use crate::core::window::{Icon, Id, Level, Mode, Settings, UserAttention};
use crate::core::{Point, Size};
use crate::futures::MaybeSend;
use crate::window::Screenshot;
use raw_window_handle::WindowHandle;
use std::fmt;
/// An operation to be performed on some window.
pub enum Action<T> {
/// Spawns a new window with some [`Settings`].
Spawn(Id, Settings),
/// Close the window and exits the application.
Close(Id),
/// Move the window with the left mouse button until the button is
/// released.
///
/// There’s no guarantee that this will work unless the left mouse
/// button was pressed immediately before this function is called.
Drag(Id),
/// Resize the window to the given logical dimensions.
Resize(Id, Size),
/// Fetch the current logical dimensions of the window.
FetchSize(Id, Box<dyn FnOnce(Size) -> T + 'static>),
/// Fetch if the current window is maximized or not.
///
/// ## Platform-specific
/// - **iOS / Android / Web:** Unsupported.
FetchMaximized(Id, Box<dyn FnOnce(bool) -> T + 'static>),
/// Set the window to maximized or back
Maximize(Id, bool),
/// Fetch if the current window is minimized or not.
///
/// ## Platform-specific
/// - **Wayland:** Always `None`.
/// - **iOS / Android / Web:** Unsupported.
FetchMinimized(Id, Box<dyn FnOnce(Option<bool>) -> T + 'static>),
/// Set the window to minimized or back
Minimize(Id, bool),
/// Fetch the current logical coordinates of the window.
FetchPosition(Id, Box<dyn FnOnce(Option<Point>) -> T + 'static>),
/// Move the window to the given logical coordinates.
///
/// Unsupported on Wayland.
Move(Id, Point),
/// Change the [`Mode`] of the window.
ChangeMode(Id, Mode),
/// Fetch the current [`Mode`] of the window.
FetchMode(Id, Box<dyn FnOnce(Mode) -> T + 'static>),
/// Toggle the window to maximized or back
ToggleMaximize(Id),
/// Toggle whether window has decorations.
///
/// ## Platform-specific
/// - **X11:** Not implemented.
/// - **Web:** Unsupported.
ToggleDecorations(Id),
/// Request user attention to the window, this has no effect if the application
/// is already focused. How requesting for user attention manifests is platform dependent,
/// see [`UserAttention`] for details.
///
/// Providing `None` will unset the request for user attention. Unsetting the request for
/// user attention might not be done automatically by the WM when the window receives input.
///
/// ## Platform-specific
///
/// - **iOS / Android / Web:** Unsupported.
/// - **macOS:** `None` has no effect.
/// - **X11:** Requests for user attention must be manually cleared.
/// - **Wayland:** Requires `xdg_activation_v1` protocol, `None` has no effect.
RequestUserAttention(Id, Option<UserAttention>),
/// Bring the window to the front and sets input focus. Has no effect if the window is
/// already in focus, minimized, or not visible.
///
/// This method steals input focus from other applications. Do not use this method unless
/// you are certain that's what the user wants. Focus stealing can cause an extremely disruptive
/// user experience.
///
/// ## Platform-specific
///
/// - **Web / Wayland:** Unsupported.
GainFocus(Id),
/// Change the window [`Level`].
ChangeLevel(Id, Level),
/// Show the system menu at cursor position.
///
/// ## Platform-specific
/// Android / iOS / macOS / Orbital / Web / X11: Unsupported.
ShowSystemMenu(Id),
/// Fetch the raw identifier unique to the window.
FetchId(Id, Box<dyn FnOnce(u64) -> T + 'static>),
/// Change the window [`Icon`].
///
/// On Windows and X11, this is typically the small icon in the top-left
/// corner of the titlebar.
///
/// ## Platform-specific
///
/// - **Web / Wayland / macOS:** Unsupported.
///
/// - **Windows:** Sets `ICON_SMALL`. The base size for a window icon is 16x16, but it's
/// recommended to account for screen scaling and pick a multiple of that, i.e. 32x32.
///
/// - **X11:** Has no universal guidelines for icon sizes, so you're at the whims of the WM. That
/// said, it's usually in the same ballpark as on Windows.
ChangeIcon(Id, Icon),
/// Runs the closure with the native window handle of the window with the given [`Id`].
RunWithHandle(Id, Box<dyn FnOnce(WindowHandle<'_>) -> T + 'static>),
/// Screenshot the viewport of the window.
