feedback-manager: Don't trigger haptic feedbacks when vibra is busy

This just gives odd vibration. Later on we should use priorities to
allow for higher priority events like phone calls to override lower
priority events like e.g. button presses. This is similar to how we want
to handle LED patterns.

Signed-off-by: Guido Günther <agx@sigxcpu.org>

src/fbd-feedback-manager.c

@@ -414,6 +414,10 @@ fbd_feedback_manager_handle_trigger_feedback (LfbGdbusFeedback      *object,
       FbdFeedbackBase *fb = FBD_FEEDBACK_BASE (l->data);
 
       if (fbd_feedback_is_available (FBD_FEEDBACK_BASE (fb))) {
+        /* Handle one haptic feedback at a time */
+        /* TODO: should use priorities */
+        if (FBD_IS_FEEDBACK_VIBRA (fb) && fbd_dev_vibra_is_busy (self->vibra))
+          continue;
         fbd_event_add_feedback (event, fb);
         found_fb = TRUE;
       }