1 line
10 KiB
JavaScript
1 line
10 KiB
JavaScript
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"use strict";!function(){var t=0,e={};function i(n){if(!n)throw new Error("No options passed to Waypoint constructor");if(!n.element)throw new Error("No element option passed to Waypoint constructor");if(!n.handler)throw new Error("No handler option passed to Waypoint constructor");this.key="waypoint-"+t,this.options=i.Adapter.extend({},i.defaults,n),this.element=this.options.element,this.adapter=new i.Adapter(this.element),this.callback=n.handler,this.axis=this.options.horizontal?"horizontal":"vertical",this.enabled=this.options.enabled,this.triggerPoint=null,this.group=i.Group.findOrCreate({name:this.options.group,axis:this.axis}),this.context=i.Context.findOrCreateByElement(this.options.context),i.offsetAliases[this.options.offset]&&(this.options.offset=i.offsetAliases[this.options.offset]),this.group.add(this),this.context.add(this),e[this.key]=this,t+=1}i.prototype.queueTrigger=function(t){this.group.queueTrigger(this,t)},i.prototype.trigger=function(t){this.enabled&&this.callback&&this.callback.apply(this,t)},i.prototype.destroy=function(){this.context.remove(this),this.group.remove(this),delete e[this.key]},i.prototype.disable=function(){return this.enabled=!1,this},i.prototype.enable=function(){return this.context.refresh(),this.enabled=!0,this},i.prototype.next=function(){return this.group.next(this)},i.prototype.previous=function(){return this.group.previous(this)},i.invokeAll=function(t){var i=[];for(var n in e)i.push(e[n]);for(var o=0,r=i.length;o<r;o++)i[o][t]()},i.destroyAll=function(){i.invokeAll("destroy")},i.disableAll=function(){i.invokeAll("disable")},i.enableAll=function(){for(var t in i.Context.refreshAll(),e)e[t].enabled=!0;return this},i.refreshAll=function(){i.Context.refreshAll()},i.viewportHeight=function(){return window.innerHeight||document.documentElement.clientHeight},i.viewportWidth=function(){return document.documentElement.clientWidth},i.adapters=[],i.defaults={context:window,continuous:!0,enabled:!0,group:"default",horizontal:!1,offset:0},i.offsetAliases={"bottom-in-view":function(){return this.context.innerHeight()-this.adapter.outerHeight()},"right-in-view":function(){return this.context.innerWidth()-this.adapter.outerWidth()}},window.Waypoint=i}(),function(){function t(t){window.setTimeout(t,1e3/60)}var e=0,i={},n=window.Waypoint,o=window.onload;function r(t){this.element=t,this.Adapter=n.Adapter,this.adapter=new this.Adapter(t),this.key="waypoint-context-"+e,this.didScroll=!1,this.didResize=!1,this.oldScroll={x:this.adapter.scrollLeft(),y:this.adapter.scrollTop()},this.waypoints={vertical:{},horizontal:{}},t.waypointContextKey=this.key,i[t.waypointContextKey]=this,e+=1,n.windowContext||(n.windowContext=!0,n.windowContext=new r(window)),this.createThrottledScrollHandler(),this.createThrottledResizeHandler()}r.prototype.add=function(t){var e=t.options.horizontal?"horizontal":"vertical";this.waypoints[e][t.key]=t,this.refresh()},r.prototype.checkEmpty=function(){var t=this.Adapter.isEmptyObject(this.waypoints.horizontal),e=this.Adapter.isEmptyObject(this.waypoints.vertical),n=this.element==this.element.window;t&&e&&!n&&(this.adapter.off(".waypoints"),delete i[this.key])},r.prototype.createThrottledResizeHandler=function(){var t=this;function e(){t.handleResize(),t.didResize=!1}this.adapter.on("resize.waypoints",function(){t.didResize||(t.didResize=!0,n.requestAnimationFrame(e))})},r.prototype.createThrottledScrollHandler=function(){var t=this;function e(){t.handleScroll(),t.didScroll=!1}this.adapter.on("scroll.waypoints",function(){t.didScroll&&!n.isTouch||(t.didScroll=!0,n.requestAnimationFrame(e))})},r.prototype.handleResize=function(){n.Context.refreshAll()},r.prototype.handleScroll=function(){var t={},e={horizontal:{newScroll:this.adapter.scrollLeft(),oldScroll:this.oldScroll.x,forward:"right",backward:"left"},vertical:{newScroll:this.adapter.scrollTop(),oldScroll:this.oldScroll.y,forward:"down",backward:"up"}};for(var i in e){var n=e[i],o=n.newScroll>n.oldScroll?n.forward:n.backward;for(var r in this.waypoints[i]){var s=this.waypoints[i][r];if(null!==s.triggerPoint){var l=n.oldScr
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