// Canvas gui/dialog manager
//
// Copyright (C) 2012  Thomas Geymayer <tomgey@gmail.com>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

#ifndef CANVAS_GUI_MGR_HXX_
#define CANVAS_GUI_MGR_HXX_

#include "property_based_mgr.hxx"
#include <Canvas/canvas_fwd.hpp>
#include <Canvas/placement.hxx>

#include <simgear/props/propertyObject.hxx>

#include <osg/ref_ptr>
#include <osg/Geode>
#include <osg/MatrixTransform>

namespace osgGA
{
  class GUIEventAdapter;
}

class GUIEventHandler;
class GUIMgr:
  public PropertyBasedMgr
{
  public:
    GUIMgr();

    virtual void init();
    virtual void shutdown();

    virtual void elementCreated(PropertyBasedElementPtr element);

    bool handleEvent(const osgGA::GUIEventAdapter& ea);

  protected:
    osg::ref_ptr<GUIEventHandler>       _event_handler;
    osg::ref_ptr<osg::MatrixTransform>  _transform;

    simgear::PropertyObject<int>        _width,
                                        _height;

    int _last_push,
        _last_x,
        _last_y;

    canvas::WindowPtr getWindow(size_t i);
    canvas::Placements addPlacement( const SGPropertyNode*,
                                     CanvasPtr canvas );

    bool handleMouse(const osgGA::GUIEventAdapter& ea);
    void handleResize(int x, int y, int width, int height);
};

#endif /* CANVAS_GUI_MGR_HXX_ */