[gnome-shell] messageTray: Add bottom drag gesture to popup the message tray

[Carlos Garnacho <carlosg src gnome org>]

commit 285a7467d04a932433a20c6f87e9eef773d9c845
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Jun 25 17:50:02 2014 +0200

    messageTray: Add bottom drag gesture to popup the message tray
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735625

 js/ui/messageTray.js |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index beabb8a..62c77e4 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -15,6 +15,7 @@ const Signals = imports.signals;
 const St = imports.gi.St;
 const Tp = imports.gi.TelepathyGLib;
 
+const EdgeDragAction = imports.ui.edgeDragAction;
 const BoxPointer = imports.ui.boxpointer;
 const CtrlAltTab = imports.ui.ctrlAltTab;
 const GnomeSession = imports.misc.gnomeSession;
@@ -1933,6 +1934,10 @@ const MessageTray = new Lang.Class({
 
         this._messageTrayMenuButton = new MessageTrayMenuButton(this);
         this.actor.add_actor(this._messageTrayMenuButton.actor);
+
+        let gesture = new EdgeDragAction.EdgeDragAction(St.Side.BOTTOM);
+        gesture.connect('activated', Lang.bind(this, this.toggle));
+        global.stage.add_action(gesture);
     },
 
     close: function() {