system/serenity
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Run: Fix bug where it would crash because uninitialized main widget

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The set_main_widget<T>() function only calls the construct and not
`try_create()` that the GMLCompiler generates so all calls to
`find_descendant_of_type_named()` would result in null
pointers that would resolve in a crash.
This commit is contained in:
Bastiaan van der Plaat 2024-01-30 21:54:20 +01:00 committed by Andreas Kling
parent 747fd86f26
commit 582bf1eaf3
3 changed files with 12 additions and 3 deletions
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9
Userland/Applications/Run/RunWindow.cpp
View file

@ -26,6 +26,8 @@
#include <sys/wait.h>
#include <unistd.h>
namespace Run {
RunWindow::RunWindow()
: m_path_history()
, m_path_history_model(GUI::ItemListModel<ByteString>::create(m_path_history))
@ -41,7 +43,8 @@ RunWindow::RunWindow()
set_resizable(false);
set_minimizable(false);
auto main_widget = set_main_widget<Run::MainWidget>();
auto main_widget = MUST(Run::MainWidget::try_create());
set_main_widget(main_widget);
m_icon_image_widget = *main_widget->find_descendant_of_type_named<GUI::ImageWidget>("icon");
m_icon_image_widget->set_bitmap(app_icon.bitmap_for_size(32));
@ -62,7 +65,7 @@ RunWindow::RunWindow()
close();
};
m_browse_button = *find_descendant_of_type_named<GUI::DialogButton>("browse_button");
m_browse_button = *main_widget->find_descendant_of_type_named<GUI::DialogButton>("browse_button");
m_browse_button->on_click = [this](auto) {
Optional<ByteString> path = GUI::FilePicker::get_open_filepath(this, {}, Core::StandardPaths::home_directory(), false, GUI::Dialog::ScreenPosition::Center);
if (path.has_value())
@ -189,3 +192,5 @@ ErrorOr<void> RunWindow::save_history()
return {};
}
}

4
Userland/Applications/Run/RunWindow.h
View file

@ -13,6 +13,8 @@
#include <LibGUI/ItemListModel.h>
#include <LibGUI/Window.h>
namespace Run {
class RunWindow final : public GUI::Window {
C_OBJECT(RunWindow)
public:
@ -40,3 +42,5 @@ private:
RefPtr<GUI::Button> m_browse_button;
RefPtr<GUI::ComboBox> m_path_combo_box;
};
}

2
Userland/Applications/Run/main.cpp
View file

@ -15,7 +15,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
TRY(Core::System::pledge("stdio recvfd sendfd thread cpath rpath wpath unix proc exec"));
auto app = TRY(GUI::Application::create(arguments));
auto window = TRY(RunWindow::try_create());
auto window = TRY(Run::RunWindow::try_create());
constexpr int margin = 16;
window->move_to(margin, GUI::Desktop::the().rect().bottom() - 1 - GUI::Desktop::the().taskbar_height() - margin - window->height());