text: #ifdef HAVE_GTK_LAYER_SHELL
  #include <gtk-layer-shell.h>
  #endif
  
  #include <spdlog/spdlog.h>
  
  #include <type_traits>
  
  #include "bar.hpp"
  #include "client.hpp"
  #include "factory.hpp"
  #include "group.hpp"
  #include "wlr-layer-shell-unstable-v1-client-protocol.h"
  
  #ifdef HAVE_SWAY
  #include "modules/sway/bar.hpp"
  #endif
  
  namespace waybar {
  static constexpr const char* MIN_HEIGHT_MSG =
      "Requested height: {} is less than the minimum height: {} required by the modules";
  
  static constexpr const char* MIN_WIDTH_MSG =
      "Requested width: {} is less than the minimum width: {} required by the modules";
  
  static constexpr const char* BAR_SIZE_MSG = "Bar configured (width: {}, height: {}) for output: {}";
  
  static constexpr const char* SIZE_DEFINED =
      "{} size is defined in the config file so it will stay like that";
  
  const Bar::bar_mode_map Bar::PRESET_MODES = {  //
      {"default",
       {// Special mode to hold the global bar configuration
        .layer = bar_layer::BOTTOM,
        .exclusive = true,
        .passthrough = false,
        .visible = true}},
      {"dock",
       {// Modes supported by the sway config; see man sway-bar(5)
        .layer = bar_layer::BOTTOM,
        .exclusive = true,
        .passthrough = false,
        .visible = true}},
      {"hide",
       {//
        .layer = bar_layer::TOP,
        .exclusive = false,
        .passthrough = false,
        .visible = true}},
      {"invisible",
       {//
        .layer = bar_layer::BOTTOM,
        .exclusive = false,
        .passthrough = true,
        .visible = false}},
      {"overlay",
       {//
        .layer = bar_layer::TOP,
        .exclusive = false,
        .passthrough = true,
        .visible = true}}};
  
  const std::string_view Bar::MODE_DEFAULT = "default";
  const std::string_view Bar::MODE_INVISIBLE = "invisible";
  const std::string_view DEFAULT_BAR_ID = "bar-0";
  
  /* Deserializer for enum bar_layer */
  void from_json(const Json::Value& j, bar_layer& l) {
    if (j == "bottom") {
      l = bar_layer::BOTTOM;
    } else if (j == "top") {
      l = bar_layer::TOP;
    } else if (j == "overlay") {
      l = bar_layer::OVERLAY;
    }
  }
  
  /* Deserializer for struct bar_mode */
  void from_json(const Json::Value& j, bar_mode& m) {
    if (j.isObject()) {
      if (auto v = j["layer"]; v.isString()) {
        from_json(v, m.layer);
      }
      if (auto v = j["exclusive"]; v.isBool()) {
        m.exclusive = v.asBool();
      }
      if (auto v = j["passthrough"]; v.isBool()) {
        m.passthrough = v.asBool();
      }
      if (auto v = j["visible"]; v.isBool()) {
        m.visible = v.asBool();
      }
    }
  }
  
  /* Deserializer for JSON Object -> map<string compatible type, Value>
   * Assumes that all the values in the object are deserializable to the same type.
   */
  template <typename Key, typename Value,
            typename = std::enable_if_t<std::is_convertible<std::string_view, Key>::value>>
  void from_json(const Json::Value& j, std::map<Key, Value>& m) {
    if (j.isObject()) {
      for (auto it = j.begin(); it != j.end(); ++it) {
        from_json(*it, m[it.key().asString()]);
      }
    }
  }
  
  #ifdef HAVE_GTK_LAYER_SHELL
  struct GLSSurfaceImpl : public BarSurface, public sigc::trackable {
    GLSSurfaceImpl(Gtk::Window& window, struct waybar_output& output) : window_{window} {
      output_name_ = output.name;
      // this has to be executed before GtkWindow.realize
      gtk_layer_init_for_window(window_.gobj());
      gtk_layer_set_keyboard_interactivity(window.gobj(), FALSE);
      gtk_layer_set_monitor(window_.gobj(), output.monitor->gobj());
      gtk_layer_set_namespace(window_.gobj(), "waybar");
  
