71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGGA_GUIEVENTHANDLERVISITOR
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#define OSGGA_GUIEVENTHANDLERVISITOR 1
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#include <osgGA/Export>
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#include <osgGA/GUIEventAdapter>
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#include <osg/ref_ptr>
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namespace osgGA{
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// Some forward declarations
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class GUIActionAdapter;
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class GUIEventHandler;
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class CompositeGUIEventHandler;
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class MatrixManipulator;
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class StateSetManipulator;
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/**
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Base class for visiting GUIEventHandlers.
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A Default Visitor, (Might want to make it an Extrinsic Visitor at some point).
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By default, it does nothing to the things it visits. Sub classes of this Visitor
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need only override visit operations for the types of object they're interested in.
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*/
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class OSGGA_EXPORT GUIEventHandlerVisitor
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{
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public:
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virtual void visit(GUIEventHandler&) {}
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virtual void visit(CompositeGUIEventHandler&);
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virtual void visit(MatrixManipulator&) {};
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virtual void visit(StateSetManipulator&) {};
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// Accessors
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/** Get the GUI EventAdapter associated with this GUIEventHandlerVisitor */
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const GUIEventAdapter *getGUIEventAdapter() { return _gea.get(); }
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/** Get the GUI Action Adapter associated with this GEH Visitor */
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GUIActionAdapter *getGUIActionAdapter() { return _gaa; }
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protected:
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GUIEventHandlerVisitor(GUIEventAdapter* in, GUIActionAdapter* out):_gea(in),_gaa(out) {}
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virtual ~GUIEventHandlerVisitor() {}
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private:
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osg::ref_ptr<GUIEventAdapter> _gea;
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GUIActionAdapter* _gaa; // Just a pointer. NOT owned by this object.
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};
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};
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#endif
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