Unimplement JsExpressionable from JsCallback

docs/callbacks.rst

@@ -210,7 +210,7 @@ When you trigger callback, you'll see the output::
     {"success": true, "message": "Success", "eval": "alert(\"ok\")"}
 
 This is how JsCallback renders actions and sends them back to the browser. In order to retrieve and execute actions,
-you'll need a JavaScript routine. Luckily JsCallback also implements JsExpressionable, so it, in itself is an action.
+you'll need a JavaScript routine. Luckily JsCallback can be passed to :php:meth:`View::on()` as an JS action.
 
 Let me try this again. JsCallback is an :ref:`js_action` which will execute request towards a callback-URL that will
 execute PHP method returning one or more :ref:`js_action` which will be received and executed by the original action.

src/Console.php

@@ -138,7 +138,7 @@ public function set($fx = null, $event = null)
      */
     public function jsExecute()
     {
-        return $this->sse;
+        return $this->sse->getJsCallback();
     }
 
     private function escapeOutputHtml(string $message): string

src/JsCallback.php

@@ -4,7 +4,7 @@
 
 namespace Atk4\Ui;
 
-class JsCallback extends Callback implements JsExpressionable
+class JsCallback extends Callback
 {
     /** @var array Holds information about arguments passed in to the callback. */
     public $args = [];
@@ -47,7 +47,7 @@ protected function flattenArray(array $response): array
         return $res;
     }
 
-    public function jsRender(): string
+    public function getJsCallback(): JsExpression
     {
         $this->getApp(); // assert has App
 
@@ -57,7 +57,7 @@ public function jsRender(): string
             'confirm' => $this->confirm,
             'apiConfig' => $this->apiConfig,
             'storeName' => $this->storeName,
-        ])->jsRender();
+        ]);
     }
 
     /**

src/View.php

@@ -1021,7 +1021,9 @@ public function on(string $event, $selector = null, $action = null, array $defau
                 return $action($chain, ...$args);
             }, $arguments);
 
-            $actions[] = $cb;
+            $actions[] = $cb->getJsCallback();
+        } elseif ($action instanceof JsCallback) {
+            $actions[] = $action->getJsCallback();
         } elseif ($action instanceof UserAction\ExecutorInterface || $action instanceof Model\UserAction) {
             // Setup UserAction executor.
             $ex = $action instanceof Model\UserAction ? $this->getExecutorFactory()->create($action, $this) : $action;
@@ -1044,7 +1046,7 @@ public function on(string $event, $selector = null, $action = null, array $defau
                 if ($defaults['apiConfig'] ?? null) {
                     $ex->apiConfig = $defaults['apiConfig'];
                 }
-                $actions[] = $ex;
+                $actions[] = $ex->getJsCallback();
                 $ex->executeModelAction($arguments);
             } else {
                 throw new Exception('Executor must be of type UserAction\JsCallbackExecutor or extend View and implement UserAction\JsExecutorInterface');