internal link
                        $int = new ilRadioOption($lng->txt("cont_link_int"), "int");
                        $radg->addOption($int);
                        
                                $ne = new ilNonEditableValueGUI("", "", true);
                                $link_str = "";
                                if($_SESSION["il_map_il_target"] != "")
                                {
                                        $link_str = $this->getMapAreaLinkString($_SESSION["il_map_il_target"],
                                                $_SESSION["il_map_il_type"], $_SESSION["il_map_il_targetframe"]);
                                }
                                $ne->setValue($link_str.
                                        '&nbsp;<a id="iosEditInternalLinkTrigger" href="#">'.
                                        "[".$lng->txt("cont_get_link")."]".
                                        '</a>'
                                        );
                                $int->addSubItem($ne);
                                
                        // no link
                        $no = new ilRadioOption($lng->txt("cont_link_no"), "no");
                        $radg->addOption($no);
                        
                        $form->addItem($radg);
                }

                
                // name
                if ($a_edit_property != "link" && $a_edit_property != "shape")
                { 
                        $ti = new ilTextInputGUI($lng->txt("cont_name"), "area_name");
                        $ti->setMaxLength(200);
                        $ti->setSize(20);
                        $form->addItem($ti);
                }
                
                // save and cancel commands
                if ($a_edit_property == "")
                {
                        $form->setTitle($lng->txt("cont_new_area"));
                        $form->addCommandButton("saveArea", $lng->txt("save"));
                }
                else
                {
                        $form->setTitle($lng->txt("cont_new_area"));
                        $form->addCommandButton("saveArea", $lng->txt("save"));
                }
                        
//              $form->setFormAction($ilCtrl->getFormAction($this));
                
                return $form;
        }
        
        function makeMapWorkCopy($a_edit_property = "", $a_area_nr = 0,
                $a_output_new_area = false, $a_area_type = "", $a_coords = "")
        {
                // create/update imagemap work copy
                $st_item = $this->media_object->getMediaItem("Standard");

                if ($a_edit_property == "shape")
                {
                        $st_item->makeMapWorkCopy($a_area_nr, true);    // exclude area currently being edited
                }
                else
                {
                        $st_item->makeMapWorkCopy($a_area_nr, false);
                }

                if ($a_output_new_area)
                {
                        $st_item->addAreaToMapWorkCopy($a_area_type, $a_coords);
                }
        }
        
        function getImageMapOutput($a_map_edit_mode = "")
        {
                global $ilCtrl;
                
                $st_item = $this->media_object->getMediaItem("Standard");
                
                // output image map
                $xml = "<dummy>";
                $xml.= $this->getAliasXML();
                $xml.= $this->media_object->getXML(IL_MODE_OUTPUT);
                $xml.= $this->getAdditionalPageXML();
                $xml.="</dummy>";
                $xsl = file_get_contents("./Services/COPage/xsl/page.xsl");
//echo htmlentities($xml); exit;
                $args = array( '/_xml' => $xml, '/_xsl' => $xsl );
                $xh = xslt_create();
                $wb_path = ilUtil::getWebspaceDir("output")."/";
                $mode = "media";
//echo htmlentities($ilCtrl->getLinkTarget($this, "showImageMap"));
                $params = array ('map_edit_mode' => $a_map_edit_mode,
                        'map_item' => $st_item->getId(),
                        'map_mob_id' => $this->media_object->getId(),
                        'mode' => $mode,
                        'media_mode' => 'enable',
                        'image_map_link' => $ilCtrl->getLinkTarget($this, "showImageMap", "", false, false),
                        'link_params' => "ref_id=".$_GET["ref_id"]."&rand=".rand(1,999999),
                        'ref_id' => $_GET["ref_id"],
                        'pg_frame' => "",
                        'enlarge_path' => ilUtil::getImagePath("enlarge.svg"),
                        'webspace_path' => $wb_path);
                $output = xslt_process($xh,"arg:/_xml","arg:/_xsl",NULL,$args, $params);
                echo xslt_error($xh);
                xslt_free($xh);
                
                $output = $this->outputPostProcessing($output);
                
                return $output;
        }
        
        function getAdditionalPageXML()
        {
                return "";
        }
        
        function outputPostProcessing($a_output)
        {
                return $a_output;
        }

        function getAliasXML()
        {
                return $this->media_object->getXML(IL_MODE_ALIAS);
        }

        function getMapAreaLinkString($a_target, $a_type, $a_frame)
        {
                global $lng;
                
                $t_arr = explode("_", $a_target);
                if ($a_frame != "")
                {
                        $frame_str = " (".$a_frame." Frame)";
                }
                switch($a_type)
                {
                        case "StructureObject":
                                require_once("./Modules/LearningModule/classes/class.ilLMObject.php");
                                $title = ilLMObject::_lookupTitle($t_arr[count($t_arr) - 1]);
                                $link_str = $lng->txt("chapter").
                                        ": ".$title." [".$t_arr[count($t_arr) - 1]."]".$frame_str;
                                break;

