diff options
Diffstat (limited to 'gnu/lib/libdialog/checklist.c')
-rw-r--r-- | gnu/lib/libdialog/checklist.c | 399 |
1 files changed, 255 insertions, 144 deletions
diff --git a/gnu/lib/libdialog/checklist.c b/gnu/lib/libdialog/checklist.c index 0890c00..66f0c8f 100644 --- a/gnu/lib/libdialog/checklist.c +++ b/gnu/lib/libdialog/checklist.c @@ -3,6 +3,8 @@ * * 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 @@ -23,8 +25,10 @@ #include "dialog.priv.h" -static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected); +static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected, + dialogMenuItem *me); +#define DREF(di, item) ((di) ? &((di)[(item)]) : NULL) static int list_width, check_x, item_x; @@ -32,23 +36,46 @@ static int list_width, check_x, item_x; /* * Display a dialog box with a list of options that can be turned on or off */ -int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, int width, int list_height, int item_no, unsigned char **items, unsigned char *result) +int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, int width, + int list_height, int item_no, void *it, unsigned char *result) { int i, j, x, y, cur_x, cur_y, box_x, box_y, key = 0, button = 0, choice = 0, - l, k, scroll = 0, max_choice, *status; + l, k, scroll = 0, max_choice, *status; int redraw_menu = FALSE; + char okButton, cancelButton; WINDOW *dialog, *list; + unsigned char **items; + dialogMenuItem *ditems; /* Allocate space for storing item on/off status */ - if ((status = malloc(sizeof(int)*item_no)) == NULL) { + if ((status = alloca(sizeof(int) * abs(item_no))) == NULL) { endwin(); fprintf(stderr, "\nCan't allocate memory in dialog_checklist().\n"); exit(-1); } - /* Initializes status */ - for (i = 0; i < item_no; i++) - status[i] = !strcasecmp(items[i*3 + 2], "on"); + /* Previous calling syntax, e.g. just a list of strings? */ + if (item_no >= 0) { + items = it; + ditems = NULL; + /* Initializes status */ + for (i = 0; i < item_no; i++) + status[i] = !strcasecmp(items[i*3 + 2], "on"); + } + /* It's the new specification format - fake the rest of the code out */ + else { + item_no = abs(item_no); + ditems = it; + items = (unsigned char **)alloca((item_no * 3) * sizeof(unsigned char *)); + + /* Initializes status */ + for (i = 0; i < item_no; i++) { + status[i] = ditems[i].checked ? (*ditems[i].checked)(&ditems[i]) : FALSE; + items[i*3] = ditems[i].prompt; + items[i*3 + 1] = ditems[i].title; + items[i*3 + 2] = status[i] ? "on" : "off"; + } + } max_choice = MIN(list_height, item_no); check_x = 0; @@ -63,23 +90,23 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in item_x = MAX(item_x, l); } if (height < 0) - height = strheight(prompt)+list_height+4+2; + height = strheight(prompt)+list_height+4+2; if (width < 0) { - i = strwidth(prompt); - j = ((title != NULL) ? strwidth(title) : 0); - width = MAX(i,j); - width = MAX(width,check_x+4)+4; + i = strwidth(prompt); + j = ((title != NULL) ? strwidth(title) : 0); + width = MAX(i,j); + width = MAX(width,check_x+4)+4; } width = MAX(width,24); if (width > COLS) - width = COLS; + width = COLS; if (height > LINES) - height = LINES; + height = LINES; /* center dialog box on screen */ x = (COLS - width)/2; y = (LINES - height)/2; - + #ifdef HAVE_NCURSES if (use_shadow) draw_shadow(stdscr, y, x, height, width); @@ -87,11 +114,11 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in 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); - exit(1); + 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); @@ -113,31 +140,32 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in } wattrset(dialog, dialog_attr); wmove(dialog, 1, 2); - print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE); + print_autowrap(dialog, prompt, height - 1, width - 2, width, 1, 2, TRUE, FALSE); - list_width = width-6; + list_width = width - 6; getyx(dialog, cur_y, cur_x); box_y = cur_y + 1; - box_x = (width - list_width)/2 - 1; + box_x = (width - list_width) / 2 - 1; /* create new window for the list */ list = subwin(dialog, list_height, list_width, y + box_y + 1, x + box_x + 1); if (list == NULL) { endwin(); - fprintf(stderr, "\nsubwin(dialog,%d,%d,%d,%d) failed, maybe wrong dims\n", list_height,list_width,y+box_y+1,x+box_x+1); - exit(1); + fprintf(stderr, "\nsubwin(dialog,%d,%d,%d,%d) failed, maybe wrong dims\n", list_height, list_width, + y + box_y + 1, x + box_x + 1); + return -1; } keypad(list, TRUE); /* draw a box around the list items */ - draw_box(dialog, box_y, box_x, list_height+2, list_width+2, menubox_border_attr, menubox_attr); + draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2, menubox_border_attr, menubox_attr); check_x = (list_width - check_x) / 2; item_x = check_x + item_x + 6; /* Print the list */ for (i = 0; i < max_choice; i++) - print_item(list, items[i*3], items[i*3 + 1], status[i], i, i == choice); + print_item(list, items[i*3], items[i*3 + 1], status[i], i, i == choice, DREF(ditems, i)); wnoutrefresh(list); print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y); @@ -145,49 +173,83 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in x = width/2-11; y = height-2; - print_button(dialog, "Cancel", y, x+14, FALSE); - print_button(dialog, " OK ", y, x, TRUE); + /* Is this a fancy new style argument string where we get to override + * the buttons, or an old style one where they're fixed? + */ + 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 && result && ditems[OK_BUTTON].fire) { + if ((*ditems[OK_BUTTON].fire)(&ditems[OK_BUTTON]) == DITEM_FAILURE) + continue; + else + delwin(dialog); + } + else { + delwin(dialog); + *result = '\0'; + for (i = 0; i < item_no; i++) { + if (status[i]) { + strcat(result, items[i*3]); + strcat(result, "\n"); + } + } + } + return 0; + } + /* Shortcut to cancel? */ + else if (toupper(key) == cancelButton) { + if (ditems && result && ditems[CANCEL_BUTTON].fire) { + if ((*ditems[CANCEL_BUTTON].fire)(&ditems[CANCEL_BUTTON]) == DITEM_FAILURE) + continue; + } + delwin(dialog); + return 1; + } + /* Check if key pressed matches first character of any item tag in list */ for (i = 0; i < max_choice; i++) if (key < 0x100 && toupper(key) == toupper(items[(scroll+i)*3][0])) break; - if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) || - key == KEY_UP || key == KEY_DOWN || key == ' ' || - key == '+' || key == '-' ) { + if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) || key == KEY_UP || + key == KEY_DOWN || key == ' ' || key == '+' || key == '-' ) { + if (key >= '1' && key <= MIN('9', '0'+max_choice)) i = key - '1'; + else if (key == KEY_UP || key == '-') { if (!choice) { if (scroll) { -#ifdef BROKEN_WSCRL - /* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation - violation when scrolling windows of height = 4, so scrolling is not - used for now */ - scroll--; - getyx(dialog, cur_y, cur_x); /* Save cursor position */ - /* Reprint list to scroll down */ - for (i = 0; i < max_choice; i++) - print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice); - -#else - /* Scroll list down */ getyx(dialog, cur_y, cur_x); /* Save cursor position */ if (list_height > 1) { /* De-highlight current first item before scrolling down */ - print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, FALSE); + print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, FALSE, DREF(ditems, scroll)); scrollok(list, TRUE); wscrl(list, -1); scrollok(list, FALSE); } scroll--; - print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, TRUE); -#endif + print_item(list, items[scroll*3], items[scroll*3 + 1], status[scroll], 0, TRUE, DREF(ditems, scroll)); wnoutrefresh(list); print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y); wrefresh(dialog); @@ -200,30 +262,17 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in else if (key == KEY_DOWN || key == '+') { if (choice == max_choice - 1) { if (scroll+choice < item_no-1) { -#ifdef BROKEN_WSCRL - /* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation - violation when scrolling windows of height = 4, so scrolling is not - used for now */ - scroll++; - getyx(dialog, cur_y, cur_x); /* Save cursor position */ - /* Reprint list to scroll up */ - for (i = 0; i < max_choice; i++) - print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice); - -#else - /* Scroll list up */ getyx(dialog, cur_y, cur_x); /* Save cursor position */ if (list_height > 1) { /* De-highlight current last item before scrolling up */ - print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, FALSE); + print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, FALSE, DREF(ditems, scroll + max_choice - 1)); scrollok(list, TRUE); scroll(list); scrollok(list, FALSE); } scroll++; - print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, TRUE); -#endif + print_item(list, items[(scroll+max_choice-1)*3], items[(scroll+max_choice-1)*3 + 1], status[scroll+max_choice-1], max_choice-1, TRUE, DREF(ditems, scroll + max_choice - 1)); wnoutrefresh(list); print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y); wrefresh(dialog); @@ -234,11 +283,49 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in i = choice + 1; } else if (key == ' ') { /* Toggle item status */ - status[scroll+choice] = !status[scroll+choice]; + char lbra = 0, rbra = 0, mark = 0; + + if (ditems) { + if (ditems[scroll+choice].fire) { + int st = (*ditems[scroll+choice].fire)(&ditems[scroll+choice]); + + if (st == DITEM_LEAVE_MENU) { + /* Allow a fire action to take us out of the menu */ + key = ESC; + break; + } + else if (st == DITEM_FAILURE) + continue; + else if (st == DITEM_REDRAW) { + for (i = 0; i < max_choice; i++) { + status[scroll + i] = ditems[scroll + i].checked ? + (*ditems[scroll + i].checked)(&ditems[scroll + i]) : FALSE; + print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice, + DREF(ditems, scroll + i)); + } + wnoutrefresh(list); + print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y); + wrefresh(dialog); + } + } + status[scroll+choice] = ditems[scroll+choice].checked ? + (*ditems[scroll+choice].checked)(&ditems[scroll+choice]) : FALSE; + lbra = ditems[scroll+choice].lbra; + rbra = ditems[scroll+choice].rbra; + mark = ditems[scroll+choice].mark; + } + else + status[scroll+choice] = !status[scroll+choice]; getyx(dialog, cur_y, cur_x); /* Save cursor position */ wmove(list, choice, check_x); wattrset(list, check_selected_attr); - wprintw(list, "[%c]", status[scroll+choice] ? 'X' : ' '); + if (!lbra) + lbra = '['; + if (!rbra) + rbra = ']'; + if (!mark) + mark = 'X'; + wprintw(list, "%c%c%c", lbra, status[scroll+choice] ? mark : ' ', rbra); wnoutrefresh(list); wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */ wrefresh(dialog); @@ -248,11 +335,13 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in if (i != choice) { /* De-highlight current item */ getyx(dialog, cur_y, cur_x); /* Save cursor position */ - print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, FALSE); + print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, FALSE, + DREF(ditems, scroll + choice)); /* Highlight new item */ choice = i; - print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, TRUE); + print_item(list, items[(scroll+choice)*3], items[(scroll+choice)*3 + 1], status[scroll+choice], choice, TRUE, + DREF(ditems, scroll + choice)); wnoutrefresh(list); wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */ wrefresh(dialog); @@ -261,99 +350,118 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in } 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 + list_height >= item_no-1 - list_height) { /* can we go down a full page? */ - scroll = item_no - list_height; - if (scroll < 0) scroll = 0; - } else { - scroll += list_height; - } - redraw_menu = TRUE; - break; - case KEY_HOME: + case KEY_PPAGE: /* can we go up? */ + if (scroll > height - 4) + scroll -= (height-4); + else scroll = 0; - choice = 0; - redraw_menu = TRUE; - break; - case KEY_END: + redraw_menu = TRUE; + break; + + case KEY_NPAGE: /* can we go down a full page? */ + if (scroll + list_height >= item_no-1 - list_height) { scroll = item_no - list_height; - if (scroll < 0) scroll = 0; - choice = max_choice - 1; - redraw_menu = TRUE; - break; - case 