Update dialog to version 20100428. This changes the license under which

dialog is distributed from GPLv2 to LGPLv2 and introduces a number of new features and a new and better libdialog API. The existing libdialog will be kept temporarily as libodialog for compatibility purposes until sade, sysinstall and tzsetup have been either updated or replaced. __FreeBSD_version is now 900030. Discussed on: -current Approved by: core Obtained from: http://invisible-island.net/dialog
author: nwhitehorn <nwhitehorn@FreeBSD.org> 2011-01-12 14:55:02 +0000
committer: nwhitehorn <nwhitehorn@FreeBSD.org> 2011-01-12 14:55:02 +0000
commit: 3d4e8889889e5e36302454225999f7e146d3219c (patch)
tree: fa315b999f531039df54ab7af8e99f7e8daad77c /gnu/lib/libodialog/menubox.c
parent: b905920a72950a63c9782b4911d252bfac08db6e (diff)
download: FreeBSD-src-3d4e8889889e5e36302454225999f7e146d3219c.zip
FreeBSD-src-3d4e8889889e5e36302454225999f7e146d3219c.tar.gz
1 files changed, 469 insertions, 0 deletions
diff --git a/gnu/lib/libodialog/menubox.c b/gnu/lib/libodialog/menubox.c
new file mode 100644
index 0000000..a01acd5
--- /dev/null
+++ b/gnu/lib/libodialog/menubox.c
@@ -0,0 +1,469 @@
+/*
+ *  menubox.c -- implements the menu box
+ *
+ *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *
+ *	Substantial rennovation:  12/18/95, Jordan K. Hubbard
+ *
+ *  This program 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 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <dialog.h>
+#include "dialog.priv.h"
+#include <err.h>
+#include <ncurses.h>
+
+static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int choice, int selected, dialogMenuItem *me, int menu_width, int tag_x, int item_x);
+
+#define DREF(di, item)		((di) ? &((di)[(item)]) : NULL)
+
+/*
+ * Display a menu for choosing among a number of options
+ */
+int
+dialog_menu(unsigned char *title, unsigned char *prompt, int height, int width, int menu_height, int cnt, void *it, unsigned char *result, int *ch, int *sc)
+{
+    int i, j, x, y, cur_x, cur_y, box_x, box_y, key = 0, button, choice,
+	l, k, scroll, max_choice, item_no, redraw_menu = FALSE;
+    char okButton, cancelButton;
+    int rval = 0, ok_space, cancel_space;
+    WINDOW *dialog, *menu;
+    unsigned char **items = NULL;
+    dialogMenuItem *ditems;
+    int menu_width, tag_x, item_x;
+    
+draw:
+    choice = ch ? *ch : 0;
+    scroll = sc ? *sc : 0;
+    button = 0;
+    
+    /* If item_no is a positive integer, use old item specification format */
+    if (cnt >= 0) {
+	items = it;
+	ditems = NULL;
+	item_no = cnt;
+    }
+    /* It's the new specification format - fake the rest of the code out */
+    else {
+	item_no = abs(cnt);
+	ditems = it;
+	if (!items)
+	    items = (unsigned char **)alloca((item_no * 2) * sizeof(unsigned char *));
+	
+	/* Initializes status */
+	for (i = 0; i < item_no; i++) {
+	    items[i*2] = ditems[i].prompt;
+	    items[i*2 + 1] = ditems[i].title;
+	}
+    }
+    max_choice = MIN(menu_height, item_no);
+    
+    tag_x = 0;
+    item_x = 0;
+    /* Find length of longest item in order to center menu */
+    for (i = 0; i < item_no; i++) {
+	l = strlen(items[i * 2]);
+	for (j = 0; j < item_no; j++) {
+	    k = strlen(items[j * 2 + 1]);
+	    tag_x = MAX(tag_x, l + k + 2);
+	}
+	item_x = MAX(item_x, l);
+    }
+    if (height < 0)
+	height = strheight(prompt) + menu_height + 4 + 2;
+    if (width < 0) {
+	i = strwidth(prompt);
+	j = ((title != NULL) ? strwidth(title) : 0);
+	width = MAX(i, j);
+	width = MAX(width, tag_x + 4) + 4;
+    }
+    width = MAX(width, 24);
+    
+    if (width > COLS)
+	width = COLS;
+    if (height > LINES)
+	height = LINES;
+    /* center dialog box on screen */
+    x = DialogX ? DialogX : (COLS - width) / 2;
+    y = DialogY ? DialogY : (LINES - height) / 2;
+    
