xinyangli
2824efad33
NJU-ProjectN/nemu eb63cf3568dbf4e0c3c6ef462e6ec685550fabbc Merge pull request #76 from rijuyuezhu/master
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* yesno.c -- implements the yes/no box
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*
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* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
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*/
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#include "dialog.h"
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/*
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* Display termination buttons
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*/
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static void print_buttons(WINDOW * dialog, int height, int width, int selected)
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{
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int x = width / 2 - 10;
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int y = height - 2;
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print_button(dialog, " Yes ", y, x, selected == 0);
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print_button(dialog, " No ", y, x + 13, selected == 1);
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wmove(dialog, y, x + 1 + 13 * selected);
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wrefresh(dialog);
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}
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/*
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* Display a dialog box with two buttons - Yes and No
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*/
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int dialog_yesno(const char *title, const char *prompt, int height, int width)
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{
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int i, x, y, key = 0, button = 0;
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WINDOW *dialog;
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do_resize:
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if (getmaxy(stdscr) < (height + YESNO_HEIGTH_MIN))
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return -ERRDISPLAYTOOSMALL;
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if (getmaxx(stdscr) < (width + YESNO_WIDTH_MIN))
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return -ERRDISPLAYTOOSMALL;
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/* center dialog box on screen */
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x = (getmaxx(stdscr) - width) / 2;
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y = (getmaxy(stdscr) - height) / 2;
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draw_shadow(stdscr, y, x, height, width);
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dialog = newwin(height, width, y, x);
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keypad(dialog, TRUE);
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draw_box(dialog, 0, 0, height, width,
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dlg.dialog.atr, dlg.border.atr);
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wattrset(dialog, dlg.border.atr);
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mvwaddch(dialog, height - 3, 0, ACS_LTEE);
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for (i = 0; i < width - 2; i++)
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waddch(dialog, ACS_HLINE);
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wattrset(dialog, dlg.dialog.atr);
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waddch(dialog, ACS_RTEE);
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print_title(dialog, title, width);
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wattrset(dialog, dlg.dialog.atr);
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print_autowrap(dialog, prompt, width - 2, 1, 3);
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print_buttons(dialog, height, width, 0);
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while (key != KEY_ESC) {
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key = wgetch(dialog);
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switch (key) {
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case 'Y':
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case 'y':
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delwin(dialog);
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return 0;
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case 'N':
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case 'n':
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delwin(dialog);
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return 1;
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case TAB:
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case KEY_LEFT:
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case KEY_RIGHT:
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button = ((key == KEY_LEFT ? --button : ++button) < 0) ? 1 : (button > 1 ? 0 : button);
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print_buttons(dialog, height, width, button);
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wrefresh(dialog);
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break;
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case ' ':
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case '\n':
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delwin(dialog);
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return button;
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case KEY_ESC:
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key = on_key_esc(dialog);
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break;
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case KEY_RESIZE:
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delwin(dialog);
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on_key_resize();
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goto do_resize;
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}
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}
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delwin(dialog);
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return key; /* ESC pressed */
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}
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