/*! flow.js 2.9.0 */
!function(a,b,c){"use strict";function d(b){if(this.support=!("undefined"==typeof File||"undefined"==typeof Blob||"undefined"==typeof FileList||!Blob.prototype.slice&&!Blob.prototype.webkitSlice&&!Blob.prototype.mozSlice),this.support){this.supportDirectory=/WebKit/.test(a.navigator.userAgent),this.files=[],this.defaults={chunkSize:1048576,forceChunkSize:!1,simultaneousUploads:3,singleFile:!1,fileParameterName:"file",progressCallbacksInterval:500,speedSmoothingFactor:.1,query:{},headers:{},withCredentials:!1,preprocess:null,method:"multipart",testMethod:"GET",uploadMethod:"POST",prioritizeFirstAndLastChunk:!1,target:"/",testChunks:!0,generateUniqueIdentifier:null,maxChunkRetries:0,chunkRetryInterval:null,permanentErrors:[404,415,500,501],successStatuses:[200,201,202],onDropStopPropagation:!1},this.opts={},this.events={};var c=this;this.onDrop=function(a){c.opts.onDropStopPropagation&&a.stopPropagation(),a.preventDefault();var b=a.dataTransfer;b.items&&b.items[0]&&b.items[0].webkitGetAsEntry?c.webkitReadDataTransfer(a):c.addFiles(b.files,a)},this.preventEvent=function(a){a.preventDefault()},this.opts=d.extend({},this.defaults,b||{})}}function e(a,b){this.flowObj=a,this.file=b,this.name=b.fileName||b.name,this.size=b.size,this.relativePath=b.relativePath||b.webkitRelativePath||this.name,this.uniqueIdentifier=a.generateUniqueIdentifier(b),this.chunks=[],this.paused=!1,this.error=!1,this.averageSpeed=0,this.currentSpeed=0,this._lastProgressCallback=Date.now(),this._prevUploadedSize=0,this._prevProgress=0,this.bootstrap()}function f(a,b,c){this.flowObj=a,this.fileObj=b,this.fileObjSize=b.size,this.offset=c,this.tested=!1,this.retries=0,this.pendingRetry=!1,this.preprocessState=0,this.loaded=0,this.total=0;var d=this.flowObj.opts.chunkSize;this.startByte=this.offset*d,this.endByte=Math.min(this.fileObjSize,(this.offset+1)*d),this.xhr=null,this.fileObjSize-this.endByte<d&&!this.flowObj.opts.forceChunkSize&&(this.endByte=this.fileObjSize);var e=this;this.event=function(a,b){b=Array.prototype.slice.call(arguments),b.unshift(e),e.fileObj.chunkEvent.apply(e.fileObj,b)},this.progressHandler=function(a){a.lengthComputable&&(e.loaded=a.loaded,e.total=a.total),e.event("progress",a)},this.testHandler=function(){var a=e.status(!0);"error"===a?(e.event(a,e.message()),e.flowObj.uploadNextChunk()):"success"===a?(e.tested=!0,e.event(a,e.message()),e.flowObj.uploadNextChunk()):e.fileObj.paused||(e.tested=!0,e.send())},this.doneHandler=function(){var a=e.status();if("success"===a||"error"===a)e.event(a,e.message()),e.flowObj.uploadNextChunk();else{e.event("retry",e.message()),e.pendingRetry=!0,e.abort(),e.retries++;var b=e.flowObj.opts.chunkRetryInterval;null!==b?setTimeout(function(){e.send()},b):e.send()}}}function g(a,b){var c=a.indexOf(b);c>-1&&a.splice(c,1)}function h(a,b){return"function"==typeof a&&(b=Array.prototype.slice.call(arguments),a=a.apply(null,b.slice(1))),a}function i(a,b){setTimeout(a.bind(b),0)}function j(a){return k(arguments,function(b){b!==a&&k(b,function(b,c){a[c]=b})}),a}function k(a,b,c){if(a){var d;if("undefined"!=typeof a.length){for(d=0;d<a.length;d++)if(b.call(c,a[d],d)===!1)return}else for(d in a)if(a.hasOwnProperty(d)&&b.call(c,a[d],d)===!1)return}}var l=a.navigator.msPointerEnabled;d.prototype={on:function(a,b){a=a.toLowerCase(),this.events.hasOwnProperty(a)||(this.events[a]=[]),this.events[a].push(b)},off:function(a,b){a!==c?(a=a.toLowerCase(),b!