From 2642abb77309c232b98b9176877454ca845810e2 Mon Sep 17 00:00:00 2001
From: pbrw <borowski.pb1@gmail.com>
Date: Thu, 25 Nov 2021 02:54:30 +0100
Subject: [PATCH] Eyes: Use TRY() a lot more :^)

---
 Userland/Demos/Eyes/CMakeLists.txt |  2 +-
 Userland/Demos/Eyes/main.cpp       | 42 +++++++++++-------------------
 2 files changed, 16 insertions(+), 28 deletions(-)

diff --git a/Userland/Demos/Eyes/CMakeLists.txt b/Userland/Demos/Eyes/CMakeLists.txt
index 2431a7dcc6b..a8f47092e85 100644
--- a/Userland/Demos/Eyes/CMakeLists.txt
+++ b/Userland/Demos/Eyes/CMakeLists.txt
@@ -9,4 +9,4 @@ set(SOURCES
 )
 
 serenity_app(Eyes ICON app-eyes)
-target_link_libraries(Eyes LibGUI LibGfx)
+target_link_libraries(Eyes LibGUI LibGfx LibMain)
diff --git a/Userland/Demos/Eyes/main.cpp b/Userland/Demos/Eyes/main.cpp
index a79ae753578..f5e2cb734a6 100644
--- a/Userland/Demos/Eyes/main.cpp
+++ b/Userland/Demos/Eyes/main.cpp
@@ -6,14 +6,16 @@
 
 #include "EyesWidget.h"
 #include <LibCore/ArgsParser.h>
+#include <LibCore/System.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/Icon.h>
 #include <LibGUI/Menu.h>
 #include <LibGUI/Menubar.h>
 #include <LibGUI/Window.h>
+#include <LibMain/Main.h>
 #include <unistd.h>
 
-int main(int argc, char* argv[])
+ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     int num_eyes = 2;
     int max_in_row = 13;
@@ -27,29 +29,15 @@ int main(int argc, char* argv[])
     args_parser.add_option(max_in_row, "Maximum number of eyes in a row", "max-in-row", 'm', "number");
     args_parser.add_option(grid_rows, "Number of rows in grid (incompatible with --number)", "grid-rows", 'r', "number");
     args_parser.add_option(grid_columns, "Number of columns in grid (incompatible with --number)", "grid-cols", 'c', "number");
-    args_parser.parse(argc, argv);
+    args_parser.parse(arguments);
 
-    if (pledge("stdio recvfd sendfd rpath unix cpath wpath thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
+    TRY(Core::System::pledge("stdio recvfd sendfd rpath unix cpath wpath thread", nullptr));
 
-    auto app = GUI::Application::construct(argc, argv);
+    auto app = TRY(GUI::Application::try_create(arguments));
 
-    if (pledge("stdio recvfd sendfd rpath cpath wpath thread", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    if (unveil("/res", "r") < 0) {
-        perror("unveil");
-        return 1;
-    }
-
-    if (unveil(nullptr, nullptr) < 0) {
-        perror("unveil");
-        return 1;
-    }
+    TRY(Core::System::pledge("stdio recvfd sendfd rpath cpath wpath thread", nullptr));
+    TRY(Core::System::unveil("/res", "r"));
+    TRY(Core::System::unveil(nullptr, nullptr));
 
     if ((grid_rows > 0) ^ (grid_columns > 0)) {
         warnln("Expected either both or none of 'grid-rows' and 'grid-cols' to be passed.");
@@ -70,19 +58,19 @@ int main(int argc, char* argv[])
 
     auto app_icon = GUI::Icon::default_icon("app-eyes");
 
-    auto window = GUI::Window::construct();
+    auto window = TRY(GUI::Window::try_create());
     window->set_title("Eyes");
     window->set_icon(app_icon.bitmap_for_size(16));
     window->resize(75 * (full_rows > 0 ? max_in_row : extra_columns), 100 * (full_rows + (extra_columns > 0 ? 1 : 0)));
     window->set_has_alpha_channel(true);
 
-    window->set_main_widget<EyesWidget>(num_eyes, full_rows, extra_columns);
+    TRY(window->try_set_main_widget<EyesWidget>(num_eyes, full_rows, extra_columns));
 
-    auto& file_menu = window->add_menu("&File");
-    file_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) { app->quit(); }));
+    auto file_menu = TRY(window->try_add_menu("&File"));
+    TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([&](auto&) { app->quit(); })));
 
-    auto& help_menu = window->add_menu("&Help");
-    help_menu.add_action(GUI::CommonActions::make_about_action("Eyes Demo", app_icon, window));
+    auto help_menu = TRY(window->try_add_menu("&Help"));
+    TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action("Eyes Demo", app_icon, window)));
 
     window->show();