function getSearchTerm() {
	var sPageURL = window.location.search.substring(1);
	var sURLVariables = sPageURL.split('&');
	for (var i = 0; i < sURLVariables.length; i++) {
		var sParameterName = sURLVariables[i].split('=');
		if (sParameterName[0] == 'q') {
			return sParameterName[1];
		}
	}
}

function applyTopPadding() {
	// Update various absolute positions to match where the main container
	// starts. This is necessary for handling multi-line nav headers, since
	// that pushes the main container down.
	var offset = $('body > .container').offset();
	$('html').css('scroll-padding-top', offset.top + 'px');
	$('.bs-sidebar.affix').css('top', offset.top + 'px');
}

$(document).ready(function () {
	applyTopPadding();

	var search_term = getSearchTerm(),
		$search_modal = $('#mkdocs_search_modal'),
		$keyboard_modal = $('#mkdocs_keyboard_modal');

	if (search_term) {
		$search_modal.modal();
	}

	// make sure search input gets autofocus everytime modal opens.
	$search_modal.on('shown.bs.modal', function () {
		$search_modal.find('#mkdocs-search-query').focus();
	});

	// Close search modal when result is selected
	// The links get added later so listen to parent
	$('#mkdocs-search-results').click(function (e) {
		if ($(e.target).is('a')) {
			$search_modal.modal('hide');
		}
	});

	// Populate keyboard modal with proper Keys
	$keyboard_modal.find('.help.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.help];
	$keyboard_modal.find('.prev.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.previous];
	$keyboard_modal.find('.next.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.next];
	$keyboard_modal.find('.search.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.search];

	// Keyboard navigation
	document.addEventListener('keydown', function (e) {
		if ($(e.target).is(':input')) return true;
		var key = e.which || e.keyCode || (window.event && window.event.keyCode);
		var page;
		switch (key) {
			case shortcuts.next:
				page = $('.navbar a[rel="next"]:first').prop('href');
				break;
			case shortcuts.previous:
				page = $('.navbar a[rel="prev"]:first').prop('href');
				break;
			case shortcuts.search:
				e.preventDefault();
				$keyboard_modal.modal('hide');
				$search_modal.modal('show');
				$search_modal.find('#mkdocs-search-query').focus();
				break;
			case shortcuts.help:
				$search_modal.modal('hide');
				$keyboard_modal.modal('show');
				break;
			default:
				break;
		}
		if (page) {
			$keyboard_modal.modal('hide');
			window.location.href = page;
		}
	});

	$('table').addClass('table table-striped table-hover');

	// Improve the scrollspy behaviour when users click on a TOC item.
	$('.bs-sidenav a').on('click', function () {
		var clicked = this;
		setTimeout(function () {
			var active = $('.nav li.active a');
			active = active[active.length - 1];
			if (clicked !== active) {
				$(active).parent().removeClass('active');
				$(clicked).parent().addClass('active');
			}
		}, 50);
	});

	function showInnerDropdown(item) {
		var popup = $(item).next('.dropdown-menu');
		popup.addClass('show');
		$(item).addClass('open');

		// First, close any sibling dropdowns.
		var container = $(item).parent().parent();
		container.find('> .dropdown-submenu > a').each(function (i, el) {
			if (el !== item) {
				hideInnerDropdown(el);
			}
		});

		var popupMargin = 10;
		var maxBottom = $(window).height() - popupMargin;
		var bounds = item.getBoundingClientRect();

		popup.css('left', bounds.right + 'px');
		if (bounds.top + popup.height() > maxBottom && bounds.top > $(window).height() / 2) {
			popup.css({
				top: bounds.bottom - popup.height() + 'px',
				'max-height': bounds.bottom - popupMargin + 'px',
			});
		} else {
			popup.css({
				top: bounds.top + 'px',
				'max-height': maxBottom - bounds.top + 'px',
			});
		}
	}

	function hideInnerDropdown(item) {
		var popup = $(item).next('.dropdown-menu');
		popup.removeClass('show');
		$(item).removeClass('open');

		popup.scrollTop(0);
		popup.find('.dropdown-menu').scrollTop(0).removeClass('show');
		popup.find('.dropdown-submenu > a').removeClass('open');
	}

