public MainViewModel(IScheduler backgroundScheduler, IFileChooserUi fileChooser)
{
var gpxReplays = loadGpxDataCommand.RegisterAsyncFunction(_ =>
{
using (var stream = fileChooser.ChooseFile().Result)
{
// Stream.Null means the user cancelled the file choosing
// TODO: A better way for ChooseFile to indicate user cancelling
if (stream == Stream.Null)
{
return(Observable.Empty <GpxSection>());
}
var reader = new GpxReader(stream);
return(reader.Points.Replay(backgroundScheduler));
}
});
currentSection = gpxReplays.Switch().ToProperty(this, x => x.CurrentSection);
}
public MainViewModel(IScheduler backgroundScheduler, IFileChooserUi fileChooser)
{
var gpxReplays = loadGpxDataCommand.RegisterAsyncFunction(_ =>
{
using (var stream = fileChooser.ChooseFile().Result)
{
// Stream.Null means the user cancelled the file choosing
// TODO: A better way for ChooseFile to indicate user cancelling
if (stream == Stream.Null)
{
return Observable.Empty<GpxSection>();
}
var reader = new GpxReader(stream);
return reader.Points.Replay(backgroundScheduler);
}
});
currentSection = gpxReplays.Switch().ToProperty(this, x => x.CurrentSection);
}
