// This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2005 Koen Deforche, Kessel-Lo, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
#ifndef WRADIOBUTTON_H_
#define WRADIOBUTTON_H_

#include <WAbstractToggleButton>

namespace Wt {

class WButtonGroup;

/*! \class WRadioButton WRadioButton WRadioButton
 *  \brief A user control that represents a radio button.
 *
 * %WRadioButton is an \link WWidget::setInline(bool) inline \endlink widget.
 *
 * Add the radio button to a WButtonGroup to group together different
 * options that are mutually exclusive.
 *
 * \sa WAbstractToggleButton
 */
class WRadioButton : public WAbstractToggleButton
{
public:
  /*! \brief Create an unchecked radio button with empty label and optional
   *         parent.
   */
  WRadioButton(WContainerWidget *parent = 0);

  /*! \brief Create an unchecked radio button with given text and optional
   *         parent.
   */
  WRadioButton(const WString& text, WContainerWidget *parent = 0);

  /*! \brief Delete a radio button
   */
  ~WRadioButton();

  virtual void	      getFormObjects(std::vector<WObject *>& formObjects);

private:
  WButtonGroup *buttonGroup_;

  void setGroup(WButtonGroup *buttonGroup);
  friend class WButtonGroup;

protected:
  virtual void        updateDom(DomElement& element, bool all);
  virtual DomElement *createDomElement();
  virtual void        getDomChanges(std::vector<DomElement *>& result);

  virtual void        setFormData(CgiEntry *entry);
  virtual void        setNoFormData();
};

}

#endif // WRADIOBUTTON_H_
