int main()
{
//invoker
Invoker invoker;
//command receiver--->the real object to execute command
Light *light = new Light();
TV *tv = new TV();
//command
LightCommand *lightCom = new LightCommand();
TVCommand *tvCom = new TVCommand();
lightCom->setReceiver(light);
tvCom->setReceiver(tv);
invoker.addCommand(lightCom);
invoker.addCommand(tvCom);
invoker.execute();
invoker.undo();
return 0;
}
int main(int argc, char *argv[])
{
Data data(10);
AddCommand add(&data);
SubCommand sub(&data);
Invoker invoker;
cout << "value = " << data.getValue() << endl;
invoker.invoke(&add);
cout << "value = " << data.getValue() << endl;
invoker.invoke(&sub);
cout << "value = " << data.getValue() << endl;
invoker.undo();
cout << "value = " << data.getValue() << endl;
invoker.undo();
invoker.undo();
invoker.undo();
cout << "value = " << data.getValue() << endl;
return 0;
}
void main()
{
IReceiver* reciever = new IReceiver(2);
IncrementCommand* increCmd = new IncrementCommand(reciever);
DecrementCommand* decreCmd = new DecrementCommand(reciever);
SquareCommand* squreCmd = new SquareCommand(reciever);
SqrtCommand* sqrtCmd = new SqrtCommand(reciever);
Invoker* invoker = new Invoker();
invoker->addCmd(increCmd);
invoker->addCmd(decreCmd);
invoker->addCmd(squreCmd);
invoker->addCmd(sqrtCmd);
invoker->notify();
invoker->undo();
delete increCmd;
delete decreCmd;
delete squreCmd;
delete sqrtCmd;
delete invoker;
delete reciever;
}
