From dc47fce2d925a4fd929331354e22f502435ef4f1 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Wed, 24 Nov 2021 13:12:39 +0100
Subject: LibGUI: Add GUI::Window::try_set_main_widget<T>(...)

This is a fallible variant of set_main_widget<T>() that returns ErrorOr.
---
 Userland/Libraries/LibGUI/Window.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'Userland/Libraries/LibGUI/Window.h')

diff --git a/Userland/Libraries/LibGUI/Window.h b/Userland/Libraries/LibGUI/Window.h
index 3e5ee31bbf..8cca40b193 100644
--- a/Userland/Libraries/LibGUI/Window.h
+++ b/Userland/Libraries/LibGUI/Window.h
@@ -135,6 +135,14 @@ public:
     const Widget* main_widget() const { return m_main_widget; }
     void set_main_widget(Widget*);
 
+    template<class T, class... Args>
+    inline ErrorOr<NonnullRefPtr<T>> try_set_main_widget(Args&&... args)
+    {
+        auto widget = TRY(T::try_create(forward<Args>(args)...));
+        set_main_widget(widget.ptr());
+        return widget;
+    }
+
     template<class T, class... Args>
     inline T& set_main_widget(Args&&... args)
     {
-- 
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