apps-menu, places-menu, drive-menu: port to new extension API

main() has been replaced by init(), enable() and disable()
committing together as changes are very similar in nature

extensions/apps-menu/extension.js

@@ -7,8 +7,6 @@ const PanelMenu = imports.ui.panelMenu;
 const Shell = imports.gi.Shell;
 const Lang = imports.lang;
 const ICON_SIZE = 28;
-const Gettext = imports.gettext.domain('gnome-shell-extensions');
-const _ = Gettext.gettext;
 
 let appsys = Shell.AppSystem.get_default();
 
@@ -89,9 +87,19 @@ ApplicationsButton.prototype = {
 };
 
 
-function main(metadata) {
-    let  appsMenuButton = new ApplicationsButton();
+function init(metadata) {
+    // nothing to do here
+}
+
+let appsMenuButton;
+
+function enable() {
+    appsMenuButton = new ApplicationsButton();
     Main.panel._leftBox.insert_actor(appsMenuButton.actor, 1);
     Main.panel._leftBox.child_set(appsMenuButton.actor, { y_fill : true } );
     Main.panel._menus.addMenu(appsMenuButton.menu);
+}
+
+function disable() {
+    appsMenuButton.destroy();
 }

extensions/drive-menu/extension.js

@@ -90,9 +90,14 @@ DriveMenu.prototype = {
 }
 
 // Put your extension initialization code here
-function main(metadata) {
+function init(metadata) {
     imports.gettext.bindtextdomain('gnome-shell-extensions', metadata.localedir);
-
-    Panel.STANDARD_TRAY_ICON_ORDER.unshift('drive-menu');
-    Panel.STANDARD_TRAY_ICON_SHELL_IMPLEMENTATION['drive-menu'] = DriveMenu;
+}
+
+function enable() {
+    Main.panel.addToStatusArea('drive-menu', new DriveMenu);
+}
+
+function disable() {
+    Main.panel.removeFromStatusArea('drive-menu');
 }

extensions/places-menu/extension.js

@@ -113,9 +113,15 @@ PlacesMenu.prototype = {
 };
 
 
-function main(metadata) {
+function init(metadata) {
     imports.gettext.bindtextdomain('gnome-shell-extensions', metadata.localedir);
-
     Panel.STANDARD_TRAY_ICON_ORDER.unshift('places-menu');
-    Panel.STANDARD_TRAY_ICON_SHELL_IMPLEMENTATION['places-menu'] = PlacesMenu;
+}
+
+function enable() {
+    Main.panel.addToStatusArea('places-menu', new PlacesMenu);
+}
+
+function disable() {
+    Main.panel.removeFromStatusArea('places-menu');
 }