###
#
# More info at [www.dropzonejs.com](http://www.dropzonejs.com)
#
# Copyright (c) 2012, Matias Meno
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###
noop = ->
# The Emitter class provides the ability to call `.on()` on Dropzone to listen
# to events.
# It is strongly based on component's emitter class, and I removed the
# functionality because of the dependency hell with different frameworks.
class Emitter
# Add an event listener for given event
addEventListener: @::on
on: (event, fn) ->
@_callbacks = @_callbacks || {}
# Create namespace for this event
@_callbacks[event] = [] unless @_callbacks[event]
@_callbacks[event].push fn
return @
emit: (event, args...) ->
@_callbacks = @_callbacks || {}
callbacks = @_callbacks[event]
if callbacks
callback.apply @, args for callback in callbacks
return @
# Remove event listener for given event. If fn is not provided, all event
# listeners for that event will be removed. If neither is provided, all
# event listeners will be removed.
removeListener: @::off
removeAllListeners: @::off
removeEventListener: @::off
off: (event, fn) ->
if !@_callbacks || arguments.length == 0
@_callbacks = {}
return @
# specific event
callbacks = @_callbacks[event]
return @ unless callbacks
# remove all handlers
if arguments.length == 1
delete @_callbacks[event]
return @
# remove specific handler
for callback, i in callbacks
if callback == fn
callbacks.splice i, 1
break
return @
class Dropzone extends Emitter
# Exposing the emitter class, mainly for tests
Emitter: Emitter
###
This is a list of all available events you can register on a dropzone object.
You can register an event handler like this:
dropzone.on("dragEnter", function() { });
###
events: [
"drop"
"dragstart"
"dragend"
"dragenter"
"dragover"
"dragleave"
"addedfile"
"addedfiles"
"removedfile"
"thumbnail"
"error"
"errormultiple"
"processing"
"processingmultiple"
"uploadprogress"
"totaluploadprogress"
"sending"
"sendingmultiple"
"success"
"successmultiple"
"canceled"
"canceledmultiple"
"complete"
"completemultiple"
"reset"
"maxfilesexceeded"
"maxfilesreached"
"queuecomplete"
]
defaultOptions:
# Has to be specified on elements other than form (or when the form
# doesn't have an `action` attribute). You can also
# provide a function that will be called with `files` and
# must return the url (since `v3.12.0`)
url: null
# can be changed to `"put"` if necessary. You can also provide a function
# that will be called with `files` and must return the method (since `v3.12.0`).
method: "post"
# foo
withCredentials: no
# The timeout for the XHR requests in milliseconds (since `v4.4.0`).
timeout: 30000
# How many file uploads to process in parallel (See the
# *Enqueuing file uploads* documentation section for more info)
parallelUploads: 2
# Whether to send multiple files in one request. If
# this it set to true, then the fallback file input element will
# have the `multiple` attribute as well. This option will
# also trigger additional events (like `processingmultiple`). See the events
# documentation section for more information.
uploadMultiple: no
# If not `null` defines how many files this Dropzone handles. If it exceeds,
# the event `maxfilesexceeded` will be called. The dropzone element gets the
# class `dz-max-files-reached` accordingly so you can provide visual feedback.
maxFilesize: 256
# The name of the file param that gets transferred.
# **NOTE**: If you have the option `uploadMultiple` set to `true`, then
# Dropzone will append `[]` to the name.
paramName: "file"
# Whether thumbnails for images should be generated
createImageThumbnails: true
# In MB. When the filename exceeds this limit, the thumbnail will not be generated.
maxThumbnailFilesize: 10
# If `null`, the ratio of the image will be used to calculate it.
thumbnailWidth: 120
# The same as `thumbnailWidth`. If both are null, images will not be resized.
thumbnailHeight: 120
# How the images should be scaled down in case both, `thumbnailWidth` and `thumbnailHeight` are provided.
# Can be either `contain` or `crop`.
thumbnailMethod: 'crop'
# If set, images will be resized to these dimensions before being **uploaded**.
# If only one, `resizeWidth` **or** `resizeHeight` is provided, the original aspect
# ratio of the file will be preserved.
#
# The `options.transformFile` function uses these options, so if the `transformFile` function
# is overridden, these options don't do anything.
resizeWidth: null
# See `resizeWidth`.
resizeHeight: null
# The mime type of the resized image (before it gets uploaded to the server).
# If `null` the original mime type will be used. To force jpeg, for example, use `image/jpeg`.
# See `resizeWidth` for more information.
resizeMimeType: null
# The quality of the resized images. See `resizeWidth`.
resizeQuality: 0.8
# How the images should be scaled down in case both, `resizeWidth` and `resizeHeight` are provided.
# Can be either `contain` or `crop`.
resizeMethod: 'contain'
