/*!
 * @file shell.h
 * Definition of a on-screen-shell
 *
 * @todo Buffer Display in different Colors for different debug mode.
 * @todo choose color of the Font and the background.
 */

#ifndef _SHELL_H
#define _SHELL_H

#include "glgui_widget.h"
#include "event_listener.h"

// FORWARD DECLARATION
class MultiLineText;

//! Namespace of the Shell of ORXONOX.
namespace OrxGui
{
  class Shell : public GLGuiWidget
  {

  public:
    Shell();
    virtual ~Shell();

    void pushNotifyMessage(const std::string& message);

    // BUFFERS
    void setBufferDisplaySize(unsigned int bufferDisplaySize);
    void printToDisplayBuffer(const std::string& text);

    void clear();

    // EventListener
    virtual void processEvents(const Event &event);
    // Element2D-functions
    virtual void tick(float dt);
    virtual void draw() const;


    void debug() const;

  private:
    void updateResolution(unsigned int width);
    void repositionText();
    void applyTextSettings(Text* text);
    void applySettings();
    // helpers //
    Vector2D calculateLinePosition(unsigned int lineNumber);

  private:
    unsigned int                lineSpacing;            //!< The Spacing between lines.

    // BUFFER
    unsigned int                bufferDisplaySize;      //!< The Size of the Display-buffer, in lines (not in characters).
    std::list<MultiLineText*>   bufferText;             //!< A list of stored bufferTexts for the display of the buffer.

    unsigned long               linesProcessed;         //!< How many Lines have been processed.
  };

}

#endif /* _SHELL_H */