/******************************************************************************
  BaseDim  
******************************************************************************/
class BaseDim
{
  tolua_throws|CEGUI::InvalidRequestException,error| float getValue(const Window& wnd) const;
  tolua_throws|CEGUI::InvalidRequestException,error| float getValue(const Window& wnd, const Rect& container) const;
  BaseDim* clone() const;
  DimensionOperator getDimensionOperator() const;
  void setDimensionOperator(DimensionOperator op);
  const BaseDim* getOperand() const;
  void setOperand(const BaseDim& operand);
  //void writeXMLToStream(OutStream& out_stream) const;
};

/******************************************************************************
  AbsoluteDim 
******************************************************************************/
class AbsoluteDim : public BaseDim
{
  void setValue(float val);
  AbsoluteDim(float val);
};

/******************************************************************************
  ImageDim
******************************************************************************/
class ImageDim : public BaseDim 
{
  void setSourceImage(string imageset, string image);
  void setSourceDimension(DimensionType dim);
  ImageDim(string imageset, string image, DimensionType dim);
};

/******************************************************************************
  WidgetDim
******************************************************************************/
class WidgetDim : public BaseDim
{
  void setWidgetName(string name);
  void setSourceDimension(DimensionType dim); 
  WidgetDim(string name, DimensionType dim);
};

/******************************************************************************
  UnifiedDim
******************************************************************************/
class UnifiedDim : public BaseDim 
{
  UnifiedDim(const UDim& value, DimensionType dim);
};

/******************************************************************************
  FontDim
******************************************************************************/
class FontDim : public BaseDim
{
  FontDim(string name, string font, string text, FontMetricType metric, float padding = 0);
};

/******************************************************************************
  PropertyDim
******************************************************************************/
class PropertyDim : public BaseDim
{
  PropertyDim(string name, string property, DimensionType type);
};

/******************************************************************************
  Dimension
******************************************************************************/
class Dimension
{
  const BaseDim& getBaseDimension() const;
  void setBaseDimension(const BaseDim& dim);
  DimensionType getDimensionType() const;
  void setDimensionType(DimensionType type);

  //Dimension& operator=(const Dimension& other);
  //void writeXMLToStream(OutStream& out_stream) const;
  Dimension(const BaseDim& dim, DimensionType type);
  Dimension(const Dimension& other);
  Dimension();
};

/******************************************************************************
  ComponentArea 
******************************************************************************/
class ComponentArea
{
  Rect getPixelRect(const Window& wnd) const;
  Rect getPixelRect(const Window& wnd, const Rect& container) const;
  //void writeXMLToStream(OutStream& out_stream) const;
  bool isAreaFetchedFromProperty() const;
  string getAreaPropertySource() const;
  void setAreaPropertySource(string property);
  Dimension d_left;
  Dimension d_top;
  Dimension d_right_or_width;
  Dimension d_bottom_or_height;
  ComponentArea();
};