\";\n if (this.options.dictFallbackText) {\n fieldsString += `
`;\n\n let fields = Dropzone.createElement(fieldsString);\n if (this.element.tagName !== \"FORM\") {\n form = Dropzone.createElement(``);\n form.appendChild(fields);\n } else {\n // Make sure that the enctype and method attributes are set properly\n this.element.setAttribute(\"enctype\", \"multipart/form-data\");\n this.element.setAttribute(\"method\", this.options.method);\n }\n return form != null ? form : fields;\n }\n\n\n // Returns the fallback elements if they exist already\n //\n // This code has to pass in IE7 :(\n getExistingFallback() {\n let getFallback = function (elements) {\n for (let el of elements) {\n if (/(^| )fallback($| )/.test(el.className)) {\n return el;\n }\n }\n };\n\n for (let tagName of [\"div\", \"form\"]) {\n var fallback;\n if (fallback = getFallback(this.element.getElementsByTagName(tagName))) {\n return fallback;\n }\n }\n }\n\n\n // Activates all listeners stored in @listeners\n setupEventListeners() {\n return this.listeners.map((elementListeners) =>\n (() => {\n let result = [];\n for (let event in elementListeners.events) {\n let listener = elementListeners.events[event];\n result.push(elementListeners.element.addEventListener(event, listener, false));\n }\n return result;\n })());\n }\n\n\n // Deactivates all listeners stored in @listeners\n removeEventListeners() {\n return this.listeners.map((elementListeners) =>\n (() => {\n let result = [];\n for (let event in elementListeners.events) {\n let listener = elementListeners.events[event];\n result.push(elementListeners.element.removeEventListener(event, listener, false));\n }\n return result;\n })());\n }\n\n // Removes all event listeners and cancels all files in the queue or being processed.\n disable() {\n this.clickableElements.forEach(element => element.classList.remove(\"dz-clickable\"));\n this.removeEventListeners();\n this.disabled = true;\n\n return this.files.map((file) => this.cancelUpload(file));\n }\n\n enable() {\n delete this.disabled;\n this.clickableElements.forEach(element => element.classList.add(\"dz-clickable\"));\n return this.setupEventListeners();\n }\n\n // Returns a nicely formatted filesize\n filesize(size) {\n let selectedSize = 0;\n let selectedUnit = \"b\";\n\n if (size > 0) {\n let units = ['tb', 'gb', 'mb', 'kb', 'b'];\n\n for (let i = 0; i < units.length; i++) {\n let unit = units[i];\n let cutoff = Math.pow(this.options.filesizeBase, 4 - i) / 10;\n\n if (size >= cutoff) {\n selectedSize = size / Math.pow(this.options.filesizeBase, 4 - i);\n selectedUnit = unit;\n break;\n }\n }\n\n selectedSize = Math.round(10 * selectedSize) / 10; // Cutting of digits\n }\n\n return `${selectedSize} ${this.options.dictFileSizeUnits[selectedUnit]}`;\n }\n\n\n // Adds or removes the `dz-max-files-reached` class from the form.\n _updateMaxFilesReachedClass() {\n if ((this.options.maxFiles != null) && (this.getAcceptedFiles().length >= this.options.maxFiles)) {\n if (this.getAcceptedFiles().length === this.options.maxFiles) {\n this.emit('maxfilesreached', this.files);\n }\n return this.element.classList.add(\"dz-max-files-reached\");\n } else {\n return this.element.classList.remove(\"dz-max-files-reached\");\n }\n }\n\n\n drop(e) {\n if (!e.dataTransfer) {\n return;\n }\n this.emit(\"drop\", e);\n\n // Convert the FileList to an Array\n // This is necessary for IE11\n let files = [];\n for (let i = 0; i < e.dataTransfer.files.length; i++) {\n files[i] = e.dataTransfer.files[i];\n }\n\n // Even if it's a folder, files.length will contain the folders.\n if (files.length) {\n let { items } = e.dataTransfer;\n if (items && items.length && (items[0].webkitGetAsEntry != null)) {\n // The browser supports dropping of folders, so handle items instead of files\n this._addFilesFromItems(items);\n } else {\n this.handleFiles(files);\n }\n }\n\n this.emit(\"addedfiles\", files);\n }\n\n paste(e) {\n if (__guard__(e != null ? e.clipboardData : undefined, x => x.items) == null) {\n return;\n }\n\n this.emit(\"paste\", e);\n let { items } = e.clipboardData;\n\n if (items.length) {\n return this._addFilesFromItems(items);\n }\n }\n\n\n handleFiles(files) {\n for (let file of files) {\n this.addFile(file);\n }\n }\n\n // When a folder is dropped (or files are pasted), items must be handled\n // instead of files.\n _addFilesFromItems(items) {\n return (() => {\n let result = [];\n for (let item of items) {\n var entry;\n if ((item.webkitGetAsEntry != null) && (entry = item.webkitGetAsEntry())) {\n if (entry.isFile) {\n result.push(this.addFile(item.getAsFile()));\n } else if (entry.isDirectory) {\n // Append all files from that directory to files\n result.push(this._addFilesFromDirectory(entry, entry.name));\n } else {\n result.push(undefined);\n }\n } else if (item.getAsFile != null) {\n if ((item.kind == null) || (item.kind === \"file\")) {\n result.push(this.addFile(item.getAsFile()));\n } else {\n result.push(undefined);\n }\n } else {\n result.push(undefined);\n }\n }\n return result;\n })();\n }\n\n\n // Goes through the directory, and adds each file it finds recursively\n _addFilesFromDirectory(directory, path) {\n let dirReader = directory.createReader();\n\n let errorHandler = error => __guardMethod__(console, 'log', o => o.log(error));\n\n var readEntries = () => {\n return dirReader.readEntries(entries => {\n if (entries.length > 0) {\n for (let entry of entries) {\n if (entry.isFile) {\n entry.file(file => {\n if (this.options.ignoreHiddenFiles && (file.name.substring(0, 1) === '.')) {\n return;\n }\n file.fullPath = `${path}/${file.name}`;\n return this.addFile(file);\n });\n } else if (entry.isDirectory) {\n this._addFilesFromDirectory(entry, `${path}/${entry.name}`);\n }\n }\n\n // Recursively call readEntries() again, since browser only handle\n // the first 100 entries.