                        case "PageObject":
                                require_once("./Modules/LearningModule/classes/class.ilLMObject.php");
                                $title = ilLMObject::_lookupTitle($t_arr[count($t_arr) - 1]);
                                $link_str = $lng->txt("page").
                                        ": ".$title." [".$t_arr[count($t_arr) - 1]."]".$frame_str;
                                break;

                        case "GlossaryItem":
                                require_once("./Modules/Glossary/classes/class.ilGlossaryTerm.php");
                                $term =& new ilGlossaryTerm($t_arr[count($t_arr) - 1]);
                                $link_str = $lng->txt("term").
                                        ": ".$term->getTerm()." [".$t_arr[count($t_arr) - 1]."]".$frame_str;
                                break;

                        case "MediaObject":
                                require_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                                $mob =& new ilObjMediaObject($t_arr[count($t_arr) - 1]);
                                $link_str = $lng->txt("mob").
                                        ": ".$mob->getTitle()." [".$t_arr[count($t_arr) - 1]."]".$frame_str;
                                break;
                                
                        case "RepositoryItem":
                                $title = ilObject::_lookupTitle(
                                        ilObject::_lookupObjId($t_arr[count($t_arr) - 1]));
                                $link_str = $lng->txt("obj_".$t_arr[count($t_arr) - 2]).
                                        ": ".$title." [".$t_arr[count($t_arr) - 1]."]".$frame_str;
                                break;
                }

                return $link_str;
        }

        function editImagemapForward()
        {
                ilImageMapEditorGUI::_recoverParameters();

                if ($_SESSION["il_map_edit_coords"] != "")
                {
                        $_SESSION["il_map_edit_coords"] .= ",";
                }

                $_SESSION["il_map_edit_coords"] .= $_POST["editImagemapForward_x"].",".
                        $_POST["editImagemapForward_y"];

                // call editing script
                ilUtil::redirect($_SESSION["il_map_edit_target_script"]);
        }

        function _recoverParameters()
        {
                $_GET["ref_id"] = $_SESSION["il_map_edit_ref_id"];
                $_GET["obj_id"] = $_SESSION["il_map_edit_obj_id"];
                $_GET["hier_id"] = $_SESSION["il_map_edit_hier_id"];
                $_GET["pc_id"] = $_SESSION["il_map_edit_pc_id"];
        }

        function saveArea()
        {
                global $lng, $ilCtrl;
                
                switch ($_SESSION["il_map_edit_mode"])
                {
                        // save edited link
                        case "edit_link":
                                $st_item = $this->media_object->getMediaItem("Standard");
                                $max = ilMapArea::_getMaxNr($st_item->getId());
                                $area = new ilMapArea($st_item->getId(), $_SESSION["il_map_area_nr"]);

                                if ($_POST["area_link_type"] == IL_INT_LINK)
                                {
                                        $area->setLinkType(IL_INT_LINK);
                                        $area->setType($_SESSION["il_map_il_type"]);
                                        $area->setTarget($_SESSION["il_map_il_target"]);
                                        $area->setTargetFrame($_SESSION["il_map_il_targetframe"]);
                                }
                                else
                                {
                                        $area->setLinkType(IL_EXT_LINK);
                                        if ($_POST["area_link_type"] != IL_NO_LINK)
                                        {
                                                $area->setHref(ilUtil::stripSlashes($_POST["area_link_ext"]));
                                        }
                                        else
                                        {
                                                $area->setHref("");
                                        }
                                }
                                $area->update();
                                break;

                        // save edited shape
                        case "edit_shape":
                                $st_item = $this->media_object->getMediaItem("Standard");
                                $max = ilMapArea::_getMaxNr($st_item->getId());
                                $area =& new ilMapArea($st_item->getId(), $_SESSION["il_map_area_nr"]);

                                $area->setShape($_SESSION["il_map_edit_area_type"]);
                                $area->setCoords($_SESSION["il_map_edit_coords"]);
                                $area->update();
                                break;

                        // save new area
                        default:
                                $area_type = $_SESSION["il_map_edit_area_type"];
                                $coords = $_SESSION["il_map_edit_coords"];

                                $st_item = $this->media_object->getMediaItem("Standard");
                                $max = ilMapArea::_getMaxNr($st_item->getId());

                                // make new area object
                                $area = new ilMapArea();
                                $area->setItemId($st_item->getId());
                                $area->setShape($area_type);
                                $area->setCoords($coords);
                                $area->setNr($max + 1);
                                $area->setTitle(ilUtil::stripSlashes($_POST["area_name"]));
                                switch($_POST["area_link_type"])
                                {
                                        case "ext":
                                                $area->setLinkType(IL_EXT_LINK);
                                                $area->setHref($_POST["area_link_ext"]);
                                                break;

