RetroArch/menu/menu_setting.c

/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
 *  Copyright (C) 2011-2015 - Daniel De Matteis
 *
 *  RetroArch is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include "menu_setting.h"
#include "menu_entries.h"
#include "../retroarch.h"

int menu_setting_generic(rarch_setting_t *setting)
{
   if (!setting)
      return -1;

   if (setting->cmd_trigger.idx != EVENT_CMD_NONE)
      setting->cmd_trigger.triggered = true;

   if (setting->change_handler)
      setting->change_handler(setting);

   if (setting->flags & SD_FLAG_EXIT
         && setting->cmd_trigger.triggered)
   {
      setting->cmd_trigger.triggered = false;
      return -1;
   }

   return 0;
}

static int setting_handler(rarch_setting_t *setting, unsigned action)
{
   int ret = -1;
   if (!setting)
      return -1;

   switch (action)
   {
      case MENU_ACTION_UP:
      case MENU_ACTION_DOWN:
         if (setting->action_up_or_down)
         {
            setting->action_up_or_down(setting, action);
            ret = 0;
         }
         break;
      case MENU_ACTION_LEFT:
      case MENU_ACTION_RIGHT:
         if (setting->action_toggle)
         {
            setting->action_toggle(setting, action, true);
            ret = 0;
         }
         break;
      case MENU_ACTION_OK:
         if (setting->action_ok)
         {
            setting->action_ok(setting, action);
            ret = 0;
         }
         break;
      case MENU_ACTION_CANCEL:
         if (setting->action_cancel)
         {
            setting->action_cancel(setting, action);
            ret = 0;
         }
         break;
      case MENU_ACTION_START:
         if (setting->action_start)
         {
            setting->action_start(setting);
            ret = 0;
         }
         break;
   }

   return ret;
}

int menu_setting_handler(rarch_setting_t *setting, unsigned action)
{
   if (setting_handler(setting, action) == 0)
      return menu_setting_generic(setting);
   return -1;
}

static int menu_action_handle_setting(rarch_setting_t *setting,
      unsigned type, unsigned action, bool wraparound)
{
   menu_handle_t *menu = menu_driver_get_ptr();

   if (!setting)
      return -1;

   switch (setting->type)
   {
      case ST_PATH:
         if (action == MENU_ACTION_OK)
            menu_list_push_stack_refresh(
                  menu->menu_list,
                  setting->default_value.string,
                  setting->name,
                  type,
                  menu->navigation.selection_ptr);
         /* fall-through. */
      case ST_BOOL:
      case ST_INT:
      case ST_UINT:
      case ST_HEX:
      case ST_FLOAT:
      case ST_STRING:
      case ST_DIR:
      case ST_BIND:
      case ST_ACTION:
         return menu_setting_handler(setting, action);
      default:
         break;
   }

   return -1;
}

rarch_setting_t *menu_setting_find(const char *label)
{
   driver_t    *driver = driver_get_ptr();
   menu_handle_t *menu = menu_driver_get_ptr();

   if (!driver)
      return NULL;
   return (rarch_setting_t*)setting_find_setting(
         menu->list_settings, label);
}

int menu_setting_set(unsigned type, const char *label,
      unsigned action, bool wraparound)
{
   int ret                  = 0;
   rarch_setting_t *setting = NULL;
   driver_t *driver         = driver_get_ptr();
   menu_handle_t      *menu = menu_driver_get_ptr();

   if (!driver)
      return 0;
   
   setting = menu_setting_find(
         menu->menu_list->selection_buf->list
         [menu->navigation.selection_ptr].label);

   if (!setting)
      return 0;

   ret = menu_action_handle_setting(setting,
         type, action, wraparound);

   if (ret == -1)
      return 0;
   return ret;
}