/**
     * this function return all blocks from type my_title on the
     * current page.
     * @return array
     */
    public function getPageTitles()
    {
        // get and check current page
        $currentPage = Page::getCurrentPage();
        if (!is_object($currentPage)) {
            return array();
        }
 
        $titleBlocks = [];
        $areaList = \Area::getListOnPage($currentPage);
        foreach($areaList as $area) {
            $areaBlocks = $area->getAreaBlocksArray($currentPage);
            foreach($areaBlocks as $areaBlock) {
                if ($areaBlock->btHandle != 'my_title') {
                    continue;
                }
 
                // get the block controller
                $controller = $areaBlock->getInstance();
 
                // create dummy xml container
                $xmlContainer = new \SimpleXMLElement("<export></export>");
 
                // get the data from the block
                $controller->export($xmlContainer);
 
                // check if the title can displayed in the anchor list
                if ((string)$xmlContainer->data->record->anchorCheckbox != '1') {
                    continue;
                }
 
                // empty title tags are skipped
                if ((string)$xmlContainer->data->record->titleText == '') {
                    continue;
                }
 
                // add title to result array
                $titleBlocks[$areaBlock->bID] = (string)$xmlContainer->data->record->titleText;
            }
        }
 
        return $titleBlocks;
    }