      window.signal_map_event().connect_notify(sigc::mem_fun(*this, &GLSSurfaceImpl::onMap));
      window.signal_configure_event().connect_notify(
          sigc::mem_fun(*this, &GLSSurfaceImpl::onConfigure));
    }
  
    void setExclusiveZone(bool enable) override {
      if (enable) {
        gtk_layer_auto_exclusive_zone_enable(window_.gobj());
      } else {
        gtk_layer_set_exclusive_zone(window_.gobj(), 0);
      }
    }
  
    void setMargins(const struct bar_margins& margins) override {
      gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_LEFT, margins.left);
      gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_RIGHT, margins.right);
      gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_TOP, margins.top);
      gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_BOTTOM, margins.bottom);
    }
  
    void setLayer(bar_layer value) override {
      auto layer = GTK_LAYER_SHELL_LAYER_BOTTOM;
      if (value == bar_layer::TOP) {
        layer = GTK_LAYER_SHELL_LAYER_TOP;
      } else if (value == bar_layer::OVERLAY) {
        layer = GTK_LAYER_SHELL_LAYER_OVERLAY;
      }
      gtk_layer_set_layer(window_.gobj(), layer);
    }
  
    void setPassThrough(bool enable) override {
      passthrough_ = enable;
      auto gdk_window = window_.get_window();
      if (gdk_window) {
        Cairo::RefPtr<Cairo::Region> region;
        if (enable) {
          region = Cairo::Region::create();
        }
        gdk_window->input_shape_combine_region(region, 0, 0);
      }
    }
  
    void setPosition(const std::string_view& position) override {
      auto unanchored = GTK_LAYER_SHELL_EDGE_BOTTOM;
      vertical_ = false;
      if (position == "bottom") {
        unanchored = GTK_LAYER_SHELL_EDGE_TOP;
      } else if (position == "left") {
        unanchored = GTK_LAYER_SHELL_EDGE_RIGHT;
        vertical_ = true;
      } else if (position == "right") {
        vertical_ = true;
        unanchored = GTK_LAYER_SHELL_EDGE_LEFT;
      }
      for (auto edge : {GTK_LAYER_SHELL_EDGE_LEFT,
                        GTK_LAYER_SHELL_EDGE_RIGHT,
                        GTK_LAYER_SHELL_EDGE_TOP,
                        GTK_LAYER_SHELL_EDGE_BOTTOM}) {
        gtk_layer_set_anchor(window_.gobj(), edge, unanchored != edge);
      }
    }
  
    void setSize(uint32_t width, uint32_t height) override {
      width_ = width;
      height_ = height;
      window_.set_size_request(width_, height_);
    };
  
   private:
    Gtk::Window& window_;
    std::string  output_name_;
    uint32_t     width_;
    uint32_t     height_;
    bool         passthrough_ = false;
    bool         vertical_ = false;
  
    void onMap(GdkEventAny* ev) { setPassThrough(passthrough_); }
  
    void onConfigure(GdkEventConfigure* ev) {
      /*
       * GTK wants new size for the window.
       * Actual resizing and management of the exclusve zone is handled within the gtk-layer-shell
       * code. This event handler only updates stored size of the window and prints some warnings.
       *
       * Note: forced resizing to a window smaller than required by GTK would not work with
       * gtk-layer-shell.
       */
      if (vertical_) {
        if (width_ > 1 && ev->width > static_cast<int>(width_)) {
          spdlog::warn(MIN_WIDTH_MSG, width_, ev->width);
        }
      } else {
        if (height_ > 1 && ev->height > static_cast<int>(height_)) {
          spdlog::warn(MIN_HEIGHT_MSG, height_, ev->height);
        }
      }
      width_ = ev->width;
      height_ = ev->height;
      spdlog::info(BAR_SIZE_MSG, width_, height_, output_name_);
    }
  };
  #endif
  
  struct RawSurfaceImpl : public BarSurface, public sigc::trackable {
    RawSurfaceImpl(Gtk::Window& window, struct waybar_output& output) : window_{window} {
      output_ = gdk_wayland_monitor_get_wl_output(output.monitor->gobj());
      output_name_ = output.name;
  
