Improve sway/language

include/modules/sway/ipc/ipc.hpp

@@ -29,4 +29,8 @@ enum ipc_command_type {
   IPC_EVENT_BINDING = ((1 << 31) | 5),
   IPC_EVENT_SHUTDOWN = ((1 << 31) | 6),
   IPC_EVENT_TICK = ((1 << 31) | 7),
+
+	// sway-specific event types
+	IPC_EVENT_BAR_STATE_UPDATE = ((1<<31) | 20),
+	IPC_EVENT_INPUT = ((1<<31) | 21),
 };

include/modules/sway/language.hpp

@@ -1,6 +1,11 @@
 #pragma once
 
 #include <fmt/format.h>
+#include <xkbcommon/xkbregistry.h>
+
+#include <map>
+#include <string>
+
 #include "ALabel.hpp"
 #include "bar.hpp"
 #include "client.hpp"
@@ -16,13 +21,40 @@ class Language : public ALabel, public sigc::trackable {
   auto update() -> void;
 
  private:
+  struct Layout {
+    std::string full_name;
+    std::string short_name;
+    std::string variant;
+  };
+
+  class XKBContext {
+   public:
+	   XKBContext();
+	   ~XKBContext();
+	   auto next_layout() -> Layout*;
+   private:
+	rxkb_context* context_ = nullptr;
+	rxkb_layout* xkb_layout_ = nullptr;
+	Layout* layout_ = nullptr;
+  };
+
   void onEvent(const struct Ipc::ipc_response&);
   void onCmd(const struct Ipc::ipc_response&);
+
+  auto set_current_layout(std::string current_layout) -> void;
+  auto init_layouts_map(const std::vector<std::string>& used_layouts) -> void;
+
+  const static std::string XKB_LAYOUT_NAMES_KEY;
+  const static std::string XKB_ACTIVE_LAYOUT_NAME_KEY;
   
-  std::string      lang_;
-  util::JsonParser parser_;
-  std::mutex       mutex_;
-  Ipc              ipc_;
+  Layout                        layout_;
+  std::map<std::string, Layout> layouts_map_;
+  XKBContext xkb_context_;
+  bool is_variant_displayed;
+
+  util::JsonParser         parser_;
+  std::mutex               mutex_;
+  Ipc                      ipc_;
 };
 
 }  // namespace waybar::modules::sway

include/util/string.hpp

@@ -0,0 +1,15 @@
+#include <string>
+
+const std::string WHITESPACE = " \n\r\t\f\v";
+
+std::string ltrim(const std::string s) {
+  size_t begin = s.find_first_not_of(WHITESPACE);
+  return (begin == std::string::npos) ? "" : s.substr(begin);
+}
+
+std::string rtrim(const std::string s) {
+  size_t end = s.find_last_not_of(WHITESPACE);
+  return (end == std::string::npos) ? "" : s.substr(0, end + 1);
+}
+
+std::string trim(const std::string& s) { return rtrim(ltrim(s)); }