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KeyboardMapper: Propagate errors using ErrorOr and TRY

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KeyboardMapperWidget's load_map_from_file, load_map_from_system, save,
and save_to_file now all return ErrorOr<void> and no longer handles
alerting the user to potential errors.

main is now responsible for handling errors originating from its calls
to these four functions; it will simply alert the user using the new
method KeyboardMapperWidget::show_error_to_user(Error), which simply
creates a MassageBox displaying the error's string_literal.

This makes the whole program slight more clean feeling :^).
This commit is contained in:
RasmusNylander 2021-12-16 19:39:38 +01:00 • committed by Andreas Kling
parent 4e65c4dae4
commit 9678ff15a8
3 changed files with 41 additions and 53 deletions
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9
Userland/Applications/KeyboardMapper/KeyboardMapperWidget.h
View file

@ -17,10 +17,11 @@ public:
virtual ~KeyboardMapperWidget() override;
void create_frame();
void load_from_file(const String);
void load_from_system();
void save();
void save_to_file(StringView);
ErrorOr<void> load_map_from_file(const String&);
ErrorOr<void> load_map_from_system();
ErrorOr<void> save();
ErrorOr<void> save_to_file(StringView);
void show_error_to_user(Error);
protected:
virtual void keydown_event(GUI::KeyEvent&) override;