/// <summary>
/// Called when [selected picture header].
/// </summary>
/// <param name="payload">The payload.</param>
/// <returns></returns>
private async Task OnSelectedPictureHeader(object payload)
{
try
{
IsUserInterfaceEnabled = false;
var picHeader = payload as PictureHeaderViewModel;
MessageHub.Publish(MessageNames.StatusAvailable, $"Loading selected {picHeader.Name}, Taken on {picHeader.DateTakenUtc}");
if (picHeader == null)
{
return;
}
// Save the picture before switching it.
if (CurrentPicture != null)
{
await StoreProvider.AddOrUpdatePictureAsync(CurrentPicture);
}
CurrentPicture = await StoreProvider.LoadPictureAsync(picHeader.PictureId);
MessageHub.Publish(MessageNames.StatusAvailable, "Ready");
}
catch (Exception ex)
{
// We send a status message to the hub but it should really be an Error message of its own type
MessageHub.Publish(MessageNames.StatusAvailable, $"Error: {ex.Message}");
}
finally
{
IsUserInterfaceEnabled = true;
}
}