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HexEditor: Make HexEditor::open_new_file fallible and reduce branching

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Returning a `bool` is meaningless, so let's make it more expresive :^)
This commit is contained in:
James Puleo 2022-07-28 03:34:15 -04:00 committed by Tim Flynn
parent 035d63f528
commit 88cf40179d
Notes: sideshowbarker 2024-07-17 08:27:34 +09:00 
Author: https://github.com/drunderscore
Commit: https://github.com/SerenityOS/serenity/commit/88cf40179d
Pull-request: https://github.com/SerenityOS/serenity/pull/14721
3 changed files with 15 additions and 18 deletions
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11
Userland/Applications/HexEditor/HexEditor.cpp
View file

@ -49,14 +49,9 @@ HexEditor::HexEditor()
m_blink_timer->start();
}
bool HexEditor::open_new_file(size_t size)
ErrorOr<void> HexEditor::open_new_file(size_t size)
{
auto maybe_buffer = ByteBuffer::create_zeroed(size);
if (maybe_buffer.is_error()) {
return false;
}
m_document = make<HexDocumentMemory>(maybe_buffer.release_value());
m_document = make<HexDocumentMemory>(TRY(ByteBuffer::create_zeroed(size)));
set_content_length(m_document->size());
m_position = 0;
m_cursor_at_low_nibble = false;
@ -66,7 +61,7 @@ bool HexEditor::open_new_file(size_t size)
update();
update_status();
return true;
return {};
}
void HexEditor::open_file(NonnullRefPtr<Core::File> file)

2
Userland/Applications/HexEditor/HexEditor.h
View file

@ -33,7 +33,7 @@ public:
virtual ~HexEditor() override = default;
size_t buffer_size() const { return m_document->size(); }
bool open_new_file(size_t size);
ErrorOr<void> open_new_file(size_t size);
void open_file(NonnullRefPtr<Core::File> file);
void fill_selection(u8 fill_byte);
Optional<u8> get_byte(size_t position);

18
Userland/Applications/HexEditor/HexEditorWidget.cpp
View file

@ -95,17 +95,19 @@ HexEditorWidget::HexEditorWidget()
m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/new.png"sv).release_value_but_fixme_should_propagate_errors(), [this](const GUI::Action&) {
String value;
if (request_close() && GUI::InputBox::show(window(), value, "Enter new file size:"sv, "New file size"sv) == GUI::InputBox::ExecResult::OK && !value.is_empty()) {
auto file_size = value.to_int();
if (file_size.has_value() && file_size.value() > 0) {
window()->set_modified(false);
if (!m_editor->open_new_file(file_size.value())) {
GUI::MessageBox::show(window(), "Entered file size is too large."sv, "Error"sv, GUI::MessageBox::Type::Error);
auto file_size = value.to_uint();
if (!file_size.has_value()) {
GUI::MessageBox::show(window(), "Invalid file size entered."sv, "Error"sv, GUI::MessageBox::Type::Error);
return;
}
set_path({});
} else {
GUI::MessageBox::show(window(), "Invalid file size entered."sv, "Error"sv, GUI::MessageBox::Type::Error);
if (auto error = m_editor->open_new_file(file_size.value()); error.is_error()) {
GUI::MessageBox::show(window(), String::formatted("Unable to open new file: {}"sv, error.error()), "Error"sv, GUI::MessageBox::Type::Error);
return;
}
set_path({});
window()->set_modified(false);
}
});