75 lines
1.8 KiB
JavaScript
75 lines
1.8 KiB
JavaScript
'use strict'
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/* global FileReader */
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/* global MouseEvent */
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function Source () {
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this.cache = {}
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this.install = () => {
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}
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this.start = () => {
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this.new()
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}
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this.new = () => {
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console.log('Source', 'New file..')
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this.cache = {}
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}
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this.open = (ext, callback) => {
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console.log('Source', 'Open file..')
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const input = document.createElement('input')
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input.type = 'file'
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input.onchange = (e) => {
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const file = e.target.files[0]
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if (file.name.indexOf(ext) < 0) { console.warn('Source', 'File is not ' + ext); return }
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this.cache = file
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this.load(this.cache, callback)
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}
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input.click()
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}
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this.save = (name, content, type = 'text/plain', callback) => {
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this.saveAs(name, content, type, callback)
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}
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this.saveAs = (name,ext, content, type = 'text/plain', callback) => {
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console.log('Source', 'Save new file..')
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this.download(name, ext,content, type, callback)
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}
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this.revert = () => {
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}
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// I/O
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this.load = (file, callback) => {
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const reader = new FileReader()
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reader.onload = (event) => {
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const res = event.target.result
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callback(res)
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}
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reader.readAsText(file, 'UTF-8')
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}
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this.download = (name, ext,content, type, settings = 'charset=utf-8') => {
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const link = document.createElement('a')
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link.setAttribute('download', `${name}-${timestamp()}.${ext}`)
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if (type === 'image/png' || type === 'image/jpeg') {
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link.setAttribute('href', content)
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} else {
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link.setAttribute('href', 'data:' + type + ';' + settings + ',' + encodeURIComponent(content))
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}
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link.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true, view: window }))
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}
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function timestamp (d = new Date(), e = new Date(d)) {
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const ms = e - d.setHours(0, 0, 0, 0)
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return (ms / 8640 / 10000).toFixed(6).substr(2, 6)
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}
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}
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