[gnome-boxes] collection-view: Refactor Machine.info notify handler

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 2ff84ead04a225d7eee9706916d5a748db7afeef
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Fri Aug 28 18:29:57 2015 +0100

    collection-view: Refactor Machine.info notify handler
    
    Put code handling changes to Machine.info property, into a separate
    function. In a following patch, we'll be launching the same function for
    Machine.status change as well.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=753888

 src/collection-view.vala |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)
---
diff --git a/src/collection-view.vala b/src/collection-view.vala
index a72abb7..19a529d 100644
--- a/src/collection-view.vala
+++ b/src/collection-view.vala
@@ -167,11 +167,7 @@ private class Boxes.CollectionView: Gd.MainView, Boxes.ICollectionView, Boxes.UI
         });
         item.set_data<ulong> ("name_id", name_id);
 
-        var info_id = machine.notify["info"].connect (() => {
-            // apparently iter is stable after insertion/removal/sort
-            store.set (iter, ModelColumns.INFO, machine.info);
-            queue_draw ();
-        });
+        var info_id = machine.notify["info"].connect (on_machine_info_changed);
         item.set_data<ulong> ("info_id", info_id);
 
         setup_activity (iter, machine);
@@ -431,4 +427,13 @@ private class Boxes.CollectionView: Gd.MainView, Boxes.ICollectionView, Boxes.UI
 
         return true;
     }
+
+    private void on_machine_info_changed (GLib.Object object, GLib.ParamSpec spec) {
+        var machine = object as Machine;
+        var iter = machine.get_data<Gtk.TreeIter?> ("iter");
+        return_if_fail (iter != null);
+
+        store.set (iter, ModelColumns.INFO, machine.info);
+        queue_draw ();
+    }
 }