text: /*
   * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #include "PreviewWidget.h"
  #include <LibGUI/Application.h>
  #include <LibGUI/BoxLayout.h>
  #include <LibGUI/ColorInput.h>
  #include <LibGUI/ComboBox.h>
  #include <LibGUI/Icon.h>
  #include <LibGUI/Model.h>
  #include <LibGUI/Window.h>
  #include <unistd.h>
  
  class ColorRoleModel final : public GUI::Model {
  public:
      virtual int row_count(const GUI::ModelIndex&) const { return m_color_roles.size(); }
      virtual int column_count(const GUI::ModelIndex&) const { return 1; }
      virtual GUI::Variant data(const GUI::ModelIndex& index, GUI::ModelRole role = GUI::ModelRole::Display) const
      {
          if (role == GUI::ModelRole::Display)
              return Gfx::to_string(m_color_roles[(size_t)index.row()]);
          return {};
      }
      virtual void update() { did_update(); }
  
      explicit ColorRoleModel(const Vector<Gfx::ColorRole>& color_roles)
          : m_color_roles(color_roles)
      {
      }
  
      Gfx::ColorRole color_role(const GUI::ModelIndex& index) const
      {
          return m_color_roles[index.row()];
      }
  
      Gfx::ColorRole color_role(size_t index) const
      {
          return m_color_roles[index];
      }
  
  private:
      const Vector<Gfx::ColorRole>& m_color_roles;
  };
  
  int main(int argc, char** argv)
  {
  
      if (pledge("stdio recvfd sendfd thread rpath accept cpath wpath unix fattr", nullptr) < 0) {
          perror("pledge");
          return 1;
      }
  
      auto app = GUI::Application::construct(argc, argv);
  
      if (pledge("stdio recvfd sendfd thread rpath accept", nullptr) < 0) {
          perror("pledge");
          return 1;
      }
  
      if (unveil("/res", "r") < 0) {
          perror("unveil");
          return 1;
      }
  
      if (unveil(nullptr, nullptr) < 0) {
          perror("unveil");
          return 1;
      }
  
      auto app_icon = GUI::Icon::default_icon("app-theme-editor");
  
      Gfx::Palette preview_palette = app->palette();
  
      auto window = GUI::Window::construct();
      auto& main_widget = window->set_main_widget<GUI::Widget>();
      main_widget.set_fill_with_background_color(true);
      main_widget.set_layout<GUI::VerticalBoxLayout>();
  
      auto& preview_widget = main_widget.add<ThemeEditor::PreviewWidget>(app->palette());
      preview_widget.set_fixed_size(480, 360);
  
      auto& horizontal_container = main_widget.add<GUI::Widget>();
      horizontal_container.set_layout<GUI::HorizontalBoxLayout>();
      horizontal_container.set_fixed_size(480, 20);
  
      auto& combo_box = horizontal_container.add<GUI::ComboBox>();
      auto& color_input = horizontal_container.add<GUI::ColorInput>();
  
      Vector<Gfx::ColorRole> color_roles;
  #define __ENUMERATE_COLOR_ROLE(role) color_roles.append(Gfx::ColorRole::role);
      ENUMERATE_COLOR_ROLES(__ENUMERATE_COLOR_ROLE)
  #undef __ENUMERATE_COLOR_ROLE
  
      combo_box.set_only_allow_values_from_model(true);
      combo_box.set_model(adopt_ref(*new ColorRoleModel(color_roles)));
      combo_box.on_change = [&](auto&, auto& index) {
          auto role = static_cast<const ColorRoleModel*>(index.model())->color_role(index);
          color_input.set_color(preview_palette.color(role));
      };
  
      combo_box.set_selected_index((size_t)Gfx::ColorRole::Window - 1);
  
      color_input.on_change = [&] {
          auto role = static_cast<const ColorRoleModel*>(combo_box.model())->color_role(combo_box.selected_index());
          preview_palette.set_color(role, color_input.color());
          preview_widget.set_preview_palette(preview_palette);
      };
  
      window->resize(480, 500);
      window->show();
      window->set_title("Theme Editor");
      window->set_icon(app_icon.bitmap_for_size(16));
      return app->exec();
  }
  