Class default

Streams all initialized screens.

Returns a promise that resolves when the given screen is shown.

Returns a screen, or undefined, if the screen is not initialized.

Returns the "top" screen.

There are two screen layers:

1. The main layer
2. The overlay layer

The overlay layer is always in front of the main layer, therefore if there is no overlay screen visible, this method returns the main layer screen. Otherwise, this method returns the overlay layer screen.

Hides the given screen, or the current screen if none is passed.

If the screen by the given ID is not already initialized, initializes it.

Returns

The initialized screen

Returns if the given screen id is the "top" screen.

There are two screen layers:

1. The main layer
2. The overlay layer

The overlay layer is always in front of the main layer, therefore if there is no overlay screen visible, this method returns if the given screen ID is the main layer screen. Otherwise, this method returns if the given screen ID is the overlay layer screen.

Returns if the given screen id is a currently visible screen (either the main screen or the overlay screen).

Shows a screen