Add DBGattServer::Listener::write[Char|Desc]ValueDone() (C++/Java), notifyies completion of single or bulk writeCharValue() ..

BTGattHandler maintains a handle list 'writeDataQueueHandles',
grouping all queued writes (PREPARE_WRITE_REQ).

Final EXECUTE_WRITE_REQ will issue one applyWrite(..) per queued write-req.
If all were successful (accepted and performed),
one signalWriteDone() will be issued per handle.

This allows the user to react on a completed write-queue having the full data set available.

+++

1 files changed, 23 insertions, 0 deletions

diff --git a/java/org/direct_bt/DBGattServer.java b/java/org/direct_bt/DBGattServer.java
index d625e7eb..e4001198 100644
--- a/java/org/direct_bt/DBGattServer.java
+++ b/java/org/direct_bt/DBGattServer.java
@@ -142,10 +142,21 @@ public final class DBGattServer implements AutoCloseable
          * @param value
          * @param value_offset
          * @return true if master write has been accepted by GATT-Server listener, otherwise false. Only if all listener return true, the write action will be allowed.
+         * @see #writeCharValueDone(BTDevice, DBGattService, DBGattChar)
          */
         public abstract boolean writeCharValue(final BTDevice device, final DBGattService s, final DBGattChar c, final byte[] value, final int value_offset);
 
         /**
+         * Notifies completion of single or bulk {@link #writeCharValue(BTDevice, DBGattService, DBGattChar, byte[], int) writeCharValue()} after having accepted and performed all write requests.
+         *
+         * @param device
+         * @param s
+         * @param c
+         * @see #writeCharValue(BTDevice, DBGattService, DBGattChar, byte[], int)
+         */
+        public abstract void writeCharValueDone(final BTDevice device, final DBGattService s, final DBGattChar c);
+
+        /**
          * Signals attempt to write a single or bulk (prepare) value.
          *
          * Callee shall accept the write request by returning true, otherwise false.
@@ -157,11 +168,23 @@ public final class DBGattServer implements AutoCloseable
          * @param value
          * @param value_offset
          * @return true if master write has been accepted by GATT-Server listener, otherwise false. Only if all listener return true, the write action will be allowed.
+         * @see #writeDescValueDone(BTDevice, DBGattService, DBGattChar, DBGattDesc)
          */
         public abstract boolean writeDescValue(final BTDevice device, final DBGattService s, final DBGattChar c, final DBGattDesc d,
                                                final byte[] value, final int value_offset);
 
         /**
+         * Notifies completion of single or bulk {@link #writeDescValue(BTDevice, DBGattService, DBGattChar, DBGattDesc, byte[], int) writeDescValue()} after having accepted and performed all write requests.
+         *
+         * @param device
+         * @param s
+         * @param c
+         * @param d
+         * @see #writeDescValue(BTDevice, DBGattService, DBGattChar, DBGattDesc, byte[], int)
+         */
+        public abstract void writeDescValueDone(final BTDevice device, final DBGattService s, final DBGattChar c, final DBGattDesc d);
+
+        /**
          * Notifies a change of the Client Characteristic Configuration Descriptor (CCCD) value.
          *
          * @param device