private void UpdateCollection()
{
// (Konrad) We pass a list of items already selected so that we can update them rather than create a new list.
var selected = View._listBox.SelectedItems;
var scheduler = DynamoViewmodel.Model.Scheduler;
var delegateBasedAsyncTask = new DelegateBasedAsyncTask(scheduler, delegate
{
ViewModel.PopulateItems(selected);
});
delegateBasedAsyncTask.ThenSend(delegate { }, SyncContext);
scheduler.ScheduleForExecution(delegateBasedAsyncTask);
}
private void OnRequestScheduledTask(Action action)
{
var s = dynamoViewModel.Model.Scheduler;
var t = new DelegateBasedAsyncTask(s, () =>
{
});
t.ThenSend((_) =>
{
action();
}, syncContext);
s.ScheduleForExecution(t);
}
private void UpdateParameterSelector()
{
var scheduler = _dynamoViewmodel.Model.Scheduler;
var delegateBasedAsyncTask = new DelegateBasedAsyncTask(scheduler, delegate
{
_viewModel.PopulateItems();
});
delegateBasedAsyncTask.ThenSend(delegate
{
_viewModel.SelectedItem = _viewModel.SelectedItem ?? _viewModel.ItemsCollection.FirstOrDefault();
}, _syncContext);
scheduler.ScheduleForExecution(delegateBasedAsyncTask);
}
private void UpdateColorRange()
{
var s = dynamoViewModel.Model.Scheduler;
// prevent data race by running on scheduler
var t = new DelegateBasedAsyncTask(s, () =>
{
colorRange = colorRangeNode.ComputeColorRange(dynamoModel.EngineController);
});
// then update on the ui thread
t.ThenSend((_) =>
{
var bmp = CreateColorRangeBitmap(colorRange);
gradientImage.Source = bmp;
}, syncContext);
s.ScheduleForExecution(t);
}
protected DelegateBasedAsyncTask AsyncThenUI(DelegateBasedAsyncTask task, Action action)
{
task.ThenSend((_) => action?.BeginInvoke(action.EndInvoke, null), syncContext);
return(task);
}