1use std::rc::Rc;
 2
 3use crate::platform::PlatformWindow;
 4use crate::{AnyWindowHandle, DisplayId, PlatformDisplay, WindowOptions};
 5
 6pub trait Client {
 7    fn displays(&self) -> Vec<Rc<dyn PlatformDisplay>>;
 8    fn display(&self, id: DisplayId) -> Option<Rc<dyn PlatformDisplay>>;
 9    fn open_window(
10        &self,
11        handle: AnyWindowHandle,
12        options: WindowOptions,
13    ) -> Box<dyn PlatformWindow>;
14}