[gnome-shell] remoteMenu: Add support for the submenu show requests

[Jasper St. Pierre <jstpierre src gnome org>]

commit c698dee0711b427f684987381831c64f4395c23a
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri May 10 14:32:58 2013 -0400

    remoteMenu: Add support for the submenu show requests
    
    This lets clients defer submenus showing until their submenu model
    is ready.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700257

 js/ui/popupMenu.js  |   25 ++++++++++++++++++++-----
 js/ui/remoteMenu.js |   29 ++++++++++++++++++++++++++++-
 2 files changed, 48 insertions(+), 6 deletions(-)
---
diff --git a/js/ui/popupMenu.js b/js/ui/popupMenu.js
index bfb950f..c3ac653 100644
--- a/js/ui/popupMenu.js
+++ b/js/ui/popupMenu.js
@@ -1516,15 +1516,30 @@ const PopupSubMenuMenuItem = new Lang.Class({
         this.parent();
     },
 
+    setSubmenuShown: function(open) {
+        if (open)
+            this.menu.open(BoxPointer.PopupAnimation.FULL);
+        else
+            this.menu.close(BoxPointer.PopupAnimation.FULL);
+    },
+
+    _setOpenState: function(open) {
+        this._setSubmenuShown(open);
+    },
+
+    _getOpenState: function() {
+        return this.menu.isOpen;
+    },
+
     _onKeyPressEvent: function(actor, event) {
         let symbol = event.get_key_symbol();
 
         if (symbol == Clutter.KEY_Right) {
-            this.menu.open(BoxPointer.PopupAnimation.FULL);
+            this._setOpenState(true);
             this.menu.actor.navigate_focus(null, Gtk.DirectionType.DOWN, false);
             return true;
-        } else if (symbol == Clutter.KEY_Left && this.menu.isOpen) {
-            this.menu.close();
+        } else if (symbol == Clutter.KEY_Left && this._getOpenState()) {
+            this._setOpenState(false);
             return true;
         }
 
@@ -1532,11 +1547,11 @@ const PopupSubMenuMenuItem = new Lang.Class({
     },
 
     activate: function(event) {
-        this.menu.open(BoxPointer.PopupAnimation.FULL);
+        this._setOpenState(true);
     },
 
     _onButtonReleaseEvent: function(actor) {
-        this.menu.toggle();
+        this._setOpenState(!this._getOpenState());
     }
 });
 
diff --git a/js/ui/remoteMenu.js b/js/ui/remoteMenu.js
index 09ae066..144dbdb 100644
--- a/js/ui/remoteMenu.js
+++ b/js/ui/remoteMenu.js
@@ -60,12 +60,31 @@ const RemoteMenuSeparatorItemMapper = new Lang.Class({
     },
 });
 
+const RequestSubMenu = new Lang.Class({
+    Name: 'RequestSubMenu',
+    Extends: PopupMenu.PopupSubMenuMenuItem,
+
+    _init: function() {
+        this.parent('');
+        this._requestOpen = false;
+    },
+
+    _setOpenState: function(open) {
+        this.emit('request-open', open);
+        this._requestOpen = open;
+    },
+
+    _getOpenState: function() {
+        return this._requestOpen;
+    },
+});
+
 const RemoteMenuSubmenuItemMapper = new Lang.Class({
     Name: 'RemoteMenuSubmenuItemMapper',
 
     _init: function(trackerItem) {
         this._trackerItem = trackerItem;
-        this.menuItem = new PopupMenu.PopupSubMenuMenuItem('');
+        this.menuItem = new RequestSubMenu();
         this._trackerItem.connect('notify::label', Lang.bind(this, this._updateLabel));
         this._updateLabel();
 
@@ -73,6 +92,14 @@ const RemoteMenuSubmenuItemMapper = new Lang.Class({
                                                                _insertItem.bind(null, this.menuItem.menu),
                                                                _removeItem.bind(null, this.menuItem.menu));
 
+        this.menuItem.connect('request-open', Lang.bind(this, function(menu, open) {
+            this._trackerItem.request_submenu_shown(open);
+        }));
+
+        this._trackerItem.connect('notify::submenu-shown', Lang.bind(this, function() {
+            this.menuItem.setSubmenuShown(this._trackerItem.get_submenu_shown());
+        }));
+
         this.menuItem.connect('destroy', function() {
             trackerItem.run_dispose();
         });