public void revert(EmployeeOriginator employee)
{
if (employeeHistory.Count() > 0)
{
employee.setMemento(employeeHistory.Pop());
}
}
static void Main(string[] args)
{
Caretaker caretaker = new Caretaker();
EmployeeOriginator employee = new EmployeeOriginator();
employee.setName("John Wick");
employee.setAddress("111 Main Street");
employee.setPhone("888-555-1212");
Console.WriteLine("Employee before save: " + employee.getName() + " " + employee.getAddress() + " " + employee.getPhone());
caretaker.save(employee);
employee.setPhone("444-555-6666");
caretaker.save(employee);
Console.WriteLine("Employee after changed phone number save: " + employee.getName() + " " + employee.getAddress() + " " + employee.getPhone());
employee.setPhone("333-999-6666"); // <--- we haven't called save!
caretaker.revert(employee);
Console.WriteLine("Reverts to last save point: " + employee.getName() + " " + employee.getAddress() + " " + employee.getPhone());
//caretaker.revert(employee);
//Console.WriteLine("Reverted to original: " + employee.getName() + " " + employee.getAddress() + " " + employee.getPhone());
//caretaker.revert(employee);
//Console.WriteLine("Reverted to original: " + employee.getName() + " " + employee.getAddress() + " " +employee.getPhone());
Console.Read();
}
public void save(EmployeeOriginator employee)
{
employeeHistory.Push(employee.createMemento());
}
