class.ilBlockGUI.php

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<?php
 
/* Copyright (c) 1998-2017 ILIAS open source, Extended GPL, see docs/LICENSE */
 
abstract class ilBlockGUI
{
    abstract public function getBlockType() : string;
 
    abstract protected function isRepositoryObject() : bool;
    
    protected $data = array();
    protected $colspan = 1;
    protected $enablenuminfo = true;
    protected $detail_min = 0;
    protected $detail_max = 0;
    protected $bigmode = false;
    protected $footer_links = array();
    protected $block_id = 0;
    protected $header_commands = array();
    protected $allow_moving = true;
    protected $move = array("left" => false, "right" => false, "up" => false, "down" => false);
    protected $enabledetailrow = true;
    protected $header_links = array();
    protected $footerinfo = false;
    protected $footerinfo_icon = false;
    protected $block_commands = array();
    protected $max_count = false;
    protected $close_command = false;
    protected $image = false;
    protected $property = false;
    protected $nav_value = "";
    protected $css_row = "";
    
    protected $dropdown;
 
    protected $tpl;
 
    protected $main_tpl;
 
    protected $user;
 
    protected $ctrl;
 
    protected $access;
 
    protected $lng;
 
    protected $obj_def;
 
    public function __construct()
    {
        global $DIC;
 
        $this->user = $DIC->user();
        $this->ctrl = $DIC->ctrl();
        $this->access = $DIC->access();
        $this->lng = $DIC->language();
        $this->main_tpl = $DIC["tpl"];
        $this->obj_def = $DIC["objDefinition"];
 
        include_once("./Services/YUI/classes/class.ilYuiUtil.php");
        ilYuiUtil::initConnection();
        $this->main_tpl->addJavaScript("./Services/Block/js/ilblockcallback.js");
 
        $this->setLimit($this->user->getPref("hits_per_page"));
    }
    
    public function addHeaderLink($a_href, $a_text, $status = true)
    {
        $this->header_links[] =
            array('href' => $a_href, 'text' => $a_text, 'status' => (bool) $status);
    }
 
    public function getHeaderLinks()
    {
        return $this->header_links;
    }
 
    public function setData($a_data)
    {
        $this->data = $a_data;
    }
 
    public function getData()
    {
        return $this->data;
    }
 
    public function setBigMode($a_bigmode)
    {
        $this->bigmode = $a_bigmode;
    }
 
    public function getBigMode()
    {
        return $this->bigmode;
    }
 
    public function setBlockId($a_block_id = 0)
    {
        $this->block_id = $a_block_id;
    }
 
    public function getBlockId()
    {
        return $this->block_id;
    }
 
    public function setAvailableDetailLevels($a_max, $a_min = 0)
    {
        $this->detail_min = $a_min;
        $this->detail_max = $a_max;
        $this->handleDetailLevel();
    }
 
    public function setCurrentDetailLevel($a_currentdetaillevel)
    {
        $this->currentdetaillevel = $a_currentdetaillevel;
    }
    
    public function setGuiObject(&$a_gui_object)
    {
        $this->gui_object = $a_gui_object;
    }
 
    public function getGuiObject()
    {
        return $this->gui_object;
    }
 
    public function getCurrentDetailLevel()
    {
        return $this->currentdetaillevel;
    }
 
    public function setTitle($a_title)
    {
        $this->title = $a_title;
    }
 
    public function getTitle()
    {
        return $this->title;
    }
 
    public function setImage($a_image)
    {
        $this->image = $a_image;
    }
 
    public function getImage()
    {
        return $this->image;
    }
 
    public function setOffset($a_offset)
    {
        $this->offset = $a_offset;
    }
 
    public function getOffset()
    {
        return $this->offset;
    }
    
    public function correctOffset()
    {
        if (!($this->offset < $this->max_count)) {
            $this->setOffset(0);
        }
    }
 
    public function setLimit($a_limit)
    {
        $this->limit = $a_limit;
    }
 
    public function getLimit()
    {
        return $this->limit;
    }
 
    public function setEnableEdit($a_enableedit)
    {
        $this->enableedit = $a_enableedit;
    }
 
