Implement hyprland submap module

src/factory.cpp

@@ -67,6 +67,9 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
     if (ref == "hyprland/language") {
       return new waybar::modules::hyprland::Language(id, bar_, config_[name]);
     }
+    if (ref == "hyprland/submap") {
+      return new waybar::modules::hyprland::Submap(id, bar_, config_[name]);
+    }
 #endif
     if (ref == "idle_inhibitor") {
       return new waybar::modules::IdleInhibitor(id, bar_, config_[name]);

src/modules/hyprland/submap.cpp

@@ -0,0 +1,60 @@
+#include "modules/hyprland/submap.hpp"
+#include <spdlog/spdlog.h>
+#include <util/sanitize_str.hpp>
+
+namespace waybar::modules::hyprland {
+
+Submap::Submap(const std::string& id, const Bar& bar, const Json::Value& config)
+    : ALabel(config, "submap", id, "{}", 0, true), bar_(bar) {
+  modulesReady = true;
+
+  if (!gIPC.get()) {
+    gIPC = std::make_unique<IPC>();
+  }
+
+  label_.hide();
+  ALabel::update();
+
+  // register for hyprland ipc
+  gIPC->registerForIPC("submap", this);
+}
+
+Submap::~Submap() {
+  gIPC->unregisterForIPC(this);
+  // wait for possible event handler to finish
+  std::lock_guard<std::mutex> lg(mutex_);
+}
+
+auto Submap::update() -> void {
+  std::lock_guard<std::mutex> lg(mutex_);
+
+  if (submap_.empty()) {
+    event_box_.hide();
+  } else {
+    label_.set_markup(fmt::format(format_, submap_));
+    if (tooltipEnabled()) {
+      label_.set_tooltip_text(submap_);
+    }
+    event_box_.show();
+  }
+  // Call parent update
+  ALabel::update();
+}
+
+void Submap::onEvent(const std::string& ev) {
+  std::lock_guard<std::mutex> lg(mutex_);
+
+  if (ev.find("submap") == std::string::npos) {
+    return;
+  }
+
+  auto submapName = ev.substr(ev.find_last_of('>') + 1);
+  submapName = waybar::util::sanitize_string(submapName);
+
+  submap_ = submapName;
+
+  spdlog::debug("hyprland submap onevent with {}", submap_);
+
+  dp.emit();
+}
+}  // namespace waybar::modules::hyprland