[smuxi] Engine: provide enumerator based MessageBufferBase.CopyTo() as default implementation

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit ddc12c6a553d704fe068790749c09f220816e918
Author: Mirco Bauer <meebey meebey net>
Date:   Wed Feb 26 23:06:04 2014 +0100

    Engine: provide enumerator based MessageBufferBase.CopyTo() as default implementation

 src/Engine/MessageBuffers/Db4oMessageBuffer.cs   |   12 ------------
 src/Engine/MessageBuffers/MessageBufferBase.cs   |   13 ++++++++++++-
 src/Engine/MessageBuffers/SqliteMessageBuffer.cs |    5 -----
 3 files changed, 12 insertions(+), 18 deletions(-)
---
diff --git a/src/Engine/MessageBuffers/Db4oMessageBuffer.cs b/src/Engine/MessageBuffers/Db4oMessageBuffer.cs
index b94b22a..d154275 100644
--- a/src/Engine/MessageBuffers/Db4oMessageBuffer.cs
+++ b/src/Engine/MessageBuffers/Db4oMessageBuffer.cs
@@ -161,18 +161,6 @@ namespace Smuxi.Engine
             return IndexOf(item) != -1;
         }
 
-        public override void CopyTo(MessageModel[] array, int arrayIndex)
-        {
-            if (array == null) {
-                throw new ArgumentNullException("array");
-            }
-
-            int i = arrayIndex;
-            foreach (var msg in this) {
-                array[i++] = msg;
-            }
-        }
-
         public override IEnumerator<MessageModel> GetEnumerator()
         {
             foreach (var dbId in Index) {
diff --git a/src/Engine/MessageBuffers/MessageBufferBase.cs b/src/Engine/MessageBuffers/MessageBufferBase.cs
index 1667f88..59537ef 100644
--- a/src/Engine/MessageBuffers/MessageBufferBase.cs
+++ b/src/Engine/MessageBuffers/MessageBufferBase.cs
@@ -83,6 +83,18 @@ namespace Smuxi.Engine
             return range;
         }
 
+        public virtual void CopyTo(MessageModel[] array, int arrayIndex)
+        {
+            if (array == null) {
+                throw new ArgumentNullException("array");
+            }
+
+            int i = arrayIndex;
+            foreach (var msg in this) {
+                array[i++] = msg;
+            }
+        }
+
         IEnumerator IEnumerable.GetEnumerator()
         {
             return GetEnumerator();
@@ -111,7 +123,6 @@ namespace Smuxi.Engine
         public abstract void Add(MessageModel item);
         public abstract void Clear();
         public abstract bool Contains(MessageModel item);
-        public abstract void CopyTo(MessageModel[] array, int arrayIndex);
         public abstract bool Remove(MessageModel item);
         public abstract IEnumerator<MessageModel> GetEnumerator();
         public abstract int IndexOf(MessageModel item);
diff --git a/src/Engine/MessageBuffers/SqliteMessageBuffer.cs 
b/src/Engine/MessageBuffers/SqliteMessageBuffer.cs
index 78975bd..97f574d 100644
--- a/src/Engine/MessageBuffers/SqliteMessageBuffer.cs
+++ b/src/Engine/MessageBuffers/SqliteMessageBuffer.cs
@@ -138,11 +138,6 @@ namespace Smuxi.Engine
             throw new NotImplementedException ();
         }
 
-        public override void CopyTo(MessageModel[] array, int arrayIndex)
-        {
-            throw new NotImplementedException ();
-        }
-
         public override bool Remove(MessageModel item)
         {
             throw new NotImplementedException ();