feat: extend bluetooth module

include/factory.hpp

@@ -56,15 +56,11 @@
 #endif
 #ifdef HAVE_GIO_UNIX
 #include "modules/inhibitor.hpp"
+#include "modules/bluetooth.hpp"
 #endif
 #include "bar.hpp"
 #include "modules/custom.hpp"
 #include "modules/temperature.hpp"
-#if defined(__linux__)
-#ifdef WANT_RFKILL
-#include "modules/bluetooth.hpp"
-#endif
-#endif
 
 namespace waybar {
 

include/modules/bluetooth.hpp

@@ -1,18 +1,77 @@
 #pragma once
 
 #include "ALabel.hpp"
+#ifdef WANT_RFKILL
 #include "util/rfkill.hpp"
+#endif
+#include <gio/gio.h>
+#include <vector>
+#include <string>
+#include <optional>
 
 namespace waybar::modules {
 
 class Bluetooth : public ALabel {
+  struct AdapterInfo
+  {
+    std::string path;
+    std::string address;
+    std::string address_type;
+    // std::string name; // just use alias instead
+    std::string alias;
+    bool powered;
+    bool discoverable;
+    bool pairable;
+    bool discovering;
+  };
+
+  // NOTE: there are some properties that not all devices provide
+  struct DeviceInfo
+  {
+    std::string path;
+    std::string paired_adapter;
+    std::string address;
+    std::string address_type;
+    // std::optional<std::string> name; // just use alias instead
+    std::string alias;
+    std::optional<std::string> icon;
+    bool paired;
+    bool trusted;
+    bool blocked;
+    bool connected;
+    bool services_resolved;
+    // TODO: make experimental in waybar as it is also a experimental feature in bluez
+    std::optional<unsigned char> battery_percentage;
+  };
+
  public:
   Bluetooth(const std::string&, const Json::Value&);
   ~Bluetooth() = default;
   auto update() -> void;
 
  private:
+  static auto onInterfaceAddedOrRemoved(GDBusObjectManager*, GDBusObject*, GDBusInterface*, gpointer) -> void;
+  static auto onInterfaceProxyPropertiesChanged(GDBusObjectManagerClient*, GDBusObjectProxy*, GDBusProxy*, GVariant*, const gchar* const*, gpointer) -> void;
+
+  auto getDeviceBatteryPercentage(GDBusObject*) -> std::optional<unsigned char>;
+  auto getDeviceProperties(GDBusObject*, DeviceInfo&) -> bool;
+  auto getAdapterProperties(GDBusObject*, AdapterInfo&) -> bool;
+
+  auto findCurAdapter(AdapterInfo&) -> bool;
+  auto findConnectedDevices(const std::string&, std::vector<DeviceInfo>&) -> void;
+
+
+#ifdef WANT_RFKILL
   util::Rfkill rfkill_;
+#endif
+  const std::unique_ptr<GDBusObjectManager, void (*)(GDBusObjectManager*)> manager_;
+
+  std::string state_;
+  AdapterInfo cur_adapter_;
+  std::vector<DeviceInfo> connected_devices_;
+  DeviceInfo cur_focussed_device_;
+
+  std::vector<std::string> device_preference_;
 };
 
 }  // namespace waybar::modules

man/waybar-bluetooth.5.scd

@@ -6,21 +6,44 @@ waybar - bluetooth module
 
 # DESCRIPTION
 
-The *bluetooth* module displays information about the status of the device's bluetooth device.
+The *bluetooth* module displays information about the bluetooth adapter and its connections.
 
 # CONFIGURATION
 
 Addressed by *bluetooth*
 
+*adapter-alias*: ++
+	typeof: string ++
+	Use the adapter with the defined alias (name). Otherwise select a random adapter to display. Recommended to define when there is more than 1 adapter available to the system (use ```bluetoothctl show``` to show all available adapters).
+
+*format-device-preference*: ++
+	typeof: array ++
+	A ranking of bluetooth devices, addressed by their alias (name). The order is *first displayed* to *last displayed*. If this config option is not defined or none of the devices in the list are connected, it will fall back to showing the last connected device. A devices alias can be manually changed using the ```bluetoothctl set-alias``` command.
+
 *format*: ++
 	typeof: string  ++
-	default: *{icon}* ++
+	default: * {status}* ++
 	The format, how information should be displayed. This format is used when other formats aren't specified.
 
