From 5b8674cd15558280bf2ad3d39bcd2ab89ab72508 Mon Sep 17 00:00:00 2001
From: Ali Mihandoost <ali.mihandoost@gmail.com>
Date: Sun, 26 Feb 2023 07:37:43 +0330
Subject: [PATCH] feat(element/fsm): add render_unresolved, render_resolving

---
 ui/element/src/mixins/state-machine.ts | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/ui/element/src/mixins/state-machine.ts b/ui/element/src/mixins/state-machine.ts
index 060e9071b..bd6a869a9 100644
--- a/ui/element/src/mixins/state-machine.ts
+++ b/ui/element/src/mixins/state-machine.ts
@@ -1,10 +1,13 @@
+import {nothing, PropertyValues} from '../lit.js';
+
 import type {SignalMixinInterface} from './signal.js';
-import type {PropertyValues} from '../lit.js';
 import type {FiniteStateMachine} from '@alwatr/fsm';
 import type {Constructor} from '@alwatr/type';
 
 export declare class StateMachineMixinInterface<TMachine extends FiniteStateMachine> extends SignalMixinInterface {
-  stateMachine: TMachine;
+  protected stateMachine: TMachine;
+  protected render_unresolved(): unknown;
+  protected render_resolving(): unknown;
 }
 
 export function StateMachineMixin<T extends Constructor<SignalMixinInterface>, TMachine extends FiniteStateMachine>(
@@ -12,7 +15,14 @@ export function StateMachineMixin<T extends Constructor<SignalMixinInterface>, T
     superClass: T,
 ): Constructor<StateMachineMixinInterface<TMachine>> & T {
   class StateMachineMixinClass extends superClass {
-    stateMachine = stateMachine;
+    protected stateMachine = stateMachine;
+
+    protected render_unresolved(): unknown {
+      return nothing;
+    }
+    protected render_resolving(): unknown {
+      return nothing;
+    }
 
     override connectedCallback(): void {
       super.connectedCallback();