+#ifdef HAVE_NCURSES
+    if (use_shadow)
+	draw_shadow(stdscr, y, x, height, width);
+#endif
+    dialog = newwin(height, width, y, x);
+    if (dialog == NULL) {
+	endwin();
+	fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height, width, y, x);
+	return -1;
+    }
+    keypad(dialog, TRUE);
+    
+    draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+    wattrset(dialog, border_attr);
+    wmove(dialog, height - 3, 0);
+    waddch(dialog, ACS_LTEE);
+    for (i = 0; i < width - 2; i++)
+	waddch(dialog, ACS_HLINE);
+    wattrset(dialog, dialog_attr);
+    waddch(dialog, ACS_RTEE);
+    wmove(dialog, height - 2, 1);
+    for (i = 0; i < width - 2; i++)
+	waddch(dialog, ' ');
+    
+    if (title != NULL) {
+	wattrset(dialog, title_attr);
+	wmove(dialog, 0, (width - strlen(title)) / 2 - 1);
+	waddch(dialog, ' ');
+	waddstr(dialog, title);
+	waddch(dialog, ' ');
+    }
+    wattrset(dialog, dialog_attr);
+    wmove(dialog, 1, 2);
+    print_autowrap(dialog, prompt, height - 1, width - 2, width, 1, 2, TRUE, FALSE);
+    
+    menu_width = width - 6;
+    getyx(dialog, cur_y, cur_x);
+    box_y = cur_y + 1;
+    box_x = (width - menu_width) / 2 - 1;
+    
+    /* create new window for the menu */
+    menu = subwin(dialog, menu_height, menu_width, y + box_y + 1, x + box_x + 1);
+    if (menu == NULL) {
+	delwin(dialog);
+	endwin();
+	fprintf(stderr, "\nsubwin(dialog,%d,%d,%d,%d) failed, maybe wrong dims\n", menu_height, menu_width,
+		y + box_y + 1, x + box_x + 1);
+	return -1;
+    }
+    keypad(menu, TRUE);
+    
+    /* draw a box around the menu items */
+    draw_box(dialog, box_y, box_x, menu_height+2, menu_width+2, menubox_border_attr, menubox_attr);
+    
+    tag_x = menu_width > tag_x + 1 ? (menu_width - tag_x) / 2 : 1;
+    item_x = menu_width > item_x + 4 ? tag_x + item_x + 2 : menu_width - 3;
+    
+    /* Print the menu */
+    for (i = 0; i < max_choice; i++)
+	print_item(menu, items[(scroll + i) * 2], items[(scroll + i) * 2 + 1], i, i == choice, DREF(ditems, scroll + i), menu_width, tag_x, item_x);
+    wnoutrefresh(menu);
+    print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
+    
+    display_helpline(dialog, height - 1, width);
+    
+    x = width / 2 - 11;
+    y = height - 2;
+    
+    if (ditems && result) {
+	cancelButton = toupper(ditems[CANCEL_BUTTON].prompt[0]);
+	print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : FALSE);
+	okButton = toupper(ditems[OK_BUTTON].prompt[0]);
+	print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : TRUE);
+    }
+    else {
+	cancelButton = 'C';
+	print_button(dialog, "Cancel", y, x + 14, FALSE);
+	okButton = 'O';
+	print_button(dialog, "  OK  ", y, x, TRUE);
+    }
+    
+    wrefresh(dialog);
+    while (key != ESC) {
+	key = wgetch(dialog);
+	
+	/* Shortcut to OK? */
+	if (toupper(key) == okButton) {
+	    if (ditems) {
+		if (result && ditems[OK_BUTTON].fire) {
+		    int status;
+		    WINDOW *save;
+
+		    save = dupwin(newscr);
+		    status = ditems[OK_BUTTON].fire(&ditems[OK_BUTTON]);
+		    if (status & DITEM_RESTORE) {
+			touchwin(save);
+			wrefresh(save);
+		    }
+		    delwin(save);
+		}
+	    }
+	    else if (result)
+		strcpy(result, items[(scroll + choice) * 2]);
+	    rval = 0;
+	    key = ESC;	/* Punt! */
+	    break;
+	}
+
+	/* Shortcut to cancel? */
+	if (toupper(key) == cancelButton) {
+	    if (ditems && result && ditems[CANCEL_BUTTON].fire) {
+		int status;
+		WINDOW *save;
+
+		save = dupwin(newscr);
+		status = ditems[CANCEL_BUTTON].fire(&ditems[CANCEL_BUTTON]);
+		if (status & DITEM_RESTORE) {
+		    touchwin(save);
+		    wrefresh(save);
+		}
+		delwin(save);
+	    }
+	    rval = 1;
+	    key = ESC;	/* Run away! */
+	    break;
+	}
+
+	/* Check if key pressed matches first character of any item tag in menu */
