feat(options/appearance): display icon for custom themes

apps/client/src/widgets/type_widgets/options/appearance.tsx

@@ -16,7 +16,7 @@ import FormCheckbox from "../../react/FormCheckbox";
 import FormGroup from "../../react/FormGroup";
 import FormList, { FormListHeader, FormListItem } from "../../react/FormList";
 import { FormTextBoxWithUnit } from "../../react/FormTextBox";
-import { useTriliumOption, useTriliumOptionBool } from "../../react/hooks";
+import { useNote, useNoteIcon, useTriliumOption, useTriliumOptionBool } from "../../react/hooks";
 import Icon from "../../react/Icon";
 import Modal from "../../react/Modal";
 import Slider from "../../react/Slider";
@@ -47,6 +47,51 @@ const LEGACY_THEMES: Theme[] = [
     { val: "dark", title: t("theme.dark_theme"), icon: "bx bx-moon" }
 ];
 
+interface CustomThemeItemProps {
+    theme: Theme;
+    selected: boolean;
+    onClick: () => void;
+}
+
+function CustomThemeItem({ theme, selected, onClick }: CustomThemeItemProps) {
+    const note = useNote(theme.noteId);
+    const noteIcon = useNoteIcon(note);
+    const icon = noteIcon ?? "bx bx-palette";
+
+    return (
+        <FormListItem
+            key={theme.val}
+            icon={icon}
+            selected={selected}
+            onClick={onClick}
+        >
+            {theme.title}
+        </FormListItem>
+    );
+}
+
+interface CurrentThemeDisplayProps {
+    theme: Theme | undefined;
+    fallbackLabel: string;
+}
+
+function CurrentThemeDisplay({ theme, fallbackLabel }: CurrentThemeDisplayProps) {
+    const note = useNote(theme?.noteId);
+    const noteIcon = useNoteIcon(note);
+
+    // For built-in themes, use the icon from the theme object
+    // For custom themes, use the note icon or fallback to palette
+    const icon = theme?.icon ?? noteIcon ?? "bx bx-palette";
+    const label = theme?.title ?? fallbackLabel;
+
+    return (
+        <>
+            <span className={icon} style={{ marginRight: "8px" }} />
+            {label}
+        </>
+    );
+}
+
 interface FontFamilyEntry {
     value: FontFamily;
     label?: string;
@@ -125,25 +170,19 @@ function UserInterface() {
 
     useEffect(() => {
         server.get<Theme[]>("options/user-themes").then((userThemes) => {
-            // Add placeholder icon for custom themes
-            setCustomThemes(userThemes.map(t => ({ ...t, icon: "bx bx-palette" })));
+            setCustomThemes(userThemes);
         });
     }, []);
 
     // Find current theme for display
     const allThemes = [...MODERN_THEMES, ...LEGACY_THEMES, ...customThemes];
     const currentTheme = allThemes.find(t => t.val === theme);
-    const currentThemeLabel = currentTheme?.title ?? theme ?? "";
-    const currentThemeIcon = currentTheme?.icon ?? "bx bx-palette";
 
     return (
         <OptionsSection title={t("theme.title")}>
             <OptionsRow name="theme" label={t("theme.theme_label")}>
                 <Dropdown
-                    text={<>
-                        <span className={currentThemeIcon} style={{ marginRight: "8px" }} />
-                        {currentThemeLabel}
-                    </>}
+                    text={<CurrentThemeDisplay theme={currentTheme} fallbackLabel={theme ?? ""} />}
                 >
                     <FormListHeader text={t("theme.modern_themes")} />
                     {MODERN_THEMES.map(t => (
@@ -170,15 +209,13 @@ function UserInterface() {
                     {customThemes.length > 0 && (
                         <>
                             <FormListHeader text={t("theme.custom_themes")} />
-                            {customThemes.map(t => (
-                                <FormListItem
-                                    key={t.val}
-                                    icon={t.icon}
-                                    selected={theme === t.val}
-                                    onClick={() => setTheme(t.val)}
-                                >
-                                    {t.title}
-                                </FormListItem>
+                            {customThemes.map(ct => (
+                                <CustomThemeItem
+                                    key={ct.val}
+                                    theme={ct}
+                                    selected={theme === ct.val}
+                                    onClick={() => setTheme(ct.val)}
+                                />
                             ))}
                         </>
                     )}