    public function getEnableEdit()
    {
        return $this->enableedit;
    }
 
    public function setRepositoryMode($a_repositorymode)
    {
        $this->repositorymode = $a_repositorymode;
    }
 
    public function getRepositoryMode()
    {
        return $this->repositorymode;
    }
 
    public function setFooterInfo($a_footerinfo, $a_hide_and_icon = false)
    {
        if ($a_hide_and_icon) {
            $this->footerinfo_icon = $a_footerinfo;
        } else {
            $this->footerinfo = $a_footerinfo;
        }
    }
 
    public function getFooterInfo($a_hide_and_icon = false)
    {
        if ($a_hide_and_icon) {
            return $this->footerinfo_icon;
        } else {
            return $this->footerinfo;
        }
    }
 
    public function setSubtitle($a_subtitle)
    {
        $this->subtitle = $a_subtitle;
    }
 
    public function getSubtitle()
    {
        return $this->subtitle;
    }
 
    public function setRefId($a_refid)
    {
        $this->refid = $a_refid;
    }
 
    public function getRefId()
    {
        return $this->refid;
    }
 
    public function setAdminCommands($a_admincommands)
    {
        $this->admincommands = $a_admincommands;
    }
 
    public function getAdminCommands()
    {
        return $this->admincommands;
    }
 
    public function setColSpan($a_colspan)
    {
        $this->colspan = $a_colspan;
    }
 
    public function getColSpan()
    {
        return $this->colspan;
    }
    
    public function setEnableDetailRow($a_enabledetailrow)
    {
        $this->enabledetailrow = $a_enabledetailrow;
    }
 
    public function getEnableDetailRow()
    {
        return $this->enabledetailrow;
    }
 
 
    public function setEnableNumInfo($a_enablenuminfo)
    {
        $this->enablenuminfo = $a_enablenuminfo;
    }
 
    public function getEnableNumInfo()
    {
        return $this->enablenuminfo;
    }
 
    public function setProperties($a_properties)
    {
        $this->property = $a_properties;
    }
    
    public function getProperty($a_property)
    {
        return $this->property[$a_property];
    }
 
    public function setProperty($a_property, $a_value)
    {
        $this->property[$a_property] = $a_value;
    }
    
    public function setRowTemplate($a_rowtemplatename, $a_rowtemplatedir = "")
    {
        $this->rowtemplatename = $a_rowtemplatename;
        $this->rowtemplatedir = $a_rowtemplatedir;
    }
 
    final public function getNavParameter()
    {
        return $this->getBlockType() . "_" . $this->getBlockId() . "_blnav";
    }
 
    final public function getDetailParameter()
    {
        return $this->getBlockType() . "_" . $this->getBlockId() . "_bldet";
    }
 
    final public function getConfigParameter()
    {
        return $this->getBlockType() . "_" . $this->getBlockId() . "_blconf";
    }
 
    final public function getMoveParameter()
    {
        return $this->getBlockType() . "_" . $this->getBlockId() . "_blmove";
    }
 
    public function getRowTemplateName()
    {
        return $this->rowtemplatename;
    }
 
    public function getRowTemplateDir()
    {
        return $this->rowtemplatedir;
    }
 
    public function addBlockCommand(
        $a_href,
        $a_text,
        $a_target = "",
        $a_img = "",
        $a_right_aligned = false,
        $a_checked = false,
        $a_html = ""
    ) {
        return $this->block_commands[] =
            array("href" => $a_href,
                "text" => $a_text, "target" => $a_target, "img" => $a_img,
                "right" => $a_right_aligned, "checked" => $a_checked, "html" => $a_html);
    }
 
    public function getBlockCommands()
    {
        return $this->block_commands;
    }
    
    public function addHeaderCommand($a_href, $a_text, $a_as_close = false)
    {
        if ($a_as_close) {
            $this->close_command = $a_href;
        } else {
            $this->header_commands[] =
                array("href" => $a_href,
                    "text" => $a_text);
        }
    }
 
    public function getHeaderCommands()
    {
        return $this->header_commands;
    }
    