\n // See: https://developer.mozilla.org/en-US/docs/Web/API/DirectoryReader#readEntries\n readEntries();\n }\n return null;\n }\n , errorHandler);\n };\n\n return readEntries();\n }\n\n\n // If `done()` is called without argument the file is accepted\n // If you call it with an error message, the file is rejected\n // (This allows for asynchronous validation)\n //\n // This function checks the filesize, and if the file.type passes the\n // `acceptedFiles` check.\n accept(file, done) {\n if (this.options.maxFilesize && file.size > (this.options.maxFilesize * 1024 * 1024)) {\n done(this.options.dictFileTooBig.replace(\"{{filesize}}\", Math.round(file.size / 1024 / 10.24) / 100).replace(\"{{maxFilesize}}\", this.options.maxFilesize));\n } else if (!Dropzone.isValidFile(file, this.options.acceptedFiles)) {\n done(this.options.dictInvalidFileType);\n } else if ((this.options.maxFiles != null) && (this.getAcceptedFiles().length >= this.options.maxFiles)) {\n done(this.options.dictMaxFilesExceeded.replace(\"{{maxFiles}}\", this.options.maxFiles));\n this.emit(\"maxfilesexceeded\", file);\n } else {\n this.options.accept.call(this, file, done);\n }\n }\n\n addFile(file) {\n file.upload = {\n uuid: Dropzone.uuidv4(),\n progress: 0,\n // Setting the total upload size to file.size for the beginning\n // It's actual different than the size to be transmitted.\n total: file.size,\n bytesSent: 0,\n filename: this._renameFile(file)\n // Not setting chunking information here, because the acutal data — and\n // thus the chunks — might change if `options.transformFile` is set\n // and does something to the data.\n };\n this.files.push(file);\n\n file.status = Dropzone.ADDED;\n\n this.emit(\"addedfile\", file);\n\n this._enqueueThumbnail(file);\n\n this.accept(file, error => {\n if (error) {\n file.accepted = false;\n this._errorProcessing([file], error); // Will set the file.status\n } else {\n file.accepted = true;\n if (this.options.autoQueue) {\n this.enqueueFile(file);\n } // Will set .accepted = true\n }\n this._updateMaxFilesReachedClass();\n });\n }\n\n\n // Wrapper for enqueueFile\n enqueueFiles(files) {\n for (let file of files) {\n this.enqueueFile(file);\n }\n return null;\n }\n\n enqueueFile(file) {\n if ((file.status === Dropzone.ADDED) && (file.accepted === true)) {\n file.status = Dropzone.QUEUED;\n if (this.options.autoProcessQueue) {\n return setTimeout((() => this.processQueue()), 0); // Deferring the call\n }\n } else {\n throw new Error(\"This file can't be queued because it has already been processed or was rejected.\");\n }\n }\n\n _enqueueThumbnail(file) {\n if (this.options.createImageThumbnails && file.type.match(/image.*/) && (file.size <= (this.options.maxThumbnailFilesize * 1024 * 1024))) {\n this._thumbnailQueue.push(file);\n return setTimeout((() => this._processThumbnailQueue()), 0); // Deferring the call\n }\n }\n\n _processThumbnailQueue() {\n if (this._processingThumbnail || (this._thumbnailQueue.length === 0)) {\n return;\n }\n\n this._processingThumbnail = true;\n let file = this._thumbnailQueue.shift();\n return this.createThumbnail(file, this.options.thumbnailWidth, this.options.thumbnailHeight, this.options.thumbnailMethod, true, dataUrl => {\n this.emit(\"thumbnail\", file, dataUrl);\n this._processingThumbnail = false;\n return this._processThumbnailQueue();\n });\n }\n\n\n // Can be called by the user to remove a file\n removeFile(file) {\n if (file.status === Dropzone.UPLOADING) {\n this.cancelUpload(file);\n }\n this.files = without(this.files, file);\n\n this.emit(\"removedfile\", file);\n if (this.files.length === 0) {\n return this.emit(\"reset\");\n }\n }\n\n // Removes all files that aren't currently processed from the list\n removeAllFiles(cancelIfNecessary) {\n // Create a copy of files since removeFile() changes the @files array.\n if (cancelIfNecessary == null) {\n cancelIfNecessary = false;\n }\n for (let file of this.files.slice()) {\n if ((file.status !== Dropzone.UPLOADING) || cancelIfNecessary) {\n this.removeFile(file);\n }\n }\n return null;\n }\n\n // Resizes an image before it gets sent to the server. This function is the default behavior of\n // `options.transformFile` if `resizeWidth` or `resizeHeight` are set. The callback is invoked with\n // the resized blob.\n resizeImage(file, width, height, resizeMethod, callback) {\n return this.createThumbnail(file, width, height, resizeMethod, true, (dataUrl, canvas) => {\n if (canvas == null) {\n // The image has not been resized\n return callback(file);\n } else {\n let { resizeMimeType } = this.options;\n if (resizeMimeType == null) {\n resizeMimeType = file.type;\n }\n let resizedDataURL = canvas.toDataURL(resizeMimeType, this.options.resizeQuality);\n if ((resizeMimeType === 'image/jpeg') || (resizeMimeType === 'image/jpg')) {\n // Now add the original EXIF information\n resizedDataURL = ExifRestore.restore(file.dataURL, resizedDataURL);\n }\n return callback(Dropzone.dataURItoBlob(resizedDataURL));\n }\n });\n }\n\n createThumbnail(file, width, height, resizeMethod, fixOrientation, callback) {\n let fileReader = new FileReader;\n\n fileReader.onload = () => {\n\n file.dataURL = fileReader.result;\n\n // Don't bother creating a thumbnail for SVG images since they're vector\n if (file.type === \"image/svg+xml\") {\n if (callback != null) {\n callback(fileReader.result);\n }\n return;\n }\n\n if (file.type.startsWith('audio')) {\n if (callback != null) {\n callback(fileReader.result);\n }\n return;\n }\n\n this.createThumbnailFromUrl(file, width, height, resizeMethod, fixOrientation, callback);\n };\n\n fileReader.readAsDataURL(file);\n }\n\n // `mockFile` needs to have these attributes:\n //\n // { name: 'name', size: 12345, imageUrl: '' }\n //\n // `callback` will be invoked when the image has been downloaded and displayed.