747 lines
17 KiB
C
747 lines
17 KiB
C
/* $NetBSD: menu.c,v 1.16 2003/03/09 01:08:48 lukem Exp $ */
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/*-
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* Copyright (c) 1998-1999 Brett Lymn (blymn@baea.com.au, brett_lymn@yahoo.com.au)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: menu.c,v 1.16 2003/03/09 01:08:48 lukem Exp $");
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#include <ctype.h>
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#include <menu.h>
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#include <string.h>
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#include <stdlib.h>
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#include "internals.h"
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MENU _menui_default_menu = {
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16, /* number of item rows that will fit in window */
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1, /* number of columns of items that will fit in window */
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0, /* number of rows of items we have */
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0, /* number of columns of items we have */
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0, /* current cursor row */
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0, /* current cursor column */
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{NULL, 0}, /* mark string */
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{NULL, 0}, /* unmark string */
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O_ONEVALUE, /* menu options */
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NULL, /* the pattern buffer */
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0, /* length of pattern buffer */
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0, /* the length of matched buffer */
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0, /* is the menu posted? */
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A_REVERSE, /* menu foreground */
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A_NORMAL, /* menu background */
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A_UNDERLINE, /* unselectable menu item */
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' ', /* filler between name and description */
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NULL, /* user defined pointer */
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0, /* top row of menu */
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0, /* widest item in the menu */
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0, /* the width of a menu column */
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0, /* number of items attached to the menu */
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NULL, /* items in the menu */
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0, /* current menu item */
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0, /* currently in a hook function */
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NULL, /* function called when menu posted */
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NULL, /* function called when menu is unposted */
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NULL, /* function called when current item changes */
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NULL, /* function called when current item changes */
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NULL, /* the menu window */
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NULL, /* the menu subwindow */
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NULL, /* the window to write to */
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};
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/*
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* Set the menu mark character
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*/
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int
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set_menu_mark(MENU *m, char *mark)
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{
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MENU *menu = m;
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if (m == NULL) menu = &_menui_default_menu;
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/* if there was an old mark string, free it first */
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if (menu->mark.string != NULL) free(menu->mark.string);
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if ((menu->mark.string = (char *) malloc(strlen(mark) + 1)) == NULL)
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return E_SYSTEM_ERROR;
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strcpy(menu->mark.string, mark);
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menu->mark.length = strlen(mark);
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/* max item size may have changed - recalculate. */
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_menui_max_item_size(menu);
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return E_OK;
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}
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/*
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* Return the menu mark string for the menu.
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*/
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char *
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menu_mark(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.mark.string;
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else
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return menu->mark.string;
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}
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/*
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* Set the menu unmark character
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*/
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int
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set_menu_unmark(MENU *m, char *mark)
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{
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MENU *menu = m;
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if (m == NULL) menu = &_menui_default_menu;
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/* if there was an old mark string, free it first */
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if (menu->unmark.string != NULL) free(menu->unmark.string);
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if ((menu->unmark.string = (char *) malloc(strlen(mark) + 1)) == NULL)
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return E_SYSTEM_ERROR;
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strcpy(menu->unmark.string, mark);
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menu->unmark.length = strlen(mark);
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/* max item size may have changed - recalculate. */
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_menui_max_item_size(menu);
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return E_OK;
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}
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/*
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* Return the menu unmark string for the menu.
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*/
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char *
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menu_unmark(menu)
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MENU *menu;
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{
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if (menu == NULL)
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return _menui_default_menu.unmark.string;
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else
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return menu->unmark.string;
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}
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/*
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* Set the menu window to the window passed.
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*/
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int
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set_menu_win(MENU *menu, WINDOW *win)
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{
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if (menu == NULL) {
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_menui_default_menu.menu_win = win;
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_menui_default_menu.scrwin = win;
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} else {
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if (menu->posted == TRUE) {
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return E_POSTED;
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} else {
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menu->menu_win = win;
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menu->scrwin = win;
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}
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}
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return E_OK;
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}
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/*
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* Return the pointer to the menu window
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*/
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WINDOW *
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menu_win(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.menu_win;
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else
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return menu->menu_win;
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}
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/*
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* Set the menu subwindow for the menu.
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*/
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int
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set_menu_sub(menu, sub)
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MENU *menu;
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WINDOW *sub;
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{
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if (menu == NULL) {
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_menui_default_menu.menu_subwin = sub;
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_menui_default_menu.scrwin = sub;
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} else {
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if (menu->posted == TRUE)
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return E_POSTED;
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menu->menu_subwin = sub;
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menu->scrwin = sub;
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}
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return E_OK;
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}
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/*
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* Return the subwindow pointer for the menu
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*/
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WINDOW *
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menu_sub(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.menu_subwin;
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else
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return menu->menu_subwin;
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}
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/*
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* Set the maximum number of rows and columns of items that may be displayed.
