Add radio-button-looking entries to PopupMenu

They work exactly the same as current checkbox-decorated items, but in order to preserve compatibility, separate methods are used, like `add_radio_check_item()`. The other option would have been to add a new parameter at the end of `add_check_item()` and the like, but that would have forced callers to provide the defaults manually.

`is_item_checkable()`, `is_item_checked()` and `set_item_checked()` are used regardless the item is set to look as check box or radio button.

Keeping check in the name adds an additional clue about these facts.

Closes #13055.

1 files changed, 4 insertions, 0 deletions

diff --git a/editor/plugins/theme_editor_plugin.cpp b/editor/plugins/theme_editor_plugin.cpp
index 295d9439a..550dfb3ae 100644
--- a/editor/plugins/theme_editor_plugin.cpp
+++ b/editor/plugins/theme_editor_plugin.cpp
@@ -692,6 +692,10 @@ ThemeEditor::ThemeEditor() {
 	test_menu_button->get_popup()->add_check_item(TTR("Check Item"));
 	test_menu_button->get_popup()->add_check_item(TTR("Checked Item"));
 	test_menu_button->get_popup()->set_item_checked(2, true);
+	test_menu_button->get_popup()->add_separator();
+	test_menu_button->get_popup()->add_check_item(TTR("Radio Item"));
+	test_menu_button->get_popup()->add_radio_check_item(TTR("Checked Radio Item"));
+	test_menu_button->get_popup()->set_item_checked(5, true);
 	first_vb->add_child(test_menu_button);
 
 	OptionButton *test_option_button = memnew(OptionButton);