diff --git a/src/deck-components/FooterLegend.ts b/src/deck-components/FooterLegend.ts
index 40ebc9f..cd53197 100644
--- a/src/deck-components/FooterLegend.ts
+++ b/src/deck-components/FooterLegend.ts
@@ -1,3 +1,43 @@
+export enum GamepadButton {
+    INVALID,
+    OK,
+    CANCEL,
+    SECONDARY,
+    OPTIONS,
+    BUMPER_LEFT,
+    BUMPER_RIGHT,
+    TRIGGER_LEFT,
+    TRIGGER_RIGHT,
+    DIR_UP,
+    DIR_DOWN,
+    DIR_LEFT,
+    DIR_RIGHT,
+    SELECT,
+    START,
+    LSTICK_CLICK,
+    RSTICK_CLICK,
+    LSTICK_TOUCH,
+    RSTICK_TOUCH,
+    LPAD_TOUCH,
+    LPAD_CLICK,
+    RPAD_TOUCH,
+    RPAD_CLICK,
+    REAR_LEFT_UPPER,
+    REAR_LEFT_LOWER,
+    REAR_RIGHT_UPPER,
+    REAR_RIGHT_LOWER,
+    STEAM_GUIDE,
+    STEAM_QUICK_MENU
+}
+
+export interface GamepadEventDetail {
+    button: number;
+    is_repeat?: boolean;
+    source: number;
+}
+
+export type GamepadEvent = CustomEvent<GamepadEventDetail>
+
 export interface FooterLegendProps {
     actionDescriptionMap?: unknown;
     onOKActionDescription?: string;
@@ -5,14 +45,14 @@ export interface FooterLegendProps {
     onSecondaryActionDescription?: string;
     onOptionsActionDescription?: string;
     onMenuActionDescription?: string;
-    onButtonDown?: () => void;
-    onButtonUp?: () => void;
-    onOKButton?: () => void;
-    onCancelButton?: () => void;
-    onSecondaryButton?: () => void;
-    onOptionsButton?: () => void;
-    onGamepadDirection?: () => void;
-    onGamepadFocus?: () => void;
-    onGamepadBlur?: () => void;
-    onMenuButton?: () => void;
+    onButtonDown?: (evt: GamepadEvent) => void;
+    onButtonUp?: (evt: GamepadEvent) => void;
+    onOKButton?: (evt: GamepadEvent) => void;
+    onCancelButton?: (evt: GamepadEvent) => void;
+    onSecondaryButton?: (evt: GamepadEvent) => void;
+    onOptionsButton?: (evt: GamepadEvent) => void;
+    onGamepadDirection?: (evt: GamepadEvent) => void;
+    onGamepadFocus?: (evt: GamepadEvent) => void;
+    onGamepadBlur?: (evt: GamepadEvent) => void;
+    onMenuButton?: (evt: GamepadEvent) => void;
 }
\ No newline at end of file