1 // Copyright (C) 2007-2010 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
23 // File : SMESH_subMeshEventListener.hxx
24 // Created : Mon Nov 13 10:45:49 2006
25 // Author : Edward AGAPOV (eap)
27 #ifndef SMESH_subMeshEventListener_HeaderFile
28 #define SMESH_subMeshEventListener_HeaderFile
30 #include "SMESH_SMESH.hxx"
36 class SMESH_Hypothesis;
37 struct SMESH_subMeshEventListenerData;
39 // ------------------------------------------------------------------
41 * \brief A base for objects reacting on submesh events
43 // ------------------------------------------------------------------
45 class SMESH_EXPORT SMESH_subMeshEventListener
47 bool myIsDeletable; //!< if true, it will be deleted by SMESH_subMesh
48 mutable std::set<SMESH_subMesh*> myBusySM; //!< to avoid infinite recursion via events
49 friend class SMESH_subMesh;
51 SMESH_subMeshEventListener(bool isDeletable):myIsDeletable(isDeletable) {}
52 bool IsDeletable() const { return myIsDeletable; }
54 * \brief Do something on a certain event
55 * \param event - algo_event or compute_event itself (of SMESH_subMesh)
56 * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
57 * \param subMesh - the submesh where the event occures
58 * \param data - listener data stored in the subMesh
59 * \param hyp - hypothesis, if eventType is algo_event
61 * The base implementation (see SMESH_subMesh.cxx) translates CLEAN event
62 * to the subMesh stored in the listener data. Also it sends SUBMESH_COMPUTED
63 * event in case of successful COMPUTE event.
65 virtual void ProcessEvent(const int event,
67 SMESH_subMesh* subMesh,
68 SMESH_subMeshEventListenerData* data,
69 const SMESH_Hypothesis* hyp = 0);
72 // ------------------------------------------------------------------
74 * \brief Data specific for EventListener and to be stored in a submesh
76 // ------------------------------------------------------------------
78 struct SMESH_subMeshEventListenerData
80 bool myIsDeletable; //!< if true, it will be deleted by SMESH_subMesh
81 int myType; //!< to recognize data type
82 std::list<SMESH_subMesh*> mySubMeshes; //!< generally: submeshes depending
83 // on the one storing this data
85 SMESH_subMeshEventListenerData(bool isDeletable):myIsDeletable(isDeletable) {}
86 virtual ~SMESH_subMeshEventListenerData() {}
87 bool IsDeletable() const { return myIsDeletable; }
90 * \brief Create a default listener data.
91 * \param dependentSM - subMesh to store
92 * \param type - data type
93 * \retval SMESH_subMeshEventListenerData* - a new listener data
95 * See SMESH_subMeshEventListener::ProcessEvent() to know how the default
96 * listener uses it (implementation is in SMESH_subMesh.cxx)
98 static SMESH_subMeshEventListenerData* MakeData(SMESH_subMesh* dependentSM,
101 SMESH_subMeshEventListenerData* data = new SMESH_subMeshEventListenerData(true);
102 data->mySubMeshes.push_back( dependentSM );