https://www.fiergs.org.br/sites/all/themes/fiergs3/js/custom/navbar/navbar--scroll.js?tkslu7

1
2(function ($, Drupal, window, document, undefined) {
3  Drupal.behaviors.navbarScroll = {
4    attach: function(context, settings) {
5	   	var scrollInitialPosition = 39; // initial scroll position to start changing classes // scss $top-bar--height
6	   	var lastScrollTop = 0; // var declaration to scroll functionaility
7
8    	$(window).scroll(function() {
9    		if($("#navbar").hasClass("navbar-fixed-top")){
10    			// Check if the scroll is on top of the page, to remove the background
11    			// of the menu when it has a banner top
12	    	  if($(window).scrollTop() === 0) {
13	    	    $("#navbar").removeClass("navbar-is-scrolled");
14	    	  }else{
15	    	    $("#navbar").addClass("navbar-is-scrolled");
16	    	  }
17
18		  	  // $('body').removeClass('stop-scrolling');
19	    	  // check if the megamenu is open (so this doesn't make the navbar hide when scrolled)
20	    	  if($(".tb-megamenu-item.level-1").hasClass("open")){
21	    	  	// If has one open megamenu, always show the navbar (as if the page was scrolled towards top)
22		  	    $("#navbar").addClass("navbar-is-scrolled--top");
23		  	    // Disable the scroll on body
24		  	    disableScroll();
25		  	    // Enable when the mouse goes out of navbar
26		  	    $("#navbar").mouseout(function(){
27		  	    	enableScroll();
28		  	    });
29	    	  }else{
30	    			// Check the direction of the scroll so we ca show the menu
31	    			// if the user is scrolling top
32		  	    var actualScrollTop = $(this).scrollTop();
33		  	    if (actualScrollTop > lastScrollTop){
34		  	      // downscroll code
35		  	    	$("#navbar").removeClass("navbar-is-scrolled--top");
36		  	    	if($('.contact-card').length && $('.contact-card').hasClass("open")){
37		  	    		$('.contact-card').removeClass('open');
38						$(".view-banner-page-top .carousel-inner .item .title").animate({width: "100%"}, 0);
39						$(".region-navigation").animate({marginRight: "0"});
40		  	    	}
41		  	    } else {
42		  	      // upscroll code
43		  	    	$("#navbar").addClass("navbar-is-scrolled--top");
44		  	    }
45		  	    lastScrollTop = (actualScrollTop > scrollInitialPosition)? actualScrollTop : scrollInitialPosition;
46	    	  }
47	  	  }
48    	});
49
50
51    	///* Function to disable scrolling
52    	 //* thanks to https://stackoverflow.com/a/4770179/2270775
53	    	// left: 37, up: 38, right: 39, down: 40,
54	    	// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
55	    	var keys = {37: 1, 38: 1, 39: 1, 40: 1};
56
57	    	function preventDefault(e) {
58	    	  e = e || window.event;
59	    	  if (e.preventDefault)
60	    	      e.preventDefault();
61	    	  e.returnValue = false;  
62	    	}
63
64	    	function preventDefaultForScrollKeys(e) {
65	    	    if (keys[e.keyCode]) {
66	    	        preventDefault(e);
67	    	        return false;
68	    	    }
69	    	}
70
71	    	function disableScroll() {
72	    	  if (window.addEventListener) // older FF
73	    	      window.addEventListener('DOMMouseScroll', preventDefault, false);
74	    	  window.onwheel = preventDefault; // modern standard
75	    	  window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
76	    	  window.ontouchmove  = preventDefault; // mobile
77	    	  document.onkeydown  = preventDefaultForScrollKeys;
78	    	}
79
80	    	function enableScroll() {
81	    	    if (window.removeEventListener)
82	    	        window.removeEventListener('DOMMouseScroll', preventDefault, false);
83	    	    window.onmousewheel = document.onmousewheel = null; 
84	    	    window.onwheel = null; 
85	    	    window.ontouchmove = null;  
86	    	    document.onkeydown = null;  
87	    	}
88    	///* /Function to disable scrolling
89
90    }
91  };
92
93
94})(jQuery, Drupal, this, this.document);