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yesno.c 3.0 KB

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  1. /*
  2. * yesno.c -- implements the yes/no box
  3. *
  4. * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
  5. * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
  6. *
  7. * This program is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License
  9. * as published by the Free Software Foundation; either version 2
  10. * of the License, or (at your option) any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20. */
  21. #include "dialog.h"
  22. /*
  23. * Display termination buttons
  24. */
  25. static void
  26. print_buttons(WINDOW *dialog, int height, int width, int selected)
  27. {
  28. int x = width / 2 - 10;
  29. int y = height - 2;
  30. print_button (dialog, " Yes ", y, x, selected == 0);
  31. print_button (dialog, " No ", y, x + 13, selected == 1);
  32. wmove(dialog, y, x+1 + 13*selected );
  33. wrefresh (dialog);
  34. }
  35. /*
  36. * Display a dialog box with two buttons - Yes and No
  37. */
  38. int
  39. dialog_yesno (const char *title, const char *prompt, int height, int width)
  40. {
  41. int i, x, y, key = 0, button = 0;
  42. WINDOW *dialog;
  43. /* center dialog box on screen */
  44. x = (COLS - width) / 2;
  45. y = (LINES - height) / 2;
  46. draw_shadow (stdscr, y, x, height, width);
  47. dialog = newwin (height, width, y, x);
  48. keypad (dialog, TRUE);
  49. draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
  50. wattrset (dialog, border_attr);
  51. mvwaddch (dialog, height-3, 0, ACS_LTEE);
  52. for (i = 0; i < width - 2; i++)
  53. waddch (dialog, ACS_HLINE);
  54. wattrset (dialog, dialog_attr);
  55. waddch (dialog, ACS_RTEE);
  56. if (title != NULL && strlen(title) >= width-2 ) {
  57. /* truncate long title -- mec */
  58. char * title2 = malloc(width-2+1);
  59. memcpy( title2, title, width-2 );
  60. title2[width-2] = '\0';
  61. title = title2;
  62. }
  63. if (title != NULL) {
  64. wattrset (dialog, title_attr);
  65. mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
  66. waddstr (dialog, (char *)title);
  67. waddch (dialog, ' ');
  68. }
  69. wattrset (dialog, dialog_attr);
  70. print_autowrap (dialog, prompt, width - 2, 1, 3);
  71. print_buttons(dialog, height, width, 0);
  72. while (key != ESC) {
  73. key = wgetch (dialog);
  74. switch (key) {
  75. case 'Y':
  76. case 'y':
  77. delwin (dialog);
  78. return 0;
  79. case 'N':
  80. case 'n':
  81. delwin (dialog);
  82. return 1;
  83. case TAB:
  84. case KEY_LEFT:
  85. case KEY_RIGHT:
  86. button = ((key == KEY_LEFT ? --button : ++button) < 0)
  87. ? 1 : (button > 1 ? 0 : button);
  88. print_buttons(dialog, height, width, button);
  89. wrefresh (dialog);
  90. break;
  91. case ' ':
  92. case '\n':
  93. delwin (dialog);
  94. return button;
  95. case ESC:
  96. break;
  97. }
  98. }
  99. delwin (dialog);
  100. return -1; /* ESC pressed */
  101. }