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*/
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int
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set_menu_format(MENU *param_menu, int rows, int cols)
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{
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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menu->rows = rows;
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menu->cols = cols;
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if (menu->items != NULL)
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/* recalculate the item neighbours */
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return _menui_stitch_items(menu);
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return E_OK;
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}
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/*
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* Return the max number of rows and cols that may be displayed.
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*/
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void
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menu_format(MENU *param_menu, int *rows, int *cols)
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{
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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*rows = menu->rows;
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*cols = menu->cols;
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}
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/*
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* Set the user defined function to call when a menu is posted.
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*/
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int
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set_menu_init(MENU *menu, Menu_Hook func)
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{
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if (menu == NULL)
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_menui_default_menu.menu_init = func;
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else
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menu->menu_init = func;
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return E_OK;
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}
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/*
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* Return the pointer to the menu init function.
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*/
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Menu_Hook
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menu_init(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.menu_init;
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else
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return menu->menu_init;
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}
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/*
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* Set the user defined function called when a menu is unposted.
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*/
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int
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set_menu_term(MENU *menu, Menu_Hook func)
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{
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if (menu == NULL)
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_menui_default_menu.menu_term = func;
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else
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menu->menu_term = func;
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return E_OK;
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}
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/*
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* Return the user defined menu termination function pointer.
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*/
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Menu_Hook
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menu_term(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.menu_term;
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else
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return menu->menu_term;
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}
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/*
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* Return the current menu options set.
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*/
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OPTIONS
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menu_opts(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.opts;
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else
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return menu->opts;
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}
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/*
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* Set the menu options to the given options.
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*/
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int
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set_menu_opts(MENU *param_menu, OPTIONS opts)
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{
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int i, seen;
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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OPTIONS old_opts = menu->opts;
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menu->opts = opts;
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/*
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* If the radio option is selected then make sure only one
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* item is actually selected in the items.
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*/
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if (((opts & O_RADIO) == O_RADIO) && (menu->items != NULL) &&
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(menu->items[0] != NULL)) {
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seen = 0;
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for (i = 0; i < menu->item_count; i++) {
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if (menu->items[i]->selected == 1) {
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if (seen == 0) {
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seen = 1;
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} else {
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menu->items[i]->selected = 0;
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}
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}
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}
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/* if none selected, select the first item */
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if (seen == 0)
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menu->items[0]->selected = 1;
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}
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if ((menu->opts & O_ROWMAJOR) != (old_opts & O_ROWMAJOR))
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/* changed menu layout - need to recalc neighbours */
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_menui_stitch_items(menu);
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return E_OK;
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}
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/*
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* Turn on the options in menu given by opts.
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*/
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int
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menu_opts_on(MENU *param_menu, OPTIONS opts)
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{
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int i, seen;
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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OPTIONS old_opts = menu->opts;
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menu->opts |= opts;
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/*
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* If the radio option is selected then make sure only one
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* item is actually selected in the items.
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*/
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if (((opts & O_RADIO) == O_RADIO) && (menu->items != NULL) &&
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(menu->items[0] != NULL)) {
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seen = 0;
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for (i = 0; i < menu->item_count; i++) {
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if (menu->items[i]->selected == 1) {
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if (seen == 0) {
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seen = 1;
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} else {
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menu->items[i]->selected = 0;
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}
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}
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}
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/* if none selected then select the top item */
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if (seen == 0)
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menu->items[0]->selected = 1;
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}
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if ((menu->items != NULL) &&
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(menu->opts & O_ROWMAJOR) != (old_opts & O_ROWMAJOR))
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/* changed menu layout - need to recalc neighbours */
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_menui_stitch_items(menu);
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return E_OK;
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}
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/*
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* Turn off the menu options given in opts.
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*/
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int
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menu_opts_off(MENU *param_menu, OPTIONS opts)
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{
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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OPTIONS old_opts = menu->opts;
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menu->opts &= ~(opts);
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if ((menu->items != NULL ) &&
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(menu->opts & O_ROWMAJOR) != (old_opts & O_ROWMAJOR))
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/* changed menu layout - need to recalc neighbours */
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_menui_stitch_items(menu);
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return E_OK;
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}
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/*
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* Return the menu pattern buffer.
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*/
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char *
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menu_pattern(MENU *menu)
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{
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if (menu == NULL)
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return _menui_default_menu.pattern;
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else
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return menu->pattern;
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}
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/*
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* Set the menu pattern buffer to pat and attempt to match the pattern in
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* the item list.
