add toast and alert overlays to the shell

crates/layout/src/shell.rs

@@ -6,8 +6,12 @@ use gpui::{
     AnyElement, App, AppContext as _, Context, ElementId, Entity, InteractiveElement as _,
     IntoElement, ParentElement as _, Pixels, RenderOnce, Styled as _, Window, div, px,
 };
+#[cfg(feature = "alert")]
+use gpui_native_core::alert::{Alert, Alerts, AlertsView};
 use gpui_native_core::button::{Button, ButtonVariant};
 use gpui_native_core::common::{Sizable as _, h_flex, v_flex};
+#[cfg(feature = "toast")]
+use gpui_native_core::toast::{Toast, Toasts, ToastsView};
 use gpui_native_data::sidebar::Sidebar;
 use gpui_native_icons::IconRole;
 use gpui_native_theme::{ActiveTheme as _, Size};
@@ -29,16 +33,24 @@ pub struct LayoutState {
     right_visible: bool,
     left_width: Pixels,
     right_width: Pixels,
+    #[cfg(feature = "toast")]
+    toasts: Entity<Toasts>,
+    #[cfg(feature = "alert")]
+    alerts: Entity<Alerts>,
 }
 
 impl LayoutState {
     /// Creates the state: left sidebar visible, right sidebar hidden.
     pub fn new(cx: &mut App) -> Entity<Self> {
-        cx.new(|_| Self {
+        cx.new(|cx| Self {
             left_visible: true,
             right_visible: false,
             left_width: px(DEFAULT_SIDEBAR_WIDTH),
             right_width: px(DEFAULT_SIDEBAR_WIDTH),
+            #[cfg(feature = "toast")]
+            toasts: cx.new(|_| Toasts::default()),
+            #[cfg(feature = "alert")]
+            alerts: cx.new(|_| Alerts::default()),
         })
     }
 
@@ -91,6 +103,42 @@ impl LayoutState {
             (self.right_width - delta).clamp(px(MIN_SIDEBAR_WIDTH), px(MAX_SIDEBAR_WIDTH));
         cx.notify();
     }
+
+    /// Raises a toast in the shell's overlay. Returns its id.
+    #[cfg(feature = "toast")]
+    pub fn push_toast(&mut self, toast: Toast, cx: &mut Context<Self>) -> usize {
+        self.toasts.update(cx, |toasts, cx| toasts.push(toast, cx))
+    }
+
+    /// Dismisses one toast by id.
+    #[cfg(feature = "toast")]
+    pub fn dismiss_toast(&mut self, id: usize, cx: &mut Context<Self>) {
+        self.toasts.update(cx, |toasts, cx| toasts.dismiss(id, cx));
+    }
+
+    /// Dismisses the toast on screen.
+    #[cfg(feature = "toast")]
+    pub fn clear_toasts(&mut self, cx: &mut Context<Self>) {
+        self.toasts.update(cx, |toasts, cx| toasts.clear(cx));
+    }
+
+    /// Pushes an alert onto the shell's stack. Returns its id.
+    #[cfg(feature = "alert")]
+    pub fn push_alert(&mut self, alert: Alert, cx: &mut Context<Self>) -> usize {
+        self.alerts.update(cx, |alerts, cx| alerts.push(alert, cx))
+    }
+
+    /// Dismisses one alert by id, running its dismiss handler.
+    #[cfg(feature = "alert")]
+    pub fn dismiss_alert(&mut self, id: usize, cx: &mut Context<Self>) {
+        self.alerts.update(cx, |alerts, cx| alerts.dismiss(id, cx));
+    }
+
+    /// Dismisses every alert, running each entry's `on_dismiss` handler.
+    #[cfg(feature = "alert")]
+    pub fn clear_alerts(&mut self, cx: &mut Context<Self>) {
+        self.alerts.update(cx, |alerts, cx| alerts.clear(cx));
+    }
 }
 
 /// Which sidebar a region or toggle belongs to.
@@ -241,8 +289,22 @@ impl RenderOnce for Shell {
                     ))
             });
 
-        // Wraps the layout in a window frame.
-        frame(layout, window, cx)
+        // Wraps the layout in a window frame
+        let mut shell = frame(layout, window, cx);
+
+        #[cfg(feature = "toast")]
+        {
+            let toasts = state.read(cx).toasts.clone();
+            shell = shell.child(ToastsView::new((id.clone(), "toasts"), toasts));
+        }
+
+        #[cfg(feature = "alert")]
+        {
+            let alerts = state.read(cx).alerts.clone();
+            shell = shell.child(AlertsView::new((id, "alerts"), alerts));
+        }
+
+        shell
     }
 }