[gnome-builder] layout: add helper to count views

[Christian Hergert <chergert src gnome org>]

commit 21fbd38c2be1f06ca45e1b7a647c1f6d4886e00e
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 17 02:41:11 2017 -0700

    layout: add helper to count views

 libide/layout/ide-layout-grid.c |   21 +++++++++++++++++++++
 libide/layout/ide-layout-grid.h |    1 +
 2 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/libide/layout/ide-layout-grid.c b/libide/layout/ide-layout-grid.c
index 45e8688..595327c 100644
--- a/libide/layout/ide-layout-grid.c
+++ b/libide/layout/ide-layout-grid.c
@@ -863,6 +863,8 @@ ide_layout_grid_stack_items_changed (IdeLayoutGrid  *self,
                                       removed,
                                       added);
 
+          g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CURRENT_VIEW]);
+
           return;
         }
 
@@ -926,3 +928,22 @@ _ide_layout_grid_stack_removed (IdeLayoutGrid  *self,
         }
     }
 }
+
+static void
+count_views_cb (GtkWidget *widget,
+                gpointer   data)
+{
+  (*(guint *)data)++;
+}
+
+guint
+ide_layout_grid_count_views (IdeLayoutGrid *self)
+{
+  guint count = 0;
+
+  g_return_val_if_fail (IDE_IS_LAYOUT_GRID (self), 0);
+
+  ide_layout_grid_foreach_view (self, count_views_cb, &count);
+
+  return count;
+}
diff --git a/libide/layout/ide-layout-grid.h b/libide/layout/ide-layout-grid.h
index a14d1ac..9492a44 100644
--- a/libide/layout/ide-layout-grid.h
+++ b/libide/layout/ide-layout-grid.h
@@ -54,6 +54,7 @@ void                 ide_layout_grid_set_current_column (IdeLayoutGrid       *se
                                                          IdeLayoutGridColumn *column);
 IdeLayoutStack      *ide_layout_grid_get_current_stack  (IdeLayoutGrid       *self);
 IdeLayoutView       *ide_layout_grid_get_current_view   (IdeLayoutGrid       *self);
+guint                ide_layout_grid_count_views        (IdeLayoutGrid       *self);
 void                 ide_layout_grid_foreach_view       (IdeLayoutGrid       *self,
                                                          GtkCallback          callback,
                                                          gpointer             user_data);