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*/
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int
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set_menu_pattern(MENU *param_menu, char *pat)
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{
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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char *p = pat;
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/* check pattern is all printable characters */
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while (*p)
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if (!isprint((unsigned char) *p++)) return E_BAD_ARGUMENT;
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if ((menu->pattern = (char *) realloc(menu->pattern,
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sizeof(char) * strlen(pat) + 1)) == NULL)
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return E_SYSTEM_ERROR;
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strcpy(menu->pattern, pat);
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menu->plen = strlen(pat);
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/* search item list for pat here */
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return _menui_match_items(menu, MATCH_FORWARD, &menu->cur_item);
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}
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/*
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* Allocate a new menu structure and fill it in.
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*/
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MENU *
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new_menu(ITEM **items)
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{
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MENU *the_menu;
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if ((the_menu = (MENU *)malloc(sizeof(MENU))) == NULL)
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return NULL;
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/* copy the defaults */
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(void)memcpy(the_menu, &_menui_default_menu, sizeof(MENU));
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/* set a default window if none already set. */
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if (the_menu->menu_win == NULL)
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the_menu->scrwin = stdscr;
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/* make a private copy of the mark string */
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if (_menui_default_menu.mark.string != NULL) {
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if ((the_menu->mark.string =
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(char *) malloc((unsigned) _menui_default_menu.mark.length + 1))
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== NULL) {
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free(the_menu);
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return NULL;
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}
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strlcpy(the_menu->mark.string, _menui_default_menu.mark.string,
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(unsigned) _menui_default_menu.mark.length + 1);
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}
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/* make a private copy of the unmark string too */
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if (_menui_default_menu.unmark.string != NULL) {
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if ((the_menu->unmark.string =
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(char *) malloc((unsigned) _menui_default_menu.unmark.length + 1))
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== NULL) {
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free(the_menu);
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return NULL;
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}
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strlcpy(the_menu->unmark.string,
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_menui_default_menu.unmark.string,
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(unsigned) _menui_default_menu.unmark.length+ 1 );
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}
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/* now attach the items, if any */
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if (items != NULL) {
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if(set_menu_items(the_menu, items) < 0) {
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if (the_menu->mark.string != NULL)
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free(the_menu->mark.string);
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if (the_menu->unmark.string != NULL)
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free(the_menu->unmark.string);
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free(the_menu);
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return NULL;
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}
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}
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return the_menu;
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}
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/*
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* Free up storage allocated to the menu object and destroy it.
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*/
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int
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free_menu(MENU *menu)
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{
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int i;
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if (menu == NULL)
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return E_BAD_ARGUMENT;
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if (menu->posted != 0)
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return E_POSTED;
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if (menu->pattern != NULL)
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free(menu->pattern);
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if (menu->mark.string != NULL)
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free(menu->mark.string);
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if (menu->items != NULL) {
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/* disconnect the items from this menu */
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for (i = 0; i < menu->item_count; i++) {
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menu->items[i]->parent = NULL;
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}
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}
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free(menu);
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return E_OK;
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}
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/*
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* Calculate the minimum window size for the menu.
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*/
|
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int
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scale_menu(MENU *param_menu, int *rows, int *cols)
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{
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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if (menu->items == NULL)
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return E_BAD_ARGUMENT;
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/* calculate the max item size */
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_menui_max_item_size(menu);
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*rows = menu->rows;
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*cols = menu->cols * menu->max_item_width;
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/*
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* allow for spacing between columns...
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*/
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*cols += (menu->cols - 1);
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return E_OK;
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}
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|
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/*
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* Set the menu item list to the one given.
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*/
|
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int
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set_menu_items(MENU *param_menu, ITEM **items)
|
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{
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MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
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int i, new_count = 0, sel_count = 0;
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/* don't change if menu is posted */
|
|
if (menu->posted == 1)
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return E_POSTED;
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/* count the new items and validate none are connected already */
|
|
while (items[new_count] != NULL) {
|
|
if ((items[new_count]->parent != NULL) &&
|
|
(items[new_count]->parent != menu))
|
|
return E_CONNECTED;
|
|
if (items[new_count]->selected == 1)
|
|
sel_count++;
|
|
new_count++;
|
|
}
|
|
|
|
/*
|
|
* don't allow multiple selected items if menu is radio
|
|
* button style.
