Creates an instance of SplashScreenHandler, and generates the splash screen.
OptionalimagePathWhite: stringPath of the image to show for dark theme.
OptionalimagePathBlack: stringPath of the image to show for light theme.
OptionalsplashContainerId: string = 'splash'Document's target div id, where to put the splash screen.
Disposes the splash screen
Shows notification message in splash screen. Useful for showing progress.
Message to show.
Handler class to manipulate the splash screen.