FlexFieldControlLib.FieldControl.TakeFocus C# (CSharp) Method

        public void TakeFocus( Direction direction, Selection selection, Action action )
        {
            Focus();

             switch ( action )
             {
            case Action.Trim:

               if ( TextLength > 0 )
               {
                  int newLength = TextLength - 1;
                  Text = Text.Substring( 0, newLength );
               }

               SelectionStart = TextLength;

               return;

            case Action.Home:

               SelectionStart = 0;
               SelectionLength = 0;

               return;

            case Action.End:

               SelectionStart = TextLength;

               return;
             }

             if ( selection == Selection.All )
             {
            SelectionStart = 0;
            SelectionLength = TextLength;
             }
             else
             {
            if ( direction == Direction.Forward )
            {
               SelectionStart = 0;
            }
            else
            {
               SelectionStart = TextLength;
            }
             }
        }