	$('.dropdown-submenu > a').on('click', function (e) {
		if ($(this).next('.dropdown-menu').hasClass('show')) {
			hideInnerDropdown(this);
		} else {
			showInnerDropdown(this);
		}

		e.stopPropagation();
		e.preventDefault();
	});

	$('.dropdown-menu')
		.parent()
		.on('hide.bs.dropdown', function (e) {
			$(this).find('.dropdown-menu').scrollTop(0);
			$(this).find('.dropdown-submenu > a').removeClass('open');
			$(this).find('.dropdown-menu .dropdown-menu').removeClass('show');
		});
});

$(window).on('resize', applyTopPadding);

$('body').scrollspy({
	target: '.bs-sidebar',
	offset: 100,
});

/* Prevent disabled links from causing a page reload */
$('li.disabled a').click(function () {
	event.preventDefault();
});

// See https://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes
// We only list common keys below. Obscure keys are omitted and their use is discouraged.
var keyCodes = {
	8: 'backspace',
	9: 'tab',
	13: 'enter',
	16: 'shift',
	17: 'ctrl',
	18: 'alt',
	19: 'pause/break',
	20: 'caps lock',
	27: 'escape',
	32: 'spacebar',
	33: 'page up',
	34: 'page down',
	35: 'end',
	36: 'home',
	37: '&larr;',
	38: '&uarr;',
	39: '&rarr;',
	40: '&darr;',
	45: 'insert',
	46: 'delete',
	48: '0',
	49: '1',
	50: '2',
	51: '3',
	52: '4',
	53: '5',
	54: '6',
	55: '7',
	56: '8',
	57: '9',
	65: 'a',
	66: 'b',
	67: 'c',
	68: 'd',
	69: 'e',
	70: 'f',
	71: 'g',
	72: 'h',
	73: 'i',
	74: 'j',
	75: 'k',
	76: 'l',
	77: 'm',
	78: 'n',
	79: 'o',
	80: 'p',
	81: 'q',
	82: 'r',
	83: 's',
	84: 't',
	85: 'u',
	86: 'v',
	87: 'w',
	88: 'x',
	89: 'y',
	90: 'z',
	91: 'Left Windows Key / Left ⌘',
	92: 'Right Windows Key',
	93: 'Windows Menu / Right ⌘',
	96: 'numpad 0',
	97: 'numpad 1',
	98: 'numpad 2',
	99: 'numpad 3',
	100: 'numpad 4',
	101: 'numpad 5',
	102: 'numpad 6',
	103: 'numpad 7',
	104: 'numpad 8',
	105: 'numpad 9',
	106: 'multiply',
	107: 'add',
	109: 'subtract',
	110: 'decimal point',
	111: 'divide',
	112: 'f1',
	113: 'f2',
	114: 'f3',
	115: 'f4',
	116: 'f5',
	117: 'f6',
	118: 'f7',
	119: 'f8',
	120: 'f9',
	121: 'f10',
	122: 'f11',
	123: 'f12',
	124: 'f13',
	125: 'f14',
	126: 'f15',
	127: 'f16',
	128: 'f17',
	129: 'f18',
	130: 'f19',
	131: 'f20',
	132: 'f21',
	133: 'f22',
	134: 'f23',
	135: 'f24',
	144: 'num lock',
	145: 'scroll lock',
	186: '&semi;',
	187: '&equals;',
	188: '&comma;',
	189: '&hyphen;',
	190: '&period;',
	191: '&quest;',
	192: '&grave;',
	219: '&lsqb;',
	220: '&bsol;',
	221: '&rsqb;',
	222: '&apos;',
};