+	for (i = 0; i < max_choice; i++)	
+	    if (key < 0x100 && key != ' ' && toupper(key) == toupper(items[(scroll + i) * 2][0]))
+		break;
+
+	if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) || KEY_IS_UP(key) || KEY_IS_DOWN(key)) {
+	    if (key >= '1' && key <= MIN('9', '0'+max_choice))
+		i = key - '1';
+	    else if (KEY_IS_UP(key)) {
+		if (!choice) {
+		    if (scroll) {
+			/* Scroll menu down */
+			getyx(dialog, cur_y, cur_x);    /* Save cursor position */
+			if (menu_height > 1) {
+			    /* De-highlight current first item before scrolling down */
+			    print_item(menu, items[scroll * 2], items[scroll * 2 + 1], 0, FALSE, DREF(ditems, scroll), menu_width, tag_x, item_x);
+			    scrollok(menu, TRUE);
+			    wscrl(menu, -1);
+			    scrollok(menu, FALSE);
+			}
+			scroll--;
+			print_item(menu, items[scroll * 2], items[scroll * 2 + 1], 0, TRUE, DREF(ditems, scroll), menu_width, tag_x, item_x);
+			wnoutrefresh(menu);
+			print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
+			wrefresh(dialog);
+		    }
+		    continue;    /* wait for another key press */
+		}
+		else
+		    i = choice - 1;
+	    }
+	    else if (KEY_IS_DOWN(key)) {
+		if (choice == max_choice - 1) {
+		    if (scroll + choice < item_no - 1) {
+			/* Scroll menu up */
+			getyx(dialog, cur_y, cur_x);    /* Save cursor position */
+			if (menu_height > 1) {
+			    /* De-highlight current last item before scrolling up */
+			    print_item(menu, items[(scroll + max_choice - 1) * 2],
+				       items[(scroll + max_choice - 1) * 2 + 1],
+				       max_choice-1, FALSE, DREF(ditems, scroll + max_choice - 1), menu_width, tag_x, item_x);
+			    scrollok(menu, TRUE);
+			    scroll(menu);
+			    scrollok(menu, FALSE);
+			}
+			scroll++;
+			print_item(menu, items[(scroll + max_choice - 1) * 2],
+				   items[(scroll + max_choice - 1) * 2 + 1],
+				   max_choice - 1, TRUE, DREF(ditems, scroll + max_choice - 1), menu_width, tag_x, item_x);
+			wnoutrefresh(menu);
+			print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
+			wrefresh(dialog);
+		    }
+		    continue;    /* wait for another key press */
+		}
+		else
+		    i = choice + 1;
+	    }
+	    
+	    if (i != choice) {
+		/* De-highlight current item */
+		getyx(dialog, cur_y, cur_x);    /* Save cursor position */
+		print_item(menu, items[(scroll + choice) * 2], items[(scroll + choice) * 2 + 1], choice, FALSE, DREF(ditems, scroll + choice), menu_width, tag_x, item_x);
+		
+		/* Highlight new item */
+		choice = i;
+		print_item(menu, items[(scroll + choice) * 2], items[(scroll + choice) * 2 + 1], choice, TRUE, DREF(ditems, scroll + choice), menu_width, tag_x, item_x);
+		wnoutrefresh(menu);
+		wmove(dialog, cur_y, cur_x);  /* Restore cursor to previous position */
+		wrefresh(dialog);
+	    }
+	    continue;    /* wait for another key press */
+	}
+	
+	switch (key) {
+	case KEY_PPAGE:
+	    if (scroll > height - 4) {	/* can we go up? */
+		scroll -= (height - 4);
+	    } else {
+		scroll = 0;
+	    }
+	    redraw_menu = TRUE;
+	    break;
+	    
+	case KEY_NPAGE:
+	    if (scroll + menu_height >= item_no-1 - menu_height) { /* can we go down a full page? */
+		scroll = item_no - menu_height;
+		if (scroll < 0)
+		    scroll = 0;
+	    } else {
+		scroll += menu_height;
+	    }
+	    redraw_menu = TRUE;
+	    break;
+	    
+	case KEY_HOME:
+	    scroll = 0;
+	    choice = 0;
+	    redraw_menu = TRUE;
+	    break;
+	    
+	case KEY_END:
+	    scroll = item_no - menu_height;
+	    if (scroll < 0)
+		scroll = 0;
+	    choice = max_choice - 1;
+	    redraw_menu = TRUE;
+	    break;
+	    
+	case KEY_BTAB:
+	case TAB:
+	case KEY_LEFT:
+	case KEY_RIGHT:
+	    button = !button;
+	    if (ditems && result) {
