fCraft.BuildingCommands.BlockDBUndoConfirmCallback C# (CSharp) Method

        private static void BlockDBUndoConfirmCallback( Player player, object tag, bool fromConsole )
        {
            BlockDBUndoArgs args = ( BlockDBUndoArgs )tag;
            string cmdName = ( args.Area == null ? "UndoArea" : "UndoPlayer" );
            if ( args.Not )
                cmdName += "Not";

            // Produce
            Vector3I[] coords;
            if ( args.Area != null ) {
                coords = new[] { args.Area.MinVertex, args.Area.MaxVertex };
            } else {
                coords = new Vector3I[0];
            }

            // Produce a brief param description for BlockDBDrawOperation
            string description;
            if ( args.CountLimit > 0 ) {
                if ( args.Targets.Length == 0 ) {
                    description = args.CountLimit.ToStringInvariant();
                } else if ( args.Not ) {
                    description = String.Format( "{0} by everyone except {1}",
                                                 args.CountLimit,
                                                 args.Targets.JoinToString( p => p.Name ) );
                } else {
                    description = String.Format( "{0} by {1}",
                                                 args.CountLimit,
                                                 args.Targets.JoinToString( p => p.Name ) );
                }
            } else {
                if ( args.Targets.Length == 0 ) {
                    description = args.AgeLimit.ToMiniString();
                } else if ( args.Not ) {
                    description = String.Format( "{0} by everyone except {1}",
                                                 args.AgeLimit.ToMiniString(),
                                                 args.Targets.JoinToString( p => p.Name ) );
                } else {
                    description = String.Format( "{0} by {1}",
                                                 args.AgeLimit.ToMiniString(),
                                                 args.Targets.JoinToString( p => p.Name ) );
                }
            }

            // start undoing (using DrawOperation infrastructure)
            var op = new BlockDBDrawOperation( player, cmdName, description, coords.Length );
            op.Prepare( coords, args.Entries );

            // log operation
            string targetList;
            if ( args.Targets.Length == 0 ) {
                targetList = "(everyone)";
            } else if ( args.Not ) {
                targetList = "(everyone) except " + args.Targets.JoinToClassyString();
            } else {
                targetList = args.Targets.JoinToClassyString();
            }
            Logger.Log( LogType.UserActivity,
                        "{0}: Player {1} will undo {2} changes (limit of {3}) by {4} on world {5}",
                        cmdName,
                        player.Name,
                        args.Entries.Length,
                        args.CountLimit == 0 ? args.AgeLimit.ToMiniString() : args.CountLimit.ToStringInvariant(),
                        targetList,
                        args.World.Name );

            op.Begin();
        }