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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2010, Michele Bosi                                             */
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#ifndef Applet_INCLUDE_ONCE
#define Applet_INCLUDE_ONCE

#include <vlGraphics/UIEventListener.hpp>
#include <vlGraphics/TrackballManipulator.hpp>
#include <vlGraphics/GhostCameraManipulator.hpp>
#include <vlGraphics/SceneManagerActorTree.hpp>
#include <vlGraphics/Rendering.hpp>
#include <vlGraphics/ReadPixels.hpp>

namespace vl
{
//-----------------------------------------------------------------------------
// Applet
//-----------------------------------------------------------------------------
  class VLGRAPHICS_EXPORT Applet: public UIEventListener
  {
    VL_INSTRUMENT_CLASS(vl::Applet, UIEventListener)

  public:
    Applet();

    void initialize();

    // --- UIEventListener ---

    virtual void addedListenerEvent(OpenGLContext* openglContext);

    virtual void removedListenerEvent(OpenGLContext*);

    virtual void keyReleaseEvent(unsigned short, EKey key);

    virtual void destroyEvent();

    virtual void updateEvent();

    virtual void resizeEvent(int, int);

    virtual void initEvent() {}
    
    virtual void enableEvent(bool) {}

    virtual void mouseMoveEvent(int, int) {}

    virtual void mouseUpEvent(EMouseButton, int, int) {}

    virtual void mouseDownEvent(EMouseButton, int, int) {}

    virtual void mouseWheelEvent(int) {}

    virtual void keyPressEvent(unsigned short, EKey) {}

    virtual void fileDroppedEvent(const std::vector<String>&) {}

    virtual void visibilityEvent(bool) {}

    // --- --- ---

    RenderingAbstract* rendering() { return mRendering.get(); }
    
    const RenderingAbstract* rendering() const { return mRendering.get(); }
    
    void setRendering(RenderingAbstract* rendering) { mRendering = rendering; }

    SceneManagerActorTree* sceneManager() { return mSceneManagerActorTree.get(); }

    const SceneManagerActorTree* sceneManager() const { return mSceneManagerActorTree.get(); }

    void setGhostCameraManipulator(GhostCameraManipulator* gcm) { mFly = gcm; }

    GhostCameraManipulator* ghostCameraManipulator() { return mFly.get(); }
    const GhostCameraManipulator* ghostCameraManipulator() const { return mFly.get(); }

    void setTrackball(TrackballManipulator* trackball) { mTrackball = trackball; }

    TrackballManipulator* trackball() { return mTrackball.get(); }
    const TrackballManipulator* trackball() const { return mTrackball.get(); }

    double fps() const { return mFPS; }

      virtual void updateScene() {}

    void setAppletName(const String& app_name) { mAppletName = app_name; } 

    const String& appletName() const { return mAppletName; }

  protected:
    void bindManipulators(Camera* camera);

  private:
    ref<RenderingAbstract> mRendering;
    ref<GhostCameraManipulator> mFly;
    ref<TrackballManipulator> mTrackball;
    ref<SceneManagerActorTree> mSceneManagerActorTree;
    ref<ReadPixels> mReadPixels;
    String mAppletName;
    double mStartTime;
    double mFPS;
    int mFrameCount;
  };
}

#endif