8 lines
7.9 KiB
JavaScript
8 lines
7.9 KiB
JavaScript
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// Generated by CoffeeScript 1.6.2
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/*
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jQuery Waypoints - v2.0.3
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Copyright (c) 2011-2013 Caleb Troughton
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Dual licensed under the MIT license and GPL license.
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https://github.com/imakewebthings/jquery-waypoints/blob/master/licenses.txt
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*/
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(function(){var t=[].indexOf||function(t){for(var e=0,n=this.length;e<n;e++){if(e in this&&this[e]===t)return e}return-1},e=[].slice;(function(t,e){if(typeof define==="function"&&define.amd){return define("waypoints",["jquery"],function(n){return e(n,t)})}else{return e(t.jQuery,t)}})(this,function(n,r){var i,o,l,s,f,u,a,c,h,d,p,y,v,w,g,m;i=n(r);c=t.call(r,"ontouchstart")>=0;s={horizontal:{},vertical:{}};f=1;a={};u="waypoints-context-id";p="resize.waypoints";y="scroll.waypoints";v=1;w="waypoints-waypoint-ids";g="waypoint";m="waypoints";o=function(){function t(t){var e=this;this.$element=t;this.element=t[0];this.didResize=false;this.didScroll=false;this.id="context"+f++;this.oldScroll={x:t.scrollLeft(),y:t.scrollTop()};this.waypoints={horizontal:{},vertical:{}};t.data(u,this.id);a[this.id]=this;t.bind(y,function(){var t;if(!(e.didScroll||c)){e.didScroll=true;t=function(){e.doScroll();return e.didScroll=false};return r.setTimeout(t,n[m].settings.scrollThrottle)}});t.bind(p,function(){var t;if(!e.didResize){e.didResize=true;t=function(){n[m]("refresh");return e.didResize=false};return r.setTimeout(t,n[m].settings.resizeThrottle)}})}t.prototype.doScroll=function(){var t,e=this;t={horizontal:{newScroll:this.$element.scrollLeft(),oldScroll:this.oldScroll.x,forward:"right",backward:"left"},vertical:{newScroll:this.$element.scrollTop(),oldScroll:this.oldScroll.y,forward:"down",backward:"up"}};if(c&&(!t.vertical.oldScroll||!t.vertical.newScroll)){n[m]("refresh")}n.each(t,function(t,r){var i,o,l;l=[];o=r.newScroll>r.oldScroll;i=o?r.forward:r.backward;n.each(e.waypoints[t],function(t,e){var n,i;if(r.oldScroll<(n=e.offset)&&n<=r.newScroll){return l.push(e)}else if(r.newScroll<(i=e.offset)&&i<=r.oldScroll){return l.push(e)}});l.sort(function(t,e){return t.offset-e.offset});if(!o){l.reverse()}return n.each(l,function(t,e){if(e.options.continuous||t===l.length-1){return e.trigger([i])}})});return this.oldScroll={x:t.horizontal.newScroll,y:t.vertical.newScroll}};t.prototype.refresh=function(){var t,e,r,i=this;r=n.isWindow(this.element);e=this.$element.offset();this.doScroll();t={horizontal:{contextOffset:r?0:e.left,contextScroll:r?0:this.oldScroll.x,contextDimension:this.$element.width(),oldScroll:this.oldScroll.x,forward:"right",backward:"left",offsetProp:"left"},vertical:{contextOffset:r?0:e.top,contextScroll:r?0:this.oldScroll.y,contextDimension:r?n[m]("viewportHeight"):this.$element.height(),oldScroll:this.oldScroll.y,forward:"down",backward:"up",offsetProp:"top"}};return n.each(t,function(t,e){return n.each(i.waypoints[t],function(t,r){var i,o,l,s,f;i=r.options.offset;l=r.offset;o=n.isWindow(r.element)?0:r.$element.offset()[e.offsetProp];if(n.isFunction(i)){i=i.apply(r.element)}else if(typeof i==="string"){i=parseFloat(i);if(r.options.offset.indexOf("%")>-1){i=Math.ceil(e.contextDimension*i/100)}}r.offset=o-e.contextOffset+e.contextScroll-i;if(r.options.onlyOnScroll&&l!=null||!r.enabled){return}if(l!==null&&l<(s=e.oldScroll)&&s<=r.offset){return r.trigger([e.backward])}else if(l!==null&&l>(f=e.oldScroll)&&f>=r.offset){return r.trigger([e.forward])}else if(l===null&&e.oldScroll>=r.offset){return r.trigger([e.forward])}})})};t.prototype.checkEmpty=function(){if(n.isEmptyObject(this.waypoints.horizontal)&&n.isEmptyObject(this.waypoints.vertical)){this.$element.unbind([p,y].join(" "));return delete a[this.id]}};return t}();l=function(){function t(t,e,r){var i,o;r=n.extend({},n.fn[g].defaults,r);if(r.offset==="bottom-in-view"){r.offset=function(){var t;t=n[m]("viewportHeight");if(!n.isWindow(e.element)){t=e.$element.height()}return t-n(this).outerHeight()}}this.$element=t;this.element=t[0];this.axis=r.horizontal?"horizontal":"vertical";this.callback=r.handler;this.context=e;this.enabled=r.enabled;this.id="waypoints"+v++;this.offset=null;this.options=r;e.waypoints[this.axis][this.id]=this;s[this.axis][this.id]=this;i=(o=t.data(w))!=null?o:[];i.push(this.id);t.data(w,i)}t.prototype.trigger=function(t){if(!this.enabled){return}if(this.callback!=null){this.callback.apply(this.element,t)}if(this.options.triggerOnce){return this.destroy()}};t
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