X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FEvents%2FEvents_Listener.h;h=74aac548334feda5a60f33c7e95b84c2f9dd626d;hb=b5893b0a30fac08134c24de4565cb513a43affa6;hp=90dedcdfd14e9b0654c12545a755a0a3228c62f3;hpb=3874b57fe5aba25ff5aee2a07654fc23c1ee8eb0;p=modules%2Fshaper.git

diff --git a/src/Events/Events_Listener.h b/src/Events/Events_Listener.h
index 90dedcdfd..74aac5483 100644
--- a/src/Events/Events_Listener.h
+++ b/src/Events/Events_Listener.h
@@ -9,8 +9,10 @@
 
 #include <Events.h>
 #include <memory>
+#include <map>
 
 class Events_Message;
+class Events_ID;
 
 /**\class Events_Listener
  * \ingroup EventsLoop
@@ -19,12 +21,26 @@ class Events_Message;
  * If some object wants to listen some events it must inherit
  * this class and register in the Loop.
  */
-class EVENTS_EXPORT Events_Listener
-{
+class Events_Listener {
+  /// map from event ID to groupped messages (for flush for groupMessages=true listeners)
+  std::map<char*, std::shared_ptr<Events_Message> > myGroups;
 
  public:
   //! This method is called by loop when the event is started to process.
-  virtual void processEvent(const std::shared_ptr<Events_Message>& theMessage) = 0;
+  EVENTS_EXPORT virtual void processEvent(const std::shared_ptr<Events_Message>& theMessage) = 0;
+
+  //! Listener that needs mostly grouped messages received returns true in this method.
+  //! In this case during the message is flushed, all the new messages are grouped, not sended
+  //! immideately and then sent in the end of flush.
+  EVENTS_EXPORT virtual bool groupMessages() {return false;}
+
+protected:
+  //! Allows to group messages while they are flushed (for flush for groupMessages=true listeners)
+  void groupWhileFlush(const std::shared_ptr<Events_Message>& theMessage);
+  //! Sends myGroups on flush finish
+  EVENTS_EXPORT void flushGrouped(const Events_ID& theID);
+
+  friend class Events_Loop;
 };
 
 #endif