git.ozlabs.org Git - petitboot/blob - ui/ncurses/nc-widgets.c

   1 /*
   2  *  Copyright (C) 2013 IBM Corporation
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; version 2 of the License.
   7  *
   8  *  This program is distributed in the hope that it will be useful,
   9  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *  GNU General Public License for more details.
  12  *
  13  *  You should have received a copy of the GNU General Public License
  14  *  along with this program; if not, write to the Free Software
  15  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  */
  17
  18 #define _GNU_SOURCE
  19
  20 #include "config.h"
  21
  22 #include <linux/input.h> /* This must be included before ncurses.h */
  23 #if defined HAVE_NCURSESW_CURSES_H
  24 #  include <ncursesw/curses.h>
  25 #elif defined HAVE_NCURSESW_H
  26 #  include <ncursesw.h>
  27 #elif defined HAVE_NCURSES_CURSES_H
  28 #  include <ncurses/curses.h>
  29 #elif defined HAVE_NCURSES_H
  30 #  include <ncurses.h>
  31 #elif defined HAVE_CURSES_H
  32 #  include <curses.h>
  33 #else
  34 #  error "Curses header file not found."
  35 #endif
  36
  37 #if defined HAVE_NCURSESW_FORM_H
  38 #  include <ncursesw/form.h>
  39 #elif defined HAVE_NCURSES_FORM_H
  40 #  include <ncurses/form.h>
  41 #elif defined HAVE_FORM_H
  42 #  include <form.h>
  43 #else
  44 #  error "Curses form.h not found."
  45 #endif
  46
  47 #include <string.h>
  48 #include <ctype.h>
  49
  50 #include <talloc/talloc.h>
  51 #include <types/types.h>
  52 #include <log/log.h>
  53 #include <util/util.h>
  54
  55 #include "config.h"
  56 #include "nc-cui.h"
  57 #include "nc-widgets.h"
  58
  59 #undef move
  60
  61 #define to_checkbox(w) container_of(w, struct nc_widget_checkbox, widget)
  62 #define to_textbox(w) container_of(w, struct nc_widget_textbox, widget)
  63 #define to_button(w) container_of(w, struct nc_widget_button, widget)
  64 #define to_select(w) container_of(w, struct nc_widget_select, widget)
  65
  66 static const char *checkbox_checked_str = "[*]";
  67 static const char *checkbox_unchecked_str = "[ ]";
  68
  69 static const char *select_selected_str = "(*)";
  70 static const char *select_unselected_str = "( )";
  71
  72 struct nc_widgetset {
  73         WINDOW  *mainwin;
  74         WINDOW  *subwin;
  75         FORM    *form;
  76         FIELD   **fields;
  77         int     n_fields, n_alloc_fields;
  78         void    (*widget_focus)(struct nc_widget *, void *);
  79         void    *widget_focus_arg;
  80         FIELD   *cur_field;
  81 };
  82
  83 struct nc_widget {
  84         FIELD   *field;
  85         bool    (*process_key)(struct nc_widget *, FORM *, int);
  86         void    (*set_visible)(struct nc_widget *, bool);
  87         void    (*move)(struct nc_widget *, int, int);
  88         void    (*field_focus)(struct nc_widget *, FIELD *);
  89         int     focussed_attr;
  90         int     unfocussed_attr;
  91         int     height;
  92         int     width;
  93         int     focus_y;
  94         int     x;
  95         int     y;
  96 };
  97
  98 struct nc_widget_label {
  99         struct nc_widget        widget;
 100         const char              *text;
 101 };
 102
 103 struct nc_widget_checkbox {
 104         struct nc_widget        widget;
 105         bool                    checked;
 106 };
 107
 108 struct nc_widget_textbox {
 109         struct nc_widget        widget;
 110 };
 111
 112 struct nc_widget_select {
 113         struct nc_widget        widget;
 114         struct select_option {
 115                 char            *str;
 116                 int             val;
 117                 FIELD           *field;
 118         } *options;
 119         int                     top, left, size;
 120         int                     n_options, selected_option;
 121         struct nc_widgetset     *set;
 122         void                    (*on_change)(void *, int);
 123         void                    *on_change_arg;
 124 };
 125
 126 struct nc_widget_button {
 127         struct nc_widget        widget;
 128         void                    (*click)(void *arg);
 129         void                    *arg;
 130 };
 131
 132 static void widgetset_add_field(struct nc_widgetset *set, FIELD *field);
 133
 134 static bool process_key_nop(struct nc_widget *widget __attribute__((unused)),
 135                 FORM *form __attribute((unused)),
 136                 int key __attribute__((unused)))