# The base that is used to calculate the filesize. You can change this to
# 1024 if you would rather display kibibytes, mebibytes, etc...
# 1024 is technically incorrect, because `1024 bytes` are `1 kibibyte` not `1 kilobyte`.
# You can change this to `1024` if you don't care about validity.
filesizeBase: 1000
# Can be used to limit the maximum number of files that will be handled
# by this Dropzone
maxFiles: null
# Can be an object of additional parameters to transfer to the server.
# This is the same as adding hidden input fields in the form element.
params: { }
# An optional object to send additional headers to the server. Eg:
# `{ "My-Awesome-Header": "header value" }`
headers: null
# If true, the dropzone will present a file selector when clicked.
# If `true`, the dropzone element itself will be clickable, if `false`
# nothing will be clickable.
#
# You can also pass an HTML element, a CSS selector (for multiple elements)
# or an array of those. In that case, all of those elements will trigger an
# upload when clicked.
clickable: yes
# Whether hidden files in directories should be ignored.
ignoreHiddenFiles: yes
# The default implementation of `accept` checks the file's mime type or
# extension against this list. This is a comma separated list of mime
# types or file extensions.
#
# Eg.: `image/*,application/pdf,.psd`
#
# If the Dropzone is `clickable` this option will also be used as
# [`accept`](https://developer.mozilla.org/en-US/docs/HTML/Element/input#attr-accept)
# parameter on the hidden file input as well.
acceptedFiles: null
# **Deprecated!**
# Use acceptedFiles instead.
acceptedMimeTypes: null
# If false, files will be added to the queue but the queue will not be
# processed automatically.
# This can be useful if you need some additional user input before sending
# files (or if you want want all files sent at once).
# If you're ready to send the file simply call `myDropzone.processQueue()`.
#
# See the [enqueuing file uploads](#enqueuing-file-uploads) documentation
# section for more information.
autoProcessQueue: on
# If false, files added to the dropzone will not be queued by default.
# You'll have to call `enqueueFile(file)` manually.
autoQueue: on
# If `true`, this will add a link to every file preview to remove or cancel (if
# already uploading) the file. The `dictCancelUpload`, `dictCancelUploadConfirmation`
# and `dictRemoveFile` options are used for the wording.
addRemoveLinks: no
# Defines where to display the file previews – if `null` the
# Dropzone element itself is used. Can be a plain `HTMLElement` or a CSS
# selector. The element should have the `dropzone-previews` class so
# the previews are displayed properly.
previewsContainer: null
# This is the element the hidden input field (which is used when clicking on the
# dropzone to trigger file selection) will be appended to. This might
# be important in case you use frameworks to switch the content of your page.
hiddenInputContainer: "body"
# If null, no capture type will be specified
# If camera, mobile devices will skip the file selection and choose camera
# If microphone, mobile devices will skip the file selection and choose the microphone
# If camcorder, mobile devices will skip the file selection and choose the camera in video mode
# On apple devices multiple must be set to false. AcceptedFiles may need to
# be set to an appropriate mime type (e.g. "image/*", "audio/*", or "video/*").
capture: null
# **Deprecated**. Use `renameFile` instead.
renameFilename: null
# A function that is invoked before the file is uploaded to the server and renames the file.
# This function gets the `File` as argument and can use the `file.name`. The actual name of the
# file that gets used during the upload can be accessed through `file.upload.filename`.
renameFile: null
# If `true` the fallback will be forced. This is very useful to test your server
# implementations first and make sure that everything works as
# expected without dropzone if you experience problems, and to test
# how your fallbacks will look.
forceFallback: off
# The text used before any files are dropped.
dictDefaultMessage: "Drop files here to upload"
# The text that replaces the default message text it the browser is not supported.
dictFallbackMessage: "Your browser does not support drag'n'drop file uploads."
# The text that will be added before the fallback form.
# If you provide a fallback element yourself, or if this option is `null` this will
# be ignored.
dictFallbackText: "Please use the fallback form below to upload your files like in the olden days."
# If the filesize is too big.
# `{{filesize}}` and `{{maxFilesize}}` will be replaced with the respective configuration values.
dictFileTooBig: "File is too big ({{filesize}}MiB). Max filesize: {{maxFilesize}}MiB."
# If the file doesn't match the file type.
dictInvalidFileType: "You can't upload files of this type."
# If the server response was invalid.
# `{{statusCode}}` will be replaced with the servers status code.
dictResponseError: "Server responded with {{statusCode}} code."
# If `addRemoveLinks` is true, the text to be used for the cancel upload link.
dictCancelUpload: "Cancel upload"
# If `addRemoveLinks` is true, the text to be used for confirmation when cancelling upload.
dictCancelUploadConfirmation: "Are you sure you want to cancel this upload?"
# If `addRemoveLinks` is true, the text to be used to remove a file.
dictRemoveFile: "Remove file"
# If this is not null, then the user will be prompted before removing a file.
dictRemoveFileConfirmation: null
# Displayed if `maxFiles` is st and exceeded.
# The string `{{maxFiles}}` will be replaced by the configuration value.
dictMaxFilesExceeded: "You can not upload any more files."
# Allows you to translate the different units. Starting with `tb` for terabytes and going down to
# `b` for bytes.
dictFileSizeUnits: { tb: "TB", gb: "GB", mb: "MB", kb: "KB", b: "b" }
# Called when dropzone initialized
# You can add event listeners here
init: -> noop
# A function that gets a [file](https://developer.mozilla.org/en-US/docs/DOM/File)
# and a `done` function as parameters.
#
# If the done function is invoked without arguments, the file is "accepted" and will
# be processed. If you pass an error message, the file is rejected, and the error
# message will be displayed.
# This function will not be called if the file is too big or doesn't match the mime types.
accept: (file, done) -> done()
# Gets called when the browser is not supported.
# The default implementation shows the fallback input field and adds
# a text.
fallback: ->
# This code should pass in IE7... :(
@element.className = "#{@element.className} dz-browser-not-supported"
for child in @element.getElementsByTagName "div"
if /(^| )dz-message($| )/.test child.className
messageElement = child
child.className = "dz-message" # Removes the 'dz-default' class
continue
unless messageElement
messageElement = Dropzone.createElement """
"""
@element.appendChild messageElement
span = messageElement.getElementsByTagName("span")[0]
if span
if span.textContent?
span.textContent = @options.dictFallbackMessage
else if span.innerText?
span.innerText = @options.dictFallbackMessage
@element.appendChild @getFallbackForm()
# Gets called to calculate the thumbnail dimensions.
#
# It gets `file`, `width` and `height` (both may be `null`) as parameters and must return an object containing:
#
# - `srcWidth` & `srcHeight` (required)
# - `trgWidth` & `trgHeight` (required)
# - `srcX` & `srcY` (optional, default `0`)
# - `trgX` & `trgY` (optional, default `0`)
#
# Those values are going to be used by `ctx.drawImage()`.
resize: (file, width, height, resizeMethod) ->
info =
srcX: 0
srcY: 0
srcWidth: file.width
srcHeight: file.height
srcRatio = file.width / file.height
# Automatically calculate dimensions if not specified
if !width? and !height?
width = info.srcWidth
height = info.srcHeight
else if !width?
width = height * srcRatio
else if !height?
height = width / srcRatio
# Make sure images aren't upscaled
width = Math.min width, info.srcWidth
height = Math.min height, info.srcHeight
trgRatio = width / height
if info.srcWidth > width or info.srcHeight > height
# Image is bigger and needs rescaling
if resizeMethod == 'crop'
if srcRatio > trgRatio
info.srcHeight = file.height
info.srcWidth = info.srcHeight * trgRatio
else
info.srcWidth = file.width
info.srcHeight = info.srcWidth / trgRatio
else if resizeMethod == 'contain'
# Method 'contain'
if srcRatio > trgRatio
height = width / srcRatio
else
width = height * srcRatio
else
throw new Error "Unknown resizeMethod '#{resizeMethod}'"
info.srcX = (file.width - info.srcWidth) / 2
info.srcY = (file.height - info.srcHeight) / 2
info.trgWidth = width
info.trgHeight = height
return info
# Can be used to transform the file (for example, resize an image if necessary).
#
# The default implementation uses `resizeWidth` and `resizeHeight` (if provided) and resizes
# images according to those dimensions.
#
# Gets the `file` as the first parameter, and a `done()` function as the second, that needs
# to be invoked with the file when the transformation is done.
transformFile: (file, done) ->
if (@options.resizeWidth || @options.resizeHeight) and file.type.match(/image.*/)
@resizeImage file, @options.resizeWidth, @options.resizeHeight, @options.resizeMethod, done
else
done file
# A string that contains the template used for each dropped
# file. Change it to fulfill your needs but make sure to properly
# provide all elements.
#
# If you want to use an actual HTML element instead of providing a String
# as a config option, you could create a div with the id `tpl`,
# put the template inside it and provide the element like this:
#
# document
# .querySelector('#tpl')
# .innerHTML
#
previewTemplate: """
"""
# END OPTIONS
# (Required by the dropzone documentation parser)
###
Those functions register themselves to the events on init and handle all
the user interface specific stuff. Overwriting them won't break the upload
but can break the way it's displayed.
You can overwrite them if you don't like the default behavior. If you just
want to add an additional event handler, register it on the dropzone object
and don't overwrite those options.