|
|
*/
|
|
if (((menu->opts & O_RADIO) == O_RADIO) &&
|
|
(sel_count > 1))
|
|
return E_BAD_ARGUMENT;
|
|
|
|
/* if there were items connected then disconnect them. */
|
|
if (menu->items != NULL) {
|
|
for (i = 0; i < menu->item_count; i++) {
|
|
menu->items[i]->parent = NULL;
|
|
menu->items[i]->index = -1;
|
|
}
|
|
}
|
|
|
|
menu->item_count = new_count;
|
|
|
|
/* connect the new items to the menu */
|
|
for (i = 0; i < new_count; i++) {
|
|
items[i]->parent = menu;
|
|
items[i]->index = i;
|
|
}
|
|
|
|
menu->items = items;
|
|
menu->cur_item = 0; /* reset current item just in case */
|
|
menu->top_row = 0; /* and the top row too */
|
|
if (menu->pattern != NULL) { /* and the pattern buffer....sigh */
|
|
free(menu->pattern);
|
|
menu->plen = 0;
|
|
menu->match_len = 0;
|
|
}
|
|
|
|
/*
|
|
* make sure at least one item is selected on a radio
|
|
* button style menu.
|
|
*/
|
|
if (((menu->opts & O_RADIO) == O_RADIO) && (sel_count == 0))
|
|
menu->items[0]->selected = 1;
|
|
|
|
|
|
_menui_stitch_items(menu); /* recalculate the item neighbours */
|
|
|
|
return E_OK;
|
|
}
|
|
|
|
/*
|
|
* Return the pointer to the menu items array.
|
|
*/
|
|
ITEM **
|
|
menu_items(MENU *menu)
|
|
{
|
|
if (menu == NULL)
|
|
return _menui_default_menu.items;
|
|
else
|
|
return menu->items;
|
|
}
|
|
|
|
/*
|
|
* Return the count of items connected to the menu
|
|
*/
|
|
int
|
|
item_count(MENU *menu)
|
|
{
|
|
if (menu == NULL)
|
|
return _menui_default_menu.item_count;
|
|
else
|
|
return menu->item_count;
|
|
}
|
|
|
|
/*
|
|
* Set the menu top row to be the given row. The current item becomes the
|
|
* leftmost item on that row in the menu.
|
|
*/
|
|
int
|
|
set_top_row(MENU *param_menu, int row)
|
|
{
|
|
MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
|
|
int i, cur_item, state = E_SYSTEM_ERROR;
|
|
|
|
if (row > menu->item_rows)
|
|
return E_BAD_ARGUMENT;
|
|
|
|
if (menu->items == NULL)
|
|
return E_NOT_CONNECTED;
|
|
|
|
if (menu->in_init == 1)
|
|
return E_BAD_STATE;
|
|
|
|
cur_item = 0;
|
|
|
|
for (i = 0; i < menu->item_count; i++) {
|
|
/* search for first item that matches row - this will be
|
|
the current item. */
|
|
if (row == menu->items[i]->row) {
|
|
cur_item = i;
|
|
state = E_OK;
|
|
break; /* found what we want - no need to go further */
|
|
}
|
|
}
|
|
|
|
menu->in_init = 1; /* just in case we call the init/term routines */
|
|
|
|
if (menu->posted == 1) {
|
|
if (menu->menu_term != NULL)
|
|
menu->menu_term(menu);
|
|
if (menu->item_term != NULL)
|
|
menu->item_term(menu);
|
|
}
|
|
|
|
menu->cur_item = cur_item;
|
|
menu->top_row = row;
|
|
|
|
if (menu->posted == 1) {
|
|
if (menu->menu_init != NULL)
|
|
menu->menu_init(menu);
|
|
if (menu->item_init != NULL)
|
|
menu->item_init(menu);
|
|
}
|
|
|
|
menu->in_init = 0;
|
|
|
|
/* this should always be E_OK unless we are really screwed up */
|
|
return state;
|
|
}
|
|
|
|
/*
|
|
* Return the current top row number.
|
|
*/
|
|
int
|
|
top_row(MENU *param_menu)
|
|
{
|
|
MENU *menu = (param_menu != NULL) ? param_menu : &_menui_default_menu;
|
|
|
|
if (menu->items == NULL)
|
|
return E_NOT_CONNECTED;
|
|
|
|
return menu->top_row;
|
|
}
|
|
|
|
/*
|
|
* Position the cursor at the correct place in the menu.
|
|
*
|
|
*/
|
|
int
|
|
pos_menu_cursor(MENU *menu)
|
|
{
|
|
int movx, maxmark;
|
|
|
|
if (menu == NULL)
|
|
return E_BAD_ARGUMENT;
|
|
|
|
maxmark = max(menu->mark.length, menu->unmark.length);
|
|
movx = maxmark + (menu->items[menu->cur_item]->col
|
|
* (menu->col_width + 1));
|
|
|
|
if (menu->match_len > 0)
|
|
movx += menu->match_len - 1;
|
|
|
|
wmove(menu->scrwin,
|
|
menu->items[menu->cur_item]->row - menu->top_row, movx);
|
|
|
|
return E_OK;
|
|
}
|