protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
DrawXSettingsManager.InitLocalSettings();
}
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();
}
}
} // caller should set so can use to dismiss
public override Dialog OnCreateDialog(Bundle savedInstanceState)
{
OnCreate(savedInstanceState);
// equivalent of an Activity's SetContentView
var builder = new AlertDialog.Builder(Activity);
var inflator = Activity.LayoutInflater;
var dialogView = inflator.Inflate(Resource.Layout.LoginLayout, null);
if (dialogView == null)
{
return(null);
}
var serverAddress = dialogView.FindViewById <EditText>(Resource.Id.serverIPEntry);
var username = dialogView.FindViewById <EditText>(Resource.Id.usernameEntry);
var password = dialogView.FindViewById <EditText>(Resource.Id.passwordEntry);
var s = DrawXSettingsManager.Settings;
serverAddress.Text = s.ServerIP;
username.Text = s.Username;
password.Text = s.Password;
builder.SetView(dialogView);
builder.SetPositiveButton("Login", (sender, e) =>
{
bool changedServer = DrawXSettingsManager.UpdateCredentials(serverAddress.Text, username.Text, password.Text);
((AlertDialog)sender).Dismiss();
OnCloseLogin(changedServer);
});
builder.SetNegativeButton("Cancel", (sender, e) =>
{
((AlertDialog)sender).Dismiss();
});
var dialog = builder.Create();
// you can only cancel logging in if already logged in, otherwise it is meaningless
if (DrawXSettingsManager.LoggedInUser == null)
{
dialog.Show(); // instantiates so buttons can be accessed
var negativeButton = dialog.GetButton((int)DialogButtonType.Negative);
negativeButton.Enabled = false;
}
return(dialog);
}
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;
}
}
private void DoLogin()
{
bool changedServer = DrawXSettingsManager.UpdateCredentials(ServerEntry.Text, UsernameEntry.Text, PasswordEntry.Text);
OnCloseLogin(changedServer);
}