###
# Those are self explanatory and simply concern the DragnDrop.
drop: (e) -> @element.classList.remove "dz-drag-hover"
dragstart: noop
dragend: (e) -> @element.classList.remove "dz-drag-hover"
dragenter: (e) -> @element.classList.add "dz-drag-hover"
dragover: (e) -> @element.classList.add "dz-drag-hover"
dragleave: (e) -> @element.classList.remove "dz-drag-hover"
paste: noop
# Called whenever there are no files left in the dropzone anymore, and the
# dropzone should be displayed as if in the initial state.
reset: ->
@element.classList.remove "dz-started"
# Called when a file is added to the queue
# Receives `file`
addedfile: (file) ->
@element.classList.add "dz-started" if @element == @previewsContainer
if @previewsContainer
file.previewElement = Dropzone.createElement @options.previewTemplate.trim()
file.previewTemplate = file.previewElement # Backwards compatibility
@previewsContainer.appendChild file.previewElement
node.textContent = file.name for node in file.previewElement.querySelectorAll("[data-dz-name]")
node.innerHTML = @filesize file.size for node in file.previewElement.querySelectorAll("[data-dz-size]")
if @options.addRemoveLinks
file._removeLink = Dropzone.createElement """#{@options.dictRemoveFile}"""
file.previewElement.appendChild file._removeLink
removeFileEvent = (e) =>
e.preventDefault()
e.stopPropagation()
if file.status == Dropzone.UPLOADING
Dropzone.confirm @options.dictCancelUploadConfirmation, => @removeFile file
else
if @options.dictRemoveFileConfirmation
Dropzone.confirm @options.dictRemoveFileConfirmation, => @removeFile file
else
@removeFile file
removeLink.addEventListener "click", removeFileEvent for removeLink in file.previewElement.querySelectorAll("[data-dz-remove]")
# Called whenever a file is removed.
removedfile: (file) ->
file.previewElement?.parentNode.removeChild file.previewElement if file.previewElement
@_updateMaxFilesReachedClass()
# Called when a thumbnail has been generated
# Receives `file` and `dataUrl`
thumbnail: (file, dataUrl) ->
if file.previewElement
file.previewElement.classList.remove "dz-file-preview"
for thumbnailElement in file.previewElement.querySelectorAll("[data-dz-thumbnail]")
thumbnailElement.alt = file.name
thumbnailElement.src = dataUrl
setTimeout (=> file.previewElement.classList.add "dz-image-preview"), 1
# Called whenever an error occurs
# Receives `file` and `message`
error: (file, message) ->
if file.previewElement
file.previewElement.classList.add "dz-error"
message = message.error if typeof message != "String" and message.error
node.textContent = message for node in file.previewElement.querySelectorAll("[data-dz-errormessage]")
errormultiple: noop
# Called when a file gets processed. Since there is a cue, not all added
# files are processed immediately.
# Receives `file`
processing: (file) ->
if file.previewElement
file.previewElement.classList.add "dz-processing"
file._removeLink.textContent = @options.dictCancelUpload if file._removeLink
processingmultiple: noop
# Called whenever the upload progress gets updated.
# Receives `file`, `progress` (percentage 0-100) and `bytesSent`.
# To get the total number of bytes of the file, use `file.size`
uploadprogress: (file, progress, bytesSent) ->
if file.previewElement
for node in file.previewElement.querySelectorAll("[data-dz-uploadprogress]")
if node.nodeName is 'PROGRESS'
node.value = progress
else
node.style.width = "#{progress}%"
# Called whenever the total upload progress gets updated.
# Called with totalUploadProgress (0-100), totalBytes and totalBytesSent
totaluploadprogress: noop
# Called just before the file is sent. Gets the `xhr` object as second
# parameter, so you can modify it (for example to add a CSRF token) and a
# `formData` object to add additional information.
sending: noop
sendingmultiple: noop
# When the complete upload is finished and successful
# Receives `file`
success: (file) ->
file.previewElement.classList.add "dz-success" if file.previewElement
successmultiple: noop
# When the upload is canceled.
canceled: (file) -> @emit "error", file, "Upload canceled."
canceledmultiple: noop
# When the upload is finished, either with success or an error.
# Receives `file`
complete: (file) ->
file._removeLink.textContent = @options.dictRemoveFile if file._removeLink
file.previewElement.classList.add "dz-complete" if file.previewElement
completemultiple: noop
maxfilesexceeded: noop
maxfilesreached: noop
queuecomplete: noop
addedfiles: noop
# global utility
extend = (target, objects...) ->
for object in objects
target[key] = val for key, val of object
target
constructor: (@element, options) ->
# For backwards compatibility since the version was in the prototype previously
@version = Dropzone.version
@defaultOptions.previewTemplate = @defaultOptions.previewTemplate.replace /\n*/g, ""
@clickableElements = [ ]
@listeners = [ ]
@files = [] # All files
@element = document.querySelector @element if typeof @element == "string"
# Not checking if instance of HTMLElement or Element since IE9 is extremely weird.
throw new Error "Invalid dropzone element." unless @element and @element.nodeType?
throw new Error "Dropzone already attached." if @element.dropzone
# Now add this dropzone to the instances.
Dropzone.instances.push @
# Put the dropzone inside the element itself.
@element.dropzone = @
elementOptions = Dropzone.optionsForElement(@element) ? { }
@options = extend { }, @defaultOptions, elementOptions, options ? { }
# If the browser failed, just call the fallback and leave
return @options.fallback.call this if @options.forceFallback or !Dropzone.isBrowserSupported()
# @options.url = @element.getAttribute "action" unless @options.url?
@options.url = @element.getAttribute "action" unless @options.url?
throw new Error "No URL provided." unless @options.url
throw new Error "You can't provide both 'acceptedFiles' and 'acceptedMimeTypes'. 'acceptedMimeTypes' is deprecated." if @options.acceptedFiles and @options.acceptedMimeTypes
# Backwards compatibility
if @options.acceptedMimeTypes
@options.acceptedFiles = @options.acceptedMimeTypes
delete @options.acceptedMimeTypes
# Backwards compatibility
if @options.renameFilename?
@options.renameFile = (file) => @options.renameFilename.call this, file.name, file
@options.method = @options.method.toUpperCase()
if (fallback = @getExistingFallback()) and fallback.parentNode
# Remove the fallback
fallback.parentNode.removeChild fallback
# Display previews in the previewsContainer element or the Dropzone element unless explicitly set to false
if @options.previewsContainer != false
if @options.previewsContainer
@previewsContainer = Dropzone.getElement @options.previewsContainer, "previewsContainer"
else
@previewsContainer = @element
if @options.clickable
if @options.clickable == yes
@clickableElements = [ @element ]
else
@clickableElements = Dropzone.getElements @options.clickable, "clickable"
@init()
# Returns all files that have been accepted
getAcceptedFiles: -> file for file in @files when file.accepted
# Returns all files that have been rejected
# Not sure when that's going to be useful, but added for completeness.
getRejectedFiles: -> file for file in @files when not file.accepted
getFilesWithStatus: (status) -> file for file in @files when file.status == status
# Returns all files that are in the queue
getQueuedFiles: -> @getFilesWithStatus Dropzone.QUEUED
getUploadingFiles: -> @getFilesWithStatus Dropzone.UPLOADING
getAddedFiles: -> @getFilesWithStatus Dropzone.ADDED
# Files that are either queued or uploading
getActiveFiles: -> file for file in @files when file.status == Dropzone.UPLOADING or file.status == Dropzone.QUEUED
# The function that gets called when Dropzone is initialized. You
# can (and should) setup event listeners inside this function.
init: ->
# In case it isn't set already
@element.setAttribute("enctype", "multipart/form-data") if @element.tagName == "form"
if @element.classList.contains("dropzone") and !@element.querySelector(".dz-message")
@element.appendChild Dropzone.createElement """
#{@options.dictDefaultMessage}
"""
if @clickableElements.length
setupHiddenFileInput = =>
@hiddenFileInput.parentNode.removeChild @hiddenFileInput if @hiddenFileInput
@hiddenFileInput = document.createElement "input"
@hiddenFileInput.setAttribute "type", "file"
@hiddenFileInput.setAttribute "multiple", "multiple" if !@options.maxFiles? || @options.maxFiles > 1
@hiddenFileInput.className = "dz-hidden-input"
@hiddenFileInput.setAttribute "accept", @options.acceptedFiles if @options.acceptedFiles?
