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phoenix_live_view
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Rich, real-time user experiences with server-rendered HTML
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Files
assets/js/phoenix_live_view/upload_entry.js
import {
PHX_ACTIVE_ENTRY_REFS,
PHX_LIVE_FILE_UPDATED,
PHX_PREFLIGHTED_REFS
} from "./constants"
import {
channelUploader,
logError
} from "./utils"
import LiveUploader from "./live_uploader"
import DOM from "./dom"
export default class UploadEntry {
static isActive(fileEl, file){
let isNew = file._phxRef === undefined
let isPreflightInProgress = UploadEntry.isPreflightInProgress(file)
let activeRefs = fileEl.getAttribute(PHX_ACTIVE_ENTRY_REFS).split(",")
let isActive = activeRefs.indexOf(LiveUploader.genFileRef(file)) >= 0
return file.size > 0 && (isNew || isActive || !isPreflightInProgress)
}
static isPreflighted(fileEl, file){
let preflightedRefs = fileEl.getAttribute(PHX_PREFLIGHTED_REFS).split(",")
let isPreflighted = preflightedRefs.indexOf(LiveUploader.genFileRef(file)) >= 0
return isPreflighted && this.isActive(fileEl, file)
}
static isPreflightInProgress(file){
return file._preflightInProgress === true
}
static markPreflightInProgress(file){
file._preflightInProgress = true
}
constructor(fileEl, file, view){
this.ref = LiveUploader.genFileRef(file)
this.fileEl = fileEl
this.file = file
this.view = view
this.meta = null
this._isCancelled = false
this._isDone = false
this._progress = 0
this._lastProgressSent = -1
this._onDone = function (){ }
this._onElUpdated = this.onElUpdated.bind(this)
this.fileEl.addEventListener(PHX_LIVE_FILE_UPDATED, this._onElUpdated)
}
metadata(){ return this.meta }
progress(progress){
this._progress = Math.floor(progress)
if(this._progress > this._lastProgressSent){
if(this._progress >= 100){
this._progress = 100
this._lastProgressSent = 100
this._isDone = true
this.view.pushFileProgress(this.fileEl, this.ref, 100, () => {
LiveUploader.untrackFile(this.fileEl, this.file)
this._onDone()
})
} else {
this._lastProgressSent = this._progress
this.view.pushFileProgress(this.fileEl, this.ref, this._progress)
}
}
}
cancel(){
this._isCancelled = true
this._isDone = true
this._onDone()
}
isDone(){ return this._isDone }
error(reason = "failed"){
this.fileEl.removeEventListener(PHX_LIVE_FILE_UPDATED, this._onElUpdated)
this.view.pushFileProgress(this.fileEl, this.ref, {error: reason})
if(!DOM.isAutoUpload(this.fileEl)){ LiveUploader.clearFiles(this.fileEl) }
}
//private
onDone(callback){
this._onDone = () => {
this.fileEl.removeEventListener(PHX_LIVE_FILE_UPDATED, this._onElUpdated)
callback()
}
}
onElUpdated(){
let activeRefs = this.fileEl.getAttribute(PHX_ACTIVE_ENTRY_REFS).split(",")
if(activeRefs.indexOf(this.ref) === -1){ this.cancel() }
}
toPreflightPayload(){
return {
last_modified: this.file.lastModified,
name: this.file.name,
relative_path: this.file.webkitRelativePath,
size: this.file.size,
type: this.file.type,
ref: this.ref,
meta: typeof(this.file.meta) === "function" ? this.file.meta() : undefined
}
}
uploader(uploaders){
if(this.meta.uploader){
let callback = uploaders[this.meta.uploader] || logError(`no uploader configured for ${this.meta.uploader}`)
return {name: this.meta.uploader, callback: callback}
} else {
return {name: "channel", callback: channelUploader}
}
}
zipPostFlight(resp){
this.meta = resp.entries[this.ref]
if(!this.meta){ logError(`no preflight upload response returned with ref ${this.ref}`, {input: this.fileEl, response: resp}) }
}
}