      window.signal_realize().connect_notify(sigc::mem_fun(*this, &RawSurfaceImpl::onRealize));
      window.signal_map_event().connect_notify(sigc::mem_fun(*this, &RawSurfaceImpl::onMap));
      window.signal_configure_event().connect_notify(
          sigc::mem_fun(*this, &RawSurfaceImpl::onConfigure));
  
      if (window.get_realized()) {
        onRealize();
      }
    }
  
    void setExclusiveZone(bool enable) override {
      exclusive_zone_ = enable;
      if (layer_surface_) {
        auto zone = 0;
        if (enable) {
          // exclusive zone already includes margin for anchored edge,
          // only opposite margin should be added
          if ((anchor_ & VERTICAL_ANCHOR) == VERTICAL_ANCHOR) {
            zone += width_;
            zone += (anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT) ? margins_.right : margins_.left;
          } else {
            zone += height_;
            zone += (anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP) ? margins_.bottom : margins_.top;
          }
        }
        spdlog::debug("Set exclusive zone {} for output {}", zone, output_name_);
        zwlr_layer_surface_v1_set_exclusive_zone(layer_surface_.get(), zone);
      }
    }
  
    void setLayer(bar_layer layer) override {
      layer_ = ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
      if (layer == bar_layer::TOP) {
        layer_ = ZWLR_LAYER_SHELL_V1_LAYER_TOP;
      } else if (layer == bar_layer::OVERLAY) {
        layer_ = ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY;
      }
      // updating already mapped window
      if (layer_surface_) {
        if (zwlr_layer_surface_v1_get_version(layer_surface_.get()) >=
            ZWLR_LAYER_SURFACE_V1_SET_LAYER_SINCE_VERSION) {
          zwlr_layer_surface_v1_set_layer(layer_surface_.get(), layer_);
        } else {
          spdlog::warn("Unable to change layer: layer-shell implementation is too old");
        }
      }
    }
  
    void setMargins(const struct bar_margins& margins) override {
      margins_ = margins;
      // updating already mapped window
      if (layer_surface_) {
        zwlr_layer_surface_v1_set_margin(
            layer_surface_.get(), margins_.top, margins_.right, margins_.bottom, margins_.left);
      }
    }
  
    void setPassThrough(bool enable) override {
      passthrough_ = enable;
      /* GTK overwrites any region changes applied directly to the wl_surface,
       * thus the same GTK region API as in the GLS impl has to be used. */
      auto gdk_window = window_.get_window();
      if (gdk_window) {
        Cairo::RefPtr<Cairo::Region> region;
        if (enable) {
          region = Cairo::Region::create();
        }
        gdk_window->input_shape_combine_region(region, 0, 0);
      }
    }
  
    void setPosition(const std::string_view& position) override {
      anchor_ = HORIZONTAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
      if (position == "bottom") {
        anchor_ = HORIZONTAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
      } else if (position == "left") {
        anchor_ = VERTICAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
      } else if (position == "right") {
        anchor_ = VERTICAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
      }
  
      // updating already mapped window
      if (layer_surface_) {
        zwlr_layer_surface_v1_set_anchor(layer_surface_.get(), anchor_);
      }
    }
  
    void setSize(uint32_t width, uint32_t height) override {
      configured_width_ = width_ = width;
      configured_height_ = height_ = height;
      // layer_shell.configure handler should update exclusive zone if size changes
      window_.set_size_request(width, height);
    };
  
    void commit() override {
      if (surface_) {
        wl_surface_commit(surface_);
      }
    }
  
   private:
    constexpr static uint8_t VERTICAL_ANCHOR =
        ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
    constexpr static uint8_t HORIZONTAL_ANCHOR =
        ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
  
    template <auto fn>
    using deleter_fn = std::integral_constant<decltype(fn), fn>;
    using layer_surface_ptr =
        std::unique_ptr<zwlr_layer_surface_v1, deleter_fn<zwlr_layer_surface_v1_destroy>>;
  