-*format-icons*: ++
+*format-disabled*: ++
-	typeof: array/object ++
+	typeof: string ++
-	Based on the device status, the corresponding icon gets selected. ++
+	This format is used when the displayed adapter is disabled.
-	The order is *low* to *high*. Or by the state if it is an object.
+
+*format-off*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is turned off.
+
+*format-on*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is turned on with no devices connected.
+
+*format-connected*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is connected to at least 1 device.
+
+*format-connected-battery*: ++
+	typeof: string ++
+	This format is used when the selected connected device, defined by the config option *format-device-preference*, provides is battery percentage. This needs the experimental features of bluez to be enabled to work.
 
 *rotate*: ++
 	typeof: integer ++
@@ -71,23 +94,65 @@ Addressed by *bluetooth*
 	typeof: string ++
 	The format, how information should be displayed in the tooltip. This format is used when other formats aren't specified.
 
+*tooltip-format-disabled*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is disabled.
+
+*tooltip-format-off*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is turned off.
+
+*tooltip-format-on*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is turned on with no devices connected.
+
+*tooltip-format-connected*: ++
+	typeof: string ++
+	This format is used when the displayed adapter is connected to at least 1 device.
+
+*tooltip-format-connected-battery*: ++
+	typeof: string ++
+	This format is used when the selected connected device, defined by the config option *format-device-preference*, provides is battery percentage. This needs the experimental features of bluez to be enabled to work.
+
 # FORMAT REPLACEMENTS
 
 *{status}*: Status of the bluetooth device.
 
-*{icon}*: Icon, as defined in *format-icons*.
+*{num_connections}*: Number of connections the selected adapter has.
+
+*{adapter_address}*: Address of the selected adapter.
+
+*{adapter_address_type}*: Address type of the selected adapter.
+
+*{adapter_alias}*: Alias of the selected adapter. By default equal to the *adapter_name* but can be changed by the user when there are conflicts.
+
+*{device_address}*: Address of the current selected selected connected device.
+
+*{device_address_type}*: Address type of the current selected selected connected device.
+
+*{device_alias}*: Alias of the current selected connected device. By default equal to the *device_name* but can be changed by the user when there are conflicts.
+
+*{device_battery_percentage}*: Battery percentage of the current selected device if available. Only use in the *format-connected-battery* and *tooltip-format-connected-battery*.
 
 # EXAMPLES
 
 ```
 "bluetooth": {
-	"format": "{icon}",
+	"format": " {status}",
-	"format-alt": "bluetooth: {status}",
+        "format-connected": " {device_alias}",
-	"format-icons": {
+        "format-connected-battery": " {device_battery_percentage}%",
-		"enabled": "",
+	"tooltip-format": "{adapter_alias} {adapter_address}"
-		"disabled": ""
+}
-	},
+```
-	"tooltip-format": "{}"
+
+```
+"bluetooth": {
+	// "adapter-alias": "adapter1", // specify the adapter alias (name) if there are more than 1 on the system
+	"format": " {status}",
+        "format-connected": " {num_connections} connected",
+	// TODO: make it so that it shows all connected devices in the tooltip
+        // "tooltip-format-connected": "{device_alias}",
+        // "tooltip-format-connected-battery": "{device_alias} {device_battery_percentage}%",
 }
 ```
 
@@ -95,3 +160,9 @@ Addressed by *bluetooth*
 
 - *#bluetooth*
 - *#bluetooth.disabled*
+- *#bluetooth.off*
+- *#bluetooth.on*
+- *#bluetooth.connected*
+- *#bluetooth.discoverable*
+- *#bluetooth.discovering*
+- *#bluetooth.pairable*

meson.build

@@ -253,16 +253,14 @@ endif
 if (giounix.found() and not get_option('logind').disabled())
     add_project_arguments('-DHAVE_GIO_UNIX', language: 'cpp')
     src_files += 'src/modules/inhibitor.cpp'
+    src_files += 'src/modules/bluetooth.cpp'
 endif
 
