Add event::Event::unconsume().

include/event.hpp

@@ -91,6 +91,11 @@ struct Base {
 		context->consumed = true;
 		context->target = w;
 	}
+	void unconsume() const {
+		if (!context)
+			return;
+		context->consumed = false;
+	}
 	bool isConsumed() const {
 		if (!context)
 			return false;

include/ui/MenuItem.hpp

@@ -23,6 +23,7 @@ struct MenuItem : MenuEntry {
 	virtual Menu* createChildMenu() {
 		return NULL;
 	}
+	void onAction(const event::Action& e) override;
 };
 
 

src/ui/MenuItem.cpp

@@ -76,7 +76,7 @@ void MenuItem::doAction() {
 	// Consume event by default, but allow action to un-consume it to prevent the menu from being removed.
 	eAction.consume(this);
 	onAction(eAction);
-	if (!cAction.target)
+	if (!cAction.consumed)
 		return;
 
 	MenuOverlay* overlay = getAncestorOfType<MenuOverlay>();
@@ -86,5 +86,9 @@ void MenuItem::doAction() {
 }
 
 
+void MenuItem::onAction(const event::Action& e) {
+}
+
+
 } // namespace ui
 } // namespace rack