Screenshot(Id, Box<dyn FnOnce(Screenshot) -> T + 'static>),
}
impl<T> Action<T> {
/// Maps the output of a window [`Action`] using the provided closure.
pub fn map<A>(
self,
f: impl Fn(T) -> A + 'static + MaybeSend + Sync,
) -> Action<A>
where
T: 'static,
{
match self {
Self::Spawn(id, settings) => Action::Spawn(id, settings),
Self::Close(id) => Action::Close(id),
Self::Drag(id) => Action::Drag(id),
Self::Resize(id, size) => Action::Resize(id, size),
Self::FetchSize(id, o) => {
Action::FetchSize(id, Box::new(move |s| f(o(s))))
}
Self::FetchMaximized(id, o) => {
Action::FetchMaximized(id, Box::new(move |s| f(o(s))))
}
Self::Maximize(id, maximized) => Action::Maximize(id, maximized),
Self::FetchMinimized(id, o) => {
Action::FetchMinimized(id, Box::new(move |s| f(o(s))))
}
Self::Minimize(id, minimized) => Action::Minimize(id, minimized),
Self::FetchPosition(id, o) => {
Action::FetchPosition(id, Box::new(move |s| f(o(s))))
}
Self::Move(id, position) => Action::Move(id, position),
Self::ChangeMode(id, mode) => Action::ChangeMode(id, mode),
Self::FetchMode(id, o) => {
Action::FetchMode(id, Box::new(move |s| f(o(s))))
}
Self::ToggleMaximize(id) => Action::ToggleMaximize(id),
Self::ToggleDecorations(id) => Action::ToggleDecorations(id),
Self::RequestUserAttention(id, attention_type) => {
Action::RequestUserAttention(id, attention_type)
}
Self::GainFocus(id) => Action::GainFocus(id),
Self::ChangeLevel(id, level) => Action::ChangeLevel(id, level),
Self::ShowSystemMenu(id) => Action::ShowSystemMenu(id),
Self::FetchId(id, o) => {
Action::FetchId(id, Box::new(move |s| f(o(s))))
}
Self::ChangeIcon(id, icon) => Action::ChangeIcon(id, icon),
Self::RunWithHandle(id, o) => {
Action::RunWithHandle(id, Box::new(move |s| f(o(s))))
}
Self::Screenshot(id, tag) => Action::Screenshot(
id,
Box::new(move |screenshot| f(tag(screenshot))),
),
}
}
}
impl<T> fmt::Debug for Action<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::Spawn(id, settings) => {
write!(f, "Action::Spawn({id:?}, {settings:?})")
}
Self::Close(id) => write!(f, "Action::Close({id:?})"),
Self::Drag(id) => write!(f, "Action::Drag({id:?})"),
Self::Resize(id, size) => {
write!(f, "Action::Resize({id:?}, {size:?})")
}
Self::FetchSize(id, _) => write!(f, "Action::FetchSize({id:?})"),
Self::FetchMaximized(id, _) => {
write!(f, "Action::FetchMaximized({id:?})")
}
Self::Maximize(id, maximized) => {
write!(f, "Action::Maximize({id:?}, {maximized})")
}
Self::FetchMinimized(id, _) => {
write!(f, "Action::FetchMinimized({id:?})")
}
Self::Minimize(id, minimized) => {
write!(f, "Action::Minimize({id:?}, {minimized}")
}
Self::FetchPosition(id, _) => {
write!(f, "Action::FetchPosition({id:?})")
}
Self::Move(id, position) => {
write!(f, "Action::Move({id:?}, {position})")
}
Self::ChangeMode(id, mode) => {
write!(f, "Action::SetMode({id:?}, {mode:?})")
}
Self::FetchMode(id, _) => write!(f, "Action::FetchMode({id:?})"),
Self::ToggleMaximize(id) => {
write!(f, "Action::ToggleMaximize({id:?})")
}
Self::ToggleDecorations(id) => {
write!(f, "Action::ToggleDecorations({id:?})")
}
Self::RequestUserAttention(id, _) => {
write!(f, "Action::RequestUserAttention({id:?})")
}
Self::GainFocus(id) => write!(f, "Action::GainFocus({id:?})"),
Self::ChangeLevel(id, level) => {
write!(f, "Action::ChangeLevel({id:?}, {level:?})")
}
Self::ShowSystemMenu(id) => {
write!(f, "Action::ShowSystemMenu({id:?})")
}
Self::FetchId(id, _) => write!(f, "Action::FetchId({id:?})"),
Self::ChangeIcon(id, _icon) => {
write!(f, "Action::ChangeIcon({id:?})")
}
Self::RunWithHandle(id, _) => {
write!(f, "Action::RunWithHandle({id:?})")
}
Self::Screenshot(id, _) => write!(f, "Action::Screenshot({id:?})"),
}
}
}
