[tasque] Fix 'task not filtered out from task group'

[Antonius Riha <antoniusri src gnome org>]

commit 0f94cfc87544024d240cc5338334972fe7d53d78
Author: Antonius Riha <antoniusriha gmail com>
Date:   Sat Jan 19 21:21:55 2013 +0100

    Fix 'task not filtered out from task group'

 src/Addins/Backends/Dummy/DummyTask.cs   |   15 ++++++++++++---
 src/Addins/Backends/Rtm/RtmTask.cs       |   17 +++++++++++++----
 src/Addins/Backends/Sqlite/SqliteTask.cs |    2 ++
 3 files changed, 27 insertions(+), 7 deletions(-)
---
diff --git a/src/Addins/Backends/Dummy/DummyTask.cs b/src/Addins/Backends/Dummy/DummyTask.cs
index 83d979d..855a565 100644
--- a/src/Addins/Backends/Dummy/DummyTask.cs
+++ b/src/Addins/Backends/Dummy/DummyTask.cs
@@ -129,21 +129,21 @@ Logger.Debug ("Setting new task priority");
 		public override void Activate ()
 		{
 Logger.Debug ("DummyTask.Activate ()");
-			state = TaskState.Active;
+			SetState (TaskState.Active);
 			CompletionDate = DateTime.MinValue;
 		}
 		
 		public override void Complete ()
 		{
 			Logger.Debug ("DummyTask.Complete ()");
-			state = TaskState.Completed;
+			SetState (TaskState.Completed);
 			CompletionDate = DateTime.Now;
 		}
 		
 		public override void Delete ()
 		{
 Logger.Debug ("DummyTask.Delete ()");
-			state = TaskState.Deleted;
+			SetState (TaskState.Deleted);
 			backend.DeleteTask (this);
 		}
 		
@@ -161,5 +161,14 @@ Logger.Debug ("DummyTask.Delete ()");
 		}
 
 		#endregion // Public Methods
+
+		void SetState (TaskState value)
+		{
+			if (value == state)
+				return;
+			OnPropertyChanging ("State");
+			state = value;
+			OnPropertyChanged ("State");
+		}
 	}
 }
diff --git a/src/Addins/Backends/Rtm/RtmTask.cs b/src/Addins/Backends/Rtm/RtmTask.cs
index c36b707..f050562 100644
--- a/src/Addins/Backends/Rtm/RtmTask.cs
+++ b/src/Addins/Backends/Rtm/RtmTask.cs
@@ -247,7 +247,7 @@ namespace Tasque.Backends.Rtm
 		public override void Activate ()
 		{
 			Logger.Debug("Activating Task: " + Name);
-			state = TaskState.Active;
+			SetState (TaskState.Active);
 			CompletionDate = DateTime.MinValue;
 		}
 		
@@ -256,8 +256,8 @@ namespace Tasque.Backends.Rtm
 		/// </summary>
 		public override void Complete ()
 		{
-			Logger.Debug("Completing Task: " + Name);			
-			state = TaskState.Completed;
+			Logger.Debug("Completing Task: " + Name);
+			SetState (TaskState.Completed);
 			if(CompletionDate == DateTime.MinValue)
 				CompletionDate = DateTime.Now;
 		}
@@ -267,7 +267,7 @@ namespace Tasque.Backends.Rtm
 		/// </summary>
 		public override void Delete ()
 		{
-			state = TaskState.Deleted;
+			SetState (TaskState.Deleted);
 			rtmBackend.DeleteTask (this);
 		}
 		
@@ -318,5 +318,14 @@ namespace Tasque.Backends.Rtm
 		}		
 
 		#endregion // Public Methods
+
+		void SetState (TaskState value)
+		{
+			if (value == state)
+				return;
+			OnPropertyChanging ("State");
+			state = value;
+			OnPropertyChanged ("State");
+		}
 	}
 }
diff --git a/src/Addins/Backends/Sqlite/SqliteTask.cs b/src/Addins/Backends/Sqlite/SqliteTask.cs
index c12c8a5..43c2e78 100644
--- a/src/Addins/Backends/Sqlite/SqliteTask.cs
+++ b/src/Addins/Backends/Sqlite/SqliteTask.cs
@@ -144,9 +144,11 @@ namespace Tasque.Backends.Sqlite
 		{
 			get { return (TaskState) this.state; }
 			set {
+				OnPropertyChanging ("State");
 				this.state = (int) value;
 				string command = String.Format("UPDATE Tasks set State='{0}' where ID='{1}'", this.state, id);
 				backend.Database.ExecuteScalar(command);
+				OnPropertyChanged ("State");
 			}
 		}