/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
 * Copyright 2018 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
#ifndef OSGEARTH_MONITOR_EXTENSION
#define OSGEARTH_MONITOR_EXTENSION 1

#include <osgEarth/Extension>
#include <osgEarth/MapNode>
#include <osgEarth/MapCallback>
#include <osgEarthUtil/Controls>

#include "MonitorUI"

namespace osgEarth { namespace Monitor
{
    using namespace osgEarth;
    using namespace osgEarth::Util::Controls;

    /**
     * Displays visual metadata about the visible layers in a map.
     */
    class MonitorExtension : public Extension,
                             public ExtensionInterface<MapNode>,
                             public ExtensionInterface<Control>
    {
    public:
        META_OE_Extension(osgEarth, MonitorExtension, monitor);

        // CTORs
        MonitorExtension();
        MonitorExtension(const ConfigOptions& options);

        // DTOR
        virtual ~MonitorExtension();
        
        void frame(const osg::FrameStamp*);


    public: // ExtensionInterface<MapNode>

        bool connect(MapNode* mapNode);

        bool disconnect(MapNode* mapNode);


    public: // ExtensionInterface<Control>

        bool connect(Control* control);

        bool disconnect(Control* control);
        

    private:
        osg::observer_ptr<MapNode> _mapNode;
        osg::ref_ptr<MonitorUI>    _ui;

        void ctor();
    };

} } // namespace osgEarth::Monitor

#endif // OSGEARTH_MONITOR_EXTENSION
