public IdSelectionViewModel(IMarkerRegistrationService registrationService)
{
_registrationService = registrationService;
var selectableIds = _registrationService.AvailableIds
.Select(id => new SelectableIdViewModel(id));
SelectableIds = new ObservableCollection <SelectableIdViewModel>(selectableIds);
SelectedId = SelectableIds.Select(
selectable => selectable.SelectedCommand.Select(_ => selectable.Id)
)
.Merge();
}
public MarkerRegistrationViewModel(
IMarkerRegistrationService registrationService,
IMarkerRegistrationField registrationField,
ScaleAdapter scaleAdapter
)
{
IdSelectionPanel = new IdSelectionViewModel(registrationService);
FieldPosition = Observable.Return(registrationField.FieldPosition)
.ScaleToScreen(scaleAdapter)
.ToReactiveProperty();
FieldSize = Observable.Return(registrationField.FieldSize)
.ScaleToScreen(scaleAdapter)
.ToReactiveProperty();
IsCandidatePlaced = Observable.FromEvent <MarkerCandidateState>(
h => registrationService.OnMarkerCandidateUpdated += h,
h => registrationService.OnMarkerCandidateUpdated -= h
)
.Do(value => Debug.WriteLine($"-> Candidate update = {value}"))
.Select(state => state == MarkerCandidateState.Detected)
.ToReactiveProperty();
IsSelectingId = IsCandidatePlaced
.SelectMany(async isSelecting =>
{
if (isSelecting)
{
await IdSelectionPanel.UpdateRegisteredIdsAsync();
return(IsCandidatePlaced.Value);
}
return(false);
})
.ToReactiveProperty();
_disposable = IdSelectionPanel.SelectedId
.Subscribe(id =>
{
registrationService.RegisterCandidate(id);
IsSelectingId.Value = false;
IsCandidatePlaced.ForceNotify();
});
}