    public function addFooterLink(
        $a_text,
        $a_href = "",
        $a_onclick = "",
        $a_block_id = "",
        $a_top = false,
        $a_omit_separator = false,
        $a_checked = false
    ) {
        $this->footer_links[] = array(
            "text" => $a_text,
            "href" => $a_href,
            "onclick" => $a_onclick,
            "block_id" => $a_block_id,
            "top" => $a_top,
            "omit_separator" => $a_omit_separator,
            "checked" => $a_checked);
    }
 
    public function getFooterLinks()
    {
        return $this->footer_links;
    }
    
    public function clearFooterLinks()
    {
        $this->footer_links = array();
    }
    
    public static function getScreenMode()
    {
        return IL_SCREEN_SIDE;
    }
    
    public function handleDetailLevel()
    {
        $ilUser = $this->user;
        $ilCtrl = $this->ctrl;
        // set/get detail level
        if ($this->detail_max > $this->detail_min) {
            include_once("Services/Block/classes/class.ilBlockSetting.php");
            if (isset($_GET[$this->getDetailParameter()])) {
                ilBlockSetting::_writeDetailLevel(
                    $this->getBlockType(),
                    $_GET[$this->getDetailParameter()],
                    $ilUser->getId(),
                    $this->block_id
                );
                $this->setCurrentDetailLevel($_GET[$this->getDetailParameter()]);
                if ((int) $_GET[$this->getDetailParameter()] == 0) {
                    $ilCtrl->redirectByClass("ilcolumngui", "");
                }
            } else {
                $this->setCurrentDetailLevel(ilBlockSetting::_lookupDetailLevel(
                    $this->getBlockType(),
                    $ilUser->getId(),
                    $this->block_id
                ));
            }
        }
    }
    
    /*
        function handleConfigStatus()
        {
            $this->config_mode = false;
 
            if ($_GET[$this->getConfigParameter()] == "toggle")
            {
                if ($_SESSION[$this->getConfigParameter()] == "on")
                {
                    $_SESSION[$this->getConfigParameter()] = "off";
                }
                else
                {
                    $_SESSION[$this->getConfigParameter()] = "on";
                }
            }
            if ($_SESSION[$this->getConfigParameter()] == "on")
            {
                $this->config_mode = true;
            }
        }
    */
 
    public function getHTML()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilAccess = $this->access;
        $ilUser = $this->user;
        $objDefinition = $this->obj_def;
        
        if ($this->isRepositoryObject()) {
            if (!$ilAccess->checkAccess("read", "", $this->getRefId())) {
                return "";
            }
        }
        
        $this->tpl = new ilTemplate("tpl.block.html", true, true, "Services/Block");
        
        //              $this->handleConfigStatus();
        
        $this->fillDataSection();
        
        if ($this->getRepositoryMode() && $this->isRepositoryObject()) {
            // #10993
            if ($this->getAdminCommands()) {
                $this->tpl->setCurrentBlock("block_check");
                $this->tpl->setVariable("BL_REF_ID", $this->getRefId());
                $this->tpl->parseCurrentBlock();
            }
            
            if ($ilAccess->checkAccess("delete", "", $this->getRefId())) {
                $this->addBlockCommand(
                    "ilias.php?baseClass=ilRepositoryGUI&ref_id=" . $_GET["ref_id"] . "&cmd=delete" .
                    "&item_ref_id=" . $this->getRefId(),
                    $lng->txt("delete")
                );
                                
                // see ilObjectListGUI::insertCutCommand();
                $this->addBlockCommand(
                    "ilias.php?baseClass=ilRepositoryGUI&ref_id=" . $_GET["ref_id"] . "&cmd=cut" .
                    "&item_ref_id=" . $this->getRefId(),
                    $lng->txt("move")
                );
            }
                    
            // #14595 - see ilObjectListGUI::insertCopyCommand()
            if ($ilAccess->checkAccess("copy", "", $this->getRefId())) {
                $parent_type = ilObject::_lookupType($_GET["ref_id"], true);
                $parent_gui = "ilObj" . $objDefinition->getClassName($parent_type) . "GUI";
            
