[longomatch] Remove even types with no events and no dashboard button

[Andoni Morales Alastruey <amorales src gnome org>]

commit a9cae73e5a85f4d13bea4375bf13ebc118b1765e
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Mon Dec 22 20:01:41 2014 +0100

    Remove even types with no events and no dashboard button
    
    When a button is removed in the dashboard, make sure we
    also remove the event type from the project list

 LongoMatch.Core/Store/Project.cs |   22 +++++++++++++++++-----
 1 files changed, 17 insertions(+), 5 deletions(-)
---
diff --git a/LongoMatch.Core/Store/Project.cs b/LongoMatch.Core/Store/Project.cs
index ccca01c..7df1ac6 100644
--- a/LongoMatch.Core/Store/Project.cs
+++ b/LongoMatch.Core/Store/Project.cs
@@ -299,15 +299,27 @@ namespace LongoMatch.Core.Store
 
                public void UpdateEventTypesAndTimers ()
                {
+                       IEnumerable<EventType> dashboardtypes, timelinetypes;
                        /* Timers */
                        IEnumerable<Timer> timers = Dashboard.List.OfType<TimerButton> ().Select (b => 
b.Timer);
                        Timers.AddRange (timers.Except (Timers));
                        
-                       /* Event Types */
-                       IEnumerable<EventType> types = Dashboard.List.OfType<EventButton> ().Select (b => 
b.EventType);
-                       EventTypes.AddRange (types.Except (EventTypes));
-                       types = Timeline.Select (t => t.EventType).Distinct ().Except (EventTypes);
-                       EventTypes.AddRange (types.Except (EventTypes));
+                       /* Update event types list that changes when the user adds or remove a
+                        * a new button to the dashboard or after importing a project with events
+                        * tagged with a different dashboard */
+                       dashboardtypes = Dashboard.List.OfType<EventButton> ().Select (b => b.EventType);
+                       /* Remove event types that have no events and are not in the dashboard anymore */
+                       foreach (EventType evt in EventTypes.Except (dashboardtypes).ToList ()) {
+                               if (evt == SubstitutionsEventType) {
+                                       continue;
+                               }
+                               if (Timeline.Count (e => e.EventType == evt) == 0) {
+                                       EventTypes.Remove (evt);
+                               }
+                       }
+                       EventTypes.AddRange (dashboardtypes.Except (EventTypes));
+                       timelinetypes = Timeline.Select (t => t.EventType).Distinct ().Except (EventTypes);
+                       EventTypes.AddRange (timelinetypes.Except (EventTypes));
                        if (!EventTypes.Contains (SubstitutionsEventType)) {
                                EventTypes.Add (SubstitutionsEventType);
                        }