==c?this.events.hasOwnProperty(a)&&g(this.events[a],b):delete this.events[a]):this.events={}},fire:function(a,b){b=Array.prototype.slice.call(arguments),a=a.toLowerCase();var c=!1;return this.events.hasOwnProperty(a)&&k(this.events[a],function(a){c=a.apply(this,b.slice(1))===!1||c},this),"catchall"!=a&&(b.unshift("catchAll"),c=this.fire.apply(this,b)===!1||c),!c},webkitReadDataTransfer:function(a){function b(a){g+=a.length,k(a,function(a){if(a.isFile){var e=a.fullPath;a.file(function(a){c(a,e)},d)}else a.isDirectory&&a.createReader().readEntries(b,d)}),e()}function c(a,b){a.relativePath=b.substring(1),h.push(a),e()}function d(a){throw a}function e(){0==--g&&f.addFiles(h,a)}var f=this,g=a.dataTransfer.items.length,h=[];k(a.dataTransfer.items,function(a){var f=a.webkitGetAsEntry();return f?void(f.isFile?c(a.getAsFile(),f.fullPath):f.createReader().readEntries(b,d)):void e()})},generateUniqueIdentifier:function(a){var b=this.opts.generateUniqueIdentifier;if("function"==typeof b)return b(a);var c=a.relativePath||a.webkitRelativePath||a.fileName||a.name;return a.size+"-"+c.replace(/[^0-9a-zA-Z_-]/gim,"")},uploadNextChunk:function(a){var b=!1;if(this.opts.prioritizeFirstAndLastChunk&&(k(this.files,function(a){return!a.paused&&a.chunks.length&&"pending"===a.chunks[0].status()&&0===a.chunks[0].preprocessState?(a.chunks[0].send(),b=!0,!1):!a.paused&&a.chunks.length>1&&"pending"===a.chunks[a.chunks.length-1].status()&&0===a.chunks[0].preprocessState?(a.chunks[a.chunks.length-1].send(),b=!0,!1):void 0}),b))return b;if(k(this.files,function(a){return a.paused||k(a.chunks,function(a){return"pending"===a.status()&&0===a.preprocessState?(a.send(),b=!0,!1):void 0}),b?!1:void 0}),b)return!0;var c=!1;return k(this.files,function(a){return a.isComplete()?void 0:(c=!0,!1)}),c||a||i(function(){this.fire("complete")},this),!1},assignBrowse:function(a,c,d,e){"undefined"==typeof a.length&&(a=[a]),k(a,function(a){var f;"INPUT"===a.tagName&&"file"===a.type?f=a:(f=b.createElement("input"),f.setAttribute("type","file"),j(f.style,{visibility:"hidden",position:"absolute"}),a.appendChild(f),a.addEventListener("click",function(){f.click()},!1)),this.opts.singleFile||d||f.setAttribute("multiple","multiple"),c&&f.setAttribute("webkitdirectory","webkitdirectory"),k(e,function(a,b){f.setAttribute(b,a)});var g=this;f.addEventListener("change",function(a){g.addFiles(a.target.files,a),a.target.value=""},!1)},this)},assignDrop:function(a){"undefined"==typeof a.length&&(a=[a]),k(a,function(a){a.addEventListener("dragover",this.preventEvent,!1),a.addEventListener("dragenter",this.preventEvent,!1),a.addEventListener("drop",this.onDrop,!1)},this)},unAssignDrop:function(a){"undefined"==typeof a.length&&(a=[a]),k(a,function(a){a.removeEventListener("dragover",this.preventEvent),a.removeEventListener("dragenter",this.preventEvent),a.removeEventListener("drop",this.onDrop)},this)},isUploading:function(){var a=!1;return k(this.files,function(b){return b.isUploading()?(a=!0,!1):void 0}),a},_shouldUploadNext:function(){var a=0,b=!0,c=this.opts.simultaneousUploads;return k(this.files,function(d){k(d.chunks,function(d){return"uploading"===d.status()&&(a++,a>=c)?(b=!1,!1):void 0})}),b&&a},upload:function(){var a=this._shouldUploadNext();if(a!==!1){this.fire("uploadStart");for(var b=!1,c=1;c<=this.opts.simultaneousUploads-a;c++)b=this.uploadNextChunk(!0)||b;b||i(function(){this.fire("complete")},this)}},resume:function(){k(this.files,function(a){a.resume()})},pause:function(){k(this.files,function(a){a.pause()})},cancel:function(){for(var a=this.files.length-1;a>=0;a--)this.files[a].cancel()},progress:function(){var a=0,b=0;return k(this.files,function(c){a+=c.progress()*c.size,b+=c.size}),b>0?a/b:0},addFile:function(a,b){this.addFiles([a],b)},addFiles:function(a,b){var c=[];k(a,function(a){if((!l||l&&a.size>0)&&(a.size%4096!