    Gtk::Window&       window_;
    std::string        output_name_;
    uint32_t           configured_width_ = 0;
    uint32_t           configured_height_ = 0;
    uint32_t           width_ = 0;
    uint32_t           height_ = 0;
    uint8_t            anchor_ = HORIZONTAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
    bool               exclusive_zone_ = true;
    bool               passthrough_ = false;
    struct bar_margins margins_;
  
    zwlr_layer_shell_v1_layer layer_ = ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
    struct wl_output*         output_ = nullptr;   // owned by GTK
    struct wl_surface*        surface_ = nullptr;  // owned by GTK
    layer_surface_ptr         layer_surface_;
  
    void onRealize() {
      auto gdk_window = window_.get_window()->gobj();
      gdk_wayland_window_set_use_custom_surface(gdk_window);
    }
  
    void onMap(GdkEventAny* ev) {
      static const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
          .configure = onSurfaceConfigure,
          .closed = onSurfaceClosed,
      };
      auto client = Client::inst();
      auto gdk_window = window_.get_window()->gobj();
      surface_ = gdk_wayland_window_get_wl_surface(gdk_window);
  
      layer_surface_.reset(zwlr_layer_shell_v1_get_layer_surface(
          client->layer_shell, surface_, output_, layer_, "waybar"));
  
      zwlr_layer_surface_v1_add_listener(layer_surface_.get(), &layer_surface_listener, this);
      zwlr_layer_surface_v1_set_keyboard_interactivity(layer_surface_.get(), false);
      zwlr_layer_surface_v1_set_anchor(layer_surface_.get(), anchor_);
      zwlr_layer_surface_v1_set_margin(
          layer_surface_.get(), margins_.top, margins_.right, margins_.bottom, margins_.left);
  
      setSurfaceSize(width_, height_);
      setExclusiveZone(exclusive_zone_);
      setPassThrough(passthrough_);
  
      commit();
      wl_display_roundtrip(client->wl_display);
    }
  
    void onConfigure(GdkEventConfigure* ev) {
      /*
       * GTK wants new size for the window.
       *
       * Prefer configured size if it's non-default.
       * If the size is not set and the window is smaller than requested by GTK, request resize from
       * layer surface.
       */
      auto tmp_height = height_;
      auto tmp_width = width_;
      if (ev->height > static_cast<int>(height_)) {
        // Default minimal value
        if (height_ > 1) {
          spdlog::warn(MIN_HEIGHT_MSG, height_, ev->height);
        }
        if (configured_height_ > 1) {
          spdlog::info(SIZE_DEFINED, "Height");
        } else {
          tmp_height = ev->height;
        }
      }
      if (ev->width > static_cast<int>(width_)) {
        // Default minimal value
        if (width_ > 1) {
          spdlog::warn(MIN_WIDTH_MSG, width_, ev->width);
        }
        if (configured_width_ > 1) {
          spdlog::info(SIZE_DEFINED, "Width");
        } else {
          tmp_width = ev->width;
        }
      }
      if (tmp_width != width_ || tmp_height != height_) {
        setSurfaceSize(tmp_width, tmp_height);
        commit();
      }
    }
  
    void setSurfaceSize(uint32_t width, uint32_t height) {
      /* If the client is anchored to two opposite edges, layer_surface.configure will return
       * size without margins for the axis.
       * layer_surface.set_size, however, expects size with margins for the anchored axis.
       * This is not specified by wlr-layer-shell and based on actual behavior of sway.
       *
       * If the size for unanchored axis is not set (0), change request to 1 to avoid automatic
       * assignment by the compositor.
       */
      if ((anchor_ & VERTICAL_ANCHOR) == VERTICAL_ANCHOR) {
        width = width > 0 ? width : 1;
        if (height > 1) {
          height += margins_.top + margins_.bottom;
        }
      } else {
        height = height > 0 ? height : 1;
        if (width > 1) {
          width += margins_.right + margins_.left;
        }
      }
      spdlog::debug("Set surface size {}x{} for output {}", width, height, output_name_);
      zwlr_layer_surface_v1_set_size(layer_surface_.get(), width, height);
    }
  
    static void onSurfaceConfigure(void* data, struct zwlr_layer_surface_v1* surface, uint32_t serial,
                                   uint32_t width, uint32_t height) {
      auto o = static_cast<RawSurfaceImpl*>(data);
      if (width != o->width_ || height != o->height_) {
        o->width_ = width;
        o->height_ = height;
        o->window_.set_size_request(o->width_, o->height_);
        o->window_.resize(o->width_, o->height_);
        o->setExclusiveZone(o->exclusive_zone_);
        spdlog::info(BAR_SIZE_MSG,
                     o->width_ == 1 ? "auto" : std::to_string(o->width_),
                     o->height_ == 1 ? "auto" : std::to_string(o->height_),
                     o->output_name_);
        o->commit();
      }
      zwlr_layer_surface_v1_ack_configure(surface, serial);
    }
  
    static void onSurfaceClosed(void* data, struct zwlr_layer_surface_v1* /* surface */) {
      auto o = static_cast<RawSurfaceImpl*>(data);
      o->layer_surface_.reset();
    }
  };
  