                                        case "int":
                                                $area->setLinkType(IL_INT_LINK);
                                                $area->setType($_SESSION["il_map_il_type"]);
                                                $area->setTarget($_SESSION["il_map_il_target"]);
                                                $area->setTargetFrame($_SESSION["il_map_il_targetframe"]);
                                                break;
                                }

                                // put area into item and update media object
                                $st_item->addMapArea($area);
                                $this->media_object->update();
                                break;
                }

                //$this->initMapParameters();
                ilUtil::sendSuccess($lng->txt("cont_saved_map_area"), true);
                $ilCtrl->redirect($this, "editMapAreas");
        }

        function setInternalLink()
        {
                $_SESSION["il_map_il_type"] = $_GET["linktype"];
                $_SESSION["il_map_il_ltype"] = "int";

                $_SESSION["il_map_il_target"] = $_GET["linktarget"];
                $_SESSION["il_map_il_targetframe"] = $_GET["linktargetframe"];
                switch ($_SESSION["il_map_edit_mode"])
                {
                        case "edit_link":
                                return $this->setLink();
                                break;

                        default:
                                return $this->addArea();
                                break;
                }
        }
        
        function setLink($a_handle = true)
        {
                global $lng, $ilCtrl;

                if($a_handle)
                {
                        $this->handleMapParameters();
                }
                if ($_SESSION["il_map_area_nr"] != "")
                {
                        $_POST["area"][0] = $_SESSION["il_map_area_nr"];
                }
                if (!isset($_POST["area"]))
                {
                        ilUtil::sendFailure($lng->txt("no_checkbox"), true);
                        $ilCtrl->redirect($this, "editMapAreas");
                }

                if (count($_POST["area"]) > 1)
                {
                        //$this->ilias->raiseError($this->lng->txt("cont_select_max_one_item"),$this->ilias->error_obj->MESSAGE);
                        ilUtil::sendFailure($lng->txt("cont_select_max_one_item"), true);
                        $ilCtrl->redirect($this, "editMapAreas");
                }


                if ($_SESSION["il_map_edit_mode"] != "edit_link")
                {
                        $_SESSION["il_map_area_nr"] = $_POST["area"][0];
                        $_SESSION["il_map_il_ltype"] = $this->getLinkTypeOfArea($_POST["area"][0]);
                        $_SESSION["il_map_edit_mode"] = "edit_link";
                        $_SESSION["il_map_edit_target_script"] = $ilCtrl->getLinkTarget($this, "setLink");
                        if ($_SESSION["il_map_il_ltype"] == IL_INT_LINK)
                        {
                                $_SESSION["il_map_il_type"] = $this->getTypeOfArea($_POST["area"][0]);
                                $_SESSION["il_map_il_target"] = $this->getTargetOfArea($_POST["area"][0]);
                                $_SESSION["il_map_il_targetframe"] = $this->getTargetFrameOfArea($_POST["area"][0]);
                        }
                        else
                        {
                                $_SESSION["il_map_el_href"] = $this->getHrefOfArea($_POST["area"][0]);
                        }
                }

                return $this->editMapArea(false, false, true, "link", $_POST["area"][0]);
        }

        function getLinkTypeOfArea($a_nr)
        {
                $st_item = $this->media_object->getMediaItem("Standard");
                $area = $st_item->getMapArea($a_nr);
                return $area->getLinkType();
        }

        function getTypeOfArea($a_nr)
        {
                $st_item = $this->media_object->getMediaItem("Standard");
                $area = $st_item->getMapArea($a_nr);
                return $area->getType();
        }

        function getTargetOfArea($a_nr)
        {
                $st_item = $this->media_object->getMediaItem("Standard");
                $area = $st_item->getMapArea($a_nr);
                return $area->getTarget();
        }

        function getTargetFrameOfArea($a_nr)
        {
                $st_item = $this->media_object->getMediaItem("Standard");
                $area = $st_item->getMapArea($a_nr);
                return $area->getTargetFrame();
        }

        function getHrefOfArea($a_nr)
        {
                $st_item = $this->media_object->getMediaItem("Standard");
                $area = $st_item->getMapArea($a_nr);
                return $area->getHref();
        }

        function deleteAreas()
        {
                global $ilCtrl, $lng;
                
                if (!isset($_POST["area"]))
                {
                        ilUtil::sendFailure($lng->txt("no_checkbox"), true);
                        $ilCtrl->redirect($this, "editMapAreas");
                }

                $st_item = $this->media_object->getMediaItem("Standard");
                $max = ilMapArea::_getMaxNr($st_item->getId());

                if (count($_POST["area"]) > 0)
                {
                        $i = 0;

