public override void Redo()
{
if (redoCommand.Count <= 0)
{
return;
}
INavigationCommand command = redoCommand.Pop();
undoCommand.Push(command);
command.Redo();
}
public override void Undo()
{
// kiểm tra danh sách những lần di chuyển trước đó
if (undoCommand.Count <= 0)
{
return;
}
INavigationCommand command = undoCommand.Pop();
redoCommand.Push(command);
command.Undo();
}
public static IEnumerable<INavigationCommand> Then(this IEnumerable<INavigationCommand> commands, INavigationCommand appendCommand)
{
var newCommands = new NavigationCommands();
foreach (var navigationCommand in commands)
{
newCommands.Add(navigationCommand);
}
newCommands.Add(appendCommand);
return commands;
}
protected override void Command(string argument)
{
if (argument.StartsWith("Navigate"))
{
String type = argument.Substring(9);
int split = type.IndexOf(' ');
String args = type.Substring(split);
type = type.Substring(0, split);
if (commandFactoryList.ContainsKey(type))
{
command = commandFactoryList[type](args);
program.logMessages.Enqueue("New nav command received");
}
else
{
program.logMessages.Enqueue("Invalid command for Navigation module: " + type + " | " + args);
}
}
}
public static byte[] Build(this INavigationCommand command)
{
var buffer = new byte[7];
int idx = 0;
buffer[idx++] = 0xff;
buffer[idx++] = command.DestinationAddress;
command.CommandCode.CopyTo(buffer, idx);
idx += command.CommandCode.Length;
command.CommandData.CopyTo(buffer, idx);
idx += command.CommandData.Length;
//
var checksum = (byte)(buffer.Skip(1).Sum(b => b) % 256);
//var checksum = (byte)(buffer.Sum(b => b) % 256);
buffer[idx++] = checksum;
return(buffer);
}
public void Command(INavigationCommand newCommand)
{
this.command = newCommand;
}
public static IEnumerable <INavigationCommand> Then(this IEnumerable <INavigationCommand> commands, INavigationCommand appendCommand)
{
var newCommands = new NavigationCommands();
foreach (var navigationCommand in commands)
{
newCommands.Add(navigationCommand);
}
newCommands.Add(appendCommand);
return(commands);
}
public static IEnumerable <INavigationCommand> Then(this INavigationCommand command, INavigationCommand appendCommand)
{
var commands = command.AsEnumerable();
return(Then(commands, appendCommand));
}
public void AddNavigationCommand(INavigationCommand navigationCommand)
{
_navigationCommands.Add(navigationCommand);
}
public static IEnumerable<INavigationCommand> Then(this INavigationCommand command, INavigationCommand appendCommand)
{
var commands = command.AsEnumerable();
return Then(commands, appendCommand);
}
