ClientManager: move the Client inner class detail in the cpp file

src/client_manager.cc

@@ -7,6 +7,30 @@
 namespace Kakoune
 {
 
+struct ClientManager::Client
+{
+    Client(std::unique_ptr<UserInterface>&& ui, Window& window,
+           String name)
+        : user_interface(std::move(ui)),
+          input_handler(*user_interface),
+          name(std::move(name))
+    {
+        assert(not this->name.empty());
+        context().change_editor(window);
+    }
+    Client(Client&&) = delete;
+    Client& operator=(Client&& other) = delete;
+
+    Context& context() { return input_handler.context(); }
+
+    std::unique_ptr<UserInterface> user_interface;
+    InputHandler  input_handler;
+    String        name;
+};
+
+ClientManager::ClientManager() = default;
+ClientManager::~ClientManager() = default;
+
 String ClientManager::generate_name() const
 {
     for (int i = 0; true; ++i)
@@ -32,10 +56,7 @@ void ClientManager::create_client(std::unique_ptr<UserInterface>&& ui,
     Buffer& buffer = **BufferManager::instance().begin();
     m_clients.emplace_back(new Client{std::move(ui), get_unused_window_for_buffer(buffer),
                                       generate_name()});
-
-    InputHandler*  input_handler = &m_clients.back()->input_handler;
     Context*       context = &m_clients.back()->context();
-
     try
     {
         CommandManager::instance().execute(init_commands, *context);

src/client_manager.hh

@@ -12,6 +12,9 @@ struct client_removed{};
 class ClientManager : public Singleton<ClientManager>
 {
 public:
+    ClientManager();
+    ~ClientManager();
+
     void create_client(std::unique_ptr<UserInterface>&& ui,
                        const String& init_cmd);
 
@@ -30,23 +33,7 @@ private:
     void remove_client_by_context(Context& context);
     String generate_name() const;
 
-    struct Client
+    struct Client;
-    {
-        Client(std::unique_ptr<UserInterface>&& ui, Window& window,
-               String name)
-            : user_interface(std::move(ui)),
-              input_handler(*user_interface),
-              name(std::move(name)) { context().change_editor(window); }
-        Client(Client&&) = delete;
-        Client& operator=(Client&& other) = delete;
-
-        Context& context() { return input_handler.context(); }
-
-        std::unique_ptr<UserInterface> user_interface;
-        InputHandler  input_handler;
-        String        name;
-    };
-
     std::vector<std::unique_ptr<Client>> m_clients;
     std::vector<std::unique_ptr<Window>> m_windows;
 };