1 // Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 // File : PyInterp_Dispatcher.h
23 // Author : Sergey Anikin, OCC
26 #ifndef PYINTERP_DISPATCHER_H
27 #define PYINTERP_DISPATCHER_H
29 #include "PyInterp.h" // !!! WARNING !!! THIS INCLUDE MUST BE THE VERY FIRST !!!
38 class PyInterp_Interp;
39 class PyInterp_Watcher;
40 class PyInterp_Dispatcher;
41 class PyInterp_ExecuteEvent;
43 class PYINTERP_EXPORT PyInterp_Request
45 friend class PyInterp_Dispatcher;
46 friend class PyInterp_ExecuteEvent;
49 PyInterp_Request( const PyInterp_Request& );
52 virtual ~PyInterp_Request() {};
53 // protected destructor - to control deletion of requests
56 PyInterp_Request( QObject* listener, bool sync = false )
57 : myIsSync( sync ), myListener( listener ) {};
59 static void Destroy( PyInterp_Request* );
62 bool IsSync() const { return myIsSync; }
63 // Returns true if this request should be processed synchronously,
64 // without putting it to a queue
67 virtual void safeExecute();
69 virtual void execute() = 0;
70 // Should be redefined in successors, contains actual request code
72 virtual QEvent* createEvent() const;
73 // This method can be overridden to customize notification event creation
75 virtual void processEvent( QObject* );
77 QObject* listener() const { return myListener; }
78 void setListener( QObject* );
89 class PYINTERP_EXPORT PyInterp_LockRequest : public PyInterp_Request
92 PyInterp_LockRequest( PyInterp_Interp* interp, QObject* listener = 0, bool sync = false )
93 : PyInterp_Request( listener, sync ), myInterp( interp ) {}
96 PyInterp_Interp* getInterp() const { return myInterp; }
98 virtual void safeExecute();
101 PyInterp_Interp* myInterp;
104 class PYINTERP_EXPORT PyInterp_Event : public QEvent
107 PyInterp_Event( const PyInterp_Event& );
111 enum { ES_NOTIFY = QEvent::User + 5000, ES_OK, ES_ERROR, ES_INCOMPLETE, ES_LAST };
113 PyInterp_Event( int type, PyInterp_Request* request )
114 : QEvent( (QEvent::Type)type ), myRequest( request ) {}
116 virtual ~PyInterp_Event();
118 PyInterp_Request* GetRequest() const { return myRequest; }
119 operator PyInterp_Request*() const { return myRequest; }
122 PyInterp_Request* myRequest;
125 class PYINTERP_EXPORT PyInterp_Dispatcher : protected QThread
127 PyInterp_Dispatcher(); // private constructor
130 static PyInterp_Dispatcher* Get();
132 virtual ~PyInterp_Dispatcher();
135 void Exec( PyInterp_Request* );
139 void processRequest( PyInterp_Request* );
140 void objectDestroyed( const QObject* );
143 typedef PyInterp_Request* RequestPtr;
145 QQueue<RequestPtr> myQueue;
147 PyInterp_Watcher* myWatcher;
149 static PyInterp_Dispatcher* myInstance;
151 friend class PyInterp_Watcher;
154 #endif // PYINTERP_DISPATCHER_H