cleanup: Port non-GObject classes to JS6 classes

ES6 finally adds standard class syntax to the language, so we can
replace our custom Lang.Class framework with the new syntax. Any
classes that inherit from GObject will need special treatment,
so limit the port to regular javascript classes for now.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/361

js/ui/components/autorunManager.js

@@ -1,6 +1,5 @@
 // -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
 
-const Lang = imports.lang;
 const Gio = imports.gi.Gio;
 const St = imports.gi.St;
 
@@ -84,13 +83,11 @@ function HotplugSniffer() {
                                    '/org/gnome/Shell/HotplugSniffer');
 }
 
-var ContentTypeDiscoverer = new Lang.Class({
-    Name: 'ContentTypeDiscoverer',
-
-    _init(callback) {
+var ContentTypeDiscoverer = class {
+    constructor(callback) {
         this._callback = callback;
         this._settings = new Gio.Settings({ schema_id: SETTINGS_SCHEMA });
-    },
+    }
 
     guessContentTypes(mount) {
         let autorunEnabled = !this._settings.get_boolean(SETTING_DISABLE_AUTORUN);
@@ -103,7 +100,7 @@ var ContentTypeDiscoverer = new Lang.Class({
         } else {
             this._emitCallback(mount, []);
         }
-    },
+    }
 
     _onContentTypeGuessed(mount, res) {
         let contentTypes = [];
@@ -126,7 +123,7 @@ var ContentTypeDiscoverer = new Lang.Class({
                      this._emitCallback(mount, contentTypes);
                  });
         }
-    },
+    }
 
     _emitCallback(mount, contentTypes) {
         if (!contentTypes)
@@ -150,27 +147,25 @@ var ContentTypeDiscoverer = new Lang.Class({
 
         this._callback(mount, apps, contentTypes);
     }
-});
+};
 
-var AutorunManager = new Lang.Class({
-    Name: 'AutorunManager',
-
-    _init() {
+var AutorunManager = class {
+    constructor() {
         this._session = new GnomeSession.SessionManager();
         this._volumeMonitor = Gio.VolumeMonitor.get();
 
         this._dispatcher = new AutorunDispatcher(this);
-    },
+    }
 
     enable() {
         this._mountAddedId = this._volumeMonitor.connect('mount-added', this._onMountAdded.bind(this));
         this._mountRemovedId = this._volumeMonitor.connect('mount-removed', this._onMountRemoved.bind(this));
-    },
+    }
 
     disable() {
         this._volumeMonitor.disconnect(this._mountAddedId);
         this._volumeMonitor.disconnect(this._mountRemovedId);
-    },
+    }
 
     _onMountAdded(monitor, mount) {
         // don't do anything if our session is not the currently
@@ -182,21 +177,19 @@ var AutorunManager = new Lang.Class({
             this._dispatcher.addMount(mount, apps, contentTypes);
         });
         discoverer.guessContentTypes(mount);
-    },
+    }
 
     _onMountRemoved(monitor, mount) {
         this._dispatcher.removeMount(mount);
     }
-});
+};
 
-var AutorunDispatcher = new Lang.Class({
-    Name: 'AutorunDispatcher',
-
-    _init(manager) {
+var AutorunDispatcher = class {
+    constructor(manager) {
         this._manager = manager;
         this._sources = [];
         this._settings = new Gio.Settings({ schema_id: SETTINGS_SCHEMA });
-    },
+    }
 
     _getAutorunSettingForType(contentType) {
         let runApp = this._settings.get_strv(SETTING_START_APP);
@@ -212,7 +205,7 @@ var AutorunDispatcher = new Lang.Class({
             return AutorunSetting.FILES;
 
         return AutorunSetting.ASK;
-    },
+    }
 
     _getSourceForMount(mount) {
         let filtered = this._sources.filter(source => (source.mount == mount));
@@ -224,7 +217,7 @@ var AutorunDispatcher = new Lang.Class({
             return filtered[0];
 
         return null;
-    },
+    }
 
     _addSource(mount, apps) {
         // if we already have a source showing for this 
@@ -234,7 +227,7 @@ var AutorunDispatcher = new Lang.Class({
      
         // add a new source
         this._sources.push(new AutorunSource(this._manager, mount, apps));
-    },
+    }
 
     addMount(mount, apps, contentTypes) {
         // if autorun is disabled globally, return
@@ -272,7 +265,7 @@ var AutorunDispatcher = new Lang.Class({
         // but we failed launching the default app or the default file manager
         if (!success)
             this._addSource(mount, apps);
-    },
+    }
 
     removeMount(mount) {
         let source = this._getSourceForMount(mount);
@@ -284,45 +277,39 @@ var AutorunDispatcher = new Lang.Class({
         // destroy the notification source
         source.destroy();
     }
-});
+};
 
-var AutorunSource = new Lang.Class({
-    Name: 'AutorunSource',
-    Extends: MessageTray.Source,
+var AutorunSource = class extends MessageTray.Source {
+    constructor(manager, mount, apps) {
+        super(mount.get_name());
 
-    _init(manager, mount, apps) {
         this._manager = manager;
         this.mount = mount;
         this.apps = apps;
 
-        this.parent(mount.get_name());
-
         this._notification = new AutorunNotification(this._manager, this);
 
         // add ourselves as a source, and popup the notification
         Main.messageTray.add(this);
         this.notify(this._notification);
-    },
+    }
 
     getIcon() {
         return this.mount.get_icon();
-    },
+    }
 
     _createPolicy() {
         return new MessageTray.NotificationApplicationPolicy('org.gnome.Nautilus');
     }
-});
+};
 
-var AutorunNotification = new Lang.Class({
-    Name: 'AutorunNotification',
-    Extends: MessageTray.Notification,
-
-    _init(manager, source) {
-        this.parent(source, source.title);
+var AutorunNotification = class extends MessageTray.Notification {
+    constructor(manager, source) {
+        super(source, source.title);
 
         this._manager = manager;
         this._mount = source.mount;
-    },
+    }
 
     createBanner() {
         let banner = new MessageTray.NotificationBanner(this);
@@ -335,7 +322,7 @@ var AutorunNotification = new Lang.Class({
         });
 
         return banner;
-    },
+    }
 
     _buttonForApp(app) {
         let box = new St.BoxLayout();
@@ -362,14 +349,14 @@ var AutorunNotification = new Lang.Class({
         });
 
         return button;
-    },
+    }
 
     activate() {
-        this.parent();
+        super.activate();
 
         let app = Gio.app_info_get_default_for_type('inode/directory', false);
         startAppForMount(app, this._mount);
     }
-});
+};
 
 var Component = AutorunManager;