power button implemented (without the power button functionality)

src/widgets/mod.rs

@@ -1,3 +1,4 @@
 pub mod battery;
 pub mod clock;
+pub mod powerbutton;
 pub mod spacer;

src/widgets/powerbutton.rs

@@ -0,0 +1,90 @@
+use crate::widget::{Message, PanelWidget};
+use iced::{
+    Subscription, Task,
+    widget::{button, row, text},
+};
+use iced_layershell::reexport::{Anchor, NewLayerShellSettings};
+
+pub struct ShutdownWidget {
+    window: Option<iced::window::Id>,
+}
+
+#[derive(Debug, Clone)]
+pub enum ShutdownEvents {
+    PowerButtonPressed,
+    ShutdownConfirmed,
+    ShutdownCanceled,
+}
+
+impl ShutdownWidget {
+    pub fn new() -> Self {
+        Self { window: None }
+    }
+}
+
+impl PanelWidget for ShutdownWidget {
+    fn update(&mut self, message: &crate::widget::Message) -> iced::Task<crate::widget::Message> {
+        let Message::ShutdownEvent(event) = message else {
+            return Task::none();
+        };
+
+        match event {
+            ShutdownEvents::PowerButtonPressed => match self.window {
+                Some(child) => {
+                    self.window = None;
+                    Task::done(Message::RemoveWindow(child))
+                }
+                None => {
+                    let id = iced::window::Id::unique();
+                    self.window = Some(id);
+
+                    Task::done(Message::NewLayerShell {
+                        settings: NewLayerShellSettings {
+                            size: Some((220, 40)),
+                            anchor: Anchor::Top,
+                            layer: iced_layershell::reexport::Layer::Overlay,
+                            keyboard_interactivity:
+                                iced_layershell::reexport::KeyboardInteractivity::OnDemand,
+                            exclusive_zone: None,
+                            ..Default::default()
+                        },
+                        id,
+                    })
+                }
+            },
+            ShutdownEvents::ShutdownConfirmed => Task::none(),
+            ShutdownEvents::ShutdownCanceled => match self.window {
+                Some(child) => {
+                    self.window = None;
+                    Task::done(Message::RemoveWindow(child))
+                }
+                None => Task::none(),
+            },
+        }
+    }
+
+    fn subscribe(&self) -> iced::Subscription<crate::widget::Message> {
+        Subscription::none()
+    }
+
+    fn has_window(&self, id: iced::window::Id) -> bool {
+        self.window == Some(id)
+    }
+
+    fn view(&self, id: iced::window::Id) -> iced::Element<'_, crate::widget::Message> {
+        match self.window {
+            Some(child_id) if id == child_id => row![
+                text("Shut down?"),
+                button("✓").on_press(Message::ShutdownEvent(ShutdownEvents::ShutdownConfirmed)),
+                button("✗").on_press(Message::ShutdownEvent(ShutdownEvents::ShutdownCanceled)),
+            ]
+            .spacing(8)
+            .align_y(iced::Alignment::Center)
+            .into(),
+
+            _ => button("⏻")
+                .on_press(Message::ShutdownEvent(ShutdownEvents::PowerButtonPressed))
+                .into(),
+        }
+    }
+}