sctk: Implement xdg-activation support

runtime/src/command/platform_specific/wayland/activation.rs

@@ -0,0 +1,67 @@
+use iced_core::window::Id;
+use iced_futures::MaybeSend;
+
+use std::fmt;
+
+/// xdg-activation Actions
+pub enum Action<T> {
+    /// request an activation token
+    RequestToken {
+        /// application id
+        app_id: Option<String>,
+        /// window, if provided
+        window: Option<Id>,
+        /// message generation
+        message: Box<dyn FnOnce(Option<String>) -> T + Send + Sync + 'static>,
+    },
+    /// request a window to be activated
+    Activate {
+        /// window to activate
+        window: Id,
+        /// activation token
+        token: String,
+    },
+}
+
+impl<T> Action<T> {
+    /// Maps the output of a window [`Action`] using the provided closure.
+    pub fn map<A>(
+        self,
+        mapper: impl Fn(T) -> A + 'static + MaybeSend + Sync,
+    ) -> Action<A>
+    where
+        T: 'static,
+    {
+        match self {
+            Action::RequestToken {
+                app_id,
+                window,
+                message,
+            } => Action::RequestToken {
+                app_id,
+                window,
+                message: Box::new(move |token| mapper(message(token))),
+            },
+            Action::Activate { window, token } => {
+                Action::Activate { window, token }
+            }
+        }
+    }
+}
+
+impl<T> fmt::Debug for Action<T> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Action::RequestToken { app_id, window, .. } => write!(
+                f,
+                "Action::ActivationAction::RequestToken {{ app_id: {:?}, window: {:?} }}",
+                app_id, window,
+            ),
+            Action::Activate { window, token } => write!(
+                f,
+                "Action::ActivationAction::Activate {{ window: {:?}, token: {:?} }}",
+                window, token,
+            )
+        }
+    }
+}

runtime/src/command/platform_specific/wayland/mod.rs

@@ -2,6 +2,8 @@ use std::fmt::Debug;
 
 use iced_futures::MaybeSend;
 
+/// activation Actions
+pub mod activation;
 /// data device Actions
 pub mod data_device;
 /// layer surface actions
@@ -21,6 +23,8 @@ pub enum Action<T> {
     Popup(popup::Action<T>),
     /// data device
     DataDevice(data_device::Action<T>),
+    /// activation
+    Activation(activation::Action<T>),
 }
 
 impl<T> Action<T> {
@@ -38,6 +42,7 @@ impl<T> Action<T> {
             Action::Window(a) => Action::Window(a.map(f)),
             Action::Popup(a) => Action::Popup(a.map(f)),
             Action::DataDevice(a) => Action::DataDevice(a.map(f)),
+            Action::Activation(a) => Action::Activation(a.map(f)),
         }
     }
 }
@@ -53,6 +58,9 @@ impl<T> Debug for Action<T> {
             Self::DataDevice(arg0) => {
                 f.debug_tuple("DataDevice").field(arg0).finish()
             }
+            Self::Activation(arg0) => {
+                f.debug_tuple("Activation").field(arg0).finish()
+            }
         }
     }
 }

sctk/src/application.rs

@@ -43,8 +43,7 @@ use sctk::{
     seat::{keyboard::Modifiers, pointer::PointerEventKind},
 };
 use std::{
-    collections::HashMap, ffi::c_void, hash::Hash, marker::PhantomData,
-    time::Duration,
+    collections::HashMap, hash::Hash, marker::PhantomData, time::Duration,
 };
 use wayland_backend::client::ObjectId;
 use wayland_protocols::wp::viewporter::client::wp_viewport::WpViewport;
@@ -92,6 +91,8 @@ pub enum Event<Message> {
     Popup(platform_specific::wayland::popup::Action<Message>),
     /// data device requests from the client
     DataDevice(platform_specific::wayland::data_device::Action<Message>),
+    /// xdg-activation request from the client
+    Activation(platform_specific::wayland::activation::Action<Message>),
     /// request sctk to set the cursor of the active pointer
     SetCursor(Interaction),
     /// Application Message
@@ -2063,6 +2064,13 @@ where
             command::Action::PlatformSpecific(platform_specific::Action::Wayland(platform_specific::wayland::Action::DataDevice(data_device_action))) => {
                 proxy.send_event(Event::DataDevice(data_device_action));
             }
+            command::Action::PlatformSpecific(
+                platform_specific::Action::Wayland(
+                    platform_specific::wayland::Action::Activation(activation_action)
+                )
+            ) => {
+                proxy.send_event(Event::Activation(activation_action));
+            }
             _ => {}
         };
     None

