Add API methods for accessing current object position in the Adapter

Author: Stefano Mtangoo

messagekit/src/main/java/tz/co/hosannahighertech/messagekit/messages/MessagesListAdapter.java

@@ -370,6 +370,35 @@ public void clear(boolean notifyDataSetChanged) {
         }
     }
 
+    /**
+     * Get the message position in the recyclerview
+     *
+     * @param messageId Message ID
+     * @return 0 based position of the message in the adapter
+     */
+    @SuppressWarnings("unchecked")
+    public int getMessagePosition(String messageId) {
+        for (int position = 0; position < items.size(); position++) {
+            if ((items.get(position).item instanceof IMessage)) {
+                MESSAGE item = (MESSAGE) items.get(position).item;
+                if(item.getId().equals(messageId)){
+                    return position;
+                }
+            }
+        }
+        return -1;
+    }
+
+    /**
+     * Get the message position in the recyclerview
+     *
+     * @param message Message
+     * @return 0 based position of the message in the adapter
+     */
+    public int getMessagePosition(MESSAGE message) {
+        return getMessagePosition(message.getId());
+    }
+
     /**
      * Enables selection mode.
      *