64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/menu_viewer.h>
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#include <grub/menu.h>
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/* The list of menu viewers. */
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static grub_menu_viewer_t menu_viewer_list;
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void
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grub_menu_viewer_register (grub_menu_viewer_t viewer)
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{
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viewer->next = menu_viewer_list;
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menu_viewer_list = viewer;
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}
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static grub_menu_viewer_t get_current_menu_viewer (void)
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{
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const char *selected_name = grub_env_get ("menuviewer");
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/* If none selected, pick the last registered one. */
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if (selected_name == 0)
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return menu_viewer_list;
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grub_menu_viewer_t cur;
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for (cur = menu_viewer_list; cur; cur = cur->next)
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{
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if (grub_strcmp (cur->name, selected_name) == 0)
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return cur;
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}
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/* Fall back to the first entry (or null). */
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return menu_viewer_list;
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}
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grub_err_t
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grub_menu_viewer_show_menu (grub_menu_t menu, int nested)
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{
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grub_menu_viewer_t cur = get_current_menu_viewer ();
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if (!cur)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "No menu viewer available.");
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return cur->show_menu (menu, nested);
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}
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