sctk/src/commands/activation.rs

@@ -0,0 +1,30 @@
+use iced_runtime::command::Command;
+use iced_runtime::command::{
+    self,
+    platform_specific::{self, wayland},
+};
+use iced_runtime::window::Id as SurfaceId;
+
+pub fn request_token<Message>(
+    app_id: Option<String>,
+    window: Option<SurfaceId>,
+    to_message: impl FnOnce(Option<String>) -> Message + Send + Sync + 'static,
+) -> Command<Message> {
+    Command::single(command::Action::PlatformSpecific(
+        platform_specific::Action::Wayland(wayland::Action::Activation(
+            wayland::activation::Action::RequestToken {
+                app_id,
+                window,
+                message: Box::new(to_message),
+            },
+        )),
+    ))
+}
+
+pub fn activate<Message>(window: SurfaceId, token: String) -> Command<Message> {
+    Command::single(command::Action::PlatformSpecific(
+        platform_specific::Action::Wayland(wayland::Action::Activation(
+            wayland::activation::Action::Activate { window, token },
+        )),
+    ))
+}

sctk/src/commands/mod.rs

@@ -1,5 +1,6 @@
 //! Interact with the wayland objects of your application.
 
+pub mod activation;
 pub mod data_device;
 pub mod layer_surface;
 pub mod popup;

sctk/src/event_loop/mod.rs

@@ -11,6 +11,7 @@ use crate::{
     conversion,
     dpi::LogicalSize,
     handlers::{
+        activation::IcedRequestData,
         wp_fractional_scaling::FractionalScalingManager,
         wp_viewporter::ViewporterState,
     },
@@ -30,6 +31,7 @@ use iced_runtime::command::platform_specific::{
     },
 };
 use sctk::{
+    activation::{ActivationState, RequestData},
     compositor::CompositorState,
     data_device_manager::DataDeviceManagerState,
     output::OutputState,
@@ -179,6 +181,7 @@ where
                     &globals, &qh,
                 )
                 .expect("data device manager is not available"),
+                activation_state: ActivationState::bind(&globals, &qh).ok(),
 
                 queue_handle: qh,
                 loop_handle,
@@ -1297,7 +1300,54 @@ where
                                 }
                             }
                         }
-                    }
+                    },
+                    Event::Activation(activation_event) => match activation_event {
+                        platform_specific::wayland::activation::Action::RequestToken { app_id, window, message } => {
+                            if let Some(activation_state) = self.state.activation_state.as_ref() {
+                                let (seat_and_serial, surface) = if let Some(id) = window {
+                                    let window = self.state.windows.iter().find(|w| w.id == id);
+                                    let surface = window.as_ref().map(|w| w.window.wl_surface().clone());
+                                    let seat_and_serial = surface.as_ref().and_then(|surface| {
+                                        self.state.seats.first().and_then(|seat| if seat.kbd_focus.as_ref().map(|focus| focus == surface).unwrap_or(false) {
+                                            seat.last_kbd_press.as_ref().map(|(_, serial)| (seat.seat.clone(), *serial))
+                                        } else if seat.ptr_focus.as_ref().map(|focus| focus == surface).unwrap_or(false) {
+                                            seat.last_ptr_press.as_ref().map(|(_, _, serial)| (seat.seat.clone(), *serial))
+                                        } else {
+                                            None
+                                        })
+                                    });
+
+                                    (seat_and_serial, surface)
+                                } else {
+                                    (None, None)
+                                };
+
+                                activation_state.request_token_with_data(&self.state.queue_handle, IcedRequestData::new(
+                                    RequestData {
+                                        app_id,
+                                        seat_and_serial,
+                                        surface,
+                                    },
+                                    message,
+                                ));
+                            } else {
+                                // if we don't have the global, we don't want to stall the app
+                                sticky_exit_callback(
+                                    IcedSctkEvent::UserEvent(message(None)),
+                                    &self.state,
+                                    &mut control_flow,
+                                    &mut callback,
+                                )
+                            }
+                        },
+                        platform_specific::wayland::activation::Action::Activate { window, token } => {
+                            if let Some(activation_state) = self.state.activation_state.as_ref() {
+                                if let Some(surface) = self.state.windows.iter().find(|w| w.id == window).map(|w| w.window.wl_surface()) {
+                                    activation_state.activate::<SctkState<T>>(surface, token)
+                                }
+                            }
+                        },
+                    },
                 }
             }
 

