Introduce DCMachineEvent ...

... this is an DC-Plugin internal data-structure which can be
transformed to an ATBMachineEvent and sent to ISMAS.

DCMachineEvent is in fact a couple ot DeviceController::State and a
QString eventID.

Thi eventID is necessary to send a state-reset to ISMAS. ISMAS needs
same enventID for set- and reset Events.

src/ATBAPP/DeviceControllerDiag.h

@@ -73,6 +73,30 @@ namespace DeviceController {
 }
 
 
+// ----------------------------- DCMachineEvent -----------------------------------------
+
+class DCMachineEvent {
+public:
+    DCMachineEvent() = default;
+    DCMachineEvent(DeviceController::State state, const QString& id) : state(state), eventId(id) {}
+
+    DeviceController::State state;
+    QString eventId;
+
+    // Equality operator (required for QSet)
+    bool operator==(const DCMachineEvent& other) const {
+        return (state == other.state);
+    }
+};
+
+// Hash function (required for QSet)
+inline uint qHash(const DCMachineEvent& key, uint seed = 0) {
+    return qHash(static_cast<int>(key.state), seed);
+}
+
+
+// ------------------------ DeviceControllerDiag --------------------------------------
+
 class DeviceControllerDiag : public QObject
 {
     Q_OBJECT
@@ -90,7 +114,7 @@ public:
      */
     bool isErrorState();
     bool isOperatingState();
-    QSet<DeviceController::State> getCurrentMachineState();
+    QSet<DCMachineEvent> getCurrentMachineState();
 
     void setTimeout(int timeout);
 
@@ -132,8 +156,8 @@ private:
     int lastVoltage;
 
     DeviceController::State lastState;
-    QSet<DeviceController::State> machineEventSet;
-    QSet<DeviceController::State> previousMachineEventSet;
+    QSet<DCMachineEvent> machineEventSet;
+    QSet<DCMachineEvent> previousMachineEventSet;
     bool _isErrorState;
 
     PersistentData* pData;
@@ -145,7 +169,7 @@ private slots:
 
     void private_startDiag();                                    // diag entry method
     void private_setDiagEvent(DeviceController::State result);
-    void private_sendDiagEvent(DeviceController::State result, DeviceController::Action action);
+    void private_sendDiagEvent(DCMachineEvent result, DeviceController::Action action);
 
     void sys_superviseSystem();