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master
polyfill/FileReader.js
90 строк
2 KB
Samuel Suther
require cycle
25 янв 2019, 00:32
Не верифицирован
25 янв 2019, 00:32
1a9d1bc
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// Copyright 2016 wkh237@github. All rights reserved. // Use of this source code is governed by a MIT-style license that can be // found in the LICENSE file. import ProgressEvent from './ProgressEvent.js' import EventTarget from './EventTarget' import Blob from './Blob' import Log from '../utils/log.js' import fs from '../fs' const log = new Log('FileReader') log.level(3) export default class FileReader extends EventTarget { static get EMPTY(){ return 0 } static get LOADING(){ return 1 } static get DONE(){ return 2 } // properties _readState:number = 0; _result:any; _error:any; get isRNFBPolyFill(){ return true } // event handlers onloadstart:(e:Event) => void; onprogress:(e:Event) => void; onload:(e:Event) => void; onabort:(e:Event) => void; onerror:(e:Event) => void; onloadend:(e:Event) => void; constructor() { super() log.verbose('file reader const') this._result = null } abort() { log.verbose('abort') } readAsArrayBuffer(b:Blob) { log.verbose('readAsArrayBuffer', b) } readAsBinaryString(b:Blob) { log.verbose('readAsBinaryString', b) } readAsText(b:Blob, label:?string) { log.verbose('readAsText', b, label) } readAsDataURL(b:Blob) { log.verbose('readAsDataURL', b) } dispatchEvent(event, e) { log.verbose('dispatch event', event, e) super.dispatchEvent(event, e) if(typeof this[`on${event}`] === 'function') { this[`on${event}`](e) } } // private methods // getters and setters get readyState() { return this._readyState } get result() { return this._result } }