feat: support app-defined icon sets

crates/core/src/dropdown_menu.rs

@@ -9,7 +9,7 @@ use gpui::{
     MouseButton, MouseDownEvent, ParentElement as _, RenderOnce, Role, SharedString,
     StatefulInteractiveElement as _, Styled as _, Window, canvas, div, relative,
 };
-use gpui_native_icons::{IconRole, icon};
+use gpui_native_icons::{Icon, IconRole, icon};
 use gpui_native_theme::{ActiveTheme as _, BORDER_WIDTH, Size};
 use gpui_native_utils::{focus_handle, focus_ring};
 
@@ -27,7 +27,7 @@ type ItemsFn = Box<dyn Fn(&mut Window, &mut App) -> Vec<MenuItem>>;
 pub struct DropdownMenu {
     id: ElementId,
     label: Option<SharedString>,
-    icon: Option<IconRole>,
+    icon: Option<Icon>,
     variant: ButtonVariant,
     size: Size,
     disabled: bool,
@@ -73,8 +73,11 @@ impl DropdownMenu {
     }
 
     /// Shows an icon beside the label.
-    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
     }
 
@@ -267,8 +270,8 @@ impl RenderOnce for DropdownMenu {
                 )
             })
             .when(!self.loading, |zone| {
-                zone.when_some(self.icon, |zone, role| {
-                    zone.child(icon(role).size(metrics.icon_size).color(foreground))
+                zone.when_some(self.icon, |zone, icon| {
+                    zone.child(icon.size(metrics.icon_size).color(foreground))
                 })
             })
             .when_some(self.label, |zone, label| zone.child(label));