Added old files

sources/scripts/lib/theme.js

@@ -0,0 +1,128 @@
+'use strict'
+
+function Theme (_default) {
+  const themer = this
+
+  this.active = _default
+
+  this.el = document.createElement('style')
+  this.el.type = 'text/css'
+
+  this.install = function (host = document.body, callback) {
+    console.log('Theme', 'Installing..')
+    host.appendChild(this.el)
+    this.callback = callback
+  }
+
+  this.start = function () {
+    console.log('Theme', 'Starting..')
+    if (isJson(localStorage.theme)) {
+      const storage = JSON.parse(localStorage.theme)
+      if (validate(storage)) {
+        console.log('Theme', 'Found theme in localStorage!')
+        this.load(storage)
+        return
+      }
+    }
+    this.load(_default)
+  }
+
+  this.load = function (data) {
+    const theme = parse(data)
+    if (!validate(theme)) { console.warn('Theme', 'Not a theme', theme); return }
+    console.log('Theme', `Loading theme with background ${theme.background}.`)
+    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}; }`
+    localStorage.setItem('theme', JSON.stringify(theme))
+    this.active = theme
+    if (this.callback) {
+      this.callback()
+    }
+  }
+
+  this.reset = function () {
+    this.load(_default)
+  }
+
+  function parse (any) {
+    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) }
+    return null
+  }
+
+  // Drag
+
+  this.drag = function (e) {
+    e.stopPropagation()
+    e.preventDefault()
+    e.dataTransfer.dropEffect = 'copy'
+  }
+
+  this.drop = function (e) {
+    e.preventDefault()
+    e.stopPropagation()
+    const file = e.dataTransfer.files[0]
+    if (!file || !file.name) { console.warn('Theme', 'Unnamed file.'); return }
+    if (file.name.indexOf('.thm') < 0 && file.name.indexOf('.svg') < 0) { console.warn('Theme', 'Skipped, not a theme'); return }
+    const reader = new FileReader()
+    reader.onload = function (e) {
+      themer.load(e.target.result)
+    }
+    reader.readAsText(file)
+  }
+
+  this.open = function () {
+    const fs = require('fs')
+    const { dialog, app } = require('electron').remote
+    const paths = dialog.showOpenDialog(app.win, { properties: ['openFile'], filters: [{ name: 'Themes', extensions: ['svg'] }] })
+    if (!paths) { console.log('Nothing to load') }
+    fs.readFile(paths[0], 'utf8', function (err, data) {
+      if (err) throw err
+      themer.load(data)
+    })
+  }
+
+  window.addEventListener('dragover', this.drag)
+  window.addEventListener('drop', this.drop)
+
+  // Helpers
+
+  function validate (json) {
+    if (!json) { return false }
+    if (!json.background) { return false }
+    if (!json.f_high) { return false }
+    if (!json.f_med) { return false }
+    if (!json.f_low) { return false }
+    if (!json.f_inv) { return false }
+    if (!json.b_high) { return false }
+    if (!json.b_med) { return false }
+    if (!json.b_low) { return false }
+    if (!json.b_inv) { return false }
+    return true
+  }
+
+  function extract (text) {
+    const svg = new DOMParser().parseFromString(text, 'text/xml')
+    try {
+      return {
+        background: svg.getElementById('background').getAttribute('fill'),
+        f_high: svg.getElementById('f_high').getAttribute('fill'),
+        f_med: svg.getElementById('f_med').getAttribute('fill'),
+        f_low: svg.getElementById('f_low').getAttribute('fill'),
+        f_inv: svg.getElementById('f_inv').getAttribute('fill'),
+        b_high: svg.getElementById('b_high').getAttribute('fill'),
+        b_med: svg.getElementById('b_med').getAttribute('fill'),
+        b_low: svg.getElementById('b_low').getAttribute('fill'),
+        b_inv: svg.getElementById('b_inv').getAttribute('fill')
+      }
+    } catch (err) {
+      console.warn('Theme', 'Incomplete SVG Theme', err)
+    }
+  }
+
+  function isJson (text) {
+    try { JSON.parse(text); return true } catch (error) { return false }
+  }
+
+  function isHtml (text) {
+    try { new DOMParser().parseFromString(text, 'text/xml'); return true } catch (error) { return false }
+  }
+}