'O': - case 'o': - delwin(dialog); - *result = '\0'; - for (i = 0; i < item_no; i++) - if (status[i]) { - strcat(result, items[i*3]); - strcat(result, "\n"); - } - free(status); - return 0; - case 'C': - case 'c': - delwin(dialog); - free(status); - return 1; - case TAB: - case KEY_BTAB: - case KEY_LEFT: - case KEY_RIGHT: - if (!button) { - button = 1; /* Indicates "Cancel" button is selected */ - print_button(dialog, " OK ", y, x, FALSE); - print_button(dialog, "Cancel", y, x+14, TRUE); - } - else { - button = 0; /* Indicates "OK" button is selected */ - print_button(dialog, "Cancel", y, x+14, FALSE); - print_button(dialog, " OK ", y, x, TRUE); - } - wrefresh(dialog); - break; - case ' ': - case '\n': - case '\r': - delwin(dialog); - if (!button) { + if (scroll < 0) + scroll = 0; + } + else + scroll += list_height; + redraw_menu = TRUE; + break; + + case KEY_HOME: /* go to the top */ + scroll = 0; + choice = 0; + redraw_menu = TRUE; + break; + + case KEY_END: /* Go to the bottom */ + scroll = item_no - list_height; + if (scroll < 0) + scroll = 0; + choice = max_choice - 1; + redraw_menu = TRUE; + break; + + /* swap the selection of OK/Cancel buttons */ + case TAB: + case KEY_BTAB: + case KEY_LEFT: + case KEY_RIGHT: + button = !button; + if (ditems && result) { + if (button) { + print_button(dialog, ditems[OK_BUTTON].prompt, y, x, + ditems[OK_BUTTON].checked ? (*ditems[OK_BUTTON].checked)(&ditems[OK_BUTTON]) : !button); + 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); + } + else { + 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); + } + } + else { + if (button) { + print_button(dialog, " OK ", y, x, !button); + print_button(dialog, "Cancel", y, x + 14, button); + } + else { + print_button(dialog, "Cancel", y, x + 14, button); + print_button(dialog, " OK ", y, x, !button); + } + } + wrefresh(dialog); + break; + + /* Select either the OK or Cancel button */ + case '\n': + case '\r': + if (!button && result) { + if (ditems && ditems[button ? CANCEL_BUTTON : OK_BUTTON].fire) { + if ((*ditems[button ? CANCEL_BUTTON : OK_BUTTON].fire)(&ditems[button ? CANCEL_BUTTON : OK_BUTTON]) == + DITEM_FAILURE) + continue; + } + else { *result = '\0'; - for (i = 0; i < item_no; i++) + for (i = 0; i < item_no; i++) { if (status[i]) { strcat(result, items[i*3]); strcat(result, "\n"); } + } } - free(status); - return button; - case ESC: - break; + } + delwin(dialog); + return button; + break; + + /* Let me outta here! */ + case ESC: + break; + + /* Help! */ case KEY_F(1): case '?': - display_helpfile(); - break; + display_helpfile(); + break; } + if (redraw_menu) { - for (i = 0; i < max_choice; i++) - print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice); - wnoutrefresh(list); - print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y); - wrefresh(dialog); - redraw_menu = FALSE; + for (i = 0; i < max_choice; i++) + print_item(list, items[(scroll+i)*3], items[(scroll+i)*3 + 1], status[scroll+i], i, i == choice, + DREF(ditems, scroll + i)); + wnoutrefresh(list); + print_arrows(dialog, scroll, list_height, item_no, box_x, box_y, check_x + 4, cur_x, cur_y); + wrefresh(dialog); + redraw_menu = FALSE; } } - + delwin(dialog); - free(status); return -1; /* ESC pressed */ } /* End of dialog_checklist() */ @@ -362,7 +470,8 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in /* * Print list item */ -static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected) +static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int status, int choice, int selected, + dialogMenuItem *me) { int i; @@ -373,7 +482,9 @@ static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int waddch(win, ' '); wmove(win, choice, check_x); wattrset(win, selected ? check_selected_attr : check_attr); - wprintw(win, "[%c]", status ? 'X' : ' '); + wprintw(win, "%c%c%c", me && me->lbra ? me->lbra : '[', + status ? me && me->mark ? me->mark : 'X' : ' ', + me && me->rbra ? me->rbra : ']'); wattrset(win, menubox_attr); waddch(win, ' '); wattrset(win, selected ? tag_key_selected_attr : tag_key_attr); |