@hiddenFileInput.setAttribute "capture", @options.capture if @options.capture?
# Not setting `display="none"` because some browsers don't accept clicks
# on elements that aren't displayed.
@hiddenFileInput.style.visibility = "hidden"
@hiddenFileInput.style.position = "absolute"
@hiddenFileInput.style.top = "0"
@hiddenFileInput.style.left = "0"
@hiddenFileInput.style.height = "0"
@hiddenFileInput.style.width = "0"
document.querySelector(@options.hiddenInputContainer).appendChild @hiddenFileInput
@hiddenFileInput.addEventListener "change", =>
files = @hiddenFileInput.files
@addFile file for file in files if files.length
@emit "addedfiles", files
setupHiddenFileInput()
setupHiddenFileInput()
@URL = window.URL ? window.webkitURL
# Setup all event listeners on the Dropzone object itself.
# They're not in @setupEventListeners() because they shouldn't be removed
# again when the dropzone gets disabled.
@on eventName, @options[eventName] for eventName in @events
@on "uploadprogress", => @updateTotalUploadProgress()
@on "removedfile", => @updateTotalUploadProgress()
@on "canceled", (file) => @emit "complete", file
# Emit a `queuecomplete` event if all files finished uploading.
@on "complete", (file) =>
if @getAddedFiles().length == 0 and @getUploadingFiles().length == 0 and @getQueuedFiles().length == 0
# This needs to be deferred so that `queuecomplete` really triggers after `complete`
setTimeout (=> @emit "queuecomplete"), 0
noPropagation = (e) ->
e.stopPropagation()
if e.preventDefault
e.preventDefault()
else
e.returnValue = false
# Create the listeners
@listeners = [
{
element: @element
events:
"dragstart": (e) =>
@emit "dragstart", e
"dragenter": (e) =>
noPropagation e
@emit "dragenter", e
"dragover": (e) =>
# Makes it possible to drag files from chrome's download bar
# http://stackoverflow.com/questions/19526430/drag-and-drop-file-uploads-from-chrome-downloads-bar
# Try is required to prevent bug in Internet Explorer 11 (SCRIPT65535 exception)
try efct = e.dataTransfer.effectAllowed
e.dataTransfer.dropEffect = if 'move' == efct or 'linkMove' == efct then 'move' else 'copy'
noPropagation e
@emit "dragover", e
"dragleave": (e) =>
@emit "dragleave", e
"drop": (e) =>
noPropagation e
@drop e
"dragend": (e) =>
@emit "dragend", e
# This is disabled right now, because the browsers don't implement it properly.
# "paste": (e) =>
# noPropagation e
# @paste e
}
]
@clickableElements.forEach (clickableElement) =>
@listeners.push
element: clickableElement
events:
"click": (evt) =>
# Only the actual dropzone or the message element should trigger file selection
if (clickableElement != @element) or (evt.target == @element or Dropzone.elementInside evt.target, @element.querySelector ".dz-message")
@hiddenFileInput.click() # Forward the click
return true
@enable()
@options.init.call @
# Not fully tested yet
destroy: ->
@disable()
@removeAllFiles true
if @hiddenFileInput?.parentNode
@hiddenFileInput.parentNode.removeChild @hiddenFileInput
@hiddenFileInput = null
delete @element.dropzone
Dropzone.instances.splice Dropzone.instances.indexOf(this), 1
updateTotalUploadProgress: ->
totalBytesSent = 0
totalBytes = 0
activeFiles = @getActiveFiles()
if activeFiles.length
for file in @getActiveFiles()
totalBytesSent += file.upload.bytesSent
totalBytes += file.upload.total
totalUploadProgress = 100 * totalBytesSent / totalBytes
else
totalUploadProgress = 100
@emit "totaluploadprogress", totalUploadProgress, totalBytes, totalBytesSent
# @options.paramName can be a function taking one parameter rather than a string.
# A parameter name for a file is obtained simply by calling this with an index number.
_getParamName: (n) ->
if typeof @options.paramName is "function"
@options.paramName n
else
"#{@options.paramName}#{if @options.uploadMultiple then "[#{n}]" else ""}"
# If @options.renameFile is a function,
# the function will be used to rename the file.name before appending it to the formData
_renameFile: (file) ->
return file.name unless typeof @options.renameFile is "function"
@options.renameFile file
# Returns a form that can be used as fallback if the browser does not support DragnDrop
#
# If the dropzone is already a form, only the input field and button are returned. Otherwise a complete form element is provided.
# This code has to pass in IE7 :(
getFallbackForm: ->
return existingFallback if existingFallback = @getExistingFallback()
fieldsString = """
"""
fieldsString += """
#{@options.dictFallbackText}
""" if @options.dictFallbackText
fieldsString += """
"""
fields = Dropzone.createElement fieldsString
if @element.tagName isnt "FORM"
form = Dropzone.createElement("""""")
form.appendChild fields
else
# Make sure that the enctype and method attributes are set properly
@element.setAttribute "enctype", "multipart/form-data"
@element.setAttribute "method", @options.method
form ? fields
# Returns the fallback elements if they exist already
#
# This code has to pass in IE7 :(
getExistingFallback: ->
getFallback = (elements) -> return el for el in elements when /(^| )fallback($| )/.test el.className
for tagName in [ "div", "form" ]
return fallback if fallback = getFallback @element.getElementsByTagName tagName
# Activates all listeners stored in @listeners
setupEventListeners: ->
for elementListeners in @listeners
elementListeners.element.addEventListener event, listener, false for event, listener of elementListeners.events
# Deactivates all listeners stored in @listeners
removeEventListeners: ->
for elementListeners in @listeners
elementListeners.element.removeEventListener event, listener, false for event, listener of elementListeners.events
# Removes all event listeners and cancels all files in the queue or being processed.
disable: ->
@clickableElements.forEach (element) -> element.classList.remove "dz-clickable"
@removeEventListeners()
@cancelUpload file for file in @files
enable: ->
@clickableElements.forEach (element) -> element.classList.add "dz-clickable"
@setupEventListeners()
# Returns a nicely formatted filesize
filesize: (size) ->
selectedSize = 0
selectedUnit = "b"
if size > 0
units = [ 'tb', 'gb', 'mb', 'kb', 'b' ]
for unit, i in units
cutoff = Math.pow(@options.filesizeBase, 4 - i) / 10
if size >= cutoff
selectedSize = size / Math.pow(@options.filesizeBase, 4 - i)
selectedUnit = unit
break
selectedSize = Math.round(10 * selectedSize) / 10 # Cutting of digits
"#{selectedSize} #{@options.dictFileSizeUnits[selectedUnit]}"
# Adds or removes the `dz-max-files-reached` class from the form.
_updateMaxFilesReachedClass: ->
if @options.maxFiles? and @getAcceptedFiles().length >= @options.maxFiles
@emit 'maxfilesreached', @files if @getAcceptedFiles().length == @options.maxFiles
@element.classList.add "dz-max-files-reached"
else
@element.classList.remove "dz-max-files-reached"
drop: (e) ->
return unless e.dataTransfer
@emit "drop", e
files = e.dataTransfer.files
@emit "addedfiles", files
# Even if it's a folder, files.length will contain the folders.
if files.length
items = e.dataTransfer.items
if items and items.length and (items[0].webkitGetAsEntry?)