                $ilCtrl->setParameterByClass("ilobjectcopygui", "source_id", $this->getRefId());
                $copy_cmd = $ilCtrl->getLinkTargetByClass(
                    array("ilrepositorygui", $parent_gui, "ilobjectcopygui"),
                    "initTargetSelection"
                );
 
                // see ilObjectListGUI::insertCopyCommand();
                $this->addBlockCommand(
                    $copy_cmd,
                    $lng->txt("copy")
                );
            }
        }
 
        // footer info
        if ($this->getFooterInfo() != "") {
            $this->tpl->setCurrentBlock("footer_information");
            $this->tpl->setVariable("FOOTER_INFO", $this->getFooterInfo());
            $this->tpl->setVariable("FICOLSPAN", $this->getColSpan());
            $this->tpl->parseCurrentBlock();
        }
        
        $this->dropdown = array();
        
        // commands
        if (count($this->getBlockCommands()) > 0) {
            $has_block_command = false;
            
            foreach ($this->getBlockCommands() as $command) {
                if (!$command["img"] && !$command["html"]) {
                    $this->dropdown[] = $command;
                    continue;
                }
                
                $has_block_command = true;
                
                if ($command["target"] != "") {
                    $this->tpl->setCurrentBlock("bc_target");
                    $this->tpl->setVariable("CMD_TARGET", $command["target"]);
                    $this->tpl->parseCurrentBlock();
                }
 
                if ($command["img"] != "") {
                    $this->tpl->setCurrentBlock("bc_image");
                    $this->tpl->setVariable("SRC_BC", $command["img"]);
                    $this->tpl->setVariable("ALT_BC", $command["text"]);
                    $this->tpl->parseCurrentBlock();
                    $this->tpl->setCurrentBlock("block_command");
                } elseif ($command["html"] != "") {
                    if ($command['href'] !== '') {
                        $this->tpl->setCurrentBlock("bc_html");
                        $this->tpl->setVariable("HTML", $command["html"]);
                        $this->tpl->parseCurrentBlock();
                        $this->tpl->setCurrentBlock("block_command");
                    } else {
                        $this->tpl->setCurrentBlock('bc_html_nohref');
                        $this->tpl->setVariable('HTML_NOHREF', $command['html']);
                        $this->tpl->parseCurrentBlock();
                        $this->tpl->setCurrentBlock("block_command");
                    }
                } else {
                    $this->tpl->setCurrentBlock("block_command");
                    $this->tpl->setVariable("CMD_TEXT", $command["text"]);
                    $this->tpl->setVariable("BC_CLASS", 'class="il_ContainerItemCommand"');
                }
 
                if ($command['href'] !== '') {
                    $this->tpl->setVariable("CMD_HREF", $command["href"]);
                }
                $this->tpl->parseCurrentBlock();
            }
            
            if ($has_block_command) {
                $this->tpl->setCurrentBlock("block_commands");
                $this->tpl->setVariable("CCOLSPAN", $this->getColSpan());
                $this->tpl->parseCurrentBlock();
            }
        }
        
        // fill previous next
        $this->fillPreviousNext();
 
        // fill footer
        $this->fillFooter();
        
        // fill row for setting details
        $this->fillDetailRow();
 
        // header links
        if (count($this->getHeaderLinks())) {
            $counter = 0;
            foreach ($this->getHeaderLinks() as $command) {
                if ($counter > 0) {
                    $this->tpl->setCurrentBlock('head_delim');
                    $this->tpl->touchBlock('head_delim');
                    $this->tpl->parseCurrentBlock();
                }
                if ($command['status'] == true) {
                    $this->tpl->setCurrentBlock('head_link');
                    $this->tpl->setVariable('HHREF', $command['href']);
                    $this->tpl->setVariable('HLINK', $command['text']);
                    $this->tpl->parseCurrentBlock();
                } else {
                    $this->tpl->setCurrentBlock('head_text');
                    $this->tpl->setVariable('HTEXT', $command['text']);
                    $this->tpl->parseCurrentBlock();
                }
                
                $this->tpl->setCurrentBlock('head_item');
                $this->tpl->parseCurrentBlock();
                
