BTAdapter/HCIHandler Refine advertising/discovery state validation

HCIHandler advertising: Allow start/enable/disable even if already advertising

BTAdapter/HCIHandler start- or enable advertising: Fail start/enable if having open/pending connections or discovery is active,
BTAdapter/HCIHandler disabling advertising always allowed.

BTAdapter/HCIHandler start- or enable discovery: Fail start/enable if advertising is active.
BTAdapter/HCIHandler disabling discovery always allowed.

+++

BTAdapter::poweredOff(bool active) now used to align passive (active = false) state reset
for methods if !isPowered().

+++

Rename C++ BTAdapter::[getDiscovering() -> isDiscovering()]
Add Java BTAdapter::isDiscovering()

(Aligned with isAdvertising())

1 files changed, 5 insertions, 0 deletions

diff --git a/java/jau/direct_bt/DBTAdapter.java b/java/jau/direct_bt/DBTAdapter.java
index c2fc66ac..440b4f8e 100644
--- a/java/jau/direct_bt/DBTAdapter.java
+++ b/java/jau/direct_bt/DBTAdapter.java
@@ -244,6 +244,11 @@ public class DBTAdapter extends DBTObject implements BTAdapter
     }
 
     @Override
+    public final boolean isDiscovering() {
+        return ScanType.NONE != currentMetaScanType.get();
+    }
+
+    @Override
     public String toString() {
         if( !isValid() ) {
             return "Adapter" + "\u271D" + "["+addressAndType+", '"+name_cached+"', id "+dev_id+"]";