https://flixfoxapp.org/js/custom.250805005320.js

1/* JS for preset "Menu V2" */
2(function() {
3	$(function() {
4		$('.menu-wrapper').each(function() {
5			initMenu($(this))
6		});
7	});
8
9	// Make :active pseudo classes work on iOS
10	document.addEventListener("touchstart", function() {}, false);
11
12	const initMenu = function($menuWrapper) {
13		const $body = $('body');
14		const $menu = $('.ed-menu', $menuWrapper);
15		const $menuLinks = $('a', $menu);
16		const $menuTrigger = $('.menu-trigger', $menuWrapper);
17		const $banner = $('.banner').first();
18
19		const smoothScrollOffset = 20;
20		
21		// Set aria attributes
22		$menuTrigger.attr({
23				'aria-expanded': 'false',
24				'aria-controls': $menu.attr('id'),
25		});
26
27		toggleClassOnClick($body.add($menu), $menuTrigger, null, 'open open-menu'); // Keep open on $menu for backward compatibility
28		activateSmoothScroll($menuLinks.add($('.scroll a')), smoothScrollOffset);
29		addClassOnVisibleLinkTargets($menuLinks, 'active', 2 / 3);
30		handleSticky($menuWrapper, 'sticky', $banner);
31	};
32
33	/**
34	 * Observe element's height changes and reload the initMenu() function
35	 *
36	 * @param {HTMLElement} elm Element to observe
37	 * @param {function} callback to call when elmement's height changed
38	 */
39	const observeHeightChange = function(elm, callback) {
40		if (!('ResizeObserver' in window) || elm == null) return;
41
42		const ro = new ResizeObserver(callback);
43		ro.observe(elm);
44	}
45
46	/**
47	 * Toggles class on a target when a trigger is clicked
48	 * 
49	 * @param {jQuery} $target The target to apply the CSS class to
50	 * @param {jQuery} $trigger The Trigger
51	 * @param {jQuery} $closeTrigger Optional close trigger
52	 * @param {string} cssClass CSS Class to toggle on the target
53	 */
54	const toggleClassOnClick = function($target, $trigger, $closeTrigger, cssClass) {
55
56		// Reset in case class "open" was saved accidentally
57		$target.removeClass(cssClass);
58		$trigger.removeClass(cssClass).attr('aria-expanded', 'false');
59
60		// Click on trigger toggles class "open"
61		$trigger.off('.toggle').on('click.toggle', function() {
62			const isExpanded = $(this).attr('aria-expanded') === 'true';
63			$(this).toggleClass(cssClass).attr('aria-expanded', !isExpanded);
64			$target.toggleClass(cssClass);
65		});
66
67		// Close target when link inside is clicked
68		$target.find('a').click(function() {
69			$target.removeClass(cssClass);
70			$trigger.removeClass(cssClass).attr('aria-expanded', 'false');
71		});
72
73		if (!$closeTrigger || !$closeTrigger.length) {
74			return;
75		}
76
77		$closeTrigger.click(function() {
78			$target.removeClass(cssClass);
79			$trigger.removeClass(cssClass).attr('aria-expanded', 'false');
80		});
81	};
82
83	/**
84	 * Smooth scroll to link targets
85	 * 
86	 * @param {jQuery} $scrollLinks The links
87	 * @param {jQuery} scrollOffset Offset to subtract from the scroll target position (e.g. for fixed positioned elements like a menu)
88	 */
89	const activateSmoothScroll = function($scrollLinks, scrollOffset) {
90		if (typeof scrollOffset === 'undefined') {
91			scrollOffset = 0;
92		}
93
94		const determineTarget = function($trigger, hash) {
95			if (hash == '#!next') {
96				return $trigger.closest('.ed-element').next();
97			}
98
99			return $(hash);
100		}
101
102		$scrollLinks.click(function(e) {
103			const $target = determineTarget($(this), this.hash);
104			if (!$target.length) return;
105			e.preventDefault();
106
107			viewport.scrollTo($target, 'top', 500, 0);
108
109		});
110	};
111
112	/**
113	 * We are using the fill property on an element to pass user's choices from CSS to JavaScript
114	 * 
115	 * @param {jQuery} $element
116	 */
117	const getStickyMode = function($element) {
118		const fillValue = getComputedStyle($element[0]).fill;
119
120		return fillValue === 'rgb(255, 0, 0)' ?
121			'sticky_banner' :
122			fillValue === 'rgb(0, 255, 0)' ?
123			'sticky_menu' :
124			fillValue === 'rgb(0, 0, 255)' ?