-if get_option('rfkill').enabled()
+if get_option('rfkill').enabled() and is_linux
-    if is_linux
+    add_project_arguments('-DWANT_RFKILL', language: 'cpp')
-        add_project_arguments('-DWANT_RFKILL', language: 'cpp')
+    src_files += files(
-        src_files += files(
+        'src/util/rfkill.cpp'
-            'src/modules/bluetooth.cpp',
+    )
-            'src/util/rfkill.cpp'
-        )
-    endif
 endif
 
 if tz_dep.found()

src/factory.cpp

@@ -104,17 +104,13 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
     if (ref == "inhibitor") {
       return new waybar::modules::Inhibitor(id, bar_, config_[name]);
     }
-#endif
-    if (ref == "temperature") {
-      return new waybar::modules::Temperature(id, config_[name]);
-    }
-#if defined(__linux__)
-#ifdef WANT_RFKILL
     if (ref == "bluetooth") {
       return new waybar::modules::Bluetooth(id, config_[name]);
     }
 #endif
-#endif
+    if (ref == "temperature") {
+      return new waybar::modules::Temperature(id, config_[name]);
+    }
     if (ref.compare(0, 7, "custom/") == 0 && ref.size() > 7) {
       return new waybar::modules::Custom(ref.substr(7), id, config_[name]);
     }

src/modules/bluetooth.cpp

@@ -1,30 +1,358 @@
 #include "modules/bluetooth.hpp"
 
+#include <algorithm>
+#include <spdlog/spdlog.h>
 #include <fmt/format.h>
 
+namespace {
+
+using GDBusManager = std::unique_ptr<GDBusObjectManager, void (*)(GDBusObjectManager*)>;
+
+auto generateManager() -> GDBusManager {
+  GError* error = nullptr;
+  GDBusObjectManager* manager = g_dbus_object_manager_client_new_for_bus_sync(
+    G_BUS_TYPE_SYSTEM,
+    GDBusObjectManagerClientFlags::G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_DO_NOT_AUTO_START,
+    "org.bluez",
+    "/",
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    &error
+  );
+
+  if (error) {
+    spdlog::error("g_dbus_object_manager_client_new_for_bus_sync() failed: {}", error->message);
+    g_error_free(error);
+  }
+
+  auto destructor = [](GDBusObjectManager* manager) {
+    if (manager) {
+      g_object_unref(manager);
+    }
+  };
+
+  return GDBusManager{manager, destructor};
+}
+
+auto getBoolProperty(GDBusProxy* proxy, const char* property_name) -> bool {
+  auto gvar = g_dbus_proxy_get_cached_property(proxy, property_name);
+  if (gvar) {
+    bool property_value = g_variant_get_boolean(gvar);
+    g_variant_unref(gvar);
+    return property_value;
+  }
+
+  spdlog::error("getBoolProperty() failed: doesn't have property {}", property_name);
+  return false;
+}
+
+auto getOptionalStringProperty(GDBusProxy* proxy, const char* property_name) -> std::optional<std::string> {
+  auto gvar = g_dbus_proxy_get_cached_property(proxy, property_name);
+  if (gvar) {
+    std::string property_value = g_variant_get_string(gvar, NULL);
+    g_variant_unref(gvar);
+    return property_value;
+  }
+
+  return std::nullopt;
+}
+
+auto getStringProperty(GDBusProxy* proxy, const char* property_name) -> std::string {
+  auto property_value = getOptionalStringProperty(proxy, property_name);
+  if (!property_value.has_value()) {
+    spdlog::error("getStringProperty() failed: doesn't have property {}", property_name);
+  }
+  return property_value.value_or("");
+}
+
+auto getUcharProperty(GDBusProxy* proxy, const char* property_name) -> unsigned char {
+  auto gvar = g_dbus_proxy_get_cached_property(proxy, property_name);
+  if (gvar) {
+    unsigned char property_value;
+    g_variant_get(gvar, "y", &property_value);
+    g_variant_unref(gvar);
+
+    return property_value;
+  }
+
+  spdlog::error("getUcharProperty() failed: doesn't have property {}", property_name);
+  return 0;
+}
+
+}  // namespace
+
 waybar::modules::Bluetooth::Bluetooth(const std::string& id, const Json::Value& config)
-    : ALabel(config, "bluetooth", id, "{icon}", 10), rfkill_{RFKILL_TYPE_BLUETOOTH} {
+    : ALabel(config, "bluetooth", id, " {status}", 10),
+#ifdef WANT_RFKILL
+      rfkill_{RFKILL_TYPE_BLUETOOTH},
+#endif
+      manager_(generateManager()) {
+
+  if (config_["format-device-preference"].isArray()) {
+    std::transform(config_["format-device-preference"].begin(),
+                   config_["format-device-preference"].end(),
+                   std::back_inserter(device_preference_),
+                   [](auto x){ return x.asString(); });
+  }
+
+  // NOTE: assumption made that the adapter that is selcected stays unchanged
+  // for duration of the module
+  if (!findCurAdapter(cur_adapter_)) {
+    if (config_["adapter-alias"].isString()) {
+      spdlog::error("find_cur_adapter() failed: no bluetooth adapter found with alias '{}'", config_["adapter-alias"].asString());
+    } else {
+      spdlog::error("find_cur_adapter() failed: no bluetooth adapter found");
+    }
+    return;
+  }
+  findConnectedDevices(cur_adapter_.path, connected_devices_);
+
+  g_signal_connect(manager_.get(), "interface-proxy-properties-changed", G_CALLBACK(onInterfaceProxyPropertiesChanged), this);
+  g_signal_connect(manager_.get(), "interface-added", G_CALLBACK(onInterfaceAddedOrRemoved), this);
+  g_signal_connect(manager_.get(), "interface-removed", G_CALLBACK(onInterfaceAddedOrRemoved), this);
+#ifdef WANT_RFKILL
   rfkill_.on_update.connect(sigc::hide(sigc::mem_fun(*this, &Bluetooth::update)));
+#endif
+
+  dp.emit();
 }
 
