[feat] acknowledge remote input and wait for visual changes

apps/desktop/src/gui/features/input/remote_input_dispatcher.cpp

@@ -39,14 +39,14 @@ void RemoteInputDispatcher::Connect(const std::string& id) {
 }
 
 RemoteInputDispatcher::Result RemoteInputDispatcher::Push(
-    const std::string& id, const RemoteAction& action) {
+    const std::string& id, const RemoteAction& action, Completion completion) {
   // HostInfo owns raw arrays; it must never enter this value-copy queue.
   if (!Accepts(action)) return Result::rejected;
   std::lock_guard lock(mutex_);
   if (stopping_ || !connected_.count(id)) return Result::rejected;
-  if (IsMove(action) && !pending_.empty()) {
+  if (!completion && IsMove(action) && !pending_.empty()) {
     auto& last = pending_.back();
-    if (last.id == id && last.IsInput() && IsMove(*last.action)) {
+    if (!last.completion && last.id == id && last.IsInput() && IsMove(*last.action)) {
       last.action = action;
       last.queued_at = Clock::now();
       return Result::coalesced;
@@ -56,7 +56,7 @@ RemoteInputDispatcher::Result RemoteInputDispatcher::Push(
     QueueReleaseLocked(id);
     return Result::overflow;
   }
-  pending_.push_back({id, action, Clock::now(), ItemKind::input});
+  pending_.push_back({id, action, Clock::now(), ItemKind::input, 0, std::move(completion)});
   ++pending_counts_[id];
   ready_.notify_one();
   return Result::queued;
@@ -328,6 +328,9 @@ void RemoteInputDispatcher::Run() {
         !pending_counts_.count(item.id))
       logs_.erase(item.id);
     lock.unlock();
+    if (item.completion) {
+      try { item.completion(outcome); } catch (...) {}
+    }
     if (report) {
       try {
         report_(item.id, queued_ms, execution_ms, outcome);

apps/desktop/src/gui/features/input/remote_input_dispatcher.h

@@ -38,6 +38,7 @@ class RemoteInputDispatcher {
   // Optional targeted adapter; legacy callers fall back to full Release.
   using ReleaseMouse =
       std::function<InputOutcome(const std::string&, unsigned)>;
+  using Completion = std::function<void(InputOutcome)>;
   enum class Result { queued, coalesced, rejected, overflow };
   static constexpr size_t kMaxPendingPerController = 128;
 
@@ -47,7 +48,8 @@ class RemoteInputDispatcher {
   ~RemoteInputDispatcher();
   static bool Accepts(const RemoteAction& action);
   void Connect(const std::string& id);
-  Result Push(const std::string& id, const RemoteAction& action);
+  Result Push(const std::string& id, const RemoteAction& action,
+              Completion completion = {});
   void Disconnect(const std::string& id);
 
   // Scheduled recovery is not idle work. Check HasPendingReleases() as well,
@@ -68,6 +70,7 @@ class RemoteInputDispatcher {
     // Zero requests full controller cleanup; otherwise only these mouse
     // buttons.
     unsigned mouse_mask = 0;
+    Completion completion;
     bool IsReset() const { return kind == ItemKind::reset_display; }
     bool IsInput() const { return kind == ItemKind::input; }
     bool IsCleanup() const { return kind == ItemKind::cleanup; }
@@ -120,4 +123,4 @@ class RemoteInputDispatcher {
 
 }  // namespace crossdesk
 
-#endif
+#endif