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LibCore+LibGUI: Add fallible versions of Widget::load_from_gml()

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The existing `load_from_gml()` methods look the same as before from the
outside. Inside though, they now forward to `try_load_from_gml()` which
returns Error when things go wrong. It also now calls the `try_create()`
factory method for Objects instead of the `construct()` one.
This commit is contained in:
Sam Atkins 2022-12-28 20:35:16 +00:00 • committed by Tim Flynn
parent e58fe1cdd7
commit b32f5dbcff
8 changed files with 73 additions and 69 deletions
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20
Userland/Libraries/LibGUI/Widget.h
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@ -32,12 +32,12 @@ extern Core::ObjectClassRegistration registration_Widget;
}
}
#define REGISTER_WIDGET(namespace_, class_name) \
namespace Core { \
namespace Registration { \
Core::ObjectClassRegistration registration_##class_name( \
#namespace_ "::" #class_name##sv, []() { return static_ptr_cast<Core::Object>(namespace_::class_name::construct()); }, &registration_Widget); \
} \
#define REGISTER_WIDGET(namespace_, class_name) \
namespace Core { \
namespace Registration { \
Core::ObjectClassRegistration registration_##class_name( \
#namespace_ "::" #class_name##sv, []() -> ErrorOr<NonnullRefPtr<Core::Object>> { return static_ptr_cast<Core::Object>(TRY(namespace_::class_name::try_create())); }, &registration_Widget); \
} \
}
namespace GUI {
@ -353,7 +353,11 @@ public:
AK::Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>> const& override_cursor() const { return m_override_cursor; }
void set_override_cursor(AK::Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>>);
bool load_from_gml(StringView);
ErrorOr<void> try_load_from_gml(StringView);
ErrorOr<void> try_load_from_gml(StringView, RefPtr<Core::Object> (*unregistered_child_handler)(DeprecatedString const&));
// FIXME: Replace all uses of load_from_gml() with try_load_from_gml()
bool load_from_gml(StringView gml_string);
bool load_from_gml(StringView, RefPtr<Core::Object> (*unregistered_child_handler)(DeprecatedString const&));
// FIXME: remove this when all uses of shrink_to_fit are eliminated
@ -363,7 +367,7 @@ public:
bool has_pending_drop() const;
// In order for others to be able to call this, it needs to be public.
virtual bool load_from_gml_ast(NonnullRefPtr<GUI::GML::Node> ast, RefPtr<Core::Object> (*unregistered_child_handler)(DeprecatedString const&));
virtual ErrorOr<void> load_from_gml_ast(NonnullRefPtr<GUI::GML::Node> ast, RefPtr<Core::Object> (*unregistered_child_handler)(DeprecatedString const&));
protected:
Widget();