2019-11-02 14:55:38 -04:00

80 lines
1.8 KiB
JavaScript

'use strict'
function Acels () {
this.all = {}
this.install = (host = window) => {
host.addEventListener('keydown', this.onKeyDown, false)
host.addEventListener('keyup', this.onKeyUp, false)
}
this.set = (type, name, key, downfn, upfn) => {
if (this.all[key]) { console.warn('Acels', `Trying to overwrite ${this.all[key].name}, with ${name}.`) }
this.all[key] = { type, name, downfn, upfn, key }
}
this.get = (key) => {
return this.all[key]
}
this.sort = () => {
const h = {}
for (const item of Object.values(this.all)) {
if (!h[item.type]) { h[item.type] = [] }
h[item.type].push(item)
}
return h
}
this.convert = (event) => {
const key = event.key.substr(0, 1).toUpperCase() + event.key.substr(1)
if ((event.ctrlKey || event.metaKey) && event.shiftKey) {
return `CmdOrCtrl+Shift+${key}`
}
if (event.shiftKey) {
return `Shift+${key}`
}
if (event.ctrlKey || event.metaKey) {
return `CmdOrCtrl+${key}`
}
return key
}
this.onKeyDown = (e) => {
const target = this.get(this.convert(e))
if (!target || !target.downfn) { return }
target.downfn()
e.preventDefault()
}
this.onKeyUp = (e) => {
const target = this.get(this.convert(e))
if (!target || !target.upfn) { return }
target.upfn()
e.preventDefault()
}
this.toMarkdown = () => {
const types = this.sort()
let text = ''
for (const type in types) {
text += `\n### ${type}\n\n`
for (const item of types[type]) {
text += `- \`${item.key}\`: ${item.info}\n`
}
}
return text.trim()
}
this.toString = () => {
const types = this.sort()
let text = ''
for (const type in types) {
for (const item of types[type]) {
text += `${type}: ${item.name} | ${item.key}\n`
}
}
return text.trim()
}
}