 auto waybar::modules::Bluetooth::update() -> void {
-  std::string status = rfkill_.getState() ? "disabled" : "enabled";
+  // focussed device is either:
-
+  // - the first device in the device_preference_ list that is connected to the
-  label_.set_markup(
+  //   current adapter (if none fallback to last connected device)
-      fmt::format(format_, fmt::arg("status", status), fmt::arg("icon", getIcon(0, status))));
+  // - it is the last device that connected to the current adapter
-  if (status == "disabled") {
+  if (!connected_devices_.empty()) {
-    label_.get_style_context()->add_class("disabled");
+    bool preferred_device_connected = false;
-  } else {
+    if (!device_preference_.empty()) {
-    label_.get_style_context()->remove_class("disabled");
+      for (const std::string& device_alias : device_preference_) {
+        auto it = std::find_if(connected_devices_.begin(), connected_devices_.end(), [device_alias](auto device){ return device_alias == device.alias; });
+        if (it != connected_devices_.end()) {
+          preferred_device_connected = true;
+          cur_focussed_device_ = *it;
+          break;
+        }
+      }
+    }
+    if (!preferred_device_connected) {
+      cur_focussed_device_ = connected_devices_.back();
+    }
   }
 
-  if (tooltipEnabled()) {
+  std::string state;
-    if (config_["tooltip-format"].isString()) {
+  std::string tooltip_format;
-      auto tooltip_format = config_["tooltip-format"].asString();
+  if (!cur_adapter_.powered)
-      auto tooltip_text = fmt::format(tooltip_format, status, fmt::arg("status", status));
+    state = "off";
-      label_.set_tooltip_text(tooltip_text);
+  else if (!connected_devices_.empty())
+    state = "connected";
+  else
+    state = "on";
+#ifdef WANT_RFKILL
+  if (rfkill_.getState())
+    state = "disabled";
+#endif
+
+  if (!alt_) {
+    if (state == "connected" && cur_focussed_device_.battery_percentage.has_value() && config_["format-connected-battery"].isString()) {
+      format_ = config_["format-connected-battery"].asString();
+    } else if (config_["format-" + state].isString()) {
+      format_ = config_["format-" + state].asString();
+    } else if (config_["format"].isString()) {
+      format_ = config_["format"].asString();
     } else {
-      label_.set_tooltip_text(status);
+      format_ = default_format_;
+    }
+  }
+  if (config_["tooltip-format-" + state].isString()) {
+    tooltip_format = config_["tooltip-format-" + state].asString();
+  } else if (config_["tooltip-format"].isString()) {
+    tooltip_format = config_["tooltip-format"].asString();
+  }
+
+  auto update_style_context = [this](const std::string& style_class, bool in_next_state) {
+    if (in_next_state && !label_.get_style_context()->has_class(style_class)) {
+      label_.get_style_context()->add_class(style_class);
+    } else if (!in_next_state && label_.get_style_context()->has_class(style_class)) {
+      label_.get_style_context()->remove_class(style_class);
+    }
+  };
+  update_style_context("discoverable", cur_adapter_.discoverable);
+  update_style_context("discovering", cur_adapter_.discovering);
+  update_style_context("pairable", cur_adapter_.pairable);
+  if (!state_.empty()) {
+    update_style_context(state_, false);
+  }
+  update_style_context(state, true);
+  state_ = state;
+
+  label_.set_markup(fmt::format(format_,
+        fmt::arg("status", state_),
+        fmt::arg("num_connections", connected_devices_.size()),
+        fmt::arg("adapter_address", cur_adapter_.address),
+        fmt::arg("adapter_address_type", cur_adapter_.address_type),
+        fmt::arg("adapter_alias", cur_adapter_.alias),