  };  // namespace waybar
  
  waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
      : output(w_output),
        config(w_config),
        window{Gtk::WindowType::WINDOW_TOPLEVEL},
        left_(Gtk::ORIENTATION_HORIZONTAL, 0),
        center_(Gtk::ORIENTATION_HORIZONTAL, 0),
        right_(Gtk::ORIENTATION_HORIZONTAL, 0),
        box_(Gtk::ORIENTATION_HORIZONTAL, 0) {
    window.set_title("waybar");
    window.set_name("waybar");
    window.set_decorated(false);
    window.get_style_context()->add_class(output->name);
    window.get_style_context()->add_class(config["name"].asString());
    window.get_style_context()->add_class(config["position"].asString());
  
    auto position = config["position"].asString();
  
    if (position == "right" || position == "left") {
      left_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
      center_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
      right_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
      box_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
      vertical = true;
    }
  
    left_.get_style_context()->add_class("modules-left");
    center_.get_style_context()->add_class("modules-center");
    right_.get_style_context()->add_class("modules-right");
  
    if (config["spacing"].isInt()) {
      int spacing = config["spacing"].asInt();
      left_.set_spacing(spacing);
      center_.set_spacing(spacing);
      right_.set_spacing(spacing);
    }
  
    uint32_t height = config["height"].isUInt() ? config["height"].asUInt() : 0;
    uint32_t width = config["width"].isUInt() ? config["width"].asUInt() : 0;
  
    struct bar_margins margins_;
  
    if (config["margin-top"].isInt() || config["margin-right"].isInt() ||
        config["margin-bottom"].isInt() || config["margin-left"].isInt()) {
      margins_ = {
          config["margin-top"].isInt() ? config["margin-top"].asInt() : 0,
          config["margin-right"].isInt() ? config["margin-right"].asInt() : 0,
          config["margin-bottom"].isInt() ? config["margin-bottom"].asInt() : 0,
          config["margin-left"].isInt() ? config["margin-left"].asInt() : 0,
      };
    } else if (config["margin"].isString()) {
      std::istringstream       iss(config["margin"].asString());
      std::vector<std::string> margins{std::istream_iterator<std::string>(iss), {}};
      try {
        if (margins.size() == 1) {
          auto gaps = std::stoi(margins[0], nullptr, 10);
          margins_ = {.top = gaps, .right = gaps, .bottom = gaps, .left = gaps};
        }
        if (margins.size() == 2) {
          auto vertical_margins = std::stoi(margins[0], nullptr, 10);
          auto horizontal_margins = std::stoi(margins[1], nullptr, 10);
          margins_ = {.top = vertical_margins,
                      .right = horizontal_margins,
                      .bottom = vertical_margins,
                      .left = horizontal_margins};
        }
        if (margins.size() == 3) {
          auto horizontal_margins = std::stoi(margins[1], nullptr, 10);
          margins_ = {.top = std::stoi(margins[0], nullptr, 10),
                      .right = horizontal_margins,
                      .bottom = std::stoi(margins[2], nullptr, 10),
                      .left = horizontal_margins};
        }
        if (margins.size() == 4) {
          margins_ = {.top = std::stoi(margins[0], nullptr, 10),
                      .right = std::stoi(margins[1], nullptr, 10),
                      .bottom = std::stoi(margins[2], nullptr, 10),
                      .left = std::stoi(margins[3], nullptr, 10)};
        }
      } catch (...) {
        spdlog::warn("Invalid margins: {}", config["margin"].asString());
      }
    } else if (config["margin"].isInt()) {
      auto gaps = config["margin"].asInt();
      margins_ = {.top = gaps, .right = gaps, .bottom = gaps, .left = gaps};
    }
  
