[gnome-boxes] app: Populate new main window's collection

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 1f95ac9e4a6606be9c6edb792eefe00c88af56e2
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Aug 3 16:51:27 2014 +0200

    app: Populate new main window's collection
    
    This is needed to make multiple windows possible.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734486

 src/app.vala        |    6 ++++++
 src/collection.vala |    5 +++++
 2 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/src/app.vala b/src/app.vala
index 81eb63a..2917865 100644
--- a/src/app.vala
+++ b/src/app.vala
@@ -502,6 +502,7 @@ private class Boxes.App: Gtk.Application {
 
     public new bool remove_window (AppWindow window) {
         var initial_windows_count = windows.length ();
+        bool window_was_main = (window == main_window);
 
         if (window.current_item != null)
             (window.current_item as Machine).window = null;
@@ -513,6 +514,11 @@ private class Boxes.App: Gtk.Application {
         if (windows.length () == 0)
             return quit_app ();
 
+        // If the main window have been removed,
+        // populate the new main window's collection view.
+        if (window_was_main)
+            collection.populate (main_window.view);
+
         notify_property ("main-window");
 
         return initial_windows_count != windows.length ();
diff --git a/src/collection.vala b/src/collection.vala
index 8cd089a..975f4ef 100644
--- a/src/collection.vala
+++ b/src/collection.vala
@@ -48,6 +48,11 @@ private class Boxes.Collection: GLib.Object {
         items.remove (item);
         item_removed (item);
     }
+
+    public void populate (CollectionView view) {
+        for (uint i = 0 ; i < items.length ; i++)
+            view.add_item (items[i]);
+    }
 }
 
 private class Boxes.CollectionFilter: GLib.Object {