                ++$counter;
            }
            
            $this->tpl->setCurrentBlock('header_links');
            $this->tpl->parseCurrentBlock();
        }
        
        // for screen readers we first output the title and the commands
        // (e.g. close icon afterwards), otherwise we first output the
        // header commands, since we want to have the close icon top right
        // and not floated after the title
        if (is_object($ilUser) && $ilUser->getPref("screen_reader_optimization")) {
            $this->fillHeaderTitleBlock();
            $this->fillHeaderCommands();
        } else {
            $this->fillHeaderCommands();
            $this->fillHeaderTitleBlock();
        }
            
        $this->tpl->setVariable("COLSPAN", $this->getColSpan());
        if ($this->getBigMode()) {
            $this->tpl->touchBlock("hclassb");
        } else {
            $this->tpl->touchBlock("hclass");
        }
 
        if ($ilCtrl->isAsynch()) {
            // return without div wrapper
            echo $this->tpl->getAsynch();
        } else {
            // return incl. wrapping div with id
            return '<div id="' . "block_" . $this->getBlockType() . "_" . $this->block_id . '">' .
                $this->tpl->get() . '</div>';
        }
    }
    
    public function fillHeaderCommands()
    {
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;
 
        
        // header commands
        if (count($this->getHeaderCommands()) > 0 ||
            ($this->detail_max > $this->detail_min && $this->detail_min == 0) ||
            $this->close_command != "") {
            foreach ($this->getHeaderCommands() as $command) {
                $this->tpl->setCurrentBlock("header_command");
                $this->tpl->setVariable("HREF_HCOMM", $command["href"]);
                $this->tpl->setVariable("TXT_HCOMM", $command["text"]);
                $this->tpl->parseCurrentBlock();
            }
 
            // close button
            if (($this->detail_max > $this->detail_min && $this->detail_min == 0 &&
                !$this->getRepositoryMode())
                ||
                $this->close_command != "") {
                $alt = $lng->txt("hide");
                if ($this->close_command != "") {
                    $url = $this->close_command;
                } else {
                    $ilCtrl->setParameterByClass(
                        "ilcolumngui",
                        $this->getDetailParameter(),
                        "0"
                    );
                    $url = $ilCtrl->getLinkTargetByClass("ilcolumngui", "");
                    $ilCtrl->setParameterByClass(
                        "ilcolumngui",
                        $this->getDetailParameter(),
                        ""
                    );
                }
                
                $this->dropdown[] = array("text" => $alt,
                    "image" => $img,
                    "href" => $url);
            }
            
            $this->tpl->setCurrentBlock("header_commands");
            $this->tpl->parseCurrentBlock();
        }
 
        // adv selection gui
        include_once "Services/UIComponent/AdvancedSelectionList/classes/class.ilAdvancedSelectionListGUI.php";
        $dropdown = new ilAdvancedSelectionListGUI();
        $dropdown->setUseImages(true);
        $dropdown->setStyle(ilAdvancedSelectionListGUI::STYLE_LINK_BUTTON);
        $dropdown->setHeaderIcon(ilAdvancedSelectionListGUI::ICON_CONFIG);
        $dropdown->setId("block_dd_" . $this->getBlockType() . "_" . $this->block_id);
        foreach ($this->dropdown as $item) {
            if ($item["href"] || $item["onclick"]) {
                if ($item["checked"]) {
                    $item["image"] = ilUtil::getImagePath("icon_checked.svg");
                }
                $dropdown->addItem(
                    $item["text"],
                    "",
                    $item["href"],
                    $item["image"],
                    $item["text"],
                    "",
                    "",
                    false,
                    $item["onclick"]
                );
            }
        }
        $dropdown = $dropdown->getHTML();
        $this->tpl->setCurrentBlock("header_dropdown");
        $this->tpl->setVariable("ADV_DROPDOWN", $dropdown);
        $this->tpl->parseCurrentBlock();
 
        $this->tpl->setCurrentBlock("hitem");
        $this->tpl->parseCurrentBlock();
    }
    
    
    public function fillHeaderTitleBlock()
    {
        $lng = $this->lng;
        
