gnu/lib/libdialog/ui_objects.h

   1 /*
   2  * Author: Marc van Kempen
   3  * Desc:   include file for UI-objects
   4  *
   5  * Copyright (c) 1995, Marc van Kempen
   6  *
   7  * All rights reserved.
   8  *
   9  * This software may be used, modified, copied, distributed, and
  10  * sold, in both source and binary form provided that the above
  11  * copyright and these terms are retained, verbatim, as the first
  12  * lines of this file.  Under no circumstances is the author
  13  * responsible for the proper functioning of this software, nor does
  14  * the author assume any responsibility for damages incurred with
  15  * its use.
  16  *
  17  */
  18
  19 #include "dialog.h"
  20 #include <ncurses.h>
  21
  22 /***********************************************************************
  23  *
  24  * Defines
  25  *
  26  ***********************************************************************/
  27
  28 #define ctrl(a)         ((a) - 'a' + 1)
  29
  30 /* the Object types */
  31 #define STRINGOBJ       1
  32 #define LISTOBJ         2
  33 #define BUTTONOBJ       3
  34
  35 /* the return signals from the selection routines */
  36 /* 1000 and higher should avoid conflicts with keys pressed */
  37 #define SEL_CR          1001    /* return was pressed */
  38 #define SEL_ESC         1002    /* ESC pressed */
  39 #define SEL_TAB         1003    /* TAB pressed */
  40 #define SEL_BACKTAB     1004    /* SHIFT-TAB pressed */
  41 #define SEL_BUTTON      1005    /* a button was pressed */
  42
  43 /***********************************************************************
  44  *
  45  * Typedefs
  46  *
  47  ***********************************************************************/
  48
  49 typedef struct {
  50     WINDOW      *win;           /* the window it's contained in */
  51     char        *title;         /* the prompt for the input field */
  52     char        *s;             /* initial value of the input field */
  53     int         x, y, w, len;   /* the (y, x) position of the upperleft */
  54                                 /* corner and the width <w> of the display */
  55                                 /* and length <len> of the field */
  56     int         attr_mask;      /* special attributes */
  57 } StringObj;
  58
  59 typedef struct {
  60     WINDOW      *win;           /* the windows it's contained in */
  61     char        *title;         /* the title of the list */
  62     char        **name;         /* the names of the list */
  63     int         *seld;          /* the currently selected names */
  64     char        *elt;           /* the current element in the list list[sel] */
  65     int         x, y, w, h, n;  /* dimensions of list and # of elements (n) */
  66     int         scroll, sel;    /* current position in the list */
  67 } ListObj;
  68
  69 typedef struct {
  70     WINDOW      *win;           /* the window it's contained in */
  71     char        *title;         /* title for the button */
  72     int         x, y, w, h;     /* its dimensions */
  73     int         *pushed;        /* boolean that determines wether button was pushed */
  74 } ButtonObj;
  75
  76 typedef struct ComposeObj {
  77     int                 objtype;
  78     void                *obj;
  79     struct ComposeObj   *next, *prev;
  80 } ComposeObj;
  81
  82 /**********************************************************************
  83  *
  84  * Prototypes
  85  *
  86  **********************************************************************/
  87
  88 void            RefreshStringObj(StringObj *so);
  89 StringObj       *NewStringObj(WINDOW *win, char *title, char *s,
  90                               int y, int x, int w, int len);
  91 int             SelectStringObj(StringObj *so);
  92 void            DelStringObj(StringObj *so);
  93
  94 void            RefreshListObj(ListObj *lo);
  95 ListObj         *NewListObj(WINDOW *win, char *title, char **list,
  96                             char *listelt, int y, int x, int h, int w, int n);
  97 void            UpdateListObj(ListObj *lo, char **list, int n);
  98 int             SelectListObj(ListObj *lo);
  99 void            DelListObj(ListObj *obj);
 100 void            MarkCurrentListObj(ListObj *lo);
 101 void            MarkAllListObj(ListObj *lo);
 102 void            UnMarkAllListObj(ListObj *lo);
 103
 104 void            RefreshButtonObj(ButtonObj *bo);
 105 ButtonObj       *NewButtonObj(WINDOW *win, char *title, int *pushed,
 106                               int y, int x);
 107 int             SelectButtonObj(ButtonObj *bo);
 108 void            DelButtonObj(ButtonObj *bo);
 109 void            AddObj(ComposeObj **Obj, int objtype, void *obj);
 110 void            FreeObj(ComposeObj *Obj);
 111 int             ReadObj(ComposeObj *Obj);
 112 int             PollObj(ComposeObj **Obj);
 113 void            DelObj(ComposeObj *Obj);
 114