// 将备忘录中的数据备份导入到联系人列表中
public void RestoreMemento(ContactMemento memento)
{
if (memento != null)
{
this.ContactPersons = memento.ContactPersonBack;
}
}
public void RestoreMemento(ContactMemento memento)
{
// 下面这种方式是错误的，因为这样传递的是引用
// 则删除一次可以恢复，但恢复之后再删除的话就恢复不了.
// 所以应该传递contactPersonBack的深拷贝，深拷贝可以使用序列化来完成
this.ContactPersons = memento.contactPersonBack;
}
public void RestoreMemento(ContactMemento memento)
{
//this.ContactPersons = memento.contactPersonBack;
var contactPersons = Serializer.Deserialize <List <ContactPerson> >(Serializer.Serialize(memento.contactPersonBack));
this.ContactPersons = contactPersons;
}
public void MementoTesting()
{
List <ContactPerson> persons = new List <ContactPerson>()
{
new ContactPerson()
{
Name = "Learning Hard", MobileNum = "123445"
},
new ContactPerson()
{
Name = "Tony", MobileNum = "234565"
},
new ContactPerson()
{
Name = "Jock", MobileNum = "231455"
}
};
MobileOwner mobileOwner = new MobileOwner(persons);
mobileOwner.Show();
// 创建备忘录并保存备忘录对象
Caretaker caretaker = new Caretaker();
caretaker.ContactMementoDic.Add(DateTime.Now.ToString(), mobileOwner.CreateMemento());
// 更改发起人联系人列表
Console.WriteLine("----移除最后一个联系人--------");
mobileOwner.ContactPersons.RemoveAt(2);
mobileOwner.Show();
// 创建第二个备份
//Thread.Sleep(1000);
caretaker.ContactMementoDic.Add(DateTime.Now.ToString(), mobileOwner.CreateMemento());
// 恢复到原始状态
Console.WriteLine("-------恢复联系人列表,请从以下列表选择恢复的日期------");
var keyCollection = caretaker.ContactMementoDic.Keys;
foreach (string k in keyCollection)
{
Console.WriteLine("Key = {0}", k);
}
int index = 0;
while (index < 2)
{
Console.Write("请输入数字,按窗口的关闭键退出:");
try
{
index++;
//index = Int32.Parse(Console.ReadLine());
}
catch
{
Console.WriteLine("输入的格式错误");
continue;
}
ContactMemento contactMentor = null;
if (index < keyCollection.Count && caretaker.ContactMementoDic.TryGetValue(keyCollection.ElementAt(index), out contactMentor))
{
mobileOwner.RestoreMemento(contactMentor);
mobileOwner.Show();
}
else
{
Console.WriteLine("输入的索引大于集合长度！");
}
}
}
static void Main(string[] args)
{
////Struture for memento pattern
//Originator origiator = new Originator();
//origiator.State = "ON";
//CareTaker careTaker = new CareTaker();
//careTaker.Memento = origiator.CreateMemento();
//origiator.State = "OFF";
//origiator.SetMemento(careTaker.Memento);
List <ContactPerson> contactPersons = new List <ContactPerson>()
{
new ContactPerson()
{
Name = "Learning Hard", MobileNum = "123445"
},
new ContactPerson()
{
Name = "Tony", MobileNum = "234565"
},
new ContactPerson()
{
Name = "Jock", MobileNum = "231455"
}
};
MobileOwner owner = new MobileOwner(contactPersons);
owner.ShowContacts();
CareTaker careTaker = new CareTaker();
careTaker.ContactMementos.Add(DateTime.Now.ToString(), owner.CreateMemento());
//Remove some contacts;
owner.ContactPersons.RemoveAt(2);
owner.ShowContacts();
Thread.Sleep(1000);
careTaker.ContactMementos.Add(DateTime.Now.ToString(), owner.CreateMemento());
Console.WriteLine("Restore Date Index:");
var keyCollections = careTaker.ContactMementos.Keys;
foreach (var key in keyCollections)
{
Console.WriteLine(key);
}
while (true)
{
int index = -1;
try
{
index = Int32.Parse(Console.ReadLine());
}
catch
{
Console.WriteLine("The format is wrong");
continue;
}
ContactMemento contactMentor = null;
if (index < keyCollections.Count && careTaker.ContactMementos.TryGetValue(keyCollections.ElementAt(index), out contactMentor))
{
owner.RestoreMemento(contactMentor);
owner.ShowContacts();
}
else
{
Console.WriteLine("");
}
}
Console.Read();
}
/// <summary>
/// 恢复备份
/// </summary>
/// <param name="memento"></param>
public void RestoreMemento(ContactMemento memento)
{
this._contactPersons = memento.GetMemento();
}
static void Main(string[] args)
{
List <ContactPerson> persons = new List <ContactPerson>()
{
new ContactPerson()
{
Name = "Learning Hard", MobileNum = "123445"
},
new ContactPerson()
{
Name = "Tony", MobileNum = "234565"
},
new ContactPerson()
{
Name = "Jock", MobileNum = "231455"
}
};
MobileOwner mobileOwner = new MobileOwner(persons);
mobileOwner.Show();
// 创建备忘录并保存备忘录对象
Caretaker caretaker = new Caretaker();
caretaker.ContactPersonDictionary.Add(DateTime.Now.ToString(), mobileOwner.CreateContactMemento());
// 更改发起人联系人列表
Console.WriteLine("----移除最后一个联系人--------");
mobileOwner.ContactPersons.RemoveAt(2);
mobileOwner.Show();
Thread.Sleep(1000);
caretaker.ContactPersonDictionary.Add(DateTime.Now.ToString(), mobileOwner.CreateContactMemento());
int count = caretaker.ContactPersonDictionary.Count;
for (int i = 0; i < count; i++)
{
Console.WriteLine("{0} {1}", i + 1, caretaker.ContactPersonDictionary.Keys.ElementAt(i));
}
while (true)
{
Console.Write("请输入数字,按窗口的关闭键退出:");
int index = -1;
try
{
index = Int32.Parse(Console.ReadLine());
}
catch
{
Console.WriteLine("输入的格式错误");
continue;
}
ContactMemento contactMentor = null;
if (index < count)
{
contactMentor = caretaker.ContactPersonDictionary.Values.ElementAt(index);
mobileOwner.RestoreMemento(contactMentor);
mobileOwner.Show();
}
else
{
Console.WriteLine("输入的索引大于集合长度！");
}
}
Console.Read();
}
/// <summary>
/// 从备忘录回复联系人
/// </summary>
/// <param name="memento"></param>
public void RestoreMemento(ContactMemento memento)
{
Contacts = memento.ContactListBack;
}