# The browser supports dropping of folders, so handle items instead of files
@_addFilesFromItems items
else
@handleFiles files
return
paste: (e) ->
return unless e?.clipboardData?.items?
@emit "paste", e
items = e.clipboardData.items
@_addFilesFromItems items if items.length
handleFiles: (files) ->
@addFile file for file in files
# When a folder is dropped (or files are pasted), items must be handled
# instead of files.
_addFilesFromItems: (items) ->
for item in items
if item.webkitGetAsEntry? and entry = item.webkitGetAsEntry()
if entry.isFile
@addFile item.getAsFile()
else if entry.isDirectory
# Append all files from that directory to files
@_addFilesFromDirectory entry, entry.name
else if item.getAsFile?
if !item.kind? or item.kind == "file"
@addFile item.getAsFile()
# Goes through the directory, and adds each file it finds recursively
_addFilesFromDirectory: (directory, path) ->
dirReader = directory.createReader()
errorHandler = (error) -> console?.log? error
readEntries = () =>
dirReader.readEntries (entries) =>
if entries.length > 0
for entry in entries
if entry.isFile
entry.file (file) =>
return if @options.ignoreHiddenFiles and file.name.substring(0, 1) is '.'
file.fullPath = "#{path}/#{file.name}"
@addFile file
else if entry.isDirectory
@_addFilesFromDirectory entry, "#{path}/#{entry.name}"
# Recursively call readEntries() again, since browser only handle
# the first 100 entries.
# See: https://developer.mozilla.org/en-US/docs/Web/API/DirectoryReader#readEntries
readEntries()
return null
, errorHandler
readEntries()
# If `done()` is called without argument the file is accepted
# If you call it with an error message, the file is rejected
# (This allows for asynchronous validation)
#
# This function checks the filesize, and if the file.type passes the
# `acceptedFiles` check.
accept: (file, done) ->
if file.size > @options.maxFilesize * 1024 * 1024
done @options.dictFileTooBig.replace("{{filesize}}", Math.round(file.size / 1024 / 10.24) / 100).replace("{{maxFilesize}}", @options.maxFilesize)
else unless Dropzone.isValidFile file, @options.acceptedFiles
done @options.dictInvalidFileType
else if @options.maxFiles? and @getAcceptedFiles().length >= @options.maxFiles
done @options.dictMaxFilesExceeded.replace "{{maxFiles}}", @options.maxFiles
@emit "maxfilesexceeded", file
else
@options.accept.call this, file, done
addFile: (file) ->
file.upload =
progress: 0
# Setting the total upload size to file.size for the beginning
# It's actual different than the size to be transmitted.
total: file.size
bytesSent: 0
filename: @_renameFile file
@files.push file
file.status = Dropzone.ADDED
@emit "addedfile", file
@_enqueueThumbnail file
@accept file, (error) =>
if error
file.accepted = false
@_errorProcessing [ file ], error # Will set the file.status
else
file.accepted = true
@enqueueFile file if @options.autoQueue # Will set .accepted = true
@_updateMaxFilesReachedClass()
# Wrapper for enqueueFile
enqueueFiles: (files) -> @enqueueFile file for file in files; null
enqueueFile: (file) ->
if file.status == Dropzone.ADDED and file.accepted == true
file.status = Dropzone.QUEUED
if @options.autoProcessQueue
setTimeout (=> @processQueue()), 0 # Deferring the call
else
throw new Error "This file can't be queued because it has already been processed or was rejected."
_thumbnailQueue: [ ]
_processingThumbnail: no
_enqueueThumbnail: (file) ->
if @options.createImageThumbnails and file.type.match(/image.*/) and file.size <= @options.maxThumbnailFilesize * 1024 * 1024
@_thumbnailQueue.push(file)
setTimeout (=> @_processThumbnailQueue()), 0 # Deferring the call
_processThumbnailQueue: ->
return if @_processingThumbnail or @_thumbnailQueue.length == 0
@_processingThumbnail = yes
file = @_thumbnailQueue.shift()
@createThumbnail file, @options.thumbnailWidth, @options.thumbnailHeight, @options.thumbnailMethod, true, (dataUrl) =>
@emit "thumbnail", file, dataUrl
@_processingThumbnail = no
@_processThumbnailQueue()
# Can be called by the user to remove a file
removeFile: (file) ->
@cancelUpload file if file.status == Dropzone.UPLOADING
@files = without @files, file
@emit "removedfile", file
@emit "reset" if @files.length == 0
# Removes all files that aren't currently processed from the list
removeAllFiles: (cancelIfNecessary = off) ->
# Create a copy of files since removeFile() changes the @files array.
for file in @files.slice()
@removeFile file if file.status != Dropzone.UPLOADING || cancelIfNecessary
return null
# Resizes an image before it gets sent to the server. This function is the default behavior of
# `options.transformFile` if `resizeWidth` or `resizeHeight` are set. The callback is invoked with
# the resized blob.
resizeImage: (file, width, height, resizeMethod, callback) ->
@createThumbnail file, width, height, resizeMethod, false, (dataUrl, canvas) =>
if canvas == null
# The image has not been resized
callback file
else
resizeMimeType = @options.resizeMimeType
resizeMimeType ?= file.type
resizedDataURL = canvas.toDataURL resizeMimeType, @options.resizeQuality
if resizeMimeType == 'image/jpeg' || resizeMimeType == 'image/jpg'
# Now add the original EXIF information
resizedDataURL = ExifRestore.restore file.dataURL, resizedDataURL
callback Dropzone.dataURItoBlob resizedDataURL
createThumbnail: (file, width, height, resizeMethod, fixOrientation, callback) ->
fileReader = new FileReader
fileReader.onload = =>
file.dataURL = fileReader.result
# Don't bother creating a thumbnail for SVG images since they're vector
if file.type == "image/svg+xml"
callback(fileReader.result) if callback?
