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 // * this is for making emacs happy: -*-Mode: C++;-*-
 // vile:cppmode
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 /****************************************************************************
  *   Author: Juergen Pfeifer, 1997                                          *
  ****************************************************************************/
 
 // $Id: cursslk.h,v 1.19 2021/04/17 18:11:08 tom Exp $
 
 #ifndef NCURSES_CURSSLK_H_incl
 #define NCURSES_CURSSLK_H_incl
 
 #include <ncursesw/cursesw.h>
 
 class NCURSES_CXX_IMPEXP Soft_Label_Key_Set {
 public:
   // This inner class represents the attributes of a Soft Label Key (SLK)
   class NCURSES_CXX_IMPEXP Soft_Label_Key {
     friend class Soft_Label_Key_Set;
   public:
     typedef enum { Left=0, Center=1, Right=2 } Justification;
 
   private:
     char *label;           // The Text of the Label
     Justification format;  // The Justification
     int num;               // The number of the Label
 
     Soft_Label_Key() : label(NULL), format(Left), num(-1) {
     }
 
     virtual ~Soft_Label_Key() {
       delete[] label;
     };
 
   public:
     // Set the text of the Label
     Soft_Label_Key& operator=(char *text);
 
     // Set the Justification of the Label
     Soft_Label_Key& operator=(Justification just) {
       format = just;
       return *this;
     }
 
     // Retrieve the text of the label
     inline char* operator()(void) const {
       return label;
     }
 
     Soft_Label_Key& operator=(const Soft_Label_Key& rhs)
     {
       if (this != &rhs) {
         *this = rhs;
       }
       return *this;
     }
 
     Soft_Label_Key(const Soft_Label_Key& rhs)
       : label(NULL),
         format(rhs.format),
         num(rhs.num)
     {
       *this = rhs.label;
     }
   };
 
 public:
   typedef enum {
     None                = -1,
     Three_Two_Three     = 0,
     Four_Four           = 1,
     PC_Style            = 2,
     PC_Style_With_Index = 3
   } Label_Layout;
 
 private:
   static long count;               // Number of Key Sets
   static Label_Layout  format;     // Layout of the Key Sets
   static int  num_labels;          // Number Of Labels in Key Sets
   bool b_attrInit;                 // Are attributes initialized
 
   Soft_Label_Key *slk_array;       // The array of SLK's
 
   // Init the Key Set
   void init();
 
   // Activate or Deactivate Label# i, Label counting starts with 1!
   void activate_label(int i, bool bf=TRUE);
 
   // Activate of Deactivate all Labels
   void activate_labels(bool bf);
 
 protected:
   inline void Error (const char* msg) const THROWS(NCursesException) {
     THROW(new NCursesException (msg));
   }
 
   // Remove SLK's from screen
   void clear() {
     if (ERR==::slk_clear())
       Error("slk_clear");
   }
 
   // Restore them
   void restore() {
     if (ERR==::slk_restore())
       Error("slk_restore");
   }
 
 public:
 
   // Construct a Key Set, use the most comfortable layout as default.
   // You must create a Soft_Label_Key_Set before you create any object of
   // the NCursesWindow, NCursesPanel or derived classes. (Actually before
   // ::initscr() is called).
   explicit Soft_Label_Key_Set(Label_Layout fmt);
 
   // This constructor assumes, that you already constructed a Key Set
   // with a layout by the constructor above. This layout will be reused.
   Soft_Label_Key_Set();
 
   Soft_Label_Key_Set& operator=(const Soft_Label_Key_Set& rhs)
   {
     if (this != &rhs) {
       *this = rhs;
       init();       // allocate a new slk_array[]
     }
     return *this;
   }
 
   Soft_Label_Key_Set(const Soft_Label_Key_Set& rhs)
     : b_attrInit(rhs.b_attrInit),
       slk_array(NULL)
   {
     init();     // allocate a new slk_array[]
   }
 
   virtual ~Soft_Label_Key_Set() THROWS(NCursesException);
 
   // Get Label# i. Label counting starts with 1!
   Soft_Label_Key& operator[](int i);
 
   // Retrieve number of Labels
   int labels() const;
 
   // Refresh the SLK portion of the screen
   inline void refresh() {
     if (ERR==::slk_refresh())
       Error("slk_refresh");
   }
 
   // Mark the SLK portion of the screen for refresh, defer actual refresh
   // until next update call.
   inline void noutrefresh() {
     if (ERR==::slk_noutrefresh())
       Error("slk_noutrefresh");
   }
 
   // Mark the whole SLK portion of the screen as modified
   inline void touch() {
     if (ERR==::slk_touch())
       Error("slk_touch");
   }
 
   // Activate Label# i
   inline void show(int i) {
     activate_label(i,FALSE);
     activate_label(i,TRUE);
   }
 
   // Hide Label# i
   inline void hide(int i) {
     activate_label(i,FALSE);
   }
 
   // Show all Labels
   inline void show() {
     activate_labels(FALSE);
     activate_labels(TRUE);
   }
 
   // Hide all Labels
   inline void hide() {
     activate_labels(FALSE);
   }
 
   inline void attron(attr_t attrs) {
     if (ERR==::slk_attron(attrs))
       Error("slk_attron");
   }
 
   inline void attroff(attr_t attrs) {
     if (ERR==::slk_attroff(attrs))
       Error("slk_attroff");
   }
 
   inline void attrset(attr_t attrs) {
     if (ERR==::slk_attrset(attrs))
       Error("slk_attrset");
   }
 
   inline void color(short color_pair_number) {
     if (ERR==::slk_color(color_pair_number))
       Error("slk_color");
   }
 
   inline attr_t attr() const {
     return ::slk_attr();
   }
 };
 
 #endif /* NCURSES_CURSSLK_H_incl */

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