sctk/src/event_loop/state.rs

@@ -30,6 +30,7 @@ use iced_runtime::{
     window,
 };
 use sctk::{
+    activation::ActivationState,
     compositor::CompositorState,
     data_device_manager::{
         data_device::DataDevice,
@@ -329,6 +330,7 @@ pub struct SctkState<T> {
     pub(crate) xdg_shell_state: XdgShell,
     pub(crate) layer_shell: Option<LayerShell>,
     pub(crate) data_device_manager_state: DataDeviceManagerState,
+    pub(crate) activation_state: Option<ActivationState>,
     pub(crate) token_ctr: u32,
 }
 

sctk/src/handlers/activation.rs

@@ -0,0 +1,60 @@
+use std::sync::Mutex;
+
+use sctk::{
+    activation::{ActivationHandler, RequestData, RequestDataExt},
+    delegate_activation,
+    reexports::client::protocol::{wl_seat::WlSeat, wl_surface::WlSurface},
+};
+
+use crate::event_loop::state::SctkState;
+
+pub struct IcedRequestData<T> {
+    data: RequestData,
+    message: Mutex<
+        Option<Box<dyn FnOnce(Option<String>) -> T + Send + Sync + 'static>>,
+    >,
+}
+
+impl<T> IcedRequestData<T> {
+    pub fn new(
+        data: RequestData,
+        message: Box<dyn FnOnce(Option<String>) -> T + Send + Sync + 'static>,
+    ) -> IcedRequestData<T> {
+        IcedRequestData {
+            data,
+            message: Mutex::new(Some(message)),
+        }
+    }
+}
+
+impl<T> RequestDataExt for IcedRequestData<T> {
+    fn app_id(&self) -> Option<&str> {
+        self.data.app_id()
+    }
+
+    fn seat_and_serial(&self) -> Option<(&WlSeat, u32)> {
+        self.data.seat_and_serial()
+    }
+
+    fn surface(&self) -> Option<&WlSurface> {
+        self.data.surface()
+    }
+}
+
+impl<T> ActivationHandler for SctkState<T> {
+    type RequestData = IcedRequestData<T>;
+
+    fn new_token(&mut self, token: String, data: &Self::RequestData) {
+        if let Some(message) = data.message.lock().unwrap().take() {
+            self.pending_user_events.push(
+                crate::application::Event::SctkEvent(
+                    crate::sctk_event::IcedSctkEvent::UserEvent(message(Some(
+                        token,
+                    ))),
+                ),
+            );
+        } // else the compositor send two tokens???
+    }
+}
+
+delegate_activation!(@<T> SctkState<T>, IcedRequestData<T>);

sctk/src/handlers/mod.rs

@@ -1,4 +1,5 @@
 // handlers
+pub mod activation;
 pub mod compositor;
 pub mod data_device;
 pub mod output;