                        foreach ($_POST["area"] as $area_nr)
                        {
                                $st_item->deleteMapArea($area_nr - $i);
                                $i++;
                        }

                        $this->media_object->update();
                        ilUtil::sendSuccess($lng->txt("cont_areas_deleted"), true);
                }

                $ilCtrl->redirect($this, "editMapAreas");
        }

        function editLink()
        {
                $_SESSION["il_map_edit_coords"] = "";
                $_SESSION["il_map_edit_mode"] = "";
                $_SESSION["il_map_el_href"] = "";
                $_SESSION["il_map_il_type"] = "";
                $_SESSION["il_map_il_ltype"] = "";
                $_SESSION["il_map_il_target"] = "";
                $_SESSION["il_map_il_targetframe"] = "";
                $_SESSION["il_map_area_nr"] = "";
                return $this->setLink(false);
        }

        function editShapeWholePicture()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "WholePicture";
                return $this->setShape(false);
        }

        function editShapeRectangle()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "Rect";
                return $this->setShape(false);
        }

        function editShapeCircle()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "Circle";
                return $this->setShape(false);
        }

        function editShapePolygon()
        {
                $this->clearSessionVars();
                $_SESSION["il_map_edit_area_type"] = "Poly";
                return $this->setShape(false);
        }

        function setShape($a_handle = true)
        {
                global $lng, $ilCtrl;
                
                if($a_handle)
                {
                        $this->handleMapParameters();
                }
                if($_POST["areatype2"] != "")
                {
                        $_SESSION["il_map_edit_area_type"] = $_POST["areatype2"];
                }
                if ($_SESSION["il_map_area_nr"] != "")
                {
                        $_POST["area"][0] = $_SESSION["il_map_area_nr"];
                }
                if (!isset($_POST["area"]))
                {
                        ilUtil::sendFailure($lng->txt("no_checkbox"), true);
                        $ilCtrl->redirect($this, "editMapAreas");
                }

                if (count($_POST["area"]) > 1)
                {
                        ilUtil::sendFailure($lng->txt("cont_select_max_one_item"), true);
                        $ilCtrl->redirect($this, "editMapAreas");
                }

                if ($_SESSION["il_map_edit_mode"] != "edit_shape")
                {
                        $_SESSION["il_map_area_nr"] = $_POST["area"][0];
                        $_SESSION["il_map_edit_mode"] = "edit_shape";
                        $_SESSION["il_map_edit_target_script"] = $ilCtrl->getLinkTarget($this, "setShape", "", false, false);
                }


                $area_type = $_SESSION["il_map_edit_area_type"];
                $coords = $_SESSION["il_map_edit_coords"];
                $cnt_coords = ilMapArea::countCoords($coords);

                // decide what to do next
                switch ($area_type)
                {
                        // Rectangle
                        case "Rect" :
                                if ($cnt_coords < 2)
                                {
                                        return $this->editMapArea(true, false, false, "shape", $_POST["area"][0]);
                                }
                                else if ($cnt_coords == 2)
                                {
                                        return $this->saveArea();
                                }
                                break;

                        // Circle
                        case "Circle":
                                if ($cnt_coords <= 1)
                                {
                                        return $this->editMapArea(true, false, false, "shape", $_POST["area"][0]);
                                }
                                else
                                {
                                        if ($cnt_coords == 2)
                                        {
                                                $c = explode(",",$coords);
                                                $coords = $c[0].",".$c[1].",";  // determine radius
                                                $coords .= round(sqrt(pow(abs($c[3]-$c[1]),2)+pow(abs($c[2]-$c[0]),2)));
                                        }
                                        $_SESSION["il_map_edit_coords"] = $coords;

                                        return $this->saveArea();
                                }
                                break;

                        // Polygon
                        case "Poly":
                                if ($cnt_coords < 1)
                                {
                                        return $this->editMapArea(true, false, false, "shape", $_POST["area"][0]);
                                }
                                else if ($cnt_coords < 3)
                                {
                                        return $this->editMapArea(true, true, false, "shape", $_POST["area"][0]);
                                }
                                else
                                {
                                        return $this->editMapArea(true, true, true, "shape", $_POST["area"][0]);
                                }
                                break;
                        
                        // Whole Picture
                        case "WholePicture":
                                return $this->saveArea();
                        }

        }

        function setHighlight()
        {
                global $ilCtrl, $lng;
                
                $st_item = $this->media_object->getMediaItem("Standard");
                $st_item->setHighlightMode(ilUtil::stripSlashes($_POST["highlight_mode"]));
                $st_item->setHighlightClass(ilUtil::stripSlashes($_POST["highlight_class"]));
                $st_item->update();
                
                ilUtil::sendSuccess($lng->txt("msg_obj_modified"), true);
                $ilCtrl->redirect($this, "editMapAreas");
        }
}
?>