GameOfLife: TRY() all the things in serenity_main() :^)

1 files changed, 57 insertions, 57 deletions

diff --git a/Userland/Games/GameOfLife/main.cpp b/Userland/Games/GameOfLife/main.cpp
index 455623738f..ad249f201d 100644
--- a/Userland/Games/GameOfLife/main.cpp
+++ b/Userland/Games/GameOfLife/main.cpp
@@ -45,41 +45,41 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     window->set_double_buffering_enabled(false);
     window->set_title("Game Of Life");
 
-    auto& main_widget = window->set_main_widget<GUI::Widget>();
-    main_widget.load_from_gml(game_of_life_gml);
-    main_widget.set_fill_with_background_color(true);
+    auto main_widget = TRY(window->try_set_main_widget<GUI::Widget>());
+    main_widget->load_from_gml(game_of_life_gml);
+    main_widget->set_fill_with_background_color(true);
 
-    auto& main_toolbar = *main_widget.find_descendant_of_type_named<GUI::Toolbar>("toolbar");
+    auto& main_toolbar = *main_widget->find_descendant_of_type_named<GUI::Toolbar>("toolbar");
     main_toolbar.layout()->set_margins({ 0, 6 });
 
-    auto& board_widget_container = *main_widget.find_descendant_of_type_named<GUI::Widget>("board_widget_container");
-    auto& board_layout = board_widget_container.set_layout<GUI::VerticalBoxLayout>();
-    board_layout.set_spacing(0);
-    auto& board_widget = board_widget_container.add<BoardWidget>(board_rows, board_columns);
-    board_widget.randomize_cells();
+    auto& board_widget_container = *main_widget->find_descendant_of_type_named<GUI::Widget>("board_widget_container");
+    auto board_layout = TRY(board_widget_container.try_set_layout<GUI::VerticalBoxLayout>());
+    board_layout->set_spacing(0);
+    auto board_widget = TRY(board_widget_container.try_add<BoardWidget>(board_rows, board_columns));
+    board_widget->randomize_cells();
 
-    auto& statusbar = *main_widget.find_descendant_of_type_named<GUI::Statusbar>("statusbar");
+    auto& statusbar = *main_widget->find_descendant_of_type_named<GUI::Statusbar>("statusbar");
     statusbar.set_text(click_tip);
 
-    auto& columns_spinbox = *main_widget.find_descendant_of_type_named<GUI::SpinBox>("columns_spinbox");
-    auto& rows_spinbox = *main_widget.find_descendant_of_type_named<GUI::SpinBox>("rows_spinbox");
+    auto& columns_spinbox = *main_widget->find_descendant_of_type_named<GUI::SpinBox>("columns_spinbox");
+    auto& rows_spinbox = *main_widget->find_descendant_of_type_named<GUI::SpinBox>("rows_spinbox");
 
     columns_spinbox.set_value(board_columns);
     rows_spinbox.set_value(board_rows);
 
     auto size_changed_function = [&] {
         statusbar.set_text(click_tip);
-        board_widget.resize_board(rows_spinbox.value(), columns_spinbox.value());
-        board_widget.update();
+        board_widget->resize_board(rows_spinbox.value(), columns_spinbox.value());
+        board_widget->update();
     };
 
     rows_spinbox.on_change = [&](auto) { size_changed_function(); };
     columns_spinbox.on_change = [&](auto) { size_changed_function(); };
 
-    auto& interval_spinbox = *main_widget.find_descendant_of_type_named<GUI::SpinBox>("interval_spinbox");
+    auto& interval_spinbox = *main_widget->find_descendant_of_type_named<GUI::SpinBox>("interval_spinbox");
 
     interval_spinbox.on_change = [&](auto value) {
-        board_widget.set_running_timer_interval(value);
+        board_widget->set_running_timer_interval(value);
     };
 
     interval_spinbox.set_value(150);
@@ -88,88 +88,88 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     auto play_icon = Gfx::Bitmap::try_load_from_file("/res/icons/16x16/play.png").release_value_but_fixme_should_propagate_errors();
 
     auto toggle_running_action = GUI::Action::create("&Toggle Running", { Mod_None, Key_Return }, *play_icon, [&](GUI::Action&) {
-        board_widget.set_running(!board_widget.is_running());
+        board_widget->set_running(!board_widget->is_running());
     });
 
     toggle_running_action->set_checkable(true);
-    auto& toggle_running_toolbar_button = main_toolbar.add_action(toggle_running_action);
+    auto toggle_running_toolbar_button = TRY(main_toolbar.try_add_action(toggle_running_action));
 
     auto run_one_generation_action = GUI::Action::create("Run &Next Generation", { Mod_Ctrl, Key_Equal }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/go-forward.png").release_value_but_fixme_should_propagate_errors(), [&](const GUI::Action&) {
         statusbar.set_text(click_tip);
-        board_widget.run_generation();
+        board_widget->run_generation();
     });
-    main_toolbar.add_action(run_one_generation_action);
+    TRY(main_toolbar.try_add_action(run_one_generation_action));
 