\n // `crossOrigin` will be added to the `img` tag when accessing the file.\n displayExistingFile(mockFile, imageUrl, callback, crossOrigin, resizeThumbnail = true) {\n this.emit(\"addedfile\", mockFile);\n this.emit(\"complete\", mockFile);\n\n if (!resizeThumbnail) {\n this.emit(\"thumbnail\", mockFile, imageUrl);\n if (callback) callback();\n } else {\n let onDone = (thumbnail) => {\n this.emit('thumbnail', mockFile, thumbnail);\n if (callback) callback();\n }\n mockFile.dataURL = imageUrl;\n\n this.createThumbnailFromUrl(mockFile, this.options.thumbnailWidth, this.options.thumbnailHeight, this.options.resizeMethod, this.options.fixOrientation, onDone, crossOrigin);\n }\n }\n\n\n createThumbnailFromUrl(file, width, height, resizeMethod, fixOrientation, callback, crossOrigin) {\n // Not using `new Image` here because of a bug in latest Chrome versions.\n // See https://github.com/enyo/dropzone/pull/226\n let img = document.createElement(\"img\");\n\n if (crossOrigin) {\n img.crossOrigin = crossOrigin;\n }\n\n img.onload = () => {\n let loadExif = callback => callback(1);\n if ((typeof EXIF !== 'undefined' && EXIF !== null) && fixOrientation) {\n loadExif = callback =>\n EXIF.getData(img, function () {\n return callback(EXIF.getTag(this, 'Orientation'));\n })\n ;\n }\n\n return loadExif(orientation => {\n file.width = img.width;\n file.height = img.height;\n\n let resizeInfo = this.options.resize.call(this, file, width, height, resizeMethod);\n\n let canvas = document.createElement(\"canvas\");\n let ctx = canvas.getContext(\"2d\");\n\n canvas.width = resizeInfo.trgWidth;\n canvas.height = resizeInfo.trgHeight;\n\n if (orientation > 4) {\n canvas.width = resizeInfo.trgHeight;\n canvas.height = resizeInfo.trgWidth;\n }\n\n switch (orientation) {\n case 2:\n // horizontal flip\n ctx.translate(canvas.width, 0);\n ctx.scale(-1, 1);\n break;\n case 3:\n // 180° rotate left\n ctx.translate(canvas.width, canvas.height);\n ctx.rotate(Math.PI);\n break;\n case 4:\n // vertical flip\n ctx.translate(0, canvas.height);\n ctx.scale(1, -1);\n break;\n case 5:\n // vertical flip + 90 rotate right\n ctx.rotate(0.5 * Math.PI);\n ctx.scale(1, -1);\n break;\n case 6:\n // 90° rotate right\n ctx.rotate(0.5 * Math.PI);\n ctx.translate(0, -canvas.width);\n break;\n case 7:\n // horizontal flip + 90 rotate right\n ctx.rotate(0.5 * Math.PI);\n ctx.translate(canvas.height, -canvas.width);\n ctx.scale(-1, 1);\n break;\n case 8:\n // 90° rotate left\n ctx.rotate(-0.5 * Math.PI);\n ctx.translate(-canvas.height, 0);\n break;\n }\n\n // This is a bugfix for iOS' scaling bug.\n drawImageIOSFix(ctx, img, resizeInfo.srcX != null ? resizeInfo.srcX : 0, resizeInfo.srcY != null ? resizeInfo.srcY : 0, resizeInfo.srcWidth, resizeInfo.srcHeight, resizeInfo.trgX != null ? resizeInfo.trgX : 0, resizeInfo.trgY != null ? resizeInfo.trgY : 0, resizeInfo.trgWidth, resizeInfo.trgHeight);\n\n let thumbnail = canvas.toDataURL(\"image/png\");\n\n if (callback != null) {\n return callback(thumbnail, canvas);\n }\n });\n };\n\n if (callback != null) {\n img.onerror = callback;\n }\n\n return img.src = file.dataURL;\n }\n\n\n // Goes through the queue and processes files if there aren't too many already.\n processQueue() {\n let { parallelUploads } = this.options;\n let processingLength = this.getUploadingFiles().length;\n let i = processingLength;\n\n // There are already at least as many files uploading than should be\n if (processingLength >= parallelUploads) {\n return;\n }\n\n let queuedFiles = this.getQueuedFiles();\n\n if (!(queuedFiles.length > 0)) {\n return;\n }\n\n if (this.options.uploadMultiple) {\n // The files should be uploaded in one request\n return this.processFiles(queuedFiles.slice(0, (parallelUploads - processingLength)));\n } else {\n while (i < parallelUploads) {\n if (!queuedFiles.length) {\n return;\n } // Nothing left to process\n this.processFile(queuedFiles.shift());\n i++;\n }\n }\n }\n\n\n // Wrapper for `processFiles`\n processFile(file) {\n return this.processFiles([file]);\n }\n\n\n // Loads the file, then calls finishedLoading()\n processFiles(files) {\n for (let file of files) {\n file.processing = true; // Backwards compatibility\n file.status = Dropzone.UPLOADING;\n\n this.emit(\"processing\", file);\n }\n\n if (this.options.uploadMultiple) {\n this.emit(\"processingmultiple\", files);\n }\n\n return this.uploadFiles(files);\n }\n\n\n _getFilesWithXhr(xhr) {\n let files;\n return files = (this.files.filter((file) => file.xhr === xhr).map((file) => file));\n }\n\n\n // Cancels the file upload and sets the status to CANCELED\n // **if** the file is actually being uploaded.\n // If it's still in the queue, the file is being removed from it and the status\n // set to CANCELED.\n cancelUpload(file) {\n if (file.status === Dropzone.UPLOADING) {\n let groupedFiles = this._getFilesWithXhr(file.xhr);\n for (let groupedFile of groupedFiles) {\n groupedFile.status = Dropzone.CANCELED;\n }\n if (typeof file.xhr !