[gnome-calendar/ui-rewrite] month-view: implement GcalView::wil_add_event vfunc

[Erick Pérez Castellanos <erickpc src gnome org>]

commit 0fe2a5f7ff1dbf3eb18981db30b6ced8bced1cbd
Author: Erick Pérez Castellanos <erick red gmail com>
Date:   Sun Oct 5 19:57:30 2014 -0400

    month-view: implement GcalView::wil_add_event vfunc

 src/gcal-month-view.c |   24 +++++++++++++++++++++++-
 1 files changed, 23 insertions(+), 1 deletions(-)
---
diff --git a/src/gcal-month-view.c b/src/gcal-month-view.c
index 79f9000..f80e785 100644
--- a/src/gcal-month-view.c
+++ b/src/gcal-month-view.c
@@ -1304,7 +1304,29 @@ static gboolean
 gcal_month_view_will_add_event (GcalView        *view,
                                 GcalEventWidget *event)
 {
-  ;
+  GcalMonthViewPrivate *priv;
+
+  icaltimetype *start_date;
+  gboolean is_in_range;
+
+  const gchar* event_uuid;
+
+  g_return_val_if_fail (GCAL_IS_MONTH_VIEW (view), FALSE);
+  priv = gcal_month_view_get_instance_private (GCAL_MONTH_VIEW (view));
+
+  if (priv->date == NULL)
+    return FALSE;
+
+  start_date = gcal_event_widget_get_date (event);
+  is_in_range = (priv->date->month == start_date->month &&
+                 priv->date->year == start_date->year);
+  g_free (start_date);
+
+  if (!is_in_range)
+    return FALSE;
+
+  event_uuid = gcal_event_widget_peek_uuid (event);
+  return !(gcal_month_view_get_by_uuid (view, event_uuid) != NULL);
 }
 
 /* Public API */