return
@createThumbnailFromUrl file, width, height, resizeMethod, fixOrientation, callback
fileReader.readAsDataURL file
createThumbnailFromUrl: (file, width, height, resizeMethod, fixOrientation, callback, crossOrigin) ->
# Not using `new Image` here because of a bug in latest Chrome versions.
# See https://github.com/enyo/dropzone/pull/226
img = document.createElement "img"
img.crossOrigin = crossOrigin if crossOrigin
img.onload = =>
loadExif = (callback) -> callback 1
if EXIF? and fixOrientation
loadExif = (callback) ->
EXIF.getData img, () ->
callback EXIF.getTag this, 'Orientation'
loadExif (orientation) =>
file.width = img.width
file.height = img.height
resizeInfo = @options.resize.call @, file, width, height, resizeMethod
canvas = document.createElement "canvas"
ctx = canvas.getContext "2d"
canvas.width = resizeInfo.trgWidth
canvas.height = resizeInfo.trgHeight
if orientation > 4
canvas.width = resizeInfo.trgHeight
canvas.height = resizeInfo.trgWidth
switch orientation
when 2
# horizontal flip
ctx.translate canvas.width, 0
ctx.scale -1, 1
when 3
# 180° rotate left
ctx.translate canvas.width, canvas.height
ctx.rotate Math.PI
when 4
# vertical flip
ctx.translate 0, canvas.height
ctx.scale 1, -1
when 5
# vertical flip + 90 rotate right
ctx.rotate 0.5 * Math.PI
ctx.scale 1, -1
when 6
# 90° rotate right
ctx.rotate 0.5 * Math.PI
ctx.translate 0, -canvas.height
when 7
# horizontal flip + 90 rotate right
ctx.rotate 0.5 * Math.PI
ctx.translate canvas.width, -canvas.height
ctx.scale -1, 1
when 8
# 90° rotate left
ctx.rotate -0.5 * Math.PI
ctx.translate -canvas.width, 0
# This is a bugfix for iOS' scaling bug.
drawImageIOSFix ctx, img, resizeInfo.srcX ? 0, resizeInfo.srcY ? 0, resizeInfo.srcWidth, resizeInfo.srcHeight, resizeInfo.trgX ? 0, resizeInfo.trgY ? 0, resizeInfo.trgWidth, resizeInfo.trgHeight
thumbnail = canvas.toDataURL "image/png"
callback(thumbnail, canvas) if callback?
img.onerror = callback if callback?
img.src = file.dataURL
# Goes through the queue and processes files if there aren't too many already.
processQueue: ->
parallelUploads = @options.parallelUploads
processingLength = @getUploadingFiles().length
i = processingLength
# There are already at least as many files uploading than should be
return if processingLength >= parallelUploads
queuedFiles = @getQueuedFiles()
return unless queuedFiles.length > 0
if @options.uploadMultiple
# The files should be uploaded in one request
@processFiles queuedFiles.slice 0, (parallelUploads - processingLength)
else
while i < parallelUploads
return unless queuedFiles.length # Nothing left to process
@processFile queuedFiles.shift()
i++
# Wrapper for `processFiles`
processFile: (file) -> @processFiles [ file ]
# Loads the file, then calls finishedLoading()
processFiles: (files) ->
for file in files
file.processing = yes # Backwards compatibility
file.status = Dropzone.UPLOADING
@emit "processing", file
@emit "processingmultiple", files if @options.uploadMultiple
@uploadFiles files
_getFilesWithXhr: (xhr) -> files = (file for file in @files when file.xhr == xhr)
# Cancels the file upload and sets the status to CANCELED
# **if** the file is actually being uploaded.
# If it's still in the queue, the file is being removed from it and the status
# set to CANCELED.
cancelUpload: (file) ->
if file.status == Dropzone.UPLOADING
groupedFiles = @_getFilesWithXhr file.xhr
groupedFile.status = Dropzone.CANCELED for groupedFile in groupedFiles
file.xhr.abort()
@emit "canceled", groupedFile for groupedFile in groupedFiles
@emit "canceledmultiple", groupedFiles if @options.uploadMultiple
else if file.status in [ Dropzone.ADDED, Dropzone.QUEUED ]
file.status = Dropzone.CANCELED
@emit "canceled", file
@emit "canceledmultiple", [ file ] if @options.uploadMultiple
@processQueue() if @options.autoProcessQueue
resolveOption = (option, args...) ->
if typeof option == 'function'
return option.apply(@, args)
option
# Wrapper for uploadFiles()
uploadFile: (file) -> @uploadFiles [ file ]
uploadFiles: (files) ->
xhr = new XMLHttpRequest()
# Put the xhr object in the file objects to be able to reference it later.
file.xhr = xhr for file in files
method = resolveOption @options.method, files
url = resolveOption @options.url, files
xhr.open method, url, true
# Setting the timeout after open because of IE11 issue: https://gitlab.com/meno/dropzone/issues/8
xhr.timeout = resolveOption @options.timeout, files
# Has to be after `.open()`. See https://github.com/enyo/dropzone/issues/179
xhr.withCredentials = !!@options.withCredentials
response = null
handleError = =>
for file in files
@_errorProcessing files, response || @options.dictResponseError.replace("{{statusCode}}", xhr.status), xhr
updateProgress = (e) =>
if e?
progress = 100 * e.loaded / e.total
for file in files
file.upload.progress = progress
file.upload.total = e.total
file.upload.bytesSent = e.loaded
else
# Called when the file finished uploading
allFilesFinished = yes
progress = 100
for file in files
allFilesFinished = no unless file.upload.progress == 100 and file.upload.bytesSent == file.upload.total
file.upload.progress = progress
file.upload.bytesSent = file.upload.total
# Nothing to do, all files already at 100%
return if allFilesFinished
for file in files
@emit "uploadprogress", file, progress, file.upload.bytesSent
xhr.onload = (e) =>
return if files[0].status == Dropzone.CANCELED
return unless xhr.readyState is 4
if xhr.responseType != 'arraybuffer' && xhr.responseType != 'blob'
response = xhr.responseText
if xhr.getResponseHeader("content-type") and ~xhr.getResponseHeader("content-type").indexOf "application/json"
try
response = JSON.parse response
catch e
response = "Invalid JSON response from server."
updateProgress()
unless 200 <= xhr.status < 300
handleError()
else
@_finished files, response, e
xhr.onerror = =>
return if files[0].status == Dropzone.CANCELED
handleError()
# Some browsers do not have the .upload property
progressObj = xhr.upload ? xhr
progressObj.onprogress = updateProgress
headers =
"Accept": "application/json",
"Cache-Control": "no-cache",
"X-Requested-With": "XMLHttpRequest",
extend headers, @options.headers if @options.headers
for headerName, headerValue of headers
xhr.setRequestHeader headerName, headerValue if headerValue
formData = new FormData()
# Adding all @options parameters
formData.append key, value for key, value of @options.params if @options.params
# Let the user add additional data if necessary
@emit "sending", file, xhr, formData for file in files
@emit "sendingmultiple", files, xhr, formData if @options.uploadMultiple
# Take care of other input elements
if @element.tagName == "FORM"
for input in @element.querySelectorAll "input, textarea, select, button"
inputName = input.getAttribute "name"
inputType = input.getAttribute "type"
if input.tagName == "SELECT" and input.hasAttribute "multiple"
# Possibly multiple values
formData.append inputName, option.value for option in input.options when option.selected
else if !inputType or (inputType.toLowerCase() not in [ "checkbox", "radio" ]) or input.checked
formData.append inputName, input.value
# Finally add the files
# Has to be last because some servers (eg: S3) expect the file to be the last parameter
# Clumsy way of handling asynchronous calls, until I get to add a proper Future library.
doneCounter = 0
for i in [0..files.length-1]
doneFunction = (file, paramName, fileName) => (transformedFile) =>
formData.append paramName, transformedFile, fileName
@submitRequest xhr, formData, files if ++doneCounter == files.length
@options.transformFile.call @, files[i], doneFunction(files[i], @_getParamName(i), files[i].upload.filename)
