[feat] add panel desktop takeover with exclusive input ownership

libs/controller/include/controller_session.h

@@ -86,7 +86,7 @@ public:
   void ForgetRemoteRequest(uint64_t request) { remote_results_.erase(request); }
   uint64_t Clipboard(bool write, const std::string &text = {});
   nlohmann::json Files(const nlohmann::json &request);
-  void BeginInput();
+  void BeginInput(bool acknowledge = true);
   std::string InputResult();
   bool InputAcknowledged() const { return remote_capabilities_.value("input_ack", nlohmann::json{}) == true; }
   std::optional<DecodedFrame> TakeFrame(DecodedFrame *recycle = nullptr);
@@ -130,6 +130,7 @@ private:
   std::vector<uint64_t> input_requests_;
   std::string input_result_ = "applied";
   bool input_ack_active_ = false;
+  bool input_ack_transport_ = false;
   bool clipboard_ready_ = false;
   web_clipboard::Assembler clipboard_assembler_;
   std::unique_ptr<ControllerFiles> files_;

libs/controller/src/controller_requests.cpp

@@ -25,20 +25,22 @@ std::optional<json> ControllerSession::TakeRemoteResult(uint64_t request) {
   return result;
 }
 
-void ControllerSession::BeginInput() {
+void ControllerSession::BeginInput(bool acknowledge) {
   action_keys_ = keys_;
   action_buttons_ = buttons_;
   for (const auto id : input_requests_) remote_results_.erase(id);
   input_requests_.clear();
   input_result_ = "applied";
-  input_ack_active_ = InputAcknowledged();
+  input_ack_transport_ = InputAcknowledged();
+  input_ack_active_ = acknowledge && input_ack_transport_;
 }
 
 bool ControllerSession::SendInput(const char *stream, const RemoteAction &action) {
-  if (!input_ack_active_) return Send(stream, action.to_json());
+  if (!input_ack_transport_) return Send(stream, action.to_json());
   const auto id = RequestRemote("input", json::parse(action.to_json()));
   if (!id) return false;
-  input_requests_.push_back(id);
+  if (input_ack_active_) input_requests_.push_back(id);
+  else remote_results_.erase(id);
   return true;
 }