+        fmt::arg("device_address", cur_focussed_device_.address),
+        fmt::arg("device_address_type", cur_focussed_device_.address_type),
+        fmt::arg("device_alias", cur_focussed_device_.alias),
+        fmt::arg("device_battery_percentage", cur_focussed_device_.battery_percentage.value_or(0))
+        ));
+
+  // TODO: make possible to show information about all connected devices in the tooltip
+  if (tooltipEnabled()) {
+    label_.set_tooltip_text(fmt::format(tooltip_format,
+          fmt::arg("status", state_),
+          fmt::arg("num_connections", connected_devices_.size()),
+          fmt::arg("adapter_address", cur_adapter_.address),
+          fmt::arg("adapter_address_type", cur_adapter_.address_type),
+          fmt::arg("adapter_alias", cur_adapter_.alias),
+          fmt::arg("device_address", cur_focussed_device_.address),
+          fmt::arg("device_address_type", cur_focussed_device_.address_type),
+          fmt::arg("device_alias", cur_focussed_device_.alias),
+          fmt::arg("device_battery_percentage", cur_focussed_device_.battery_percentage.value_or(0))
+          ));
+  }
+
+  // Call parent update
+  ALabel::update();
+}
+
+// NOTE: only for when the org.bluez.Battery1 interface is added/removed after/before a device is connected/disconnected
+auto waybar::modules::Bluetooth::onInterfaceAddedOrRemoved(GDBusObjectManager *manager, GDBusObject *object,
+    GDBusInterface *interface,
+    gpointer user_data) -> void
+{
+  std::string interface_name = g_dbus_proxy_get_interface_name(G_DBUS_PROXY(interface));
+  std::string object_path = g_dbus_proxy_get_object_path(G_DBUS_PROXY(interface));
+  if (interface_name == "org.bluez.Battery1") {
+    Bluetooth* bt = static_cast<Bluetooth*>(user_data);
+    auto device = std::find_if(bt->connected_devices_.begin(), bt->connected_devices_.end(), [object_path](auto d){ return d.path == object_path; });
+    if (device != bt->connected_devices_.end()) {
+      device->battery_percentage = bt->getDeviceBatteryPercentage(object);
+      bt->dp.emit();
     }
   }
 }
+
+auto waybar::modules::Bluetooth::onInterfaceProxyPropertiesChanged(GDBusObjectManagerClient *manager,
+    GDBusObjectProxy *object_proxy,
+    GDBusProxy *interface_proxy,
+    GVariant *changed_properties,
+    const gchar *const *invalidated_properties,
+    gpointer user_data) -> void
+{
+  std::string interface_name = g_dbus_proxy_get_interface_name(interface_proxy);
+  std::string object_path = g_dbus_object_get_object_path(G_DBUS_OBJECT(object_proxy));
+
+  Bluetooth* bt = static_cast<Bluetooth*>(user_data);
+  if (interface_name == "org.bluez.Adapter1") {
+    if (object_path == bt->cur_adapter_.path) {
+      bt->getAdapterProperties(G_DBUS_OBJECT(object_proxy), bt->cur_adapter_);
+      bt->dp.emit();
+    }
+  } else if (interface_name == "org.bluez.Device1" ||
+             interface_name == "org.bluez.Battery1") {
+    DeviceInfo device;
+    bt->getDeviceProperties(G_DBUS_OBJECT(object_proxy), device);
+    auto cur_device = std::find_if(bt->connected_devices_.begin(), bt->connected_devices_.end(), [device](auto d){ return d.path == device.path; });
+    if (cur_device == bt->connected_devices_.end()) {
+      if (device.connected) {
+        bt->connected_devices_.push_back(device);
+        bt->dp.emit();
+      }
+    } else {
+      if (!device.connected) {
+        bt->connected_devices_.erase(cur_device);
+      } else {
+        *cur_device = device;
+      }
+      bt->dp.emit();
+    }
+  }
+}
+
+auto waybar::modules::Bluetooth::getDeviceBatteryPercentage(GDBusObject* object) -> std::optional<unsigned char> {