submitRequest: (xhr, formData, files) ->
xhr.send formData
# Called internally when processing is finished.
# Individual callbacks have to be called in the appropriate sections.
_finished: (files, responseText, e) ->
for file in files
file.status = Dropzone.SUCCESS
@emit "success", file, responseText, e
@emit "complete", file
if @options.uploadMultiple
@emit "successmultiple", files, responseText, e
@emit "completemultiple", files
@processQueue() if @options.autoProcessQueue
# Called internally when processing is finished.
# Individual callbacks have to be called in the appropriate sections.
_errorProcessing: (files, message, xhr) ->
for file in files
file.status = Dropzone.ERROR
@emit "error", file, message, xhr
@emit "complete", file
if @options.uploadMultiple
@emit "errormultiple", files, message, xhr
@emit "completemultiple", files
@processQueue() if @options.autoProcessQueue
Dropzone.version = "5.1.1"
# This is a map of options for your different dropzones. Add configurations
# to this object for your different dropzone elemens.
#
# Example:
#
# Dropzone.options.myDropzoneElementId = { maxFilesize: 1 };
#
# To disable autoDiscover for a specific element, you can set `false` as an option:
#
# Dropzone.options.myDisabledElementId = false;
#
# And in html:
#
#
Dropzone.options = { }
# Returns the options for an element or undefined if none available.
Dropzone.optionsForElement = (element) ->
# Get the `Dropzone.options.elementId` for this element if it exists
if element.getAttribute("id") then Dropzone.options[camelize element.getAttribute "id"] else undefined
# Holds a list of all dropzone instances
Dropzone.instances = [ ]
# Returns the dropzone for given element if any
Dropzone.forElement = (element) ->
element = document.querySelector element if typeof element == "string"
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." unless element?.dropzone?
return element.dropzone
# Set to false if you don't want Dropzone to automatically find and attach to .dropzone elements.
Dropzone.autoDiscover = on
# Looks for all .dropzone elements and creates a dropzone for them
Dropzone.discover = ->
if document.querySelectorAll
dropzones = document.querySelectorAll ".dropzone"
else
dropzones = [ ]
# IE :(
checkElements = (elements) ->
for el in elements
dropzones.push el if /(^| )dropzone($| )/.test el.className
checkElements document.getElementsByTagName "div"
checkElements document.getElementsByTagName "form"
for dropzone in dropzones
# Create a dropzone unless auto discover has been disabled for specific element
new Dropzone dropzone unless Dropzone.optionsForElement(dropzone) == false
# Since the whole Drag'n'Drop API is pretty new, some browsers implement it,
# but not correctly.
# So I created a blacklist of userAgents. Yes, yes. Browser sniffing, I know.
# But what to do when browsers *theoretically* support an API, but crash
# when using it.
#
# This is a list of regular expressions tested against navigator.userAgent
#
# ** It should only be used on browser that *do* support the API, but
# incorrectly **
#
Dropzone.blacklistedBrowsers = [
# The mac os version of opera 12 seems to have a problem with the File drag'n'drop API.
/opera.*Macintosh.*version\/12/i
# /MSIE\ 10/i
]
# Checks if the browser is supported
Dropzone.isBrowserSupported = ->
capableBrowser = yes
if window.File and window.FileReader and window.FileList and window.Blob and window.FormData and document.querySelector
unless "classList" of document.createElement "a"
capableBrowser = no
else
# The browser supports the API, but may be blacklisted.
for regex in Dropzone.blacklistedBrowsers
if regex.test navigator.userAgent
capableBrowser = no
continue
else
capableBrowser = no
capableBrowser
Dropzone.dataURItoBlob = (dataURI) ->
# convert base64 to raw binary data held in a string
# doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this
byteString = atob dataURI.split(',')[1]
# separate out the mime component
mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]
# write the bytes of the string to an ArrayBuffer
ab = new ArrayBuffer byteString.length
ia = new Uint8Array ab
for i in [0 .. byteString.length]
ia[i] = byteString.charCodeAt i
# write the ArrayBuffer to a blob
new Blob [ab], {type: mimeString}
# Returns an array without the rejected item
without = (list, rejectedItem) -> item for item in list when item isnt rejectedItem
# abc-def_ghi -> abcDefGhi
camelize = (str) -> str.replace /[\-_](\w)/g, (match) -> match.charAt(1).toUpperCase()
# Creates an element from string
Dropzone.createElement = (string) ->
div = document.createElement "div"
div.innerHTML = string
div.childNodes[0]
# Tests if given element is inside (or simply is) the container
Dropzone.elementInside = (element, container) ->
return yes if element == container # Coffeescript doesn't support do/while loops
return yes while element = element.parentNode when element == container
return no
Dropzone.getElement = (el, name) ->
if typeof el == "string"
element = document.querySelector el
else if el.nodeType?
element = el
throw new Error "Invalid `#{name}` option provided. Please provide a CSS selector or a plain HTML element." unless element?
return element
Dropzone.getElements = (els, name) ->
if els instanceof Array
elements = [ ]
try
elements.push @getElement el, name for el in els
catch e
elements = null
else if typeof els == "string"
elements = [ ]
elements.push el for el in document.querySelectorAll els
else if els.nodeType?
elements = [ els ]
throw new Error "Invalid `#{name}` option provided. Please provide a CSS selector, a plain HTML element or a list of those." unless elements? and elements.length
return elements
# Asks the user the question and calls accepted or rejected accordingly
#
# The default implementation just uses `window.confirm` and then calls the
# appropriate callback.
Dropzone.confirm = (question, accepted, rejected) ->
if window.confirm question
accepted()
else if rejected?
rejected()
# Validates the mime type like this:
#
# https://developer.mozilla.org/en-US/docs/HTML/Element/input#attr-accept
Dropzone.isValidFile = (file, acceptedFiles) ->
return yes unless acceptedFiles # If there are no accepted mime types, it's OK
acceptedFiles = acceptedFiles.split ","
mimeType = file.type
baseMimeType = mimeType.replace /\/.*$/, ""
for validType in acceptedFiles
validType = validType.trim()
if validType.charAt(0) == "."
return yes if file.name.toLowerCase().indexOf(validType.toLowerCase(), file.name.length - validType.length) != -1
else if /\/\*$/.test validType
# This is something like a image/* mime type
return yes if baseMimeType == validType.replace /\/.*$/, ""
else
return yes if mimeType == validType
return no
# Augment jQuery
if jQuery?
jQuery.fn.dropzone = (options) ->
this.each -> new Dropzone this, options
if module?
