forked from joomla/Component-Builder
209 lines
6.8 KiB
JavaScript
209 lines
6.8 KiB
JavaScript
/*! UIkit 2.21.0 | http://www.getuikit.com | (c) 2014 YOOtheme | MIT License */
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(function(UI) {
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"use strict";
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var $win = UI.$win,
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$doc = UI.$doc,
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scrollspies = [],
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checkScrollSpy = function() {
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for(var i=0; i < scrollspies.length; i++) {
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window.requestAnimationFrame.apply(window, [scrollspies[i].check]);
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}
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};
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UI.component('scrollspy', {
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defaults: {
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"target" : false,
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"cls" : "uk-scrollspy-inview",
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"initcls" : "uk-scrollspy-init-inview",
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"topoffset" : 0,
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"leftoffset" : 0,
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"repeat" : false,
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"delay" : 0
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},
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boot: function() {
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// listen to scroll and resize
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$doc.on("scrolling.uk.document", checkScrollSpy);
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$win.on("load resize orientationchange", UI.Utils.debounce(checkScrollSpy, 50));
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// init code
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UI.ready(function(context) {
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UI.$("[data-uk-scrollspy]", context).each(function() {
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var element = UI.$(this);
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if (!element.data("scrollspy")) {
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var obj = UI.scrollspy(element, UI.Utils.options(element.attr("data-uk-scrollspy")));
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}
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});
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});
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},
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init: function() {
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var $this = this, inviewstate, initinview, togglecls = this.options.cls.split(/,/), fn = function(){
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var elements = $this.options.target ? $this.element.find($this.options.target) : $this.element,
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delayIdx = elements.length === 1 ? 1 : 0,
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toggleclsIdx = 0;
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elements.each(function(idx){
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var element = UI.$(this),
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inviewstate = element.data('inviewstate'),
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inview = UI.Utils.isInView(element, $this.options),
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toggle = element.data('ukScrollspyCls') || togglecls[toggleclsIdx].trim();
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if (inview && !inviewstate && !element.data('scrollspy-idle')) {
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if (!initinview) {
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element.addClass($this.options.initcls);
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$this.offset = element.offset();
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initinview = true;
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element.trigger("init.uk.scrollspy");
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}
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element.data('scrollspy-idle', setTimeout(function(){
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element.addClass("uk-scrollspy-inview").toggleClass(toggle).width();
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element.trigger("inview.uk.scrollspy");
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element.data('scrollspy-idle', false);
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element.data('inviewstate', true);
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}, $this.options.delay * delayIdx));
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delayIdx++;
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}
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if (!inview && inviewstate && $this.options.repeat) {
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if (element.data('scrollspy-idle')) {
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clearTimeout(element.data('scrollspy-idle'));
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}
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element.removeClass("uk-scrollspy-inview").toggleClass(toggle);
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element.data('inviewstate', false);
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element.trigger("outview.uk.scrollspy");
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}
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toggleclsIdx = togglecls[toggleclsIdx + 1] ? (toggleclsIdx + 1) : 0;
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});
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};
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fn();
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this.check = fn;
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scrollspies.push(this);
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}
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});
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var scrollspynavs = [],
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checkScrollSpyNavs = function() {
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for(var i=0; i < scrollspynavs.length; i++) {
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window.requestAnimationFrame.apply(window, [scrollspynavs[i].check]);
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}
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};
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UI.component('scrollspynav', {
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defaults: {
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"cls" : 'uk-active',
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"closest" : false,
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"topoffset" : 0,
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"leftoffset" : 0,
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"smoothscroll" : false
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},
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boot: function() {
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// listen to scroll and resize
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$doc.on("scrolling.uk.document", checkScrollSpyNavs);
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$win.on("resize orientationchange", UI.Utils.debounce(checkScrollSpyNavs, 50));
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// init code
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UI.ready(function(context) {
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UI.$("[data-uk-scrollspy-nav]", context).each(function() {
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var element = UI.$(this);
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if (!element.data("scrollspynav")) {
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var obj = UI.scrollspynav(element, UI.Utils.options(element.attr("data-uk-scrollspy-nav")));
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}
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});
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});
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},
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init: function() {
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var ids = [],
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links = this.find("a[href^='#']").each(function(){ ids.push(UI.$(this).attr("href")); }),
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targets = UI.$(ids.join(",")),
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clsActive = this.options.cls,
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clsClosest = this.options.closest || this.options.closest;
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var $this = this, inviews, fn = function(){
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inviews = [];
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for (var i=0 ; i < targets.length ; i++) {
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if (UI.Utils.isInView(targets.eq(i), $this.options)) {
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inviews.push(targets.eq(i));
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}
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}
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if (inviews.length) {
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var navitems,
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scrollTop = $win.scrollTop(),
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target = (function(){
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for(var i=0; i< inviews.length;i++){
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if(inviews[i].offset().top >= scrollTop){
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return inviews[i];
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}
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}
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})();
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if (!target) return;
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if ($this.options.closest) {
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links.closest(clsClosest).removeClass(clsActive);
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navitems = links.filter("a[href='#"+target.attr("id")+"']").closest(clsClosest).addClass(clsActive);
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} else {
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navitems = links.removeClass(clsActive).filter("a[href='#"+target.attr("id")+"']").addClass(clsActive);
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}
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$this.element.trigger("inview.uk.scrollspynav", [target, navitems]);
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}
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};
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if (this.options.smoothscroll && UI.smoothScroll) {
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links.each(function(){
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UI.smoothScroll(this, $this.options.smoothscroll);
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});
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}
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fn();
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this.element.data("scrollspynav", this);
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this.check = fn;
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scrollspynavs.push(this);
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}
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});
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})(UIkit);
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