128 lines
4.1 KiB
JavaScript
128 lines
4.1 KiB
JavaScript
'use strict'
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function Theme (_default) {
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const themer = this
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this.active = _default
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this.el = document.createElement('style')
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this.el.type = 'text/css'
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this.install = function (host = document.body, callback) {
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host.appendChild(this.el)
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this.callback = callback
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}
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this.start = function () {
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console.log('Theme', 'Starting..')
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if (isJson(localStorage.theme)) {
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const storage = JSON.parse(localStorage.theme)
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if (validate(storage)) {
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console.log('Theme', 'Loading localStorage..')
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this.load(storage)
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return
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}
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}
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this.load(_default)
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}
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this.load = function (data) {
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const theme = parse(data)
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if (!validate(theme)) { console.warn('Theme', 'Not a theme', theme); return }
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console.log('Theme', `Loaded theme!`)
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this.el.innerHTML = `:root { --background: ${theme.background}; --f_high: ${theme.f_high}; --f_med: ${theme.f_med}; --f_low: ${theme.f_low}; --f_inv: ${theme.f_inv}; --b_high: ${theme.b_high}; --b_med: ${theme.b_med}; --b_low: ${theme.b_low}; --b_inv: ${theme.b_inv}; }`
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localStorage.setItem('theme', JSON.stringify(theme))
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this.active = theme
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if (this.callback) {
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this.callback()
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}
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}
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this.reset = function () {
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this.load(_default)
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}
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function parse (any) {
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if (any && any.background) { return any } else if (any && any.data) { return any.data } else if (any && isJson(any)) { return JSON.parse(any) } else if (any && isHtml(any)) { return extract(any) }
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return null
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}
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// Drag
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this.drag = function (e) {
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e.stopPropagation()
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e.preventDefault()
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e.dataTransfer.dropEffect = 'copy'
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}
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this.drop = function (e) {
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e.preventDefault()
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e.stopPropagation()
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const file = e.dataTransfer.files[0]
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if (!file || !file.name) { console.warn('Theme', 'Unnamed file.'); return }
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if (file.name.indexOf('.thm') < 0 && file.name.indexOf('.svg') < 0) { console.warn('Theme', 'Skipped, not a theme'); return }
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const reader = new FileReader()
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reader.onload = function (e) {
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themer.load(e.target.result)
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}
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reader.readAsText(file)
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}
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this.open = function () {
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const fs = require('fs')
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const { dialog, app } = require('electron').remote
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let paths = dialog.showOpenDialog(app.win, { properties: ['openFile'], filters: [{ name: 'Themes', extensions: ['svg'] }] })
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if (!paths) { console.log('Nothing to load'); return }
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fs.readFile(paths[0], 'utf8', function (err, data) {
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if (err) throw err
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themer.load(data)
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})
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}
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window.addEventListener('dragover', this.drag)
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window.addEventListener('drop', this.drop)
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// Helpers
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function validate (json) {
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if (!json) { return false }
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if (!json.background) { return false }
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if (!json.f_high) { return false }
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if (!json.f_med) { return false }
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if (!json.f_low) { return false }
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if (!json.f_inv) { return false }
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if (!json.b_high) { return false }
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if (!json.b_med) { return false }
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if (!json.b_low) { return false }
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if (!json.b_inv) { return false }
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return true
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}
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function extract (text) {
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const svg = new DOMParser().parseFromString(text, 'text/xml')
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try {
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return {
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'background': svg.getElementById('background').getAttribute('fill'),
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'f_high': svg.getElementById('f_high').getAttribute('fill'),
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'f_med': svg.getElementById('f_med').getAttribute('fill'),
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'f_low': svg.getElementById('f_low').getAttribute('fill'),
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'f_inv': svg.getElementById('f_inv').getAttribute('fill'),
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'b_high': svg.getElementById('b_high').getAttribute('fill'),
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'b_med': svg.getElementById('b_med').getAttribute('fill'),
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'b_low': svg.getElementById('b_low').getAttribute('fill'),
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'b_inv': svg.getElementById('b_inv').getAttribute('fill')
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}
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} catch (err) {
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console.warn('Theme', 'Incomplete SVG Theme', err)
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}
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}
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function isJson (text) {
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try { JSON.parse(text); return true } catch (error) { return false }
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}
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function isHtml (text) {
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try { new DOMParser().parseFromString(text, 'text/xml'); return true } catch (error) { return false }
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}
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}
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