builder.In(States.OnFloor)
.On(Events.CloseDoor).Goto(States.DoorClosed)
.On(Events.OpenDoor).Goto(States.DoorOpen)
.On(Events.GoUp).Goto(States.MovingUp)
.On(Events.GoDown).Goto(States.MovingDown)
builder.In(States.MovingUp)
.On(Events.Stop).Goto(States.OnFloor);
builder.In(States.MovingDown)
.On(Events.Stop).Goto(States.OnFloor);
builder.In(States.DoorOpen)
.ExecuteOnEntry(
() => {
Said(“正在开门.”);
});
.On(Events.CloseDoor).Goto(States.DoorClosed)
builder.In(States.DoorClosed)
.ExecuteOnEntry(
() => {
Said(“正在关门.”);
});
.On(Events.OpenDoor).Goto(States.DoorOpen)
3.0版本
我们可以发现，Door状态只与OnFloor发生关系，Moving状态也只与OnFloor发生关系
我们可以将定两个层级关系的状态来描述这些关系。
builder.In(States.OnFloor)
.On(Events.CloseDoor).Goto(States.DoorClosed)
.On(Events.OpenDoor).Goto(States.DoorOpen)
.On(Events.GoUp)
.On(Events.GoDown)
builder.In(States.Moving)
.On(Events.Stop).Goto(States.OnFloor);
builder.In(States.DoorOpen)
.ExecuteOnEntry(
() => {
Said(“正在开门.”);
});
builder.In(States.DoorClosed)
.ExecuteOnEntry(
() => {
Said(“正在关门.”);
});
//定义层级
builder.DefineHierarchyOn(States.Moving)
.WithHistoryType(HistoryType.Shallow)
.WithInitialSubState(States.MovingUp)
.WithSubState(States.MovingDown);
builder.DefineHierarchyOn(States.OnFloor)
.WithHistoryType(HistoryType.None)
.WithInitialSubState(States.DoorClosed)
.WithSubState(States.DoorOpen);
History Types：
None: 状态进入初始子状态。子状态本身进入其初始子状态等，直到到达最内层的嵌套状态。.
Deep: T状态进入其最后一个活动子状态。子状态本身进入其最后的活跃状态等，直到到达最内层的嵌套状态.
Shallow: 状态进入其最后一个活动子状态。子状态本身进入其初始子状态等，直到到达最内层的嵌套状态.
比如：
当我们去MovingUp的状态，是先到Moving状态，再到MovingUp状态。
4.0版本，添加在楼层检查超重
builder.In(States.OnFloor)
.On(Events.CloseDoor).Goto(States.DoorClosed)
.On(Events.OpenDoor).Goto(States.DoorOpen)
.On(Events.GoUp)
.If(CheckOverload).Goto(States.MovingUp)
.Otherwise().Execute(this.AnnounceOverload)
.On(Events.GoDown)
.If(CheckOverload).Goto(States.MovingDown)
.Otherwise().Execute(this.AnnounceOverload);
5.0版本 添加电梯异常状态
builder.DefineHierarchyOn(States.Healthy)
.WithHistoryType(HistoryType.Deep)
.WithInitialSubState(States.OnFloor)
.WithSubState(States.Moving);
builder.DefineHierarchyOn(States.Moving)
.WithHistoryType(HistoryType.Shallow)
.WithInitialSubState(States.MovingUp)
.WithSubState(States.MovingDown);
builder.DefineHierarchyOn(States.OnFloor)
.WithHistoryType(HistoryType.None)
.WithInitialSubState(States.DoorClosed)
.WithSubState(States.DoorOpen);
builder.In(States.Healthy)
.On(Events.Error).Goto(States.Error);
builder.In(States.Error)
.On(Events.Reset).Goto(States.Healthy)
.On(Events.Error);
builder.In(States.OnFloor)
.ExecuteOnEntry(this.AnnounceFloor)
.ExecuteOnExit(Beep)
.ExecuteOnExit(Beep) // just beep a second time
.On(Events.CloseDoor).Goto(States.DoorClosed)
.On(Events.OpenDoor).Goto(States.DoorOpen)
.On(Events.GoUp)
.If(CheckOverload).Goto(States.MovingUp)
.Otherwise().Execute(this.AnnounceOverload)
.On(Events.GoDown)
.If(CheckOverload).Goto(States.MovingDown)
.Otherwise().Execute(this.AnnounceOverload);
builder.In(States.Moving)
.On(Events.Stop).Goto(States.OnFloor);
再也不用变量+IF ELSE了，
添加状态和事件就可以了
逻辑也更清晰
Demo
tiancai4652/StateMachineSapmle: appccelerate/statemachine wpf Sample (github.com)
