in ui/js/core.js [105:118]
Metis.boxFullScreen = function () {
if (window.screenfull !== undefined && screenfull.enabled) {
$('.full-box').on(Metis.buttonPressedEvent, function (e) {
var $toggledPanel = $(this).parents('.box')[0];
screenfull.toggle($toggledPanel);
$(this).parents('.box').toggleClass('full-screen-box');
$(this).parents('.box').children('.body').toggleClass('full-screen-box');
$(this).children('i').toggleClass('fa-compress');
e.preventDefault();
});
} else {
$('.full-box').addClass('hidden');
}
};