 137 {
 138         return false;
 139 }
 140
 141 static void field_set_visible(FIELD *field, bool visible)
 142 {
 143         int opts = field_opts(field) & ~O_VISIBLE;
 144         if (visible)
 145                 opts |= O_VISIBLE;
 146         set_field_opts(field, opts);
 147 }
 148
 149 static void field_move(FIELD *field, int y, int x)
 150 {
 151         move_field(field, y, x);
 152 }
 153
 154 static int label_destructor(void *ptr)
 155 {
 156         struct nc_widget_label *label = ptr;
 157         free_field(label->widget.field);
 158         return 0;
 159 }
 160
 161
 162 struct nc_widget_label *widget_new_label(struct nc_widgetset *set,
 163                 int y, int x, char *str)
 164 {
 165         struct nc_widget_label *label;
 166         FIELD *f;
 167         int len;
 168
 169         len = strlen(str);
 170
 171         label = talloc_zero(set, struct nc_widget_label);
 172         label->widget.height = 1;
 173         label->widget.width = len;
 174         label->widget.x = x;
 175         label->widget.y = y;
 176         label->widget.process_key = process_key_nop;
 177         label->widget.field = f = new_field(1, len, y, x, 0, 0);
 178         label->widget.focussed_attr = A_NORMAL;
 179         label->widget.unfocussed_attr = A_NORMAL;
 180
 181         field_opts_off(f, O_ACTIVE);
 182         set_field_buffer(f, 0, str);
 183         set_field_userptr(f, &label->widget);
 184
 185         widgetset_add_field(set, label->widget.field);
 186         talloc_set_destructor(label, label_destructor);
 187
 188         return label;
 189 }
 190
 191 bool widget_checkbox_get_value(struct nc_widget_checkbox *checkbox)
 192 {
 193         return checkbox->checked;
 194 }
 195
 196 static void checkbox_set_buffer(struct nc_widget_checkbox *checkbox)
 197 {
 198         const char *str;
 199         str = checkbox->checked ? checkbox_checked_str : checkbox_unchecked_str;
 200         set_field_buffer(checkbox->widget.field, 0, str);
 201 }
 202
 203 static bool checkbox_process_key(struct nc_widget *widget,
 204                 FORM *form __attribute__((unused)), int key)
 205 {
 206         struct nc_widget_checkbox *checkbox = to_checkbox(widget);
 207
 208         if (key != ' ')
 209                 return false;
 210
 211         checkbox->checked = !checkbox->checked;
 212         checkbox_set_buffer(checkbox);
 213
 214         return true;
 215 }
 216
 217 static int checkbox_destructor(void *ptr)
 218 {
 219         struct nc_widget_checkbox *checkbox = ptr;
 220         free_field(checkbox->widget.field);
 221         return 0;
 222 }
 223
 224 struct nc_widget_checkbox *widget_new_checkbox(struct nc_widgetset *set,
 225                 int y, int x, bool checked)
 226 {
 227         struct nc_widget_checkbox *checkbox;
 228         FIELD *f;
 229
 230         checkbox = talloc_zero(set, struct nc_widget_checkbox);
 231         checkbox->checked = checked;
 232         checkbox->widget.height = 1;
 233         checkbox->widget.width = strlen(checkbox_checked_str);
 234         checkbox->widget.x = x;
 235         checkbox->widget.y = y;
 236         checkbox->widget.process_key = checkbox_process_key;
 237         checkbox->widget.focussed_attr = A_REVERSE;
 238         checkbox->widget.unfocussed_attr = A_NORMAL;
 239         checkbox->widget.field = f = new_field(1, strlen(checkbox_checked_str),
 240                         y, x, 0, 0);
 241
 242         field_opts_off(f, O_EDIT);
 243         set_field_userptr(f, &checkbox->widget);
 244         checkbox_set_buffer(checkbox);
 245
 246         widgetset_add_field(set, checkbox->widget.field);
 247         talloc_set_destructor(checkbox, checkbox_destructor);
 248
 249         return checkbox;
 250 }
 251
 252 static char *strip_string(char *str)
 253 {
 254         int len, i;
 255
 256         len = strlen(str);
 257
 258         /* clear trailing space */
 259         for (i = len - 1; i >= 0; i--) {
 260                 if (!isspace(str[i]))
 261                         break;
 262                 str[i] = '\0';
 263         }
 264
 265         /* increment str past leading space */
 266         for (i = 0; i < len; i++) {
 267                 if (str[i] == '\0' || !isspace(str[i]))
 268                         break;
 269         }
 270
 271         return str + i;
 272 }
 273
 274 char *widget_textbox_get_value(struct nc_widget_textbox *textbox)
 275 {
 276         char *str = field_buffer(textbox->widget.field, 0);
