LibGUI: Make it easier to create checkable GUI::Actions

This patch adds GUI::Action::create_checkable() helpers that work just
like the existing create() helpers, but the actions become checkable(!)

Clients are no longer required to manage the checked state of their
actions manually, but instead they will be checked/unchecked as needed
by GUI::Action itself before the activation hook is fired.

1 files changed, 1 insertions, 3 deletions

diff --git a/Applications/Terminal/main.cpp b/Applications/Terminal/main.cpp
index a89a5c3a79..1fda2345c1 100644
--- a/Applications/Terminal/main.cpp
+++ b/Applications/Terminal/main.cpp
@@ -278,8 +278,7 @@ int main(int argc, char** argv)
     font_action_group.set_exclusive(true);
     auto& font_menu = menubar->add_menu("Font");
     GUI::FontDatabase::the().for_each_fixed_width_font([&](const StringView& font_name) {
-        auto action = GUI::Action::create(font_name, [&](GUI::Action& action) {
-            action.set_checked(true);
+        auto action = GUI::Action::create_checkable(font_name, [&](auto& action) {
             terminal.set_font(GUI::FontDatabase::the().get_by_name(action.text()));
             auto metadata = GUI::FontDatabase::the().get_metadata_by_name(action.text());
             ASSERT(metadata.has_value());
@@ -288,7 +287,6 @@ int main(int argc, char** argv)
             terminal.force_repaint();
         });
         font_action_group.add_action(*action);
-        action->set_checkable(true);
         if (terminal.font().name() == font_name)
             action->set_checked(true);
         font_menu.add_action(*action);