== 'undefined') {\n file.xhr.abort();\n }\n for (let groupedFile of groupedFiles) {\n this.emit(\"canceled\", groupedFile);\n }\n if (this.options.uploadMultiple) {\n this.emit(\"canceledmultiple\", groupedFiles);\n }\n\n } else if (file.status === Dropzone.ADDED || file.status === Dropzone.QUEUED) {\n file.status = Dropzone.CANCELED;\n this.emit(\"canceled\", file);\n if (this.options.uploadMultiple) {\n this.emit(\"canceledmultiple\", [file]);\n }\n }\n\n if (this.options.autoProcessQueue) {\n return this.processQueue();\n }\n }\n\n resolveOption(option, ...args) {\n if (typeof option === 'function') {\n return option.apply(this, args);\n }\n return option;\n }\n\n uploadFile(file) { return this.uploadFiles([file]); }\n\n uploadFiles(files) {\n this._transformFiles(files, (transformedFiles) => {\n if (this.options.chunking) {\n // Chunking is not allowed to be used with `uploadMultiple` so we know\n // that there is only __one__file.\n let transformedFile = transformedFiles[0];\n files[0].upload.chunked = this.options.chunking && (this.options.forceChunking || transformedFile.size > this.options.chunkSize);\n files[0].upload.totalChunkCount = Math.ceil(transformedFile.size / this.options.chunkSize);\n }\n\n if (files[0].upload.chunked) {\n // This file should be sent in chunks!\n\n // If the chunking option is set, we **know** that there can only be **one** file, since\n // uploadMultiple is not allowed with this option.\n let file = files[0];\n let transformedFile = transformedFiles[0];\n let startedChunkCount = 0;\n\n file.upload.chunks = [];\n\n let handleNextChunk = () => {\n let chunkIndex = 0;\n\n // Find the next item in file.upload.chunks that is not defined yet.\n while (file.upload.chunks[chunkIndex] !== undefined) {\n chunkIndex++;\n }\n\n // This means, that all chunks have already been started.\n if (chunkIndex >= file.upload.totalChunkCount) return;\n\n startedChunkCount++;\n\n let start = chunkIndex * this.options.chunkSize;\n let end = Math.min(start + this.options.chunkSize, file.size);\n\n let dataBlock = {\n name: this._getParamName(0),\n data: transformedFile.webkitSlice ? transformedFile.webkitSlice(start, end) : transformedFile.slice(start, end),\n filename: file.upload.filename,\n chunkIndex: chunkIndex\n };\n\n file.upload.chunks[chunkIndex] = {\n file: file,\n index: chunkIndex,\n dataBlock: dataBlock, // In case we want to retry.\n status: Dropzone.UPLOADING,\n progress: 0,\n retries: 0 // The number of times this block has been retried.\n };\n\n\n this._uploadData(files, [dataBlock]);\n };\n\n file.upload.finishedChunkUpload = (chunk) => {\n let allFinished = true;\n chunk.status = Dropzone.SUCCESS;\n\n // Clear the data from the chunk\n chunk.dataBlock = null;\n // Leaving this reference to xhr intact here will cause memory leaks in some browsers\n chunk.xhr = null;\n\n for (let i = 0; i < file.upload.totalChunkCount; i++) {\n if (file.upload.chunks[i] === undefined) {\n return handleNextChunk();\n }\n if (file.upload.chunks[i].status !== Dropzone.SUCCESS) {\n allFinished = false;\n }\n }\n\n if (allFinished) {\n this.options.chunksUploaded(file, () => {\n this._finished(files, '', null);\n });\n }\n };\n\n if (this.options.parallelChunkUploads) {\n for (let i = 0; i < file.upload.totalChunkCount; i++) {\n handleNextChunk();\n }\n }\n else {\n handleNextChunk();\n }\n } else {\n let dataBlocks = [];\n for (let i = 0; i < files.length; i++) {\n dataBlocks[i] = {\n name: this._getParamName(i),\n data: transformedFiles[i],\n filename: files[i].upload.filename\n };\n }\n this._uploadData(files, dataBlocks);\n }\n });\n }\n\n /// Returns the right chunk for given file and xhr\n _getChunk(file, xhr) {\n for (let i = 0; i < file.upload.totalChunkCount; i++) {\n if (file.upload.chunks[i] !== undefined && file.upload.chunks[i].xhr === xhr) {\n return file.upload.chunks[i];\n }\n }\n }\n\n // This function actually uploads the file(s) to the server.\n // If dataBlocks contains the actual data to upload (meaning, that this could either be transformed\n // files, or individual chunks for chunked upload).\n _uploadData(files, dataBlocks) {\n let xhr = new XMLHttpRequest();\n\n // Put the xhr object in the file objects to be able to reference it later.\n for (let file of files) {\n file.xhr = xhr;\n }\n if (files[0].upload.chunked) {\n // Put the xhr object in the right chunk object, so it can be associated later, and found with _getChunk\n files[0].upload.chunks[dataBlocks[0].chunkIndex].xhr = xhr;\n }\n\n let method = this.resolveOption(this.options.method, files);\n let url = this.resolveOption(this.options.url, files);\n xhr.open(method, url, true);\n\n // Setting the timeout after open because of IE11 issue: https://gitlab.com/meno/dropzone/issues/8\n xhr.timeout = this.resolveOption(this.options.timeout, files);\n\n // Has to be after `.open()`. See https://github.com/enyo/dropzone/issues/179\n xhr.withCredentials = !!this.options.withCredentials;\n\n\n xhr.onload = e => {\n this._finishedUploading(files, xhr, e);\n };\n\n xhr.ontimeout = () => {\n this._handleUploadError(files, xhr, `Request timedout after ${this.options.timeout} seconds`);\n };\n\n xhr.onerror = () => {\n this._handleUploadError(files, xhr);\n };\n\n // Some browsers do not have the .upload property\n let progressObj = xhr.upload != null ? xhr.upload : xhr;\n progressObj.onprogress = (e) => this._updateFilesUploadProgress(files, xhr, e);\n\n let headers = {\n \"Accept\": \"application/json\",\n \"Cache-Control\": \"no-cache\",\n \"X-Requested-With\": \"XMLHttpRequest\",\n };\n\n if (this.options.headers) {\n Dropzone.extend(headers, this.options.headers);\n }\n\n for (let headerName in headers) {\n let headerValue = headers[headerName];\n if (headerValue) {\n xhr.setRequestHeader(headerName, headerValue);\n }\n }\n\n let formData = new FormData();\n\n // Adding all @options parameters\n if (this.options.params) {\n let additionalParams = this.options.params;\n if (typeof additionalParams === 