        // image
        if ($this->getImage() != "") {
            $this->tpl->setCurrentBlock("block_img");
            $this->tpl->setVariable("IMG_BLOCK", $this->getImage());
            $this->tpl->setVariable(
                "IMID",
                "block_" . $this->getBlockType() . "_" . $this->block_id
            );
            $this->tpl->setVariable(
                "IMG_ALT",
                str_replace(array("'",'"'), "", strip_tags($lng->txt("icon") . " " . $this->getTitle()))
            );
            $this->tpl->parseCurrentBlock();
        }
 
        // header title
        $this->tpl->setCurrentBlock("header_title");
        $this->tpl->setVariable(
            "BTID",
            "block_" . $this->getBlockType() . "_" . $this->block_id
        );
        $this->tpl->setVariable(
            "BLOCK_TITLE",
            $this->getTitle()
        );
        $this->tpl->setVariable(
            "TXT_BLOCK",
            $lng->txt("block")
        );
        $this->tpl->parseCurrentBlock();
            
        $this->tpl->setCurrentBlock("hitem");
        $this->tpl->parseCurrentBlock();
    }
    
    
    public function setDataSection($a_content)
    {
        $this->tpl->setCurrentBlock("data_section");
        $this->tpl->setVariable("DATA", $a_content);
        $this->tpl->parseCurrentBlock();
        $this->tpl->setVariable("BLOCK_ROW", "");
    }
    
    public function fillDataSection()
    {
        $this->nav_value = (isset($_POST[$this->getNavParameter()]) && $_POST[$this->getNavParameter()] != "")
            ? $_POST[$this->getNavParameter()]
            : (isset($_GET[$this->getNavParameter()]) ? $_GET[$this->getNavParameter()] : $this->nav_value);
        $this->nav_value = ($this->nav_value == "" && isset($_SESSION[$this->getNavParameter()]))
            ? $_SESSION[$this->getNavParameter()]
            : $this->nav_value;
            
        $_SESSION[$this->getNavParameter()] = $this->nav_value;
            
        $nav = explode(":", $this->nav_value);
        if (isset($nav[2])) {
            $this->setOffset($nav[2]);
        } else {
            $this->setOffset(0);
        }
        
        // data
        $this->tpl->addBlockFile(
            "BLOCK_ROW",
            "block_row",
            $this->getRowTemplateName(),
            $this->getRowTemplateDir()
        );
            
        $data = $this->getData();
        $this->max_count = count($data);
        $this->correctOffset();
        $data = array_slice($data, $this->getOffset(), $this->getLimit());
        
        $this->preloadData($data);
        
        foreach ($data as $record) {
            $this->tpl->setCurrentBlock("block_row");
            $this->fillRowColor();
            $this->fillRow($record);
            $this->tpl->setCurrentBlock("block_row");
            $this->tpl->parseCurrentBlock();
        }
    }
    
    public function fillRow($a_set)
    {
        foreach ($a_set as $key => $value) {
            $this->tpl->setVariable("VAL_" . strtoupper($key), $value);
        }
    }
    
    public function fillFooter()
    {
    }
    
    final protected function fillRowColor($a_placeholder = "CSS_ROW")
    {
        $this->css_row = ($this->css_row != "ilBlockRow1")
            ? "ilBlockRow1"
            : "ilBlockRow2";
        $this->tpl->setVariable($a_placeholder, $this->css_row);
    }
 
    public function fillPreviousNext()
    {
        $lng = $this->lng;
 
        // table pn numinfo
        $numinfo = "";
        if ($this->getEnableNumInfo() && $this->max_count > 0) {
            $start = $this->getOffset() + 1;                            // compute num info
            $end = $this->getOffset() + $this->getLimit();
                
            if ($end > $this->max_count or $this->getLimit() == 0) {
                $end = $this->max_count;
            }
                
            $numinfo = "(" . $start . "-" . $end . " " . strtolower($lng->txt("of")) . " " . $this->max_count . ")";
        }
 
