[longomatch] Fix disposing of timeline objects

[Andoni Morales Alastruey <amorales src gnome org>]

commit 7f886120599c4a113f60d379aab9a83f085a40d1
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Wed Aug 27 20:21:05 2014 +0200

    Fix disposing of timeline objects

 LongoMatch.Drawing/CanvasObjects/TimelineObject.cs |    3 +++
 LongoMatch.Drawing/Widgets/PlaysTimeline.cs        |    8 ++++++++
 2 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/LongoMatch.Drawing/CanvasObjects/TimelineObject.cs 
b/LongoMatch.Drawing/CanvasObjects/TimelineObject.cs
index b6d46b0..a96e2fe 100644
--- a/LongoMatch.Drawing/CanvasObjects/TimelineObject.cs
+++ b/LongoMatch.Drawing/CanvasObjects/TimelineObject.cs
@@ -50,6 +50,9 @@ namespace LongoMatch.Drawing.CanvasObjects
                
                protected override void Dispose (bool disposing)
                {
+                       foreach (TimeNodeObject tn in nodes) {
+                               tn.Dispose ();
+                       }
                        selectionBorderL.Dispose ();
                        selectionBorderR.Dispose ();
                        base.Dispose (disposing);
diff --git a/LongoMatch.Drawing/Widgets/PlaysTimeline.cs b/LongoMatch.Drawing/Widgets/PlaysTimeline.cs
index ff96824..fa737f3 100644
--- a/LongoMatch.Drawing/Widgets/PlaysTimeline.cs
+++ b/LongoMatch.Drawing/Widgets/PlaysTimeline.cs
@@ -45,6 +45,14 @@ namespace LongoMatch.Drawing.Widgets
                        Accuracy = Constants.TIMELINE_ACCURACY;
                        SelectionMode = MultiSelectionMode.MultipleWithModifier;
                }
+               
+               protected override void Dispose (bool disposing)
+               {
+                       foreach (CategoryTimeline ct in categories.Values) {
+                               ct.Dispose ();
+                       }
+                       base.Dispose (disposing);
+               }
 
                public void LoadProject (Project project, PlaysFilter filter)
                {