==0||"."!==a.name&&"."!==a.fileName)&&!this.getFromUniqueIdentifier(this.generateUniqueIdentifier(a))){var d=new e(this,a);this.fire("fileAdded",d,b)&&c.push(d)}},this),this.fire("filesAdded",c,b)&&k(c,function(a){this.opts.singleFile&&this.files.length>0&&this.removeFile(this.files[0]),this.files.push(a)},this),this.fire("filesSubmitted",c,b)},removeFile:function(a){for(var b=this.files.length-1;b>=0;b--)this.files[b]===a&&(this.files.splice(b,1),a.abort())},getFromUniqueIdentifier:function(a){var b=!1;return k(this.files,function(c){c.uniqueIdentifier===a&&(b=c)}),b},getSize:function(){var a=0;return k(this.files,function(b){a+=b.size}),a},sizeUploaded:function(){var a=0;return k(this.files,function(b){a+=b.sizeUploaded()}),a},timeRemaining:function(){var a=0,b=0;return k(this.files,function(c){c.paused||c.error||(a+=c.size-c.sizeUploaded(),b+=c.averageSpeed)}),a&&!b?Number.POSITIVE_INFINITY:a||b?Math.floor(a/b):0}},e.prototype={measureSpeed:function(){var a=Date.now()-this._lastProgressCallback;if(a){var b=this.flowObj.opts.speedSmoothingFactor,c=this.sizeUploaded();this.currentSpeed=Math.max((c-this._prevUploadedSize)/a*1e3,0),this.averageSpeed=b*this.currentSpeed+(1-b)*this.averageSpeed,this._prevUploadedSize=c}},chunkEvent:function(a,b,c){switch(b){case"progress":if(Date.now()-this._lastProgressCallback<this.flowObj.opts.progressCallbacksInterval)break;this.measureSpeed(),this.flowObj.fire("fileProgress",this,a),this.flowObj.fire("progress"),this._lastProgressCallback=Date.now();break;case"error":this.error=!0,this.abort(!0),this.flowObj.fire("fileError",this,c,a),this.flowObj.fire("error",c,this,a);break;case"success":if(this.error)return;this.measureSpeed(),this.flowObj.fire("fileProgress",this,a),this.flowObj.fire("progress"),this._lastProgressCallback=Date.now(),this.isComplete()&&(this.currentSpeed=0,this.averageSpeed=0,this.flowObj.fire("fileSuccess",this,c,a));break;case"retry":this.flowObj.fire("fileRetry",this,a)}},pause:function(){this.paused=!0,this.abort()},resume:function(){this.paused=!1,this.flowObj.upload()},abort:function(a){this.currentSpeed=0,this.averageSpeed=0;var b=this.chunks;a&&(this.chunks=[]),k(b,function(a){"uploading"===a.status()&&(a.abort(),this.flowObj.uploadNextChunk())},this)},cancel:function(){this.flowObj.removeFile(this)},retry:function(){this.bootstrap(),this.flowObj.upload()},bootstrap:function(){this.abort(!0),this.error=!1,this._prevProgress=0;for(var a=this.flowObj.opts.forceChunkSize?Math.ceil:Math.floor,b=Math.max(a(this.file.size/this.flowObj.opts.chunkSize),1),c=0;b>c;c++)this.chunks.push(new f(this.flowObj,this,c))},progress:function(){if(this.error)return 1;if(1===this.chunks.length)return this._prevProgress=Math.max(this._prevProgress,this.chunks[0].progress()),this._prevProgress;var a=0;k(this.chunks,function(b){a+=b.progress()*(b.endByte-b.startByte)});var b=a/this.size;return this._prevProgress=Math.max(this._prevProgress,b>.9999?1:b),this._prevProgress},isUploading:function(){var a=!1;return k(this.chunks,function(b){return"uploading"===b.status()?(a=!0,!1):void 0}),a},isComplete:function(){var a=!1;return k(this.chunks,function(b){var c=b.status();return"pending"===c||"uploading"===c||1===b.preprocessState?