+  GDBusProxy* proxy_device_bat = G_DBUS_PROXY(g_dbus_object_get_interface(object, "org.bluez.Battery1"));
+  if (proxy_device_bat != NULL) {
+    unsigned char battery_percentage = getUcharProperty(proxy_device_bat, "Percentage");
+    g_object_unref(proxy_device_bat);
+
+    return battery_percentage;
+  }
+  return std::nullopt;
+}
+
+auto waybar::modules::Bluetooth::getDeviceProperties(GDBusObject* object, DeviceInfo& device_info) -> bool {
+  GDBusProxy* proxy_device = G_DBUS_PROXY(g_dbus_object_get_interface(object, "org.bluez.Device1"));
+
+  if (proxy_device != NULL) {
+    device_info.path = g_dbus_object_get_object_path(object);
+    device_info.paired_adapter = getStringProperty(proxy_device, "Adapter");
+    device_info.address = getStringProperty(proxy_device, "Address");
+    device_info.address_type = getStringProperty(proxy_device, "AddressType");
+    device_info.alias = getStringProperty(proxy_device, "Alias");
+    device_info.icon = getOptionalStringProperty(proxy_device, "Icon");
+    device_info.paired = getBoolProperty(proxy_device, "Paired");
+    device_info.trusted = getBoolProperty(proxy_device, "Trusted");
+    device_info.blocked = getBoolProperty(proxy_device, "Blocked");
+    device_info.connected = getBoolProperty(proxy_device, "Connected");
+    device_info.services_resolved = getBoolProperty(proxy_device, "ServicesResolved");
+
+    g_object_unref(proxy_device);
+
+    device_info.battery_percentage = getDeviceBatteryPercentage(object);
+
+    return true;
+  }
+  return false;
+}
+
+auto waybar::modules::Bluetooth::getAdapterProperties(GDBusObject* object, AdapterInfo& adapter_info) -> bool {
+  GDBusProxy* proxy_adapter = G_DBUS_PROXY(g_dbus_object_get_interface(object, "org.bluez.Adapter1"));
+
+  if (proxy_adapter != NULL) {
+    adapter_info.path = g_dbus_object_get_object_path(object);
+    adapter_info.address = getStringProperty(proxy_adapter, "Address");
+    adapter_info.address_type = getStringProperty(proxy_adapter, "AddressType");
+    adapter_info.alias = getStringProperty(proxy_adapter, "Alias");
+    adapter_info.powered = getBoolProperty(proxy_adapter, "Powered");
+    adapter_info.discoverable = getBoolProperty(proxy_adapter, "Discoverable");
+    adapter_info.pairable = getBoolProperty(proxy_adapter, "Pairable");
+    adapter_info.discovering = getBoolProperty(proxy_adapter, "Discovering");
+
+    g_object_unref(proxy_adapter);
+
+    return true;
+  }
+  return false;
+}
+
+auto waybar::modules::Bluetooth::findCurAdapter(AdapterInfo& adapter_info) -> bool {
+  bool found_adapter = false;
+
+  GList* objects = g_dbus_object_manager_get_objects(manager_.get());
+  for (GList* l = objects; l != NULL; l = l->next) {
+    GDBusObject* object = G_DBUS_OBJECT(l->data);
+    if (getAdapterProperties(object, adapter_info) && (!config_["adapter-alias"].isString() || config_["adapter-alias"].asString() == adapter_info.alias)) {
+      found_adapter = true;
+      break;
+    }
+  }
+  g_list_free_full(objects, g_object_unref);
+
+  return found_adapter;
+}
+
+auto waybar::modules::Bluetooth::findConnectedDevices(const std::string& cur_adapter_path, std::vector<DeviceInfo>& connected_devices) -> void {
+  GList* objects = g_dbus_object_manager_get_objects(manager_.get());
+  for (GList* l = objects; l != NULL; l = l->next)
+  {
+    GDBusObject* object = G_DBUS_OBJECT(l->data);
+    DeviceInfo device;
+    if (getDeviceProperties(object, device) && device.connected && device.paired_adapter == cur_adapter_.path) {
+      connected_devices.push_back(device);
+    }
+  }
+  g_list_free_full(objects, g_object_unref);
+}