menuengine.c

   1
   2 #include "cache.h"
   3 #include "menuengine.h"
   4
   5 struct menu_item *active_menu;
   6 unsigned int next_active_item;
   7
   8 void reset_active_menu()
   9 {
  10         if (active_menu) {
  11                 do {
  12                         struct menu_item item;
  13                         next_active_item--;
  14
  15                         item = active_menu[next_active_item];
  16                         if (MENU_ITEM_CLEANUP == item.selection) {
  17                                 if (item.string)
  18                                         free(item.string);
  19                                 if (item.helptext)
  20                                         free(item.helptext);
  21                         }
  22
  23                 } while (next_active_item);
  24
  25                 free(active_menu);
  26         }
  27
  28         active_menu = 0;
  29         next_active_item = 0;
  30 }
  31
  32 void append_active_menu(const struct menu_item item)
  33 {
  34         active_menu = realloc(active_menu,
  35                 (next_active_item + 1) * sizeof(struct menu_item));
  36         active_menu[next_active_item] = item;
  37         next_active_item++;
  38 }
  39
  40 void build_menu_items(struct git_data *data,
  41                       selection_to_mask *mask_builder,
  42                       const struct menu_item menu_def[],
  43                       const unsigned int menu_def_count,
  44                       void *platform)
  45 {
  46         unsigned int i = 0;
  47         const unsigned int selection = mask_builder(data);
  48
  49         reset_active_menu();
  50
  51         if (MENU_ITEM_LAST == selection)
  52                 return;
  53
  54         for (i = 0;
  55              i < menu_def_count && MENU_ITEM_LAST != menu_def[i].selection;
  56              i++)
  57                 if ((menu_def[i].selection & selection) ==
  58                                 menu_def[i].selection) {
  59                         if (menu_def[i].builder(data, &menu_def[i], platform))
  60                                 append_active_menu(menu_def[i]);
  61                 }
  62 }
  63
  64 char *get_menu_item_text(unsigned int id)
  65 {
  66         if (id > next_active_item)
  67                 return NULL;
  68
  69         return active_menu[id].helptext;
  70 }
  71
  72 void handle_menu_item(void *data, unsigned int id)
  73 {
  74         if (id > next_active_item)
  75                 return;
  76
  77         (active_menu[id].handler)(data, id);
  78 }