(a=!0,!1):void 0}),!a},sizeUploaded:function(){var a=0;return k(this.chunks,function(b){a+=b.sizeUploaded()}),a},timeRemaining:function(){if(this.paused||this.error)return 0;var a=this.size-this.sizeUploaded();return a&&!this.averageSpeed?Number.POSITIVE_INFINITY:a||this.averageSpeed?Math.floor(a/this.averageSpeed):0},getType:function(){return this.file.type&&this.file.type.split("/")[1]},getExtension:function(){return this.name.substr((~-this.name.lastIndexOf(".")>>>0)+2).toLowerCase()}},f.prototype={getParams:function(){return{flowChunkNumber:this.offset+1,flowChunkSize:this.flowObj.opts.chunkSize,flowCurrentChunkSize:this.endByte-this.startByte,flowTotalSize:this.fileObjSize,flowIdentifier:this.fileObj.uniqueIdentifier,flowFilename:this.fileObj.name,flowRelativePath:this.fileObj.relativePath,flowTotalChunks:this.fileObj.chunks.length}},getTarget:function(a,b){return a+=a.indexOf("?")<0?"?":"&",a+b.join("&")},test:function(){this.xhr=new XMLHttpRequest,this.xhr.addEventListener("load",this.testHandler,!1),this.xhr.addEventListener("error",this.testHandler,!1);var a=h(this.flowObj.opts.testMethod,this.fileObj,this),b=this.prepareXhrRequest(a,!0);this.xhr.send(b)},preprocessFinished:function(){this.preprocessState=2,this.send()},send:function(){var a=this.flowObj.opts.preprocess;if("function"==typeof a)switch(this.preprocessState){case 0:return this.preprocessState=1,void a(this);case 1:return}if(this.flowObj.opts.testChunks&&!this.tested)return void this.test();this.loaded=0,this.total=0,this.pendingRetry=!1;var b=this.fileObj.file.slice?"slice":this.fileObj.file.mozSlice?"mozSlice":this.fileObj.file.webkitSlice?"webkitSlice":"slice",c=this.fileObj.file[b](this.startByte,this.endByte,this.fileObj.file.type);this.xhr=new XMLHttpRequest,this.xhr.upload.addEventListener("progress",this.progressHandler,!1),this.xhr.addEventListener("load",this.doneHandler,!1),this.xhr.addEventListener("error",this.doneHandler,!1);var d=h(this.flowObj.opts.uploadMethod,this.fileObj,this),e=this.prepareXhrRequest(d,!1,this.flowObj.opts.method,c);this.xhr.send(e)},abort:function(){var a=this.xhr;this.xhr=null,a&&a.abort()},status:function(a){return this.pendingRetry||1===this.preprocessState?"uploading":this.xhr?this.xhr.readyState<4?"uploading":this.flowObj.opts.successStatuses.indexOf(this.xhr.status)>-1?"success":this.flowObj.opts.permanentErrors.indexOf(this.xhr.status)>-1||!a&&this.retries>=this.flowObj.opts.maxChunkRetries?"error":(this.abort(),"pending"):"pending"},message:function(){return this.xhr?this.xhr.responseText:""},progress:function(){if(this.pendingRetry)return 0;var a=this.status();return"success"===a||"error"===a?1:"pending"===a?0:this.total>0?this.loaded/this.total:0},sizeUploaded:function(){var a=this.endByte-this.startByte;return"success"!==this.status()&&(a=this.progress()*a),a},prepareXhrRequest:function(a,b,c,d){var e=h(this.flowObj.opts.query,this.fileObj,this,b);e=j(this.getParams(),e);var f=h(this.flowObj.opts.target,this.fileObj,this,b),g=null;if("GET"===a||"octet"===c){var i=[];k(e,function(a,b){i.push([encodeURIComponent(b),encodeURIComponent(a)].join("="))}),f=this.getTarget(f,i),g=d||null}else g=new FormData,k(e,function(a,b){g.append(b,a)}),g.append(this.flowObj.opts.fileParameterName,d,this.fileObj.file.name);return this.xhr.open(a,f,!0),this.xhr.withCredentials=this.flowObj.opts.withCredentials,k(h(this.flowObj.opts.headers,this.fileObj,this,b),function(a,b){this.xhr.setRequestHeader(b,a)},this),g}},d.evalOpts=h,d.extend=j,d.each=k,d.FlowFile=e,d.FlowChunk=f,d.version="2.9.0","object"==typeof module&&module&&"object"==typeof module.exports?module.exports=d:(a.Flow=d,"function"==typeof define&&define.amd&&define("flow",[],function(){return d}))}(window,document);