From c495ff8ad8a630be2c21e940f8eee6ff6aa00ae8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Mon, 22 Oct 2012 17:39:19 +0200
Subject: [PATCH] overview: Expose scroll-events

Using the scroll wheel in the window picker should switch workspaces.
As the picker doesn't have a visible boundary though, it makes sense
to accept scroll-event for the entire overview area. Rather than
making the overview's main actor public, expose scroll-events via
a signal.

https://bugzilla.gnome.org/show_bug.cgi?id=686639
---
 js/ui/overview.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/js/ui/overview.js b/js/ui/overview.js
index 755dfb4b2..13f348aeb 100644
--- a/js/ui/overview.js
+++ b/js/ui/overview.js
@@ -125,6 +125,7 @@ const Overview = new Lang.Class({
         this._overview._delegate = this;
 
         this._group = new St.BoxLayout({ name: 'overview-group',
+                                         reactive: true,
                                          clip_to_allocation: true });
 
         this._backgroundGroup = new Meta.BackgroundGroup();
@@ -164,6 +165,7 @@ const Overview = new Lang.Class({
         Main.xdndHandler.connect('drag-end', Lang.bind(this, this._onDragEnd));
 
         global.screen.connect('restacked', Lang.bind(this, this._onRestacked));
+        this._group.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
 
         this._windowSwitchTimeoutId = 0;
         this._windowSwitchTimestamp = 0;
@@ -379,6 +381,10 @@ const Overview = new Lang.Class({
         return DND.DragMotionResult.CONTINUE;
     },
 
+    _onScrollEvent: function(actor, event) {
+        this.emit('scroll-event', event);
+    },
+
     addAction: function(action) {
         if (this.isDummy)
             return;