Extract common ErrDisengagingIdler state's implementation

src/logic/command_base.cpp

@@ -3,6 +3,7 @@
 #include "../modules/selector.h"
 #include "../modules/motion.h"
 #include "../modules/leds.h"
+#include "../modules/user_input.h"
 
 namespace logic {
 
@@ -96,4 +97,11 @@ bool CommandBase::CheckToolIndex(uint8_t index) {
     }
 }
 
+void CommandBase::ErrDisengagingIdler() {
+    if (!mi::idler.Engaged()) {
+        state = ProgressCode::ERRWaitingForUser;
+        mui::userInput.Clear(); // remove all buffered events if any just before we wait for some input
+    }
+}
+
 } // namespace logic

src/logic/command_base.h

@@ -74,6 +74,9 @@ protected:
     /// If not, it returns false and sets the error to ErrorCode::INVALID_TOOL
     bool CheckToolIndex(uint8_t index);
 
+    /// Common error processing - disengaging idler
+    void ErrDisengagingIdler();
+
     ProgressCode state; ///< current progress state of the state machine
     ErrorCode error; ///< current error code
 };