public override void ViewDidLoad()
{
base.ViewDidLoad();
// relies on override to point its canvas at our OnPaintSample
// see ViewDidLayoutSubviews for triggering EditCredentials
DrawXSettingsManager.InitLocalSettings();
if (DrawXSettingsManager.HasCredentials())
{
// assume we can login and be able to draw
// TODO handle initial failure to login despite saved credentials
SetupDrawer();
}
}
private void EditCredentials()
{
var dialog = new LoginDialog();
dialog.OnCloseLogin = (bool changedServer) =>
{
if (changedServer || _drawer == null)
{
if (DrawXSettingsManager.HasCredentials())
{
SetupDrawer(); // pointless unless contact server
_drawer.LoginToServerAsync();
}
//// TODO allow user to launch locally if server not available
}
_canvas.Invalidate();
};
dialog.Show(FragmentManager, "login");
}
// invoked as callback from pressing a control area in drawing surface, or at startup
private void EditCredentials()
{
var sb = UIStoryboard.FromName("LoginScreen", null);
var loginVC = sb.InstantiateViewController("Login") as LoginViewController;
loginVC.OnCloseLogin = (bool changedServer) =>
{
DismissModalViewController(false);
if (changedServer || _drawer == null)
{
if (DrawXSettingsManager.HasCredentials())
{
SetupDrawer();
_drawer.LoginToServerAsync();
}
//// TODO allow user to launch locally if server not available
}
View.SetNeedsDisplay();
};
PresentViewController(loginVC, false, null);
}
protected override void OnStart()
{
base.OnStart();
if (_drawer == null)
{
if (DrawXSettingsManager.HasCredentials())
{
// assume we can login and be able to draw
// TODO handle initial failure to login despite saved credentials
SetupDrawer();
}
}
if (DrawXSettingsManager.LoggedInUser != null)
{
_drawer.LoginToServerAsync(DrawXSettingsManager.LoggedInUser);
_hasShownCredentials = true; // skip credentials if saved user in store
}
if (!_hasShownCredentials)
{
EditCredentials();
_hasShownCredentials = true;
}
}