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1 lines
11 KiB
!function(a,b,c,d){a.fn.visibility=function(e){var f,g=a(this),h=g.selector||"",i=(new Date).getTime(),j=[],k=arguments[0],l="string"==typeof k,m=[].slice.call(arguments,1);return g.each(function(){var g,n=a.extend(!0,{},a.fn.visibility.settings,e),o=(n.className,n.namespace),p=(n.error,"."+o),q="module-"+o,r=a(b),s=a(this),t=a(n.context),u=(s.offsetParent(),s.selector||"",s.data(q)),v=b.requestAnimationFrame||b.mozRequestAnimationFrame||b.webkitRequestAnimationFrame||b.msRequestAnimationFrame||function(a){setTimeout(a,0)},w=this;g={initialize:function(){g.verbose("Initializing visibility",n),g.reset(),g.save.position(),g.bindEvents(),g.instantiate(),"image"==n.type&&g.setup.image(),v(g.checkVisibility)},instantiate:function(){g.verbose("Storing instance of module",g),u=g,s.data(q,g)},destroy:function(){g.verbose("Destroying previous module"),s.off(p).removeData(q)},bindEvents:function(){g.verbose("Binding visibility events to scroll and 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b=g.get.screenCalculations(),c=g.get.elementPosition();n.includeMargin?a.extend(g.cache.element,{top:c.offset.top-c.margin.top,bottom:c.offset.top+c.height+c.margin.bottom}):a.extend(g.cache.element,{top:c.offset.top,bottom:c.offset.top+c.height}),a.extend(g.cache.element,{topVisible:b.bottom>c.top,topPassed:b.top>c.top,bottomVisible:b.bottom>c.bottom,bottomPassed:b.top>c.bottom,pixelsPassed:0,percentagePassed:0}),a.extend(g.cache.element,{visible:g.cache.element.topVisible||g.cache.element.bottomVisible,passing:g.cache.element.topPassed&&!g.cache.element.bottomPassed,hidden:!g.cache.element.topVisible&&!g.cache.element.bottomVisible}),g.cache.element.passing&&(g.cache.element.pixelsPassed=b.top-c.top,g.cache.element.percentagePassed=(b.top-c.top)/c.height),g.verbose("Updated element calculations",g.cache.element)},screenCalculations:function(){var b=t.scrollTop()+n.offset;return g.cache.scroll===d&&(g.cache.scroll=t.scrollTop()+n.offset),g.save.direction(),a.extend(g.cache.screen,{top:b,bottom:b+g.cache.screen.height}),g.cache.screen},screenSize:function(){g.verbose("Saving window position"),g.cache.screen={height:t.height()}},position:function(){g.save.screenSize(),g.save.elementPosition()}},get:{pixelsPassed:function(a){var b=g.get.elementCalculations();return a.search("%")>-1?b.height*(parseInt(a,10)/100):parseInt(a,10)},occurred:function(a){return g.cache.occurred!==d?g.cache.occurred[a]||!1:!1},direction:function(){return g.cache.direction===d&&g.save.direction(),g.cache.direction},elementPosition:function(){return g.cache.element===d&&g.save.elementPosition(),g.cache.element},elementCalculations:function(){return g.cache.element===d&&g.save.elementCalculations(),g.cache.element},screenCalculations:function(){return g.cache.screen===d&&g.save.screenCalculations(),g.cache.screen},screenSize:function(){return g.cache.screen===d&&g.save.screenSize(),g.cache.screen},scroll:function(){return g.cache.scroll===d&&g.save.scroll(),g.cache.scroll},lastScroll:function(){return g.cache.screen===d?(g.debug("First scroll event, no last scroll could be found"),!1):g.cache.screen.top}},setting:function(b,c){if(a.isPlainObject(b))a.extend(!0,n,b);else{if(c===d)return n[b];n[b]=c}},internal:function(b,c){if(a.isPlainObject(b))a.extend(!0,g,b);else{if(c===d)return g[b];g[b]=c}},debug:function(){n.debug&&(n.performance?g.performance.log(arguments):(g.debug=Function.prototype.bind.call(console.info,console,n.name+":"),g.debug.apply(console,arguments)))},verbose:function(){n.verbose&&n.debug&&(n.performance?g.performance.log(arguments):(g.verbose=Function.prototype.bind.call(console.info,console,n.name+":"),g.verbose.apply(console,arguments)))},error:function(){g.error=Function.prototype.bind.call(console.error,console,n.name+":"),g.error.apply(console,arguments)},performance:{log:function(a){var b,c,d;n.performance&&(b=(new Date).getTime(),d=i||b,c=b-d,i=b,j.push({Element:w,Name:a[0],Arguments:[].slice.call(a,1)||"","Execution Time":c})),clearTimeout(g.performance.timer),g.performance.timer=setTimeout(g.performance.display,100)},display:function(){var b=n.name+":",c=0;i=!1,clearTimeout(g.performance.timer),a.each(j,function(a,b){c+=b["Execution Time"]}),b+=" "+c+"ms",h&&(b+=" '"+h+"'"),(console.group!==d||console.table!==d)&&j.length>0&&(console.groupCollapsed(b),console.table?console.table(j):a.each(j,function(a,b){console.log(b.Name+": "+b["Execution Time"]+"ms")}),console.groupEnd()),j=[]}},invoke:function(b,c,e){var g,h,i,j=u;return c=c||m,e=w||e,"string"==typeof b&&j!==d&&(b=b.split(/[\. ]/),g=b.length-1,a.each(b,function(c,e){var f=c!=g?e+b[c+1].charAt(0).toUpperCase()+b[c+1].slice(1):b;if(a.isPlainObject(j[f])&&c!=g)j=j[f];else{if(j[f]!==d)return h=j[f],!1;if(!a.isPlainObject(j[e])||c==g)return 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