        $this->setPreviousNextLinks();
        $this->fillFooterLinks(true, $numinfo);
    }
 
    public function setPreviousNextLinks()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        
        // if more entries then entries per page -> show link bar
        if ($this->max_count > $this->getLimit() && ($this->getLimit() != 0)) {
            // previous link
            if ($this->getOffset() >= 1) {
                $prevoffset = $this->getOffset() - $this->getLimit();
                
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    $this->getNavParameter(),
                    "::" . $prevoffset
                );
                
                // ajax link
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    "block_id",
                    "block_" . $this->getBlockType() . "_" . $this->block_id
                );
                $block_id = "block_" . $this->getBlockType() . "_" . $this->block_id;
                $onclick = $ilCtrl->getLinkTargetByClass(
                    "ilcolumngui",
                    "updateBlock",
                    "",
                    true
                );
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    "block_id",
                    ""
                );
                    
                // normal link
                $href = $ilCtrl->getLinkTargetByClass("ilcolumngui", "");
                $text = $lng->txt("previous");
                
                $this->addFooterLink($text, $href, $onclick, $block_id, true);
            }
 
            // calculate number of pages
            $pages = intval($this->max_count / $this->getLimit());
 
            // add a page if a rest remains
            if (($this->max_count % $this->getLimit())) {
                $pages++;
            }
 
            // show next link (if not last page)
            if (!(($this->getOffset() / $this->getLimit()) == ($pages - 1)) && ($pages != 1)) {
                $newoffset = $this->getOffset() + $this->getLimit();
 
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    $this->getNavParameter(),
                    "::" . $newoffset
                );
 
                // ajax link
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    "block_id",
                    "block_" . $this->getBlockType() . "_" . $this->block_id
                );
                //$this->tpl->setCurrentBlock("pnonclick");
                $block_id = "block_" . $this->getBlockType() . "_" . $this->block_id;
                $onclick = $ilCtrl->getLinkTargetByClass(
                    "ilcolumngui",
                    "updateBlock",
                    "",
                    true
                );
                //echo "-".$onclick."-";
                //$this->tpl->parseCurrentBlock();
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    "block_id",
                    ""
                );
 
                // normal link
                $href = $ilCtrl->getLinkTargetByClass("ilcolumngui", "");
                $text = $lng->txt("next");
 
                $this->addFooterLink($text, $href, $onclick, $block_id, true);
            }
            $ilCtrl->setParameterByClass(
                "ilcolumngui",
                $this->getNavParameter(),
                ""
            );
            return true;
        } else {
            return false;
        }
    }
 
    public function fillFooterLinks($a_top = false, $a_numinfo = "")
    {
        $first = true;
        $flinks = $this->getFooterLinks();
        
        $prefix = ($a_top) ? "top" : "foot";
        
        $has_link = false;
 
        $omit_separator = false;
        foreach ($flinks as $flink) {
            if ($flink["top"] != $a_top) {
                continue;
            }
            
            if (!$a_top) {
                if ($flink["onclick"]) {
                    $flink["onclick"] = "ilBlockJSHandler('" . $flink["block_id"] .
                        "','" . $flink["onclick"] . "')";
                }
                $this->dropdown[] = $flink;
                continue;
            }
            
            $has_link = true;
            
            if (!$first && !$omit_separator) {
                $this->tpl->touchBlock($prefix . "_delim");
                $this->tpl->touchBlock($prefix . "_item");
            }
 
            // ajax link
            if ($flink["onclick"] != "") {
                $this->tpl->setCurrentBlock($prefix . "_onclick");
                $this->tpl->setVariable(
                    "OC_BLOCK_ID",
                    $flink["block_id"]
                );
                $this->tpl->setVariable(
                    "OC_HREF",
                    $flink["onclick"]
                );
                $this->tpl->parseCurrentBlock();
            }
            
            // normal link
            if ($flink["href"] != "") {
                // normal link
                $this->tpl->setCurrentBlock($prefix . "_link");
                $this->tpl->setVariable(
                    "FHREF",
                    $flink["href"]
                );
                $this->tpl->setVariable("FLINK", $flink["text"]);
                $this->tpl->parseCurrentBlock();
                $this->tpl->touchBlock($prefix . "_item");
            } else {
                $this->tpl->setCurrentBlock($prefix . "_text");
                $this->tpl->setVariable("FTEXT", $flink["text"]);
                $this->tpl->parseCurrentBlock();
                $this->tpl->touchBlock($prefix . "_item");
            }
                 
