LibGUI: Allow to specify FilePicker window position

Userland/Libraries/LibGUI/FilePicker.cpp

@@ -30,9 +30,9 @@
 
 namespace GUI {
 
-Optional<String> FilePicker::get_open_filepath(Window* parent_window, const String& window_title, const StringView& path, bool folder)
+Optional<String> FilePicker::get_open_filepath(Window* parent_window, const String& window_title, const StringView& path, bool folder, ScreenPosition screen_position)
 {
-    auto picker = FilePicker::construct(parent_window, folder ? Mode::OpenFolder : Mode::Open, "", path);
+    auto picker = FilePicker::construct(parent_window, folder ? Mode::OpenFolder : Mode::Open, "", path, screen_position);
 
     if (!window_title.is_null())
         picker->set_title(window_title);
@@ -48,9 +48,9 @@ Optional<String> FilePicker::get_open_filepath(Window* parent_window, const Stri
     return {};
 }
 
-Optional<String> FilePicker::get_save_filepath(Window* parent_window, const String& title, const String& extension, const StringView& path)
+Optional<String> FilePicker::get_save_filepath(Window* parent_window, const String& title, const String& extension, const StringView& path, ScreenPosition screen_position)
 {
-    auto picker = FilePicker::construct(parent_window, Mode::Save, String::formatted("{}.{}", title, extension), path);
+    auto picker = FilePicker::construct(parent_window, Mode::Save, String::formatted("{}.{}", title, extension), path, screen_position);
 
     if (picker->exec() == Dialog::ExecOK) {
         String file_path = picker->selected_file();
@@ -63,8 +63,8 @@ Optional<String> FilePicker::get_save_filepath(Window* parent_window, const Stri
     return {};
 }
 
-FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& filename, const StringView& path)
-    : Dialog(parent_window)
+FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& filename, const StringView& path, ScreenPosition screen_position)
+    : Dialog(parent_window, screen_position)
     , m_model(FileSystemModel::create(path))
     , m_mode(mode)
 {

Userland/Libraries/LibGUI/FilePicker.h

@@ -28,8 +28,8 @@ public:
         Save
     };
 
-    static Optional<String> get_open_filepath(Window* parent_window, const String& window_title = {}, const StringView& path = Core::StandardPaths::home_directory(), bool folder = false);
-    static Optional<String> get_save_filepath(Window* parent_window, const String& title, const String& extension, const StringView& path = Core::StandardPaths::home_directory());
+    static Optional<String> get_open_filepath(Window* parent_window, const String& window_title = {}, const StringView& path = Core::StandardPaths::home_directory(), bool folder = false, ScreenPosition screen_position = Dialog::ScreenPosition::CenterWithinParent);
+    static Optional<String> get_save_filepath(Window* parent_window, const String& title, const String& extension, const StringView& path = Core::StandardPaths::home_directory(), ScreenPosition screen_position = Dialog::ScreenPosition::CenterWithinParent);
 
     virtual ~FilePicker() override;
 
@@ -43,7 +43,7 @@ private:
     // ^GUI::ModelClient
     virtual void model_did_update(unsigned) override;
 
-    FilePicker(Window* parent_window, Mode type = Mode::Open, const StringView& filename = "Untitled", const StringView& path = Core::StandardPaths::home_directory());
+    FilePicker(Window* parent_window, Mode type = Mode::Open, const StringView& filename = "Untitled", const StringView& path = Core::StandardPaths::home_directory(), ScreenPosition screen_position = Dialog::ScreenPosition::CenterWithinParent);
 
     static String ok_button_name(Mode mode)
     {