// File: ftogglebutton.h
// Provides: class FToggleButton
//
//  Inheritance diagram
//  ═══════════════════
//
// ▕▔▔▔▔▔▔▔▔▔▏ ▕▔▔▔▔▔▔▔▔▔▏
// ▕ FObject ▏ ▕  FTerm  ▏
// ▕▁▁▁▁▁▁▁▁▁▏ ▕▁▁▁▁▁▁▁▁▁▏
//      ▲           ▲
//      │           │
//      └─────┬─────┘
//            │
//       ▕▔▔▔▔▔▔▔▔▏
//       ▕ FVTerm ▏
//       ▕▁▁▁▁▁▁▁▁▏
//            ▲
//            │
//       ▕▔▔▔▔▔▔▔▔▔▏
//       ▕ FWidget ▏
//       ▕▁▁▁▁▁▁▁▁▁▏
//            ▲
//            │
//    ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏
//    ▕ FToggleButton ▏
//    ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏

#ifndef _FTOGGLEBUTTON_H
#define _FTOGGLEBUTTON_H

#include "fwidget.h"


// class forward declaration
class FButtonGroup;

//----------------------------------------------------------------------
// class FToggleButton - abstract class for FRadioButton, FCheckBox, ...
//----------------------------------------------------------------------

#pragma pack(push)
#pragma pack(1)

class FToggleButton : public FWidget
{
 public:
   // Using-declaration
   using FWidget::setGeometry;

   // Constructors
   explicit FToggleButton (FWidget* = 0);
   FToggleButton (const FString&, FWidget* = 0);

   // Destructor
   virtual ~FToggleButton();

   // Accessors
   virtual const char* getClassName() const;
   FString&      getText();

   // Mutators
   void          setGeometry (int, int, int, int, bool = true);
   bool          setNoUnderline (bool);
   bool          setNoUnderline();
   bool          unsetNoUnderline();
   bool          setEnable (bool);
   bool          setEnable();
   bool          unsetEnable();
   bool          setDisable();
   bool          setFocus (bool);
   bool          setFocus();
   bool          unsetFocus();
   bool          setChecked (bool);
   bool          setChecked();
   bool          unsetChecked();
   virtual void  setText (const FString);

   // Inquiries
   bool          isChecked();

   // Methods
   void          hide();

   // Event handlers
   void          onMouseDown (FMouseEvent*);
   void          onMouseUp (FMouseEvent*);
   void          onWheel (FWheelEvent*);
   void          onAccel (FAccelEvent*);
   void          onFocusIn (FFocusEvent*);
   void          onFocusOut (FFocusEvent*);

 protected:
   // Accessor
   uChar         getHotkey();
   FButtonGroup* getGroup() const;

   // Mutator
   void          setHotkeyAccelerator();

   // Inquiries
   bool          isRadioButton() const;
   bool          isCheckboxButton() const;
   bool          hasGroup() const;

   // Methods
   virtual void  draw();
   void          drawLabel();
   void          processClick();
   void          processToggle();

   // Event handler
   virtual void onKeyPress (FKeyEvent*);

   // Data Members
   bool          checked;
   int           label_offset_pos;
   int           button_width;  // plus margin spaces

 private:
   // Disable copy constructor
   FToggleButton (const FToggleButton&);

   // Disable assignment operator (=)
   FToggleButton& operator = (const FToggleButton&);

   // Mutator
   void          setGroup (FButtonGroup*);

   // Methods
   void          init();

   // Friend classes
   friend class FButtonGroup;

   // Data Members
   FButtonGroup* button_group;
   bool          focus_inside_group;
   FString       text;
};
#pragma pack(pop)


// FRadioButton inline functions
//----------------------------------------------------------------------
inline const char* FToggleButton::getClassName() const
{ return "FToggleButton"; }

//----------------------------------------------------------------------
inline FString& FToggleButton::getText()
{ return text; }

//----------------------------------------------------------------------
inline bool FToggleButton::setNoUnderline()
{ return setNoUnderline(true); }

//----------------------------------------------------------------------
inline bool FToggleButton::unsetNoUnderline()
{ return setNoUnderline(false); }

//----------------------------------------------------------------------
inline bool FToggleButton::setEnable()
{ return setEnable(true); }

//----------------------------------------------------------------------
inline bool FToggleButton::unsetEnable()
{ return setEnable(false); }

//----------------------------------------------------------------------
inline bool FToggleButton::setDisable()
{ return setEnable(false); }

//----------------------------------------------------------------------
inline bool FToggleButton::setFocus()
{ return setFocus(true); }

//----------------------------------------------------------------------
inline bool FToggleButton::unsetFocus()
{ return setFocus(false); }

//----------------------------------------------------------------------
inline bool FToggleButton::setChecked()
{ return setChecked(true); }

//----------------------------------------------------------------------
inline bool FToggleButton::unsetChecked()
{ return setChecked(false); }

//----------------------------------------------------------------------
inline bool FToggleButton::isChecked()
{ return checked; }

//----------------------------------------------------------------------
inline FButtonGroup* FToggleButton::getGroup() const
{ return button_group; }

//----------------------------------------------------------------------
inline bool FToggleButton::hasGroup() const
{ return button_group; }

#endif  // _FTOGGLEBUTTON_H