'function') {\n additionalParams = additionalParams.call(this, files, xhr, files[0].upload.chunked ? this._getChunk(files[0], xhr) : null);\n }\n\n for (let key in additionalParams) {\n let value = additionalParams[key];\n formData.append(key, value);\n }\n }\n\n // Let the user add additional data if necessary\n for (let file of files) {\n this.emit(\"sending\", file, xhr, formData);\n }\n if (this.options.uploadMultiple) {\n this.emit(\"sendingmultiple\", files, xhr, formData);\n }\n\n\n this._addFormElementData(formData);\n\n\n // Finally add the files\n // Has to be last because some servers (eg: S3) expect the file to be the last parameter\n for (let i = 0; i < dataBlocks.length; i++) {\n let dataBlock = dataBlocks[i];\n formData.append(dataBlock.name, dataBlock.data, dataBlock.filename);\n }\n\n this.submitRequest(xhr, formData, files);\n }\n\n\n // Transforms all files with this.options.transformFile and invokes done with the transformed files when done.\n _transformFiles(files, done) {\n let transformedFiles = [];\n // Clumsy way of handling asynchronous calls, until I get to add a proper Future library.\n let doneCounter = 0;\n for (let i = 0; i < files.length; i++) {\n this.options.transformFile.call(this, files[i], (transformedFile) => {\n transformedFiles[i] = transformedFile;\n if (++doneCounter === files.length) {\n done(transformedFiles);\n }\n });\n }\n }\n\n // Takes care of adding other input elements of the form to the AJAX request\n _addFormElementData(formData) {\n // Take care of other input elements\n if (this.element.tagName === \"FORM\") {\n for (let input of this.element.querySelectorAll(\"input, textarea, select, button\")) {\n let inputName = input.getAttribute(\"name\");\n let inputType = input.getAttribute(\"type\");\n if (inputType) inputType = inputType.toLowerCase();\n\n // If the input doesn't have a name, we can't use it.\n if (typeof inputName === 'undefined' || inputName === null) continue;\n\n if ((input.tagName === \"SELECT\") && input.hasAttribute(\"multiple\")) {\n // Possibly multiple values\n for (let option of input.options) {\n if (option.selected) {\n formData.append(inputName, option.value);\n }\n }\n } else if (!inputType || (inputType !== \"checkbox\" && inputType !== \"radio\") || input.checked) {\n formData.append(inputName, input.value);\n }\n }\n }\n }\n\n // Invoked when there is new progress information about given files.\n // If e is not provided, it is assumed that the upload is finished.\n _updateFilesUploadProgress(files, xhr, e) {\n let progress;\n if (typeof e !== 'undefined') {\n progress = (100 * e.loaded) / e.total;\n\n if (files[0].upload.chunked) {\n let file = files[0];\n // Since this is a chunked upload, we need to update the appropriate chunk progress.\n let chunk = this._getChunk(file, xhr);\n chunk.progress = progress;\n chunk.total = e.total;\n chunk.bytesSent = e.loaded;\n let fileProgress = 0, fileTotal, fileBytesSent;\n file.upload.progress = 0;\n file.upload.total = 0;\n file.upload.bytesSent = 0;\n for (let i = 0; i < file.upload.totalChunkCount; i++) {\n if (file.upload.chunks[i] !== undefined && file.upload.chunks[i].progress !== undefined) {\n file.upload.progress += file.upload.chunks[i].progress;\n file.upload.total += file.upload.chunks[i].total;\n file.upload.bytesSent += file.upload.chunks[i].bytesSent;\n }\n }\n file.upload.progress = file.upload.progress / file.upload.totalChunkCount;\n } else {\n for (let file of files) {\n file.upload.progress = progress;\n file.upload.total = e.total;\n file.upload.bytesSent = e.loaded;\n }\n }\n for (let file of files) {\n this.emit(\"uploadprogress\", file, file.upload.progress, file.upload.bytesSent);\n }\n } else {\n // Called when the file finished uploading\n\n let allFilesFinished = true;\n\n progress = 100;\n\n for (let file of files) {\n if ((file.upload.progress !== 100) || (file.upload.bytesSent !== file.upload.total)) {\n allFilesFinished = false;\n }\n file.upload.progress = progress;\n file.upload.bytesSent = file.upload.total;\n }\n\n // Nothing to do, all files already at 100%\n if (allFilesFinished) {\n return;\n }\n\n for (let file of files) {\n this.emit(\"uploadprogress\", file, progress, file.upload.bytesSent);\n }\n }\n\n }\n\n\n _finishedUploading(files, xhr, e) {\n let response;\n\n if (files[0].status === Dropzone.CANCELED) {\n return;\n }\n\n if (xhr.readyState !== 4) {\n return;\n }\n\n if ((xhr.responseType !== 'arraybuffer') && (xhr.responseType !== 'blob')) {\n response = xhr.responseText;\n\n if (xhr.getResponseHeader(\"content-type\") && ~xhr.getResponseHeader(\"content-type\").indexOf(\"application/json\")) {\n try {\n response = JSON.parse(response);\n } catch (error) {\n e = error;\n response = \"Invalid JSON response from server.\";\n }\n }\n }\n\n this._updateFilesUploadProgress(files);\n\n if (!(200 <= xhr.status && xhr.status < 300)) {\n this._handleUploadError(files, xhr, response);\n } else {\n if (files[0].upload.chunked) {\n files[0].upload.finishedChunkUpload(this._getChunk(files[0], xhr));\n } else {\n this._finished(files, response, e);\n }\n }\n }\n\n _handleUploadError(files, xhr, response) {\n if (files[0].status === Dropzone.CANCELED) {\n return;\n }\n\n if (files[0].upload.chunked && this.options.retryChunks) {\n let chunk = this._getChunk(files[0], xhr);\n if (chunk.retries++ < this.options.retryChunksLimit) {\n this._uploadData(files, [chunk.dataBlock]);\n return;\n } else {\n console.warn('Retried this chunk too often. Giving up.')\n }\n }\n\n this._errorProcessing(files, response || this.options.dictResponseError.replace(\"{{statusCode}}\", xhr.status), xhr);\n }\n\n submitRequest(xhr, formData, files) {\n xhr.send(formData);\n }\n\n // Called internally when processing is finished.