Waybar/src/modules/sni/host.cpp

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#include "modules/sni/host.hpp"
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#include <fmt/ostream.h>
#include <spdlog/spdlog.h>
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namespace waybar::modules::SNI {
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Host::Host(const std::size_t id, const Json::Value& config,
const std::function<void(std::unique_ptr<Item>&)>& on_add,
const std::function<void(std::unique_ptr<Item>&)>& on_remove)
: bus_name_("org.kde.StatusNotifierHost-" + std::to_string(getpid()) + "-" +
std::to_string(id)),
object_path_("/StatusNotifierHost/" + std::to_string(id)),
bus_name_id_(Gio::DBus::own_name(Gio::DBus::BusType::BUS_TYPE_SESSION, bus_name_,
sigc::mem_fun(*this, &Host::busAcquired))),
config_(config),
on_add_(on_add),
on_remove_(on_remove) {}
Host::~Host() {
if (bus_name_id_ > 0) {
Gio::DBus::unwatch_name(bus_name_id_);
bus_name_id_ = 0;
}
if (watcher_id_ > 0) {
Gio::DBus::unwatch_name(watcher_id_);
watcher_id_ = 0;
}
g_cancellable_cancel(cancellable_);
g_clear_object(&cancellable_);
g_clear_object(&watcher_);
}
void Host::busAcquired(const Glib::RefPtr<Gio::DBus::Connection>& conn, Glib::ustring name) {
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watcher_id_ = Gio::DBus::watch_name(conn,
"org.kde.StatusNotifierWatcher",
sigc::mem_fun(*this, &Host::nameAppeared),
sigc::mem_fun(*this, &Host::nameVanished));
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}
void Host::nameAppeared(const Glib::RefPtr<Gio::DBus::Connection>& conn, const Glib::ustring name,
const Glib::ustring& name_owner) {
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if (cancellable_ != nullptr) {
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// TODO
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return;
}
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cancellable_ = g_cancellable_new();
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sn_watcher_proxy_new(conn->gobj(),
G_DBUS_PROXY_FLAGS_NONE,
"org.kde.StatusNotifierWatcher",
"/StatusNotifierWatcher",
cancellable_,
&Host::proxyReady,
this);
}
void Host::nameVanished(const Glib::RefPtr<Gio::DBus::Connection>& conn, const Glib::ustring name) {
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g_cancellable_cancel(cancellable_);
g_clear_object(&cancellable_);
g_clear_object(&watcher_);
items_.clear();
}
void Host::proxyReady(GObject* src, GAsyncResult* res, gpointer data) {
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GError* error = nullptr;
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SnWatcher* watcher = sn_watcher_proxy_new_finish(res, &error);
if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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spdlog::error("Host: {}", error->message);
g_error_free(error);
return;
}
auto host = static_cast<SNI::Host*>(data);
host->watcher_ = watcher;
if (error != nullptr) {
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spdlog::error("Host: {}", error->message);
g_error_free(error);
return;
}
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sn_watcher_call_register_host(
host->watcher_, host->object_path_.c_str(), host->cancellable_, &Host::registerHost, data);
}
void Host::registerHost(GObject* src, GAsyncResult* res, gpointer data) {
GError* error = nullptr;
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sn_watcher_call_register_host_finish(SN_WATCHER(src), res, &error);
if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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spdlog::error("Host: {}", error->message);
g_error_free(error);
return;
}
auto host = static_cast<SNI::Host*>(data);
if (error != nullptr) {
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spdlog::error("Host: {}", error->message);
g_error_free(error);
return;
}
g_signal_connect(host->watcher_, "item-registered", G_CALLBACK(&Host::itemRegistered), data);
g_signal_connect(host->watcher_, "item-unregistered", G_CALLBACK(&Host::itemUnregistered), data);
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auto items = sn_watcher_dup_registered_items(host->watcher_);
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if (items != nullptr) {
for (uint32_t i = 0; items[i] != nullptr; i += 1) {
host->addRegisteredItem(items[i]);
}
}
g_strfreev(items);
}
void Host::itemRegistered(SnWatcher* watcher, const gchar* service, gpointer data) {
auto host = static_cast<SNI::Host*>(data);
host->addRegisteredItem(service);
}
void Host::itemUnregistered(SnWatcher* watcher, const gchar* service, gpointer data) {
auto host = static_cast<SNI::Host*>(data);
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auto [bus_name, object_path] = host->getBusNameAndObjectPath(service);
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for (auto it = host->items_.begin(); it != host->items_.end(); ++it) {
if ((*it)->bus_name == bus_name && (*it)->object_path == object_path) {
host->on_remove_(*it);
host->items_.erase(it);
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break;
}
}
}
std::tuple<std::string, std::string> Host::getBusNameAndObjectPath(const std::string service) {
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auto it = service.find('/');
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if (it != std::string::npos) {
return {service.substr(0, it), service.substr(it)};
}
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return {service, "/StatusNotifierItem"};
}
void Host::addRegisteredItem(std::string service) {
std::string bus_name, object_path;
std::tie(bus_name, object_path) = getBusNameAndObjectPath(service);
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auto it = std::find_if(items_.begin(), items_.end(), [&bus_name, &object_path](const auto& item) {
return bus_name == item->bus_name && object_path == item->object_path;
});
if (it == items_.end()) {
items_.emplace_back(new Item(bus_name, object_path, config_));
on_add_(items_.back());
}
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}
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} // namespace waybar::modules::SNI