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/*! UIkit 2.26.4 | http://www.getuikit.com | (c) 2014 YOOtheme | MIT License */
(function(UI) {
"use strict";
var $win = UI.$win,
$doc = UI.$doc,
scrollspies = [],
checkScrollSpy = function() {
for(var i=0; i < scrollspies.length; i++) {
window.requestAnimationFrame.apply(window, [scrollspies[i].check]);
}
};
UI.component('scrollspy', {
defaults: {
"target" : false,
"cls" : "uk-scrollspy-inview",
"initcls" : "uk-scrollspy-init-inview",
"topoffset" : 0,
"leftoffset" : 0,
"repeat" : false,
"delay" : 0
},
boot: function() {
// listen to scroll and resize
$doc.on("scrolling.uk.document", checkScrollSpy);
$win.on("load resize orientationchange", UI.Utils.debounce(checkScrollSpy, 50));
// init code
UI.ready(function(context) {
UI.$("[data-uk-scrollspy]", context).each(function() {
var element = UI.$(this);
if (!element.data("scrollspy")) {
var obj = UI.scrollspy(element, UI.Utils.options(element.attr("data-uk-scrollspy")));
}
});
});
},
init: function() {
var $this = this, inviewstate, initinview, togglecls = this.options.cls.split(/,/), fn = function(){
var elements = $this.options.target ? $this.element.find($this.options.target) : $this.element,
delayIdx = elements.length === 1 ? 1 : 0,
toggleclsIdx = 0;
elements.each(function(idx){
var element = UI.$(this),
inviewstate = element.data('inviewstate'),
inview = UI.Utils.isInView(element, $this.options),
toggle = element.data('ukScrollspyCls') || togglecls[toggleclsIdx].trim();
if (inview && !inviewstate && !element.data('scrollspy-idle')) {
if (!initinview) {
element.addClass($this.options.initcls);
$this.offset = element.offset();
initinview = true;
element.trigger("init.uk.scrollspy");
}
element.data('scrollspy-idle', setTimeout(function(){
element.addClass("uk-scrollspy-inview").toggleClass(toggle).width();
element.trigger("inview.uk.scrollspy");
element.data('scrollspy-idle', false);
element.data('inviewstate', true);
}, $this.options.delay * delayIdx));
delayIdx++;
}
if (!inview && inviewstate && $this.options.repeat) {
if (element.data('scrollspy-idle')) {
clearTimeout(element.data('scrollspy-idle'));
element.data('scrollspy-idle', false);
}
element.removeClass("uk-scrollspy-inview").toggleClass(toggle);
element.data('inviewstate', false);
element.trigger("outview.uk.scrollspy");
}
toggleclsIdx = togglecls[toggleclsIdx + 1] ? (toggleclsIdx + 1) : 0;
});
};
fn();
this.check = fn;
scrollspies.push(this);
}
});
var scrollspynavs = [],
checkScrollSpyNavs = function() {
for(var i=0; i < scrollspynavs.length; i++) {
window.requestAnimationFrame.apply(window, [scrollspynavs[i].check]);
}
};
UI.component('scrollspynav', {
defaults: {
"cls" : 'uk-active',
"closest" : false,
"topoffset" : 0,
"leftoffset" : 0,
"smoothscroll" : false
},
boot: function() {
// listen to scroll and resize
$doc.on("scrolling.uk.document", checkScrollSpyNavs);
$win.on("resize orientationchange", UI.Utils.debounce(checkScrollSpyNavs, 50));
// init code
UI.ready(function(context) {
UI.$("[data-uk-scrollspy-nav]", context).each(function() {
var element = UI.$(this);
if (!element.data("scrollspynav")) {
var obj = UI.scrollspynav(element, UI.Utils.options(element.attr("data-uk-scrollspy-nav")));
}
});
});
},
init: function() {
var ids = [],
links = this.find("a[href^='#']").each(function(){ if(this.getAttribute("href").trim()!=='#') ids.push(this.getAttribute("href")); }),
targets = UI.$(ids.join(",")),
clsActive = this.options.cls,
clsClosest = this.options.closest || this.options.closest;
var $this = this, inviews, fn = function(){
inviews = [];
for (var i=0 ; i < targets.length ; i++) {
if (UI.Utils.isInView(targets.eq(i), $this.options)) {
inviews.push(targets.eq(i));
}
}
if (inviews.length) {
var navitems,
scrollTop = $win.scrollTop(),
target = (function(){
for(var i=0; i< inviews.length;i++){
if (inviews[i].offset().top - $this.options.topoffset >= scrollTop){
return inviews[i];
}
}
})();
if (!target) return;
if ($this.options.closest) {
links.blur().closest(clsClosest).removeClass(clsActive);
navitems = links.filter("a[href='#"+target.attr("id")+"']").closest(clsClosest).addClass(clsActive);
} else {
navitems = links.removeClass(clsActive).filter("a[href='#"+target.attr("id")+"']").addClass(clsActive);
}
$this.element.trigger("inview.uk.scrollspynav", [target, navitems]);
}
};
if (this.options.smoothscroll && UI.smoothScroll) {
links.each(function(){
UI.smoothScroll(this, $this.options.smoothscroll);
});
}
fn();
this.element.data("scrollspynav", this);
this.check = fn;
scrollspynavs.push(this);
}
});
})(UIkit);
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