  #ifdef HAVE_GTK_LAYER_SHELL
    bool use_gls = config["gtk-layer-shell"].isBool() ? config["gtk-layer-shell"].asBool() : true;
    if (use_gls) {
      surface_impl_ = std::make_unique<GLSSurfaceImpl>(window, *output);
    } else
  #endif
    {
      surface_impl_ = std::make_unique<RawSurfaceImpl>(window, *output);
    }
  
    surface_impl_->setMargins(margins_);
    surface_impl_->setPosition(position);
    surface_impl_->setSize(width, height);
  
    /* Read custom modes if available */
    if (auto modes = config.get("modes", {}); modes.isObject()) {
      from_json(modes, configured_modes);
    }
  
    /* Update "default" mode with the global bar options */
    from_json(config, configured_modes[MODE_DEFAULT]);
  
    if (auto mode = config.get("mode", {}); mode.isString()) {
      setMode(config["mode"].asString());
    } else {
      setMode(MODE_DEFAULT);
    }
  
    window.signal_map_event().connect_notify(sigc::mem_fun(*this, &Bar::onMap));
  
  #if HAVE_SWAY
    if (auto ipc = config["ipc"]; ipc.isBool() && ipc.asBool()) {
      bar_id = Client::inst()->bar_id;
      if (auto id = config["id"]; id.isString()) {
        bar_id = id.asString();
      }
      if (bar_id.empty()) {
        bar_id = DEFAULT_BAR_ID;
      }
      try {
        _ipc_client = std::make_unique<BarIpcClient>(*this);
      } catch (const std::exception& exc) {
        spdlog::warn("Failed to open bar ipc connection: {}", exc.what());
      }
    }
  #endif
  
    setupWidgets();
    window.show_all();
  
    if (spdlog::should_log(spdlog::level::debug)) {
      // Unfortunately, this function isn't in the C++ bindings, so we have to call the C version.
      char* gtk_tree = gtk_style_context_to_string(
          window.get_style_context()->gobj(),
          (GtkStyleContextPrintFlags)(GTK_STYLE_CONTEXT_PRINT_RECURSE |
                                      GTK_STYLE_CONTEXT_PRINT_SHOW_STYLE));
      spdlog::debug("GTK widget tree:\n{}", gtk_tree);
      g_free(gtk_tree);
    }
  }
  
  /* Need to define it here because of forward declared members */
  waybar::Bar::~Bar() = default;
  
  void waybar::Bar::setMode(const std::string_view& mode) {
    using namespace std::literals::string_literals;
  
    auto style = window.get_style_context();
    /* remove styles added by previous setMode calls */
    style->remove_class("mode-"s + last_mode_);
  
    auto it = configured_modes.find(mode);
    if (it != configured_modes.end()) {
      last_mode_ = mode;
      style->add_class("mode-"s + last_mode_);
      setMode(it->second);
    } else {
      spdlog::warn("Unknown mode \"{}\" requested", mode);
      last_mode_ = MODE_DEFAULT;
      style->add_class("mode-"s + last_mode_);
      setMode(configured_modes.at(MODE_DEFAULT));
    }
  }
  
  void waybar::Bar::setMode(const struct bar_mode& mode) {
    surface_impl_->setLayer(mode.layer);
    surface_impl_->setExclusiveZone(mode.exclusive);
    surface_impl_->setPassThrough(mode.passthrough);
  
    if (mode.visible) {
      window.get_style_context()->remove_class("hidden");
      window.set_opacity(1);
    } else {
      window.get_style_context()->add_class("hidden");
      window.set_opacity(0);
    }
    surface_impl_->commit();
  }
  
  void waybar::Bar::onMap(GdkEventAny*) {
    /*
     * Obtain a pointer to the custom layer surface for modules that require it (idle_inhibitor).
     */
    auto gdk_window = window.get_window()->gobj();
    surface = gdk_wayland_window_get_wl_surface(gdk_window);
  }
  
  void waybar::Bar::setVisible(bool value) {
    visible = value;
    if (auto mode = config.get("mode", {}); mode.isString()) {
      setMode(visible ? config["mode"].asString() : MODE_INVISIBLE);
    } else {
      setMode(visible ? MODE_DEFAULT : MODE_INVISIBLE);
    }
  }
  
