[california] Ensure day-spanning events sort to top of Month cell: Bug #732224

[Jim Nelson <jnelson src gnome org>]

commit fd4d9b4a85ddf0d097a01dda97f9681e7dd675b6
Author: Jim Nelson <jim yorba org>
Date:   Wed Jun 25 13:33:57 2014 -0700

    Ensure day-spanning events sort to top of Month cell: Bug #732224

 src/view/common/common-events-cell.vala |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/src/view/common/common-events-cell.vala b/src/view/common/common-events-cell.vala
index b25fe81..0e4ec52 100644
--- a/src/view/common/common-events-cell.vala
+++ b/src/view/common/common-events-cell.vala
@@ -149,9 +149,15 @@ internal abstract class EventsCell : Gtk.EventBox, InstanceContainer {
         if (a == b)
             return 0;
         
-        if (!a.is_day_spanning && !b.is_day_spanning)
-            return a.compare_to(b);
-        
+        // * if neither are day spanning (i.e. all-day or timed that cross midnight) fall back on
+        // regular comparison
+        // * if one is day-spanning but not the other, day-spanning floats to the top
+        if (!a.is_day_spanning)
+            return !b.is_day_spanning ? a.compare_to(b) : 1;
+        else if (!b.is_day_spanning)
+            return -1;
+        
+        // both are day-spanning use algorithm described above to prevent gaps
         Calendar.DateSpan a_span = a.get_event_date_span(Calendar.Timezone.local);
         Calendar.DateSpan b_span = b.get_event_date_span(Calendar.Timezone.local);