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1. ÃüÁîµÄ½ÓÊÜÕß
unit uReceiveObject;
interface
type
TLight = class(TObject)
public
procedure Open;
procedure Off;
end;
implementation
{ TLight }
procedure TLight.Off;
begin
Writeln('Light is off.');
end;
procedure TLight.Open;
begin
Writeln('Light is on.');
end;
end.
2.ÃüÁî¶ÔÏó
unit uReceiveObject;
interface
type
TLight = class(TObject)
public
procedure Open;
procedure Off;
end;
implementation
{ TLight }
procedure TLight.Off;
begin
Writeln('Light is off.');
end;
procedure TLight.Open;
begin
Writeln('Light is on.');
end;
end.
3.ÃüÁîµÄÇëÇóÕß
unit uSimpleRemoteWithUndo;
interface
uses
uCommandObject;
type
TSimpleRemoteWithUndo = class(TObject)
private
FOnCommand : TCommand;
FOffCommand : TCommand;
FUndoCommand: TCommand;
public
procedure SetCommand(aOnCommand, aOffCommand: TCommand);
procedure OnButtonWasPressed;
procedure OffButtonWasPressed;
procedure UndoButtonWasPressed;
end;
implementation
{ TSimpleRemoteWithUndo }
procedure TSimpleRemoteWithUndo.OffButtonWasPressed;
begin
FOffCommand.Execute;
FUndoCommand := FOffCommand;
end;
procedure TSimpleRemoteWithUndo.OnButtonWasPressed;
begin
FOnCommand.Execute;
FUndoCommand := FOnCommand;
end;
procedure TSimpleRemoteWithUndo.SetCommand(aOnCommand, aOffCommand: TCommand);
begin
FOnCommand := aOnCommand;
FOffCommand := aOffCommand;
end;
procedure TSimpleRemoteWithUndo.UndoButtonWasPressed;
begin
FUndoCommand.Undo;
end;
end.
4.¿Í»§¶Ë£¬´´½¨¾ßÌåµÄÃüÁî
program pSimpleRemoteWithUndoTest;
{$APPTYPE CONSOLE}
uses
uSimpleRemoteWithUndo in 'uSimpleRemoteWithUndo.pas',
uCommandObject in 'uCommandObject.pas',
uReceiveObje
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1.²ßÂÔÀà
{¡¶HeadFirstÉè¼Æģʽ¡·Ö®²ßÂÔģʽ }
{ ±¾µ¥ÔªÖеÄÀàΪ²ßÂÔÀà }
{ ±àÒ빤¾ß: Delphi7.0 }
{ E-Mail : xshlife@163.com }
unit uStrategy;
interface
type
{·ÉÐнӿڣ¬¼°ÆäʵÏÖÀà }
IFlyBehavior = Interface(IInterface)
procedure Fly;
......