/**
* Insert page toc
*
* @param string output
* @return string output
*/
function insertPageToc($a_output)
{
global $lng;
include_once "./Services/Utilities/classes/class.ilStr.php";
// extract all headings
$offsets = ilStr::strPosAll($a_output, "ilPageTocH");
$page_heads = array();
foreach ($offsets as $os) {
$level = (int) substr($a_output, $os + 10, 1);
if (in_array($level, array(1, 2, 3))) {
$anchor = str_replace("TocH", "TocA", substr($a_output, $os, strpos($a_output, "<", $os) - $os - 3));
// get heading
$tag_start = stripos($a_output, "<h" . $level . " ", $os);
$tag_end = stripos($a_output, "</h" . $level . ">", $tag_start);
$head = substr($a_output, $tag_start, $tag_end - $tag_start);
// get headings text
$text_start = stripos($head, ">") + 1;
$text_end = strripos($head, "<!--", $text_start);
$text = substr($head, $text_start, $text_end - $text_start);
$page_heads[] = array("level" => $level, "text" => $text, "anchor" => $anchor);
}
}
if (count($page_heads) > 1) {
include_once "./Services/UIComponent/NestedList/classes/class.ilNestedList.php";
$list = new ilNestedList();
$list->setAutoNumbering(true);
$list->setListClass("ilc_page_toc_PageTOCList");
$list->setItemClass("ilc_page_toc_PageTOCItem");
$i = 0;
$c_depth = 1;
$c_par[1] = 0;
$c_par[2] = 0;
$nr[1] = 1;
$nr[2] = 1;
$nr[3] = 1;
foreach ($page_heads as $ind => $h) {
$i++;
$par = 0;
// check if we have a parent for one level up
$par = 0;
if ($h["level"] == 2 && $c_par[1] > 0) {
$par = $c_par[1];
}
if ($h["level"] == 3 && $c_par[2] > 0) {
$par = $c_par[2];
}
$h["text"] = str_replace("<!--PageTocPH-->", "", $h["text"]);
// add the list node
$list->addListNode("<a href='#" . $h["anchor"] . "' class='ilc_page_toc_PageTOCLink'>" . $h["text"] . "</a>", $i, $par);
// set the node as current parent of the level
if ($h["level"] == 1) {
$c_par[1] = $i;
$c_par[2] = 0;
}
if ($h["level"] == 2) {
$c_par[2] = $i;
}
}
$tpl = new ilTemplate("tpl.page_toc.html", true, true, "Services/COPage");
$tpl->setVariable("PAGE_TOC", $list->getHTML());
$tpl->setVariable("TXT_PAGE_TOC", $lng->txt("cont_page_toc"));
$tpl->setVariable("TXT_HIDE", $lng->txt("hide"));
$tpl->setVariable("TXT_SHOW", $lng->txt("show"));
$a_output = str_replace("{{{{{PageTOC}}}}}", $tpl->get(), $a_output);
$numbers = $list->getNumbers();
if (count($numbers) > 0) {
include_once "./Services/Utilities/classes/class.ilStr.php";
foreach ($numbers as $n) {
$a_output = ilStr::replaceFirsOccurence("<!--PageTocPH-->", $n . " ", $a_output);
}
}
} else {
$a_output = str_replace("{{{{{PageTOC}}}}}", "", $a_output);
}
return $a_output;
}