\n // Individual callbacks have to be called in the appropriate sections.\n _finished(files, responseText, e) {\n for (let file of files) {\n file.status = Dropzone.SUCCESS;\n this.emit(\"success\", file, responseText, e);\n this.emit(\"complete\", file);\n }\n if (this.options.uploadMultiple) {\n this.emit(\"successmultiple\", files, responseText, e);\n this.emit(\"completemultiple\", files);\n }\n\n if (this.options.autoProcessQueue) {\n return this.processQueue();\n }\n }\n\n // Called internally when processing is finished.\n // Individual callbacks have to be called in the appropriate sections.\n _errorProcessing(files, message, xhr) {\n for (let file of files) {\n file.status = Dropzone.ERROR;\n this.emit(\"error\", file, message, xhr);\n this.emit(\"complete\", file);\n }\n if (this.options.uploadMultiple) {\n this.emit(\"errormultiple\", files, message, xhr);\n this.emit(\"completemultiple\", files);\n }\n\n if (this.options.autoProcessQueue) {\n return this.processQueue();\n }\n }\n\n static uuidv4() {\n return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {\n let r = Math.random() * 16 | 0, v = c === 'x' ? r : (r & 0x3 | 0x8);\n return v.toString(16);\n });\n };\n}\nDropzone.initClass();\n\n\nDropzone.version = \"5.7.0\";\n\n\n// This is a map of options for your different dropzones. Add configurations\n// to this object for your different dropzone elemens.\n//\n// Example:\n//\n// Dropzone.options.myDropzoneElementId = { maxFilesize: 1 };\n//\n// To disable autoDiscover for a specific element, you can set `false` as an option:\n//\n// Dropzone.options.myDisabledElementId = false;\n//\n// And in html:\n//\n// \nDropzone.options = {};\n\n\n// Returns the options for an element or undefined if none available.\nDropzone.optionsForElement = function (element) {\n // Get the `Dropzone.options.elementId` for this element if it exists\n if (element.getAttribute(\"id\")) {\n return Dropzone.options[camelize(element.getAttribute(\"id\"))];\n } else {\n return undefined;\n }\n};\n\n\n// Holds a list of all dropzone instances\nDropzone.instances = [];\n\n// Returns the dropzone for given element if any\nDropzone.forElement = function (element) {\n if (typeof element === \"string\") {\n element = document.querySelector(element);\n }\n if ((element != null ? element.dropzone : undefined) == null) {\n throw new Error(\"No Dropzone found for given element. This is probably because you're trying to access it before Dropzone had the time to initialize. Use the `init` option to setup any additional observers on your Dropzone.\");\n }\n return element.dropzone;\n};\n\n\n// Set to false if you don't want Dropzone to automatically find and attach to .dropzone elements.\nDropzone.autoDiscover = true;\n\n// Looks for all .dropzone elements and creates a dropzone for them\nDropzone.discover = function () {\n let dropzones;\n if (document.querySelectorAll) {\n dropzones = document.querySelectorAll(\".dropzone\");\n } else {\n dropzones = [];\n // IE :(\n let checkElements = elements =>\n (() => {\n let result = [];\n for (let el of elements) {\n if (/(^| )dropzone($| )/.test(el.className)) {\n result.push(dropzones.push(el));\n } else {\n result.push(undefined);\n }\n }\n return result;\n })()\n ;\n checkElements(document.getElementsByTagName(\"div\"));\n checkElements(document.getElementsByTagName(\"form\"));\n }\n\n return (() => {\n let result = [];\n for (let dropzone of dropzones) {\n // Create a dropzone unless auto discover has been disabled for specific element\n if (Dropzone.optionsForElement(dropzone) !== false) {\n result.push(new Dropzone(dropzone));\n } else {\n result.push(undefined);\n }\n }\n return result;\n })();\n};\n\n\n// Since the whole Drag'n'Drop API is pretty new, some browsers implement it,\n// but not correctly.\n// So I created a blacklist of userAgents. Yes, yes. Browser sniffing, I know.\n// But what to do when browsers *theoretically* support an API, but crash\n// when using it.\n//\n// This is a list of regular expressions tested against navigator.userAgent\n//\n// ** It should only be used on browser that *do* support the API, but\n// incorrectly **\n//\nDropzone.blacklistedBrowsers = [\n // The mac os and windows phone version of opera 12 seems to have a problem with the File drag'n'drop API.\n /opera.*(Macintosh|Windows Phone).*version\\/12/i\n];\n\n\n// Checks if the browser is supported\nDropzone.isBrowserSupported = function () {\n let capableBrowser = true;\n\n if (window.File && window.FileReader && window.FileList && window.Blob && window.FormData && document.querySelector) {\n if (!(\"classList\" in document.createElement(\"a\"))) {\n capableBrowser = false;\n } else {\n // The browser supports the API, but may be blacklisted.\n for (let regex of Dropzone.blacklistedBrowsers) {\n if (regex.test(navigator.userAgent)) {\n capableBrowser = false;\n continue;\n }\n }\n }\n } else {\n capableBrowser = false;\n }\n\n return capableBrowser;\n};\n\nDropzone.dataURItoBlob = function (dataURI) {\n // convert base64 to raw binary data held in a string\n // doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this\n let byteString = atob(dataURI.split(',')[1]);\n\n // separate out the mime component\n let mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];\n\n // write the bytes of the string to an ArrayBuffer\n let ab = new ArrayBuffer(byteString.length);\n let ia = new Uint8Array(ab);\n for (let i = 0, end = byteString.length, asc = 0 <= end; asc ? i <= end : i >= end; asc ? i++ : i--) {\n ia[i] = byteString.charCodeAt(i);\n }\n\n // write the ArrayBuffer to a blob\n return new Blob([ab], { type: mimeString });\n};\n\n// Returns an array without the rejected item\nconst without = (list, rejectedItem) => list.filter((item) => item !