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Initial effort for gfxmenu on multiterm branch

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-12-26 01:49:57 +01:00
commit bee140683a
68 changed files with 5067 additions and 2577 deletions
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112
normal/menu_viewer.c
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB 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 Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/menu_viewer.h>
#include <grub/menu.h>
#include <grub/auth.h>
/* The list of menu viewers. */
static grub_menu_viewer_t menu_viewer_list;
static int should_return;
static int menu_viewer_changed;
void
grub_menu_viewer_register (grub_menu_viewer_t viewer)
{
viewer->next = menu_viewer_list;
menu_viewer_list = viewer;
}
static grub_menu_viewer_t get_current_menu_viewer (void)
{
const char *selected_name = grub_env_get ("menuviewer");
/* If none selected, pick the last registered one. */
if (selected_name == 0)
return menu_viewer_list;
grub_menu_viewer_t cur;
for (cur = menu_viewer_list; cur; cur = cur->next)
{
if (grub_strcmp (cur->name, selected_name) == 0)
return cur;
}
/* Fall back to the first entry (or null). */
return menu_viewer_list;
}
grub_err_t
grub_menu_viewer_show_menu (grub_menu_t menu, int nested)
{
grub_err_t err1, err2;
while (1)
{
grub_menu_viewer_t cur = get_current_menu_viewer ();
if (!cur)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "No menu viewer available.");
menu_viewer_changed = 0;
should_return = 0;
err1 = cur->show_menu (menu, nested);
grub_print_error ();
if (menu_viewer_changed)
continue;
err2 = grub_auth_check_authentication (NULL);
if (err2)
{
grub_print_error ();
grub_errno = GRUB_ERR_NONE;
continue;
}
break;
}
return err1;
}
int
grub_menu_viewer_should_return (void)
{
return should_return;
}
static char *
menuviewer_write_hook (struct grub_env_var *var __attribute__ ((unused)),
const char *val)
{
menu_viewer_changed = 1;
should_return = 1;
return grub_strdup (val);
}
void
grub_menu_viewer_init (void)
{
grub_register_variable_hook ("menuviewer", 0, menuviewer_write_hook);
}