* reverted Adi's premature changes to BWindow and restored _DetermineTarget() and

task_looper() again.
* removed BMessenger::fPreferred - whenever you had to specify "usePreferred" separately,
  you don't have to do that anymore - use B_PREFERRED_TOKEN instead.
* fixed BTokenSpace::GetToken() semantics: it will no longer touch the "object" argument
  in case of failure.
* Introduced a BWindow::_DistributeMessage() that will be part of the event dispatcher
  counterpart to the app_server (the other will be _DetermineTarget()).
* Made it easier to use Michael's Message4 implementation: just add the following line
  to your UserBuildConfig:
	AppendToConfigVar DEFINES : HAIKU_TOP src : USING_MESSAGE4 : global ;
* Introduced ServerWindow::HandlerMessenger() and FocusMessenger() - the first will
  target the client handler, while the other will target the preferred handler of the
  client looper (usually the view having focus).
* Fixed dano message unflattening in the Message4 code.
* Changed BMessage::PrintToStream() to no longer use macros in the Message4 implementation.
* I hope that's all - it's a huge change, but it's all connected.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15046 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/app/Message.h

@@ -6,6 +6,10 @@
  *	Erik Jaesler ([email protected])
  *	DarkWyrm <[email protected]>
  */
+#ifdef USING_MESSAGE4
+#	include <Message4.h>
+#else
+
 #ifndef _MESSAGE_H
 #define _MESSAGE_H
 
@@ -309,20 +313,17 @@ virtual	void		_ReservedMessage3();
 
 		status_t	_send_(port_id port,
 							int32 token,
-							bool preferred,
 							bigtime_t timeout,
 							bool reply_required,
 							BMessenger &reply_to) const;
 		status_t	send_message(port_id port,
 								team_id port_owner,
 								int32 token,
-								bool preferred,
 								BMessage *reply,
 								bigtime_t send_timeout,
 								bigtime_t reply_timeout) const;
 static	status_t	_SendFlattenedMessage(void *data, int32 size,
-						port_id port, int32 token, bool preferred,
-						bigtime_t timeout);
+						port_id port, int32 token, bigtime_t timeout);
 
 static	void		_StaticInit();
 static	void		_StaticCleanup();
@@ -429,3 +430,5 @@ static	BBlockCache	*sMsgCache;
 };
 
 #endif	// _MESSAGE_H
+#endif	// USING_MESSAGE4
+