            $first = false;
            $omit_separator = $flink["omit_separator"];
        }
 
        if ($a_numinfo != "" && $has_link) {
            $this->tpl->setVariable("NUMINFO", $a_numinfo);
            $first = false;
        }
 
        /*
        if (!$first)
        {
            $this->tpl->setVariable("PCOLSPAN", $this->getColSpan());
            $this->tpl->setCurrentBlock($prefix."_row");
            $this->tpl->parseCurrentBlock();
        }
        */
    }
 
    public function fillDetailRow()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
 
        if ($this->enabledetailrow == false) {
            return;
        }
        
        $start = ($this->detail_min < 1)
            ? $start = 1
            : $this->detail_min;
        
        $end = ($this->detail_max < $this->detail_min)
            ? $this->detail_min
            : $this->detail_max;
        
        $settings = array();
        for ($i = $start; $i <= $end; $i++) {
            $settings[] = $i;
        }
        
        if ($end > $start) {
            foreach ($settings as $i) {
                if (($i > $start && $i > 1)) {
                    //$this->tpl->touchBlock("det_delim");
                    //$this->tpl->touchBlock("det_item");
                }
                //                              if ($i != $this->getCurrentDetailLevel())
                //                              {
                $ilCtrl->setParameterByClass(
                    "ilcolumngui",
                    $this->getDetailParameter(),
                    $i
                );
 
                $onclick = $onclick_id = "";
                    
                // ajax link
                if ($i > 0) {
                    $ilCtrl->setParameterByClass(
                        "ilcolumngui",
                        "block_id",
                        "block_" . $this->getBlockType() . "_" . $this->block_id
                    );
                    $onclick = $ilCtrl->getLinkTargetByClass(
                        "ilcolumngui",
                        "updateBlock",
                        "",
                        true
                    );
                    $onclick_id = "block_" . $this->getBlockType() . "_" . $this->block_id;
                    $ilCtrl->setParameterByClass(
                        "ilcolumngui",
                        "block_id",
                        ""
                    );
                }
                                                                                    
                // normal link
                //$icon = ilUtil::getImagePath("details".$i.".svg");
                $text = $lng->txt("details") . " " . $i;
                $url = $ilCtrl->getLinkTargetByClass("ilcolumngui", "");
                    
                if ($onclick) {
                    $onclick = "ilBlockJSHandler('" . $onclick_id . "','" . $onclick . "')";
                }
                    
                $checked = ($i == $this->getCurrentDetailLevel());
                $this->dropdown[] = array("text" => $text,
                        "image" => $icon,
                        "href" => $url,
                        "onclick" => $onclick,
                        "checked" => $checked);
                //                              }
            }
            
            // info + icon in detail row
            if ($this->getFooterInfo(true) != "") {
                $this->tpl->setCurrentBlock("det_info");
                $this->tpl->setVariable("INFO_TEXT", $this->getFooterInfo(true));
                $this->tpl->setVariable("ALT_DET_INFO", $lng->txt("info_short"));
                $this->tpl->setVariable("DI_BLOCK_ID", $this->getBlockType() . "_" . $this->getBlockId());
                $this->tpl->setVariable("IMG_DET_INFO", ilUtil::getImagePath("icon_info.svg"));
                $this->tpl->parseCurrentBlock();
            }
            
            /*
            $this->tpl->setCurrentBlock("detail_setting");
            $this->tpl->setVariable("TXT_DETAILS", $lng->txt("details"));
            $this->tpl->setVariable("DCOLSPAN", $this->getColSpan());
            $this->tpl->parseCurrentBlock();
            */
            
            $ilCtrl->setParameterByClass(
                "ilcolumngui",
                $this->getDetailParameter(),
                ""
            );
        }
    }
 
    protected function preloadData(array $data)
    {
    }
}