Remove refs to single-instance objects in parser

js/term/index.js

@@ -26,6 +26,30 @@ module.exports = function (opts) {
     buttons.update()
   })
 
+  screen.on('TEMP:hide-load-failed-msg', () => {
+    let scr = qs('#screen')
+    let errmsg = qs('#load-failed')
+    if (scr) scr.classList.remove('failed')
+    if (errmsg) errmsg.parentNode.removeChild(errmsg)
+  })
+
+  screen.on('TEMP:show-config-links', show => {
+    let buttons = [...document.querySelectorAll('.x-term-conf-btn')]
+    if (show) buttons.forEach(x => x.classList.remove('hidden'))
+    else buttons.forEach(x => x.classList.add('hidden'))
+  })
+
+  screen.on('TEMP:show-buttons', show => {
+    if (show) qs('#action-buttons').classList.remove('hidden')
+    else qs('#action-buttons').classList.add('hidden')
+  })
+
+  screen.on('TEMP:update-title', text => {
+    qs('#screen-title').textContent = text
+    if (!text) text = 'Terminal'
+    qs('title').textContent = `${text} :: ESPTerm`
+  })
+
   let showSplashTimeout = null
   let showSplash = (obj, delay = 250) => {
     clearTimeout(showSplashTimeout)

js/term/screen.js

@@ -60,7 +60,8 @@ module.exports = class TermScreen extends EventEmitter {
       gridScaleY: 1.2,
       fitIntoWidth: 0,
       fitIntoHeight: 0,
-      debug: false,
+      // two bits. LSB: debug enabled by user, MSB: debug enabled by server
+      debug: 0,
       graphics: 0,
       statusScreen: null
     }
@@ -85,6 +86,8 @@ module.exports = class TermScreen extends EventEmitter {
       fitIntoHeight: 0
     }
 
+    const self = this
+
     // current selection
     this.selection = {
       // when false, this will prevent selection in favor of mouse events,
@@ -93,14 +96,21 @@ module.exports = class TermScreen extends EventEmitter {
 
       // selection start and end (x, y) tuples
       start: [0, 0],
-      end: [0, 0]
+      end: [0, 0],
+
+      setSelectable (value) {
+        if (value !== this.selectable) {
+          this.selectable = value
+          if (value) self.classList.add('selectable')
+          else self.classList.remove('selectable')
+        }
+      }
     }
 
     // mouse features
     this.mouseMode = { clicks: false, movement: false }
 
     // make writing to window update size and draw
-    const self = this
     this.window = new Proxy(this._window, {
       set (target, key, value, receiver) {
         if (target[key] !== value) {

js/term/screen_parser.js

@@ -1,6 +1,3 @@
-const $ = require('../lib/chibi')
-const { qs } = require('../utils')
-
 const {
   ATTR_FG,
   ATTR_BG,
@@ -66,10 +63,7 @@ module.exports = class ScreenParser {
    */
   hideLoadFailedMsg () {
     if (!this.contentLoaded) {
-      let scr = qs('#screen')
-      let errmsg = qs('#load-failed')
-      if (scr) scr.classList.remove('failed')
-      if (errmsg) errmsg.parentNode.removeChild(errmsg)
+      this.screen.emit('TEMP:hide-load-failed-msg')
       this.contentLoaded = true
     }
   }
@@ -150,8 +144,7 @@ module.exports = class ScreenParser {
         }
 
         this.screen.input.setMouseMode(trackMouseClicks, trackMouseMovement)
-        this.screen.selection.selectable = !trackMouseClicks && !trackMouseMovement
-        $(this.screen.canvas).toggleClass('selectable', this.screen.selection.selectable)
+        this.screen.selection.setSelectable(!trackMouseClicks && !trackMouseMovement)
         this.screen.mouseMode = {
           clicks: trackMouseClicks,
           movement: trackMouseMovement
@@ -160,15 +153,15 @@ module.exports = class ScreenParser {
         const showButtons = !!(attributes & OPT_SHOW_BUTTONS)
         const showConfigLinks = !!(attributes & OPT_SHOW_CONFIG_LINKS)
 
-        $('.x-term-conf-btn').toggleClass('hidden', !showConfigLinks)
-        $('#action-buttons').toggleClass('hidden', !showButtons)
+        this.screen.emit('TEMP:show-config-links', showConfigLinks)
+        this.screen.emit('TEMP:show-buttons', showButtons)
 
         this.screen.bracketedPaste = !!(attributes & OPT_BRACKETED_PASTE)
         this.screen.reverseVideo = !!(attributes & OPT_REVERSE_VIDEO)
 
         const debugbar = !!(attributes & OPT_DEBUGBAR)
-        // TODO do something with debugbar
 
+        this.screen.window.debug &= 0b01 | (+debugbar < 1)
       } else if (topic === TOPIC_CURSOR) {
 
         // cursor position
@@ -193,12 +186,7 @@ module.exports = class ScreenParser {
 
         this.screen.renderer.scheduleDraw('cursor-moved')
       } else if (topic === TOPIC_TITLE) {
-
-        text = collectOneTerminatedString()
-        qs('#screen-title').textContent = text
-        if (text.length === 0) text = 'Terminal'
-        qs('title').textContent = `${text} :: ESPTerm`
-
+        this.screen.emit('TEMP:update-title', collectOneTerminatedString())
       } else if (topic === TOPIC_BUTTONS) {
         const count = du(strArray[ci++])