== rejectedItem).map((item) => item);\n\n// abc-def_ghi -> abcDefGhi\nconst camelize = str => str.replace(/[\\-_](\\w)/g, match => match.charAt(1).toUpperCase());\n\n// Creates an element from string\nDropzone.createElement = function (string) {\n let div = document.createElement(\"div\");\n div.innerHTML = string;\n return div.childNodes[0];\n};\n\n// Tests if given element is inside (or simply is) the container\nDropzone.elementInside = function (element, container) {\n if (element === container) {\n return true;\n } // Coffeescript doesn't support do/while loops\n while ((element = element.parentNode)) {\n if (element === container) {\n return true;\n }\n }\n return false;\n};\n\n\nDropzone.getElement = function (el, name) {\n let element;\n if (typeof el === \"string\") {\n element = document.querySelector(el);\n } else if (el.nodeType != null) {\n element = el;\n }\n if (element == null) {\n throw new Error(`Invalid \\`${name}\\` option provided. Please provide a CSS selector or a plain HTML element.`);\n }\n return element;\n};\n\n\nDropzone.getElements = function (els, name) {\n let el, elements;\n if (els instanceof Array) {\n elements = [];\n try {\n for (el of els) {\n elements.push(this.getElement(el, name));\n }\n } catch (e) {\n elements = null;\n }\n } else if (typeof els === \"string\") {\n elements = [];\n for (el of document.querySelectorAll(els)) {\n elements.push(el);\n }\n } else if (els.nodeType != null) {\n elements = [els];\n }\n\n if ((elements == null) || !elements.length) {\n throw new Error(`Invalid \\`${name}\\` option provided. Please provide a CSS selector, a plain HTML element or a list of those.`);\n }\n\n return elements;\n};\n\n// Asks the user the question and calls accepted or rejected accordingly\n//\n// The default implementation just uses `window.confirm` and then calls the\n// appropriate callback.\nDropzone.confirm = function (question, accepted, rejected) {\n if (window.confirm(question)) {\n return accepted();\n } else if (rejected != null) {\n return rejected();\n }\n};\n\n// Validates the mime type like this:\n//\n// https://developer.mozilla.org/en-US/docs/HTML/Element/input#attr-accept\nDropzone.isValidFile = function (file, acceptedFiles) {\n if (!acceptedFiles) {\n return true;\n } // If there are no accepted mime types, it's OK\n acceptedFiles = acceptedFiles.split(\",\");\n\n let mimeType = file.type;\n let baseMimeType = mimeType.replace(/\\/.*$/, \"\");\n\n for (let validType of acceptedFiles) {\n validType = validType.trim();\n if (validType.charAt(0) === \".\") {\n if (file.name.toLowerCase().indexOf(validType.toLowerCase(), file.name.length - validType.length) !== -1) {\n return true;\n }\n } else if (/\\/\\*$/.test(validType)) {\n // This is something like a image/* mime type\n if (baseMimeType === validType.replace(/\\/.*$/, \"\")) {\n return true;\n }\n } else {\n if (mimeType === validType) {\n return true;\n }\n }\n }\n\n return false;\n};\n\n// Augment jQuery\nif (typeof jQuery !== 'undefined' && jQuery !== null) {\n jQuery.fn.dropzone = function (options) {\n return this.each(function () {\n return new Dropzone(this, options);\n });\n };\n}\n\n\nif (typeof module !== 'undefined' && module !== null) {\n module.exports = Dropzone;\n} else {\n window.Dropzone = Dropzone;\n}\n\n\n// Dropzone file status codes\nDropzone.ADDED = \"added\";\n\nDropzone.QUEUED = \"queued\";\n// For backwards compatibility. Now, if a file is accepted, it's either queued\n// or uploading.\nDropzone.ACCEPTED = Dropzone.QUEUED;\n\nDropzone.UPLOADING = \"uploading\";\nDropzone.PROCESSING = Dropzone.UPLOADING; // alias\n\nDropzone.CANCELED = \"canceled\";\nDropzone.ERROR = \"error\";\nDropzone.SUCCESS = \"success\";\n\n\n/*\n\n Bugfix for iOS 6 and 7\n Source: http://stackoverflow.com/questions/11929099/html5-canvas-drawimage-ratio-bug-ios\n based on the work of https://github.com/stomita/ios-imagefile-megapixel\n\n */\n\n// Detecting vertical squash in loaded image.\n// Fixes a bug which squash image vertically while drawing into canvas for some images.\n// This is a bug in iOS6 devices. This function from https://github.com/stomita/ios-imagefile-megapixel\nlet detectVerticalSquash = function (img) {\n let iw = img.naturalWidth;\n let ih = img.naturalHeight;\n let canvas = document.createElement(\"canvas\");\n canvas.width = 1;\n canvas.height = ih;\n let ctx = canvas.getContext(\"2d\");\n ctx.drawImage(img, 0, 0);\n let { data } = ctx.getImageData(1, 0, 1, ih);\n\n\n // search image edge pixel position in case it is squashed vertically.\n let sy = 0;\n let ey = ih;\n let py = ih;\n while (py > sy) {\n let alpha = data[((py - 1) * 4) + 3];\n\n if (alpha === 0) {\n ey = py;\n } else {\n sy = py;\n }\n\n py = (ey + sy) >> 1;\n }\n let ratio = (py / ih);\n\n if (ratio === 0) {\n return 1;\n } else {\n return ratio;\n }\n};\n\n// A replacement for context.drawImage\n// (args are for source and destination).