key.c

   1 /*
   2  * Copyright (C) 2008 Diego Hernan Borghetti.
   3  * Eco
   4  */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #include "term.h"
  10 #include "screen.h"
  11 #include "buffer.h"
  12 #include "view.h"
  13 #include "eco.h"
  14 #include "status.h"
  15 #include "key.h"
  16
  17
  18 /* key list. */
  19 E_Key *keys= NULL;
  20
  21 void e_key_free(void)
  22 {
  23         E_Key *p;
  24
  25         while (keys) {
  26                 p= keys->next;
  27                 free((void *)keys);
  28                 keys= p;
  29         }
  30 }
  31
  32 E_Key *__e_key_find(short code, short ctrl_x)
  33 {
  34         E_Key *p;
  35
  36         p= keys;
  37         while (p) {
  38                 if (p->code == code && p->ctrl_x == ctrl_x)
  39                         return(p);
  40                 p= p->next;
  41         }
  42         return(NULL);
  43 }
  44
  45 void e_key_add(short code, short ctrl_x, void (*cb)(E_Eco *))
  46 {
  47         E_Key *key= __e_key_find(code, ctrl_x);
  48
  49         if (key)
  50                 return;
  51
  52         key= (E_Key *)malloc(sizeof(E_Key));
  53         if (!key)
  54                 return;
  55
  56         key->next= keys;
  57         key->ctrl_x= ctrl_x;
  58         key->code= code;
  59         key->exec= cb;
  60         keys= key;
  61 }
  62
  63 void e_key_remove(short code, short ctrl_x)
  64 {
  65         E_Key *p, *p1;
  66
  67         p= keys;
  68         p1= NULL;
  69         while (p) {
  70                 if (p->code == code && p->ctrl_x == ctrl_x) {
  71                         if (p1)
  72                                 p1->next= p->next;
  73                         else
  74                                 keys= p->next;
  75
  76                         free((void *)p);
  77                         return;
  78                 }
  79                 p1= p;
  80                 p= p->next;
  81         }
  82 }
  83
  84 int e_key_exec(E_Eco *ec, short code, short ctrl_x)
  85 {
  86         E_Key *key;
  87
  88         key= __e_key_find(code, ctrl_x);
  89         if (key) {
  90                 (*key->exec) (ec);
  91                 return(0);
  92         }
  93         return(1);
  94 }