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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License in the LICENSE-APACHE file or at:
//     https://www.apache.org/licenses/LICENSE-2.0

//! Shell

mod common;
#[cfg(winit)] mod event_loop;
#[cfg(winit)] mod shared;
#[cfg(winit)] mod shell;
#[cfg(winit)] mod window;

#[cfg(winit)] use crate::WindowId;
#[cfg(winit)] use event_loop::Loop as EventLoop;
#[cfg(winit)] use shared::{SharedState, ShellShared};
#[cfg(winit)] use shell::PlatformWrapper;
#[cfg(winit)] use window::Window;

pub(crate) use common::ShellWindow;
pub use common::{Error, Platform, Result};
#[cfg_attr(not(feature = "internal_doc"), doc(hidden))]
pub use common::{GraphicalShell, WindowSurface};
#[cfg(winit)]
pub use shell::{ClosedError, Proxy, Shell, ShellAssoc};
#[cfg_attr(not(feature = "internal_doc"), doc(hidden))]
pub extern crate raw_window_handle;

// TODO(opt): Clippy is probably right that we shouldn't copy a large value
// around (also applies when constructing a shell::Window).
#[allow(clippy::large_enum_variant)]
#[cfg(winit)]
enum PendingAction<A: crate::AppData> {
    AddPopup(WindowId, WindowId, kas::PopupDescriptor),
    AddWindow(WindowId, kas::Window<A>),
    CloseWindow(WindowId),
    Action(kas::Action),
}

#[cfg(winit)]
impl<A: crate::AppData> std::fmt::Debug for PendingAction<A> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            PendingAction::AddPopup(parent_id, id, popup) => f
                .debug_tuple("AddPopup")
                .field(&parent_id)
                .field(&id)
                .field(&popup)
                .finish(),
            PendingAction::AddWindow(id, _) => f.debug_tuple("AddWindow").field(&id).finish(),
            PendingAction::CloseWindow(id) => f.debug_tuple("CloseWindow").field(&id).finish(),
            PendingAction::Action(action) => f.debug_tuple("Action").field(&action).finish(),
        }
    }
}

#[cfg(winit)]
#[derive(Debug)]
enum ProxyAction {
    CloseAll,
    Close(WindowId),
    Message(kas::erased::SendErased),
    WakeAsync,
}