public void Initialize <TState>(ReduxStore <TState> store) where TState : class, new()
{
if (store.TimeTravelEnabled)
{
// TODO : Cannot activate History component
}
// Observe UI events
UndoButton.Events().Click
.Subscribe(_ => store.Undo());
RedoButton.Events().Click
.Subscribe(_ => store.Redo());
ResetButton.Events().Click
.Subscribe(_ => store.Reset());
PlayPauseButton.Events().Click
.Subscribe(_ => _internalStore.Dispatch(new TogglePlayPauseAction()));
Slider.Events().ValueChanged
.Where(_ => Slider.FocusState != FocusState.Unfocused)
.Subscribe(e =>
{
int newPosition = (int)e.NewValue;
_internalStore.Dispatch(new MoveToPositionAction {
Position = newPosition
});
});
// Observe changes on internal state
_internalStore.Select(state => state.MaxPosition)
.Subscribe(maxPosition =>
{
Slider.Maximum = maxPosition;
});
Observable.CombineLatest(
_internalStore.Select(state => state.CurrentPosition),
_internalStore.Select(state => state.PlaySessionActive),
_internalStore.Select(state => state.MaxPosition),
store.ObserveCanUndo(),
store.ObserveCanRedo(),
Tuple.Create
)
.ObserveOnDispatcher()
.Subscribe(x =>
{
var(currentPosition, playSessionActive, maxPosition, canUndo, canRedo) = x;
Slider.Value = currentPosition;
if (playSessionActive)
{
UndoButton.IsEnabled = false;
RedoButton.IsEnabled = false;
ResetButton.IsEnabled = false;
PlayPauseButton.IsEnabled = true;
Slider.IsEnabled = false;
PlayPauseButton.Content = "\xE769";
}
else
{
UndoButton.IsEnabled = canUndo;
RedoButton.IsEnabled = canRedo;
ResetButton.IsEnabled = canUndo || canRedo;
PlayPauseButton.IsEnabled = canRedo;
Slider.IsEnabled = maxPosition > 0;
PlayPauseButton.Content = "\xE768";
}
});
_internalStore.ObserveAction <MoveToPositionAction>()
.Subscribe(a =>
{
if (a.Position < _internalStore.State.CurrentPosition)
{
for (int i = 0; i < _internalStore.State.CurrentPosition - a.Position; i++)
{
store.Undo();
}
}
if (a.Position > _internalStore.State.CurrentPosition)
{
for (int i = 0; i < a.Position - _internalStore.State.CurrentPosition; i++)
{
store.Redo();
}
}
});
// Observe changes on listened state
var goForwardNormalActionOrigin = store.ObserveAction()
.Select(action => new { Action = action, BreaksTimeline = true });
var goForwardRedoneActionOrigin = store.ObserveAction(ActionOriginFilter.Redone)
.Select(action => new { Action = action, BreaksTimeline = false });
goForwardNormalActionOrigin.Merge(goForwardRedoneActionOrigin)
.ObserveOnDispatcher()
.Subscribe(x =>
{
_internalStore.Dispatch(new GoForwardAction {
Action = x.Action, BreaksTimeline = x.BreaksTimeline
});
if (_internalStore.State.PlaySessionActive && !store.CanRedo)
{
_internalStore.Dispatch(new TogglePlayPauseAction());
}
});
store.ObserveUndoneAction()
.ObserveOnDispatcher()
.Subscribe(_ => _internalStore.Dispatch(new GoBackAction()));
store.ObserveReset()
.ObserveOnDispatcher()
.Subscribe(_ => _internalStore.Dispatch(new ResetAction()));
_internalStore.Select(state => state.PlaySessionActive)
.Select(playSessionActive =>
playSessionActive ? Observable.Interval(TimeSpan.FromSeconds(1)) : Observable.Empty <long>()
)
.Switch()
.ObserveOnDispatcher()
.Subscribe(_ =>
{
bool canRedo = store.Redo();
if (!canRedo)
{
_internalStore.Dispatch(new TogglePlayPauseAction());
}
});
// Track redux actions
_internalStore.ObserveAction()
.Subscribe(action =>
{
TrackReduxAction(action);
});
}