     auto clear_board_action = GUI::Action::create("&Clear board", { Mod_Ctrl, Key_N }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/delete.png").release_value_but_fixme_should_propagate_errors(), [&](auto&) {
         statusbar.set_text(click_tip);
-        board_widget.clear_cells();
-        board_widget.update();
+        board_widget->clear_cells();
+        board_widget->update();
     });
-    main_toolbar.add_action(clear_board_action);
+    TRY(main_toolbar.try_add_action(clear_board_action));
 
     auto randomize_cells_action = GUI::Action::create("&Randomize board", { Mod_Ctrl, Key_R }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/reload.png").release_value_but_fixme_should_propagate_errors(), [&](auto&) {
         statusbar.set_text(click_tip);
-        board_widget.randomize_cells();
-        board_widget.update();
+        board_widget->randomize_cells();
+        board_widget->update();
     });
-    main_toolbar.add_action(randomize_cells_action);
+    TRY(main_toolbar.try_add_action(randomize_cells_action));
 
     auto rotate_pattern_action = GUI::Action::create("&Rotate pattern", { 0, Key_R }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/redo.png").release_value_but_fixme_should_propagate_errors(), [&](auto&) {
-        board_widget.selected_pattern()->rotate_clockwise();
+        board_widget->selected_pattern()->rotate_clockwise();
     });
     rotate_pattern_action->set_enabled(false);
-    main_toolbar.add_action(rotate_pattern_action);
+    TRY(main_toolbar.try_add_action(rotate_pattern_action));
 
-    auto& game_menu = window->add_menu("&Game");
+    auto game_menu = TRY(window->try_add_menu("&Game"));
 
-    game_menu.add_action(clear_board_action);
-    game_menu.add_action(randomize_cells_action);
-    game_menu.add_separator();
-    game_menu.add_action(toggle_running_action);
-    game_menu.add_action(run_one_generation_action);
-    game_menu.add_separator();
-    game_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
+    TRY(game_menu->try_add_action(clear_board_action));
+    TRY(game_menu->try_add_action(randomize_cells_action));
+    TRY(game_menu->try_add_separator());
+    TRY(game_menu->try_add_action(toggle_running_action));
+    TRY(game_menu->try_add_action(run_one_generation_action));
+    TRY(game_menu->try_add_separator());
+    TRY(game_menu->try_add_action(GUI::CommonActions::make_quit_action([](auto&) {
         GUI::Application::the()->quit();
-    }));
+    })));
 
-    auto& help_menu = window->add_menu("&Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Game Of Life", app_icon, window));
+    auto help_menu = TRY(window->try_add_menu("&Help"));
+    TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action("Game Of Life", app_icon, window)));
 
-    board_widget.on_running_state_change = [&]() {
-        if (board_widget.is_running()) {
+    board_widget->on_running_state_change = [&]() {
+        if (board_widget->is_running()) {
             statusbar.set_text("Running...");
-            toggle_running_toolbar_button.set_icon(*paused_icon);
-            main_widget.set_override_cursor(Gfx::StandardCursor::None);
+            toggle_running_toolbar_button->set_icon(*paused_icon);
+            main_widget->set_override_cursor(Gfx::StandardCursor::None);
         } else {
             statusbar.set_text(click_tip);
-            toggle_running_toolbar_button.set_icon(*play_icon);
-            main_widget.set_override_cursor(Gfx::StandardCursor::Drag);
+            toggle_running_toolbar_button->set_icon(*play_icon);
+            main_widget->set_override_cursor(Gfx::StandardCursor::Drag);
         }
 
-        interval_spinbox.set_value(board_widget.running_timer_interval());
+        interval_spinbox.set_value(board_widget->running_timer_interval());
 
-        rows_spinbox.set_enabled(!board_widget.is_running());
-        columns_spinbox.set_enabled(!board_widget.is_running());
-        interval_spinbox.set_enabled(!board_widget.is_running());
+        rows_spinbox.set_enabled(!board_widget->is_running());
+        columns_spinbox.set_enabled(!board_widget->is_running());
+        interval_spinbox.set_enabled(!board_widget->is_running());
 
-        run_one_generation_action->set_enabled(!board_widget.is_running());
-        clear_board_action->set_enabled(!board_widget.is_running());
-        randomize_cells_action->set_enabled(!board_widget.is_running());
+        run_one_generation_action->set_enabled(!board_widget->is_running());
+        clear_board_action->set_enabled(!board_widget->is_running());
+        randomize_cells_action->set_enabled(!board_widget->is_running());
 
-        board_widget.update();
+        board_widget->update();
     };
 
-    board_widget.on_stall = [&] {
+    board_widget->on_stall = [&] {
         toggle_running_action->activate();
         statusbar.set_text("Stalled...");
     };
 
-    board_widget.on_cell_toggled = [&](auto, auto, auto) {
+    board_widget->on_cell_toggled = [&](auto, auto, auto) {
         statusbar.set_text(click_tip);
     };
 
-    board_widget.on_pattern_selection_state_change = [&] {
-        rotate_pattern_action->set_enabled(board_widget.selected_pattern() != nullptr);
+    board_widget->on_pattern_selection_state_change = [&] {
+        rotate_pattern_action->set_enabled(board_widget->selected_pattern() != nullptr);
     };
 
     window->resize(500, 420);