LibGUI: Use String::formatted() and String::number() more

Libraries/LibGUI/AboutDialog.cpp

@@ -43,7 +43,7 @@ AboutDialog::AboutDialog(const StringView& name, const Gfx::Bitmap* icon, Window
     , m_icon(icon)
 {
     resize(413, 205);
-    set_title(String::format("About %s", m_name.characters()));
+    set_title(String::formatted("About {}", m_name));
     set_resizable(false);
 
     if (parent_window)

Libraries/LibGUI/Calendar.cpp

@@ -246,9 +246,9 @@ void Calendar::update_tiles(unsigned int target_year, unsigned int target_month)
 const String Calendar::selected_calendar_text(bool long_names)
 {
     if (mode() == Month)
-        return String::format("%s %u", long_names ? long_month_names[m_selected_month - 1] : short_month_names[m_selected_month - 1], m_selected_year);
+        return String::formatted("{} {}", long_names ? long_month_names[m_selected_month - 1] : short_month_names[m_selected_month - 1], m_selected_year);
     else
-        return String::format("%u", m_selected_year);
+        return String::number(m_selected_year);
 }
 
 void Calendar::set_selected_calendar(unsigned int year, unsigned int month)
@@ -285,7 +285,7 @@ void Calendar::CalendarTile::update_values(int index, Core::DateTime date_time)
 {
     m_index = index;
     m_date_time = date_time;
-    m_display_date = (m_date_time.day() == 1) ? String::format("%s %u", short_month_names[m_date_time.month() - 1], m_date_time.day()) : String::number(m_date_time.day());
+    m_display_date = (m_date_time.day() == 1) ? String::formatted("{} {}", short_month_names[m_date_time.month() - 1], m_date_time.day()) : String::number(m_date_time.day());
 }
 
 Calendar::CalendarTile::~CalendarTile()

Libraries/LibGUI/FilePicker.cpp

@@ -65,7 +65,7 @@ Optional<String> FilePicker::get_open_filepath(Window* parent_window, const Stri
 
 Optional<String> FilePicker::get_save_filepath(Window* parent_window, const String& title, const String& extension, Options options)
 {
-    auto picker = FilePicker::construct(parent_window, Mode::Save, options, String::format("%s.%s", title.characters(), extension.characters()));
+    auto picker = FilePicker::construct(parent_window, Mode::Save, options, String::formatted("{}.{}", title, extension));
 
     if (picker->exec() == Dialog::ExecOK) {
         String file_path = picker->selected_file().string();
@@ -136,7 +136,7 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, Options options, const
     };
 
     auto open_parent_directory_action = Action::create("Open parent directory", { Mod_Alt, Key_Up }, Gfx::Bitmap::load_from_file("/res/icons/16x16/open-parent-directory.png"), [this](const Action&) {
-        set_path(String::format("%s/..", m_model->root_path().characters()));
+        set_path(String::formatted("{}/..", m_model->root_path()));
     });
     toolbar.add_action(*open_parent_directory_action);
 
@@ -149,13 +149,10 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, Options options, const
     auto mkdir_action = Action::create("New directory...", Gfx::Bitmap::load_from_file("/res/icons/16x16/mkdir.png"), [this](const Action&) {
         String value;
         if (InputBox::show(value, this, "Enter name:", "New directory") == InputBox::ExecOK && !value.is_empty()) {
-            auto new_dir_path = LexicalPath(String::format("%s/%s",
-                                                m_model->root_path().characters(),
-                                                value.characters()))
-                                    .string();
+            auto new_dir_path = LexicalPath::canonicalized_path(String::formatted("{}/{}", m_model->root_path(), value));
             int rc = mkdir(new_dir_path.characters(), 0777);
             if (rc < 0) {
-                MessageBox::show(this, String::format("mkdir(\"%s\") failed: %s", new_dir_path.characters(), strerror(errno)), "Error", MessageBox::Type::Error);
+                MessageBox::show(this, String::formatted("mkdir(\"{}\") failed: {}", new_dir_path, strerror(errno)), "Error", MessageBox::Type::Error);
             } else {
                 m_model->update();
             }
@@ -301,7 +298,7 @@ void FilePicker::clear_preview()
 
 void FilePicker::on_file_return()
 {
-    LexicalPath path(String::format("%s/%s", m_model->root_path().characters(), m_filename_textbox->text().characters()));
+    LexicalPath path(String::formatted("{}/{}", m_model->root_path(), m_filename_textbox->text()));
 
     if (FilePicker::file_exists(path.string()) && m_mode == Mode::Save) {
         auto result = MessageBox::show(this, "File already exists, overwrite?", "Existing File", MessageBox::Type::Warning, MessageBox::InputType::OKCancel);