\nvar drawImageIOSFix = function (ctx, img, sx, sy, sw, sh, dx, dy, dw, dh) {\n let vertSquashRatio = detectVerticalSquash(img);\n return ctx.drawImage(img, sx, sy, sw, sh, dx, dy, dw, dh / vertSquashRatio);\n};\n\n\n// Based on MinifyJpeg\n// Source: http://www.perry.cz/files/ExifRestorer.js\n// http://elicon.blog57.fc2.com/blog-entry-206.html\nclass ExifRestore {\n static initClass() {\n this.KEY_STR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n }\n\n static encode64(input) {\n let output = '';\n let chr1 = undefined;\n let chr2 = undefined;\n let chr3 = '';\n let enc1 = undefined;\n let enc2 = undefined;\n let enc3 = undefined;\n let enc4 = '';\n let i = 0;\n while (true) {\n chr1 = input[i++];\n chr2 = input[i++];\n chr3 = input[i++];\n enc1 = chr1 >> 2;\n enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n enc4 = chr3 & 63;\n if (isNaN(chr2)) {\n enc3 = (enc4 = 64);\n } else if (isNaN(chr3)) {\n enc4 = 64;\n }\n output = output + this.KEY_STR.charAt(enc1) + this.KEY_STR.charAt(enc2) + this.KEY_STR.charAt(enc3) + this.KEY_STR.charAt(enc4);\n chr1 = (chr2 = (chr3 = ''));\n enc1 = (enc2 = (enc3 = (enc4 = '')));\n if (!(i < input.length)) {\n break;\n }\n }\n return output;\n }\n\n static restore(origFileBase64, resizedFileBase64) {\n if (!origFileBase64.match('data:image/jpeg;base64,')) {\n return resizedFileBase64;\n }\n let rawImage = this.decode64(origFileBase64.replace('data:image/jpeg;base64,', ''));\n let segments = this.slice2Segments(rawImage);\n let image = this.exifManipulation(resizedFileBase64, segments);\n return `data:image/jpeg;base64,${this.encode64(image)}`;\n }\n\n static exifManipulation(resizedFileBase64, segments) {\n let exifArray = this.getExifArray(segments);\n let newImageArray = this.insertExif(resizedFileBase64, exifArray);\n let aBuffer = new Uint8Array(newImageArray);\n return aBuffer;\n }\n\n static getExifArray(segments) {\n let seg = undefined;\n let x = 0;\n while (x < segments.length) {\n seg = segments[x];\n if ((seg[0] === 255) & (seg[1] === 225)) {\n return seg;\n }\n x++;\n }\n return [];\n }\n\n static insertExif(resizedFileBase64, exifArray) {\n let imageData = resizedFileBase64.replace('data:image/jpeg;base64,', '');\n let buf = this.decode64(imageData);\n let separatePoint = buf.indexOf(255, 3);\n let mae = buf.slice(0, separatePoint);\n let ato = buf.slice(separatePoint);\n let array = mae;\n array = array.concat(exifArray);\n array = array.concat(ato);\n return array;\n }\n\n static slice2Segments(rawImageArray) {\n let head = 0;\n let segments = [];\n while (true) {\n var length;\n if ((rawImageArray[head] === 255) & (rawImageArray[head + 1] === 218)) {\n break;\n }\n if ((rawImageArray[head] === 255) & (rawImageArray[head + 1] === 216)) {\n head += 2;\n } else {\n length = (rawImageArray[head + 2] * 256) + rawImageArray[head + 3];\n let endPoint = head + length + 2;\n let seg = rawImageArray.slice(head, endPoint);\n segments.push(seg);\n head = endPoint;\n }\n if (head > rawImageArray.length) {\n break;\n }\n }\n return segments;\n }\n\n static decode64(input) {\n let output = '';\n let chr1 = undefined;\n let chr2 = undefined;\n let chr3 = '';\n let enc1 = undefined;\n let enc2 = undefined;\n let enc3 = undefined;\n let enc4 = '';\n let i = 0;\n let buf = [];\n // remove all characters that are not A-Z, a-z, 0-9, +, /, or =\n let base64test = /[^A-Za-z0-9\\+\\/\\=]/g;\n if (base64test.exec(input)) {\n console.warn('There were invalid base64 characters in the input text.\\nValid base64 characters are A-Z, a-z, 0-9, \\'+\\', \\'/\\',and \\'=\\'\\nExpect errors in decoding.');\n }\n input = input.replace(/[^A-Za-z0-9\\+\\/\\=]/g, '');\n while (true) {\n enc1 = this.KEY_STR.indexOf(input.charAt(i++));\n enc2 = this.KEY_STR.indexOf(input.charAt(i++));\n enc3 = this.KEY_STR.indexOf(input.charAt(i++));\n enc4 = this.KEY_STR.indexOf(input.charAt(i++));\n chr1 = (enc1 << 2) | (enc2 >> 4);\n chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n chr3 = ((enc3 & 3) << 6) | enc4;\n buf.push(chr1);\n if (enc3 !== 64) {\n buf.push(chr2);\n }\n if (enc4 !== 64) {\n buf.push(chr3);\n }\n chr1 = (chr2 = (chr3 = ''));\n enc1 = (enc2 = (enc3 = (enc4 = '')));\n if (!(i < input.length)) {\n break;\n }\n }\n return buf;\n }\n}\nExifRestore.initClass();\n\n\n/*\n * contentloaded.js\n *\n * Author: Diego Perini (diego.perini at gmail.com)\n * Summary: cross-browser wrapper for DOMContentLoaded\n * Updated: 20101020\n * License: MIT\n * Version: 1.2\n *\n * URL:\n * http://javascript.nwbox.com/ContentLoaded/\n * http://javascript.nwbox.com/ContentLoaded/MIT-LICENSE\n */\n\n// @win window reference\n// @fn function reference\nlet contentLoaded = function (win, fn) {\n let done = false;\n let top = true;\n let doc = win.document;\n let root = doc.documentElement;\n let add = (doc.addEventListener ? \"addEventListener\" : \"attachEvent\");\n let rem = (doc.addEventListener ? \"removeEventListener\" : \"detachEvent\");\n let pre = (doc.addEventListener ? \"\" : \"on\");\n var init = function (e) {\n if ((e.type === \"readystatechange\") && (doc.readyState !== \"complete\")) {\n return;\n }\n ((e.type === \"load\" ? win : doc))[rem](pre + e.type, init, false);\n if (!done && (done = true)) {\n return fn.call(win, e.type || e);\n }\n };\n\n var poll = function () {\n try {\n root.doScroll(\"left\");\n } catch (e) {\n setTimeout(poll, 50);\n return;\n }\n return init(\"poll\");\n };\n\n if (doc.readyState !== \"complete\") {\n if (doc.createEventObject && root.doScroll) {\n try {\n top = !win.frameElement;\n } catch (error) {\n }\n if (top) {\n poll();\n }\n }\n doc[add](pre + \"DOMContentLoaded\", init, false);\n doc[add](pre + \"readystatechange\", init, false);\n return win[add](pre + \"load\", init, false);\n }\n};\n\n\n// As a single function to be able to write tests.\nDropzone._autoDiscoverFunction = function () {\n if (Dropzone.autoDiscover) {\n return Dropzone.discover();\n }\n};\ncontentLoaded(window, Dropzone._autoDiscoverFunction);\n\nfunction __guard__(value, transform) {\n return (typeof value !== 'undefined' && value !== null) ? transform(value) : undefined;\n}\nfunction 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