module.exports = Dropzone
else
window.Dropzone = Dropzone
# Dropzone file status codes
Dropzone.ADDED = "added"
Dropzone.QUEUED = "queued"
# For backwards compatibility. Now, if a file is accepted, it's either queued
# or uploading.
Dropzone.ACCEPTED = Dropzone.QUEUED
Dropzone.UPLOADING = "uploading"
Dropzone.PROCESSING = Dropzone.UPLOADING # alias
Dropzone.CANCELED = "canceled"
Dropzone.ERROR = "error"
Dropzone.SUCCESS = "success"
###
Bugfix for iOS 6 and 7
Source: http://stackoverflow.com/questions/11929099/html5-canvas-drawimage-ratio-bug-ios
based on the work of https://github.com/stomita/ios-imagefile-megapixel
###
# Detecting vertical squash in loaded image.
# Fixes a bug which squash image vertically while drawing into canvas for some images.
# This is a bug in iOS6 devices. This function from https://github.com/stomita/ios-imagefile-megapixel
detectVerticalSquash = (img) ->
iw = img.naturalWidth
ih = img.naturalHeight
canvas = document.createElement("canvas")
canvas.width = 1
canvas.height = ih
ctx = canvas.getContext("2d")
ctx.drawImage img, 0, 0
data = ctx.getImageData(1, 0, 1, ih).data
# search image edge pixel position in case it is squashed vertically.
sy = 0
ey = ih
py = ih
while py > sy
alpha = data[(py - 1) * 4 + 3]
if alpha is 0 then ey = py else sy = py
py = (ey + sy) >> 1
ratio = (py / ih)
if (ratio is 0) then 1 else ratio
# A replacement for context.drawImage
# (args are for source and destination).
drawImageIOSFix = (ctx, img, sx, sy, sw, sh, dx, dy, dw, dh) ->
vertSquashRatio = detectVerticalSquash img
ctx.drawImage img, sx, sy, sw, sh, dx, dy, dw, dh / vertSquashRatio
# Based on MinifyJpeg
# Source: http://www.perry.cz/files/ExifRestorer.js
# http://elicon.blog57.fc2.com/blog-entry-206.html
class ExifRestore
@KEY_STR: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
@encode64: (input) ->
output = ''
chr1 = undefined
chr2 = undefined
chr3 = ''
enc1 = undefined
enc2 = undefined
enc3 = undefined
enc4 = ''
i = 0
loop
chr1 = input[i++]
chr2 = input[i++]
chr3 = input[i++]
enc1 = chr1 >> 2
enc2 = (chr1 & 3) << 4 | chr2 >> 4
enc3 = (chr2 & 15) << 2 | chr3 >> 6
enc4 = chr3 & 63
if isNaN(chr2)
enc3 = enc4 = 64
else if isNaN(chr3)
enc4 = 64
output = output + @KEY_STR.charAt(enc1) + @KEY_STR.charAt(enc2) + @KEY_STR.charAt(enc3) + @KEY_STR.charAt(enc4)
chr1 = chr2 = chr3 = ''
enc1 = enc2 = enc3 = enc4 = ''
unless i < input.length
break
output
@restore: (origFileBase64, resizedFileBase64) ->
if !origFileBase64.match('data:image/jpeg;base64,')
return resizedFileBase64
rawImage = @decode64(origFileBase64.replace('data:image/jpeg;base64,', ''))
segments = @slice2Segments(rawImage)
image = @exifManipulation(resizedFileBase64, segments)
'data:image/jpeg;base64,' + @encode64 image
@exifManipulation: (resizedFileBase64, segments) ->
exifArray = @getExifArray(segments)
newImageArray = @insertExif(resizedFileBase64, exifArray)
aBuffer = new Uint8Array(newImageArray)
aBuffer
@getExifArray: (segments) ->
seg = undefined
x = 0
while x < segments.length
seg = segments[x]
if seg[0] == 255 & seg[1] == 225
return seg
x++
[]
@insertExif: (resizedFileBase64, exifArray) ->
imageData = resizedFileBase64.replace('data:image/jpeg;base64,', '')
buf = @decode64(imageData)
separatePoint = buf.indexOf(255, 3)
mae = buf.slice(0, separatePoint)
ato = buf.slice(separatePoint)
array = mae
array = array.concat(exifArray)
array = array.concat(ato)
array
@slice2Segments: (rawImageArray) ->
head = 0
segments = []
loop
if rawImageArray[head] == 255 & rawImageArray[head + 1] == 218
break
if rawImageArray[head] == 255 & rawImageArray[head + 1] == 216
head += 2
else
length = rawImageArray[head + 2] * 256 + rawImageArray[head + 3]
endPoint = head + length + 2
seg = rawImageArray.slice(head, endPoint)
segments.push seg
head = endPoint
if head > rawImageArray.length
break
segments
@decode64: (input) ->
output = ''
chr1 = undefined
chr2 = undefined
chr3 = ''
enc1 = undefined
enc2 = undefined
enc3 = undefined
enc4 = ''
i = 0
buf = []
# remove all characters that are not A-Z, a-z, 0-9, +, /, or =
base64test = /[^A-Za-z0-9\+\/\=]/g
if base64test.exec(input)
console.warning 'There were invalid base64 characters in the input text.\n' + 'Valid base64 characters are A-Z, a-z, 0-9, \'+\', \'/\',and \'=\'\n' + 'Expect errors in decoding.'
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '')
loop
enc1 = @KEY_STR.indexOf(input.charAt(i++))
enc2 = @KEY_STR.indexOf(input.charAt(i++))
enc3 = @KEY_STR.indexOf(input.charAt(i++))
enc4 = @KEY_STR.indexOf(input.charAt(i++))
chr1 = enc1 << 2 | enc2 >> 4
chr2 = (enc2 & 15) << 4 | enc3 >> 2
chr3 = (enc3 & 3) << 6 | enc4
buf.push chr1
if enc3 != 64
buf.push chr2
if enc4 != 64
buf.push chr3
chr1 = chr2 = chr3 = ''
enc1 = enc2 = enc3 = enc4 = ''
unless i < input.length
break
buf
###
# contentloaded.js
#
# Author: Diego Perini (diego.perini at gmail.com)
# Summary: cross-browser wrapper for DOMContentLoaded
# Updated: 20101020
# License: MIT
# Version: 1.2
#
# URL:
# http://javascript.nwbox.com/ContentLoaded/
# http://javascript.nwbox.com/ContentLoaded/MIT-LICENSE
###
# @win window reference
# @fn function reference
contentLoaded = (win, fn) ->
done = false
top = true
doc = win.document
root = doc.documentElement
add = (if doc.addEventListener then "addEventListener" else "attachEvent")
rem = (if doc.addEventListener then "removeEventListener" else "detachEvent")
pre = (if doc.addEventListener then "" else "on")
init = (e) ->
return if e.type is "readystatechange" and doc.readyState isnt "complete"
((if e.type is "load" then win else doc))[rem] pre + e.type, init, false
fn.call win, e.type or e if not done and (done = true)
poll = ->
try
root.doScroll "left"
catch e
setTimeout poll, 50
return
init "poll"
unless doc.readyState is "complete"
if doc.createEventObject and root.doScroll
try
top = not win.frameElement
poll() if top
doc[add] pre + "DOMContentLoaded", init, false
doc[add] pre + "readystatechange", init, false
win[add] pre + "load", init, false
# As a single function to be able to write tests.
Dropzone._autoDiscoverFunction = -> Dropzone.discover() if Dropzone.autoDiscover
contentLoaded window, Dropzone._autoDiscoverFunction