1 // Copyright (C) 2014-2023 CEA, EDF
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #ifndef PlaneGCSSolver_Update_H_
21 #define PlaneGCSSolver_Update_H_
23 #include <ModelAPI_Feature.h>
29 class SketchSolver_Constraint;
30 class PlaneGCSSolver_Update;
31 typedef std::shared_ptr<PlaneGCSSolver_Update> UpdaterPtr;
33 /** \class PlaneGCSSolver_Update
35 * \brief Send events to listeners about changing a feature
37 class PlaneGCSSolver_Update
40 PlaneGCSSolver_Update(UpdaterPtr theNext = UpdaterPtr())
44 virtual ~PlaneGCSSolver_Update() {}
46 /// \brief Attach listener
47 /// \param theObserver [in] object which want to receive notifications
48 /// \param theType [in] receive notifications about changing objects
49 /// of theType and their derivatives
50 virtual void attach(SketchSolver_Constraint* theObserver, const std::string& theType) = 0;
52 /// \brief Detach listener
53 void detach(SketchSolver_Constraint* theObserver) {
54 std::list<SketchSolver_Constraint*>::iterator anIt = myObservers.begin();
55 for (; anIt != myObservers.end(); ++anIt)
56 if (*anIt == theObserver) {
57 myObservers.erase(anIt);
60 // detach listener from all senders
62 myNext->detach(theObserver);
65 /// \brief Send notification about update of the feature to all interested
66 virtual void update(const FeaturePtr& theFeature) = 0;
69 UpdaterPtr myNext; ///< next updater, access if current one unable to process request
70 std::list<SketchSolver_Constraint*> myObservers; ///< list of observers