LibGUI: Add GUI::TabWidget::try_add_tab<T>(...)

This is a fallible variant of add_tab<T>(...) that returns ErrorOr.

1 files changed, 10 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGUI/TabWidget.h b/Userland/Libraries/LibGUI/TabWidget.h
index bd232857e1..ac0d5402d0 100644
--- a/Userland/Libraries/LibGUI/TabWidget.h
+++ b/Userland/Libraries/LibGUI/TabWidget.h
@@ -36,10 +36,20 @@ public:
     GUI::Margins const& container_margins() const { return m_container_margins; }
     void set_container_margins(GUI::Margins const&);
 
+    ErrorOr<void> try_add_widget(StringView, Widget&);
+
     void add_widget(StringView, Widget&);
     void remove_widget(Widget&);
 
     template<class T, class... Args>
+    ErrorOr<NonnullRefPtr<T>> try_add_tab(StringView title, Args&&... args)
+    {
+        auto t = TRY(T::try_create(forward<Args>(args)...));
+        TRY(try_add_widget(title, *t));
+        return *t;
+    }
+
+    template<class T, class... Args>
     T& add_tab(StringView title, Args&&... args)
     {
         auto t = T::construct(forward<Args>(args)...);