ExtensionInterfaceMain Extension interface definition that will be used by the WindowManager library to get custom OEM-provided information that isn't covered by platform APIs.
ExtensionInterface.ExtensionCallbackCallback that will be registered with the WindowManager library, and that the extension should use to report all state changes.


ExtensionDeviceStateInformation about the current state of the device.
ExtensionDisplayFeatureDescription of a physical feature on the display.
ExtensionProviderA stub implementation for the class that will instantiate the Extension.
ExtensionWindowLayoutInfoContains information about the layout of display features within the window.