Selectable.h

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/******************************************************************************
 *
 *  Copyright (C) 2008 Boris Iven, Max Hermann
 *
 *  This file is part of the "CEDRIC Event Display" application.
 *
 *****************************************************************************/

#ifndef SELECTABLE_H
#define SELECTABLE_H

#include "PickingHandler.h"
#include <osgGA/GUIEventAdapter>

class Selectable : public PickingHandler::Pickable
{
public:
        Selectable(): m_selected(false), m_highlighted(false) {}
        virtual ~Selectable() { if( s_current==this ) s_current=0; }
        
        virtual bool onSelect( bool selected )       = 0;
        virtual bool onHighlight( bool highlighted ) = 0;

        virtual const std::string& toolTip( osg::Node* ) { static std::string empty(""); return empty; }

        static bool selectCurrent( bool select=true );
        static bool toggleCurrent();
        
        static void resetCurrent() { s_current = 0; }
        
        static Selectable* getCurrent() { return s_current; }
        
protected:
        bool isSelected() const { return m_selected; }
        
        virtual void onMouseOver ( const osgGA::GUIEventAdapter* ea, osg::Node* );
        virtual void onMouseEnter( const osgGA::GUIEventAdapter* ea, osg::Node* );
        virtual void onMouseLeave( const osgGA::GUIEventAdapter* ea );
        
private:
        // toolTipNode is managed by PickingHandler and set before onMouseEnter() call.
        // This allows for changing the toolTipNode when multiple Viewer windows (and multiple PickingHandlers) are used.
        //~ void setToolTipNode( osgText::Text* node ) { m_toolTipNode = node; }
        //~ osgText::Text* getToolTipNode() { return m_toolTipNode.get(); }     
        
        //~ void setToolTip( std::string text )                  { if( _toolTipNode.valid() ) _toolTipNode->setText(text); }
        //~ void setToolTipPosition( float x, float y, float z ) { if( _toolTipNode.valid() ) _toolTipNode->setPosition( osg::Vec3(x,y,z) ); }
        
        bool m_selected;
        bool m_highlighted;

        static Selectable* s_current;
};

#endif