feat: support app-defined icon sets

crates/core/src/toast.rs

@@ -9,7 +9,7 @@ use gpui::{
     IntoElement, ParentElement as _, RenderOnce, SharedString, StatefulInteractiveElement as _,
     Styled as _, Task, Window, deferred, div, ease_out_quint, px,
 };
-use gpui_native_icons::{IconRole, icon};
+use gpui_native_icons::{Icon, IconRole, icon};
 use gpui_native_theme::ActiveTheme as _;
 
 use crate::button::{Button, ButtonVariant};
@@ -43,7 +43,7 @@ impl ToastAction {
 #[derive(Clone)]
 pub struct Toast {
     message: SharedString,
-    icon: Option<IconRole>,
+    icon: Option<Icon>,
     action: Option<ToastAction>,
     duration: Option<Duration>,
     on_dismiss: Option<DismissHandler>,
@@ -68,8 +68,11 @@ impl Toast {
     }
 
     /// Shows this glyph before the content.
-    pub fn icon(mut self, role: IconRole) -> Self {
-        self.icon = Some(role);
+    pub fn icon<I>(mut self, icon: I) -> Self
+    where
+        I: Into<Icon>,
+    {
+        self.icon = Some(icon.into());
         self
     }
 
@@ -285,14 +288,14 @@ fn pill(entry: &ToastEntry, toasts: &Entity<Toasts>, cx: &App) -> gpui::Stateful
         .border_color(border)
         .rounded(radius)
         .shadow(shadows.clone())
-        .when_some(toast.icon, |pill, icon_role| {
+        .when_some(toast.icon.clone(), |pill, icon| {
             pill.child(
                 div()
                     .flex_none()
                     .mr_2()
                     .flex()
                     .items_center()
-                    .child(icon(icon_role).size(icon_size).color(foreground)),
+                    .child(icon.size(icon_size).color(foreground)),
             )
         })
         .child(