working version

python_app/workflows/sequential_capture_workflow.py

@@ -30,6 +30,7 @@ class SequentialCaptureState:
     can_undo: bool
     is_complete: bool
     variant_count: int = 1
+    supports_batch_capture: bool = True
 
 
 class SequentialCaptureSession:
@@ -141,6 +142,7 @@ class SequentialCaptureSession:
             current_combo=current_combo,
             can_undo=bool(self._traces),
             is_complete=self.is_complete(),
+            supports_batch_capture=not self._manual_multi_device_capture,
         )
 
     def capture_current_combo(self) -> TraceData:
@@ -153,6 +155,8 @@ class SequentialCaptureSession:
 
         if self._is_multi_device:
             collection = self._radar.acquire_collection(collection_id=1)
+            if not collection.traces:
+                raise RuntimeError("Multi-device capture returned no traces")
             if self._manual_multi_device_capture:
                 trace = select_trace_for_combo(collection, combo)
                 self._traces.append(trace)
@@ -161,8 +165,6 @@ class SequentialCaptureSession:
 
             self._traces.extend(collection.traces)
             self._next_index = len(self._combos)
-            if not collection.traces:
-                raise RuntimeError("Multi-device capture returned no traces")
             return collection.traces[-1]
 
         assert self._input_switch is not None