125			'sticky_instant' :
126			fillValue === 'rgb(255, 255, 255)' ?
127			'sticky_reverse' :
128			'sticky_none';
129	};
130
131	/**
132	 * Adds a class to an element when not currently visible
133	 * 
134	 * @param {jQuery} $element The element to handle stickyness for
135	 * @param {string} cssClass The actual CSS class to be applied to the element when it's above a certain scroll position
136	 * @param {jQuery} $banner A banner to reference the scroll position to
137	 */
138	const handleSticky = function($element, cssClass, $banner) {
139		let triggerPos = 0,
140			offset = 0;
141		let menuWrapperHeight = $element.outerHeight();
142		let mode;
143		let prevScroll = 0;
144		$element.removeClass(cssClass);
145		
146		const toggleSpacer = function(toggle) {
147			document.body.style.setProperty('--spacer-height', toggle ? menuWrapperHeight + 'px' : '');
148		};
149
150		const handleScroll = function() {
151			if (!$element.length || mode === 'sticky_none') return;
152			//if (!$element.length || mode === 'sticky_none' || mode === 'sticky_instant') return;
153
154			const isReverse = mode === 'sticky_reverse',
155				curScroll = viewport.getScrollTop();
156
157			if (triggerPos <= curScroll && (!isReverse || prevScroll > curScroll)) {
158				$element.addClass(cssClass);
159				toggleSpacer(true);
160			} else {
161				$element.removeClass(cssClass);
162				toggleSpacer(false);
163			}
164
165			prevScroll = curScroll;
166		};
167		

168		const updateOffset = function() {
169			mode = getStickyMode($element);
170			menuWrapperHeight = $element.outerHeight();
171			if (!$element.hasClass(cssClass)) {
172				offset = $element.offset().top;
173			}
174			if (mode === 'sticky_banner' && !$banner.length) {
175				mode = 'sticky_menu';
176			}
177			if (mode === 'sticky_banner') {
178				triggerPos = $banner.offset().top + ($banner.length ? $banner.outerHeight() : $element.outerHeight());
179			}
180			if (mode === 'sticky_menu' || mode === 'sticky_reverse') {
181				triggerPos = offset + $element.outerHeight();
182			}
183			if (mode === 'sticky_instant') {
184				triggerPos = offset;
185			}
186			
187			handleScroll();
188		}
189		
190		viewport.observe('resize', updateOffset);
191		viewport.observe('animation.end', updateOffset);
192		observeHeightChange($element[0], updateOffset);
193		updateOffset();
194		
195		viewport.observe('scroll', handleScroll);
196		handleScroll();
197	};
198
199	/**
200	 * Adds a class to links whose target is currently inside the viewport
201	 * 
202	 * @param {jQuery} $links Link(s) to be observed
203	 * @param {string} cssClass CSS Class to be applied
204	 * @param {float} sectionViewportRatio Ratio by which the target should be within the viewport
205	 */
206	const addClassOnVisibleLinkTargets = function($links, cssClass, sectionViewportRatio) {
207		if (typeof sectionViewportRatio === 'undefined') {
208			sectionViewportRatio = 1 / 2;
209		}
210
211		const menuTargets = [];
212		const activeLink = $links.filter('.active');
213
214		const links = $links.filter(function() {
215			const $target = $(this.hash);
216			if (!$target.length) {
217				return false;
218			}
219
220			// Cache offset position to improve performance (update on resize)		
221			const updateOffset = function() {
222				$target.data('offset', $target.offset().top);
223			};
224
225			viewport.observe('resize', updateOffset);
226			viewport.observe('animation.end', updateOffset);
227			updateOffset();
228
229			menuTargets.push($target);
230			return true;
231		});
232
233		// No hash links found, so don't handle it at all
234		if (!links.length) {
235			return;
236		}
237
238		const checkVisibility = function() {
239			$links.removeClass('active');
240
241			// Check section position reversely
242			for (let i = menuTargets.length - 1; i >= 0; i--) {
243				const desiredScrollPosition = menuTargets[i].data('offset') - viewport.getHeight() * (1 - sectionViewportRatio);
244				if (viewport.getScrollTop() >= desiredScrollPosition && menuTargets[i][0].offsetParent !== null) {
245					links.eq(i).addClass(cssClass);
246					return;
247				}
248			}
249
250			// Fallback to originally active item
251			activeLink.addClass(cssClass);
252		};
253
254		viewport.observe('scroll', checkVisibility);
255		checkVisibility();
256	};
257})();
258/* End JS for preset "Menu V2" */