void RunStackAction(StackAction action, List <T> stack, Action onComplete)
{
if (stack.Count == 0)
{
ListPool <T> .Release(stack);
onComplete.Invoke();
return;
}
var applicationState = stack.Last();
stack.RemoveAt(stack.Count - 1);
var changeEvent = StackChangeEvent <T> .GetPooled(action, applicationState);
var changeStateRequest = new ProgressListenerRequest();
changeStateRequest.OnProgressChange += () => InvokeProgressChange(changeStateRequest.Progress, changeEvent);
changeStateRequest.OnComplete += () =>
{
RunStackAction(action, stack, onComplete);
StackChangeEvent <T> .Release(changeEvent);
};
GetStateFromEnum(applicationState).ChangeState(changeEvent, changeStateRequest);
}
public void Push(T applicationState, [NotNull] Action onComplete)
{
Assert.IsFalse(IsBusy);
Assert.IsNotNull(onComplete);
if (m_StatesStack.Count > 0 && m_StatesStack[0].Equals(applicationState))
{
onComplete.Invoke();
return;
}
IsBusy = true;
var oldStackState = ListPool <T> .Get();
oldStackState.AddRange(m_StatesStack);
var newStackState = ListPool <T> .Get();
newStackState.AddRange(m_StatesStack);
newStackState.Add(applicationState);
var pausedSate = m_StatesStack.Last();
var stateWillChangeEvent = StackOperationEvent <T> .GetPooled(StackOperation.Push, applicationState, oldStackState, newStackState);
Preprocess(stateWillChangeEvent, () =>
{
InvokeStateWillChange(stateWillChangeEvent);
var pauseEvent = StackChangeEvent <T> .GetPooled(StackAction.Paused, pausedSate);
var addEvent = StackChangeEvent <T> .GetPooled(StackAction.Added, applicationState);
var changeStateRequest = new ProgressListenerRequest();
changeStateRequest.OnProgressChange += () => InvokeProgressChange(changeStateRequest.Progress, pauseEvent);
changeStateRequest.OnComplete += () =>
{
changeStateRequest = new ProgressListenerRequest();
changeStateRequest.OnProgressChange += () => InvokeProgressChange(changeStateRequest.Progress, addEvent);
changeStateRequest.OnComplete += () =>
{
var stackSeComplete = StackOperationEvent <T> .GetPooled(StackOperation.Push, applicationState, oldStackState, newStackState);
Postprocess(stackSeComplete, () =>
{
IsBusy = false;
m_StatesStack.Add(applicationState);
InvokeStateChanged(stackSeComplete);
ListPool <T> .Release(oldStackState);
ListPool <T> .Release(newStackState);
StackChangeEvent <T> .Release(addEvent);
StackChangeEvent <T> .Release(pauseEvent);
onComplete.Invoke();
});
};
GetStateFromEnum(applicationState).ChangeState(addEvent, changeStateRequest);
};
GetStateFromEnum(pausedSate).ChangeState(pauseEvent, changeStateRequest);
});
}
public void Set(T applicationState, [NotNull] Action onComplete)
{
Assert.IsFalse(IsBusy);
Assert.IsNotNull(onComplete);
if (m_StatesStack.Count == 1 && m_StatesStack[0].Equals(applicationState))
{
onComplete.Invoke();
return;
}
IsBusy = true;
var oldStackState = ListPool <T> .Get();
oldStackState.AddRange(m_StatesStack);
var newStackState = ListPool <T> .Get();
newStackState.Add(applicationState);
var stackSetOperationEvent = StackOperationEvent <T> .GetPooled(StackOperation.Set, applicationState, oldStackState, newStackState);
Preprocess(stackSetOperationEvent, () =>
{
InvokeStateWillChange(stackSetOperationEvent);
RunStackAction(StackAction.Removed, oldStackState, () =>
{
//oldStackState will be released so we need to make new one
oldStackState = ListPool <T> .Get();
oldStackState.AddRange(m_StatesStack);
var addEvent = StackChangeEvent <T> .GetPooled(StackAction.Added, applicationState);
var changeStateRequest = new ProgressListenerRequest();
changeStateRequest.OnProgressChange += () => InvokeProgressChange(changeStateRequest.Progress, addEvent);
changeStateRequest.OnComplete += () =>
{
var stackSeComplete = StackOperationEvent <T> .GetPooled(StackOperation.Set, applicationState, oldStackState, newStackState);
Postprocess(stackSeComplete, () =>
{
IsBusy = false;
m_StatesStack.Clear();
m_StatesStack.Add(applicationState);
InvokeStateChanged(stackSeComplete);
ListPool <T> .Release(oldStackState);
ListPool <T> .Release(newStackState);
StackChangeEvent <T> .Release(addEvent);
onComplete.Invoke();
});
};
GetStateFromEnum(applicationState).ChangeState(addEvent, changeStateRequest);
});
});
}
public void Pop([NotNull] Action onComplete)
{
Assert.IsFalse(IsBusy);
Assert.IsNotNull(onComplete);
if (m_StatesStack.Count == 0)
{
throw new Exception("States are empty");
}
IsBusy = true;
var oldStackState = ListPool <T> .Get();
oldStackState.AddRange(m_StatesStack);
var removedSate = m_StatesStack.Last();
var newStackState = ListPool <T> .Get();
newStackState.AddRange(m_StatesStack);
newStackState.Remove(removedSate);
var resumedSate = newStackState.Last();
var stateWillChangeEvent = StackOperationEvent <T> .GetPooled(StackOperation.Pop, removedSate, oldStackState, newStackState);
Preprocess(stateWillChangeEvent, () =>
{
InvokeStateWillChange(stateWillChangeEvent);
var removedEvent = StackChangeEvent <T> .GetPooled(StackAction.Removed, removedSate);
var resumedEvent = StackChangeEvent <T> .GetPooled(StackAction.Resumed, resumedSate);
var changeStateRequest = new ProgressListenerRequest();
changeStateRequest.OnProgressChange += () => InvokeProgressChange(changeStateRequest.Progress, removedEvent);
changeStateRequest.OnComplete += () =>
{
changeStateRequest = new ProgressListenerRequest();
changeStateRequest.OnProgressChange += () => InvokeProgressChange(changeStateRequest.Progress, resumedEvent);
changeStateRequest.OnComplete += () =>
{
var stackPopComplete = StackOperationEvent <T> .GetPooled(StackOperation.Pop, removedSate, oldStackState, newStackState);
Postprocess(stackPopComplete, () =>
{
IsBusy = false;
m_StatesStack.Remove(removedSate);
InvokeStateChanged(stackPopComplete);
ListPool <T> .Release(oldStackState);
ListPool <T> .Release(newStackState);
StackChangeEvent <T> .Release(removedEvent);
StackChangeEvent <T> .Release(resumedEvent);
onComplete.Invoke();
});
};
GetStateFromEnum(resumedSate).ChangeState(resumedEvent, changeStateRequest);
};
GetStateFromEnum(removedSate).ChangeState(removedEvent, changeStateRequest);
});
}