/**
* Initializes the preview and loads the needed javascripts and styles.
*/
private static function initPreview()
{
if (self::$initialized) {
return;
}
global $tpl, $lng, $ilCtrl;
// jquery
include_once "./Services/jQuery/classes/class.iljQueryUtil.php";
iljQueryUtil::initjQuery();
// load qtip
include_once "./Services/UIComponent/Tooltip/classes/class.ilTooltipGUI.php";
ilTooltipGUI::initLibrary();
// needed scripts & styles
$tpl->addJavaScript("./Services/Preview/js/jquery.mousewheel.js");
$tpl->addJavaScript("./Services/Preview/js/ilPreview.js");
$tpl->addCss(ilUtil::getStyleSheetLocation("filesystem", "preview.css", "Services/Preview"));
// create loading template
$tmpl = new ilTemplate("tpl.preview.html", true, true, "Services/Preview");
$tmpl->setCurrentBlock("no_preview");
$tmpl->setVariable("TXT_NO_PREVIEW", "%%0%%");
$tmpl->parseCurrentBlock();
$initialHtml = str_replace(array("\r\n", "\r"), "\n", $tmpl->get());
$lines = explode("\n", $initialHtml);
$new_lines = array();
foreach ($lines as $i => $line) {
if (!empty($line)) {
$new_lines[] = trim($line);
}
}
$initialHtml = implode($new_lines);
// add default texts and values
include_once "./Services/JSON/classes/class.ilJsonUtil.php";
$tpl->addOnLoadCode("il.Preview.texts.preview = \"" . self::jsonSafeString($lng->txt("preview")) . "\";");
$tpl->addOnLoadCode("il.Preview.texts.showPreview = \"" . self::jsonSafeString($lng->txt("preview_show")) . "\";");
$tpl->addOnLoadCode("il.Preview.texts.close = \"" . self::jsonSafeString($lng->txt("close")) . "\";");
$tpl->addOnLoadCode("il.Preview.previewSize = " . ilPreviewSettings::getImageSize() . ";");
$tpl->addOnLoadCode("il.Preview.initialHtml = " . ilJsonUtil::encode($initialHtml) . ";");
$tpl->addOnLoadCode("il.Preview.highlightClass = \"ilContainerListItemOuterHighlight\";");
$tpl->addOnLoadCode("il.Preview.init();");
self::$initialized = true;
}
/**
* Gets the size of the preview images in pixels.
*
* @return int The current value
*/
protected final function getImageSize()
{
return ilPreviewSettings::getImageSize();
}