Libraries/LibGUI/FileSystemModel.cpp

@@ -123,7 +123,7 @@ void FileSystemModel::Node::traverse_if_needed()
     quick_sort(child_names);
 
     for (auto& name : child_names) {
-        String child_path = String::format("%s/%s", full_path.characters(), name.characters());
+        String child_path = String::formatted("{}/{}", full_path, name);
         auto child = adopt_own(*new Node(m_model));
         bool ok = child->fetch_data(child_path, false);
         if (!ok)

Libraries/LibGUI/HeaderView.cpp

@@ -274,7 +274,7 @@ void HeaderView::paint_vertical(Painter& painter)
         bool pressed = section == m_pressed_section && m_pressed_section_is_pressed;
         bool hovered = false;
         Gfx::StylePainter::paint_button(painter, cell_rect, palette(), Gfx::ButtonStyle::Normal, pressed, hovered);
-        String text = String::format("%d", section);
+        String text = String::number(section);
         auto text_rect = cell_rect.shrunken(m_table_view.horizontal_padding() * 2, 0);
         if (pressed)
             text_rect.move_by(1, 1);

Libraries/LibGUI/Icon.cpp

@@ -94,8 +94,8 @@ void IconImpl::set_bitmap_for_size(int size, RefPtr<Gfx::Bitmap>&& bitmap)
 
 Icon Icon::default_icon(const StringView& name)
 {
-    auto bitmap16 = Gfx::Bitmap::load_from_file(String::format("/res/icons/16x16/%s.png", name.to_string().characters()));
-    auto bitmap32 = Gfx::Bitmap::load_from_file(String::format("/res/icons/32x32/%s.png", name.to_string().characters()));
+    auto bitmap16 = Gfx::Bitmap::load_from_file(String::formatted("/res/icons/16x16/{}.png", name));
+    auto bitmap32 = Gfx::Bitmap::load_from_file(String::formatted("/res/icons/32x32/{}.png", name));
     return Icon(move(bitmap16), move(bitmap32));
 }
 

Libraries/LibGUI/ModelIndex.cpp

@@ -42,8 +42,8 @@ Variant ModelIndex::data(ModelRole role) const
 const LogStream& operator<<(const LogStream& stream, const ModelIndex& value)
 {
     if (value.internal_data())
-        return stream << String::format("ModelIndex(%d,%d,%p)", value.row(), value.column(), value.internal_data());
-    return stream << String::format("ModelIndex(%d,%d)", value.row(), value.column());
+        return stream << String::formatted("ModelIndex({},{},{:p})", value.row(), value.column(), value.internal_data());
+    return stream << String::formatted("ModelIndex({},{})", value.row(), value.column());
 }
 
 }

Libraries/LibGUI/TextPosition.h

@@ -61,7 +61,7 @@ inline const LogStream& operator<<(const LogStream& stream, const TextPosition&
 {
     if (!value.is_valid())
         return stream << "GUI::TextPosition(Invalid)";
-    return stream << String::format("(%zu,%zu)", value.line(), value.column());
+    return stream << String::formatted("({},{})", value.line(), value.column());
 }
 
 }

Libraries/LibGUI/Variant.cpp

@@ -435,7 +435,7 @@ String Variant::to_string() const
     case Type::Rect:
         return as_rect().to_string();
     case Type::Font:
-        return String::format("[Font: %s]", as_font().name().characters());
+        return String::formatted("[Font: {}]", as_font().name());
     case Type::TextAlignment: {
         switch (m_value.as_text_alignment) {
         case Gfx::TextAlignment::Center: