[gnome-documents] view: fix signal connection for visible view notification

[Cosimo Cecchi <cosimoc src gnome org>]

commit c0f4f3a4be008bb747fdb87dd4f39249464ea715
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Oct 10 18:22:54 2016 -0700

    view: fix signal connection for visible view notification
    
    This was lost when the code was moved from Embed to the View class.

 src/view.js |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/view.js b/src/view.js
index 75efa97..fbea78c 100644
--- a/src/view.js
+++ b/src/view.js
@@ -752,14 +752,14 @@ const View = new Lang.Class({
         this._search = new ViewContainer(WindowMode.WindowMode.SEARCH);
         this._stack.add_named(this._search, 'search');
 
-        this.connect('notify::visible-child',
-                     Lang.bind(this, this._onVisibleChildChanged));
+        this._stack.connect('notify::visible-child',
+                            Lang.bind(this, this._onVisibleChildChanged));
 
         this.show();
     },
 
     _onVisibleChildChanged: function() {
-        let visibleChild = this.visible_child;
+        let visibleChild = this._stack.visible_child;
         let windowMode;
 
         if (visibleChild == this._collections)