  void waybar::Bar::toggle() { setVisible(!visible); }
  
  // Converting string to button code rn as to avoid doing it later
  void waybar::Bar::setupAltFormatKeyForModule(const std::string& module_name) {
    if (config.isMember(module_name)) {
      Json::Value& module = config[module_name];
      if (module.isMember("format-alt")) {
        if (module.isMember("format-alt-click")) {
          Json::Value& click = module["format-alt-click"];
          if (click.isString()) {
            if (click == "click-right") {
              module["format-alt-click"] = 3U;
            } else if (click == "click-middle") {
              module["format-alt-click"] = 2U;
            } else if (click == "click-backward") {
              module["format-alt-click"] = 8U;
            } else if (click == "click-forward") {
              module["format-alt-click"] = 9U;
            } else {
              module["format-alt-click"] = 1U;  // default click-left
            }
          } else {
            module["format-alt-click"] = 1U;
          }
        } else {
          module["format-alt-click"] = 1U;
        }
      }
    }
  }
  
  void waybar::Bar::setupAltFormatKeyForModuleList(const char* module_list_name) {
    if (config.isMember(module_list_name)) {
      Json::Value& modules = config[module_list_name];
      for (const Json::Value& module_name : modules) {
        if (module_name.isString()) {
          setupAltFormatKeyForModule(module_name.asString());
        }
      }
    }
  }
  
  void waybar::Bar::handleSignal(int signal) {
    for (auto& module : modules_all_) {
      auto* custom = dynamic_cast<waybar::modules::Custom*>(module.get());
      if (custom != nullptr) {
        custom->refresh(signal);
      }
    }
  }
  
  void waybar::Bar::getModules(const Factory& factory, const std::string& pos, Gtk::Box* group = nullptr) {
    auto module_list = group ? config[pos]["modules"] : config[pos];
    if (module_list.isArray()) {
      for (const auto& name : module_list) {
        try {
          auto ref = name.asString();
          AModule* module;
  
          if (ref.compare(0, 6, "group/") == 0 && ref.size() > 6) {
            auto group_module = new waybar::Group(ref, *this, config[ref]);
            getModules(factory, ref, &group_module->box);
            module = group_module;
          } else {
            module = factory.makeModule(ref);
          }
  
          std::shared_ptr<AModule> module_sp(module);
          modules_all_.emplace_back(module_sp);
          if (group) {
            group->pack_start(*module, false, false);
          } else {
            if (pos == "modules-left") {
              modules_left_.emplace_back(module_sp);
            }
            if (pos == "modules-center") {
              modules_center_.emplace_back(module_sp);
            }
            if (pos == "modules-right") {
              modules_right_.emplace_back(module_sp);
            }
          }
          module->dp.connect([module, name] {
            try {
              module->update();
            } catch (const std::exception& e) {
              spdlog::error("{}: {}", name.asString(), e.what());
            }
          });
        } catch (const std::exception& e) {
          spdlog::warn("module {}: {}", name.asString(), e.what());
        }
      }
    }
  }
  
  auto waybar::Bar::setupWidgets() -> void {
    window.add(box_);
    box_.pack_start(left_, false, false);
    if (config["fixed-center"].isBool() ? config["fixed-center"].asBool() : true) {
      box_.set_center_widget(center_);
    } else {
      box_.pack_start(center_, true, false);
    }
    box_.pack_end(right_, false, false);
  
    // Convert to button code for every module that is used.
    setupAltFormatKeyForModuleList("modules-left");
    setupAltFormatKeyForModuleList("modules-right");
    setupAltFormatKeyForModuleList("modules-center");
  
    Factory factory(*this, config);
    getModules(factory, "modules-left");
    getModules(factory, "modules-center");
    getModules(factory, "modules-right");
    for (auto const& module : modules_left_) {
      left_.pack_start(*module, false, false);
    }
    for (auto const& module : modules_center_) {
      center_.pack_start(*module, false, false);
    }
    std::reverse(modules_right_.begin(), modules_right_.end());
    for (auto const& module : modules_right_) {
      right_.pack_end(*module, false, false);
    }
  }
  