+		print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5, ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
+		print_button(dialog, ditems[OK_BUTTON].prompt, y, x, ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
+		ok_space = 1;
+		cancel_space = strlen(ditems[OK_BUTTON].prompt) + 6;
+	    }
+	    else {
+		print_button(dialog, "Cancel", y, x + 14, button);
+		print_button(dialog, "  OK  ", y, x, !button);
+		ok_space = 3;
+		cancel_space = 15;
+	    }
+	    if (button)
+		wmove(dialog, y, x+cancel_space);
+	    else
+		wmove(dialog, y, x+ok_space);
+	    wrefresh(dialog);
+	    break;
+	    
+	case ' ':
+	case '\r':
+	case '\n':
+	    if (!button) {
+		/* A fire routine can do just about anything to the screen, so be prepared
+		   to accept some hints as to what to do in the aftermath. */
+		if (ditems) {
+		    if (ditems[scroll + choice].fire) {
+			int status;
+			WINDOW *save;
+
+			save = dupwin(newscr);
+			status = ditems[scroll + choice].fire(&ditems[scroll + choice]);
+			if (status & DITEM_RESTORE) {
+			    touchwin(save);
+			    wrefresh(save);
+			}
+			delwin(save);
+			if (status & DITEM_CONTINUE)
+			    continue;
+			else if (status & DITEM_LEAVE_MENU) {
+			    /* Allow a fire action to take us out of the menu */
+			    key = ESC;
+			    break;
+			}
+			else if (status & DITEM_RECREATE) {
+			    delwin(menu);
+			    delwin(dialog);
+			    dialog_clear();
+			    goto draw;
+			}
+		    }
+		}
+		else if (result)
+		    strcpy(result, items[(scroll+choice)*2]);
+	    }
+	    rval = button;
+	    key = ESC;
+	    break;
+	    
+	case ESC:
+	    rval = -1;
+	    break;
+	    
+	case KEY_F(1):
+	case '?':
+	    display_helpfile();
+	    break;
+	}
+	
+	/* save info about menu item position */
+	if (ch)
+	    *ch = choice;
+	if (sc)
+	    *sc = scroll;
+	
+	if (redraw_menu) {
+	    for (i = 0; i < max_choice; i++) {
+		print_item(menu, items[(scroll + i) * 2], items[(scroll + i) * 2 + 1], i, i == choice, DREF(ditems, scroll + i), menu_width, tag_x, item_x);
+	    }
+	    wnoutrefresh(menu);
+	    getyx(dialog, cur_y, cur_x);    /* Save cursor position */
+	    print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
+	    wmove(dialog, cur_y, cur_x);  /* Restore cursor to previous position */
+	    wrefresh(dialog);
+	    redraw_menu = FALSE;
+	}
+    }
+    delwin(menu);
+    delwin(dialog);
+    return rval;
+}
+
+
+/*
+ * Print menu item
+ */
+static void
+print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int choice, int selected, dialogMenuItem *me, int menu_width, int tag_x, int item_x)
+{
+    int i;
+
+    if (tag == NULL)
+	errx(1, "bad parameter to print_item()\n");
+    
+    /* Clear 'residue' of last item */
+    wattrset(win, menubox_attr);
+    wmove(win, choice, 0);
+    for (i = 0; i < menu_width; i++)
+	waddch(win, ' ');
+    wmove(win, choice, tag_x);
+    wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
+    waddch(win, tag[0]);
+    wattrset(win, selected ? tag_selected_attr : tag_attr);
+    waddnstr(win, tag + 1, item_x - tag_x - 3);
+    wmove(win, choice, item_x);
+    wattrset(win, selected ? item_selected_attr : item_attr);
+    waddnstr(win, item, menu_width - item_x - 1);
+    /* If have a selection handler for this, call it */
+    if (me && me->selected) {
+	wrefresh(win);
+	me->selected(me, selected);
+    }
+}
+/* End of print_item() */
author	nwhitehorn <nwhitehorn@FreeBSD.org>	2011-01-12 14:55:02 +0000
committer	nwhitehorn <nwhitehorn@FreeBSD.org>	2011-01-12 14:55:02 +0000
commit	3d4e8889889e5e36302454225999f7e146d3219c (patch)
tree	fa315b999f531039df54ab7af8e99f7e8daad77c /gnu/lib/libodialog/menubox.c
parent	b905920a72950a63c9782b4911d252bfac08db6e (diff)
download	FreeBSD-src-3d4e8889889e5e36302454225999f7e146d3219c.zip FreeBSD-src-3d4e8889889e5e36302454225999f7e146d3219c.tar.gz