 277         return str ? strip_string(str) : NULL;
 278 }
 279
 280 static bool textbox_process_key(
 281                 struct nc_widget *widget __attribute__((unused)),
 282                 FORM *form, int key)
 283 {
 284         switch (key) {
 285         case KEY_HOME:
 286                 form_driver(form, REQ_BEG_FIELD);
 287                 break;
 288         case KEY_END:
 289                 form_driver(form, REQ_END_FIELD);
 290                 break;
 291         case KEY_LEFT:
 292                 form_driver(form, REQ_LEFT_CHAR);
 293                 break;
 294         case KEY_RIGHT:
 295                 form_driver(form, REQ_RIGHT_CHAR);
 296                 break;
 297         case KEY_BACKSPACE:
 298                 if (form_driver(form, REQ_LEFT_CHAR) != E_OK)
 299                         break;
 300                 /* fall through */
 301         case KEY_DC:
 302                 form_driver(form, REQ_DEL_CHAR);
 303                 break;
 304         default:
 305                 form_driver(form, key);
 306                 break;
 307         }
 308
 309         return true;
 310 }
 311
 312 static int textbox_destructor(void *ptr)
 313 {
 314         struct nc_widget_textbox *textbox = ptr;
 315         free_field(textbox->widget.field);
 316         return 0;
 317 }
 318
 319 struct nc_widget_textbox *widget_new_textbox(struct nc_widgetset *set,
 320                 int y, int x, int len, char *str)
 321 {
 322         struct nc_widget_textbox *textbox;
 323         FIELD *f;
 324
 325         textbox = talloc_zero(set, struct nc_widget_textbox);
 326         textbox->widget.height = 1;
 327         textbox->widget.width = len;
 328         textbox->widget.x = x;
 329         textbox->widget.y = y;
 330         textbox->widget.process_key = textbox_process_key;
 331         textbox->widget.field = f = new_field(1, len, y, x, 0, 0);
 332         textbox->widget.focussed_attr = A_REVERSE;
 333         textbox->widget.unfocussed_attr = A_UNDERLINE;
 334
 335         field_opts_off(f, O_STATIC | O_WRAP | O_BLANK);
 336         set_field_buffer(f, 0, str);
 337         set_field_back(f, textbox->widget.unfocussed_attr);
 338         set_field_userptr(f, &textbox->widget);
 339
 340         widgetset_add_field(set, textbox->widget.field);
 341         talloc_set_destructor(textbox, textbox_destructor);
 342
 343         return textbox;
 344 }
 345
 346 static void select_option_change(struct select_option *opt, bool selected)
 347 {
 348         const char *str;
 349
 350         str = selected ? select_selected_str : select_unselected_str;
 351
 352         memcpy(opt->str, str, strlen(str));
 353         set_field_buffer(opt->field, 0, opt->str);
 354 }
 355
 356 static bool select_process_key(struct nc_widget *w, FORM *form, int key)
 357 {
 358         struct nc_widget_select *select = to_select(w);
 359         struct select_option *new_opt, *old_opt;
 360         int i, new_idx;
 361         FIELD *field;
 362
 363         switch (key) {
 364         case ' ':
 365         case KEY_ENTER:
 366                 break;
 367         default:
 368                 return false;
 369         }
 370
 371         field = current_field(form);
 372         new_opt = NULL;
 373
 374         for (i = 0; i < select->n_options; i++) {
 375                 if (select->options[i].field == field) {
 376                         new_opt = &select->options[i];
 377                         new_idx = i;
 378                         break;
 379                 }
 380         }
 381
 382         if (!new_opt)
 383                 return true;
 384
 385         if (new_idx == select->selected_option)
 386                 return true;
 387
 388         old_opt = &select->options[select->selected_option];
 389
 390         select_option_change(old_opt, false);
 391         select_option_change(new_opt, true);
 392
 393         select->selected_option = new_idx;
 394
 395         if (select->on_change)
 396                 select->on_change(select->on_change_arg, new_opt->val);
 397
 398         return true;
 399 }
 400
 401 static void select_set_visible(struct nc_widget *widget, bool visible)
 402 {
 403         struct nc_widget_select *select = to_select(widget);
 404         int i;
 405
 406         for (i = 0; i < select->n_options; i++)
 407                 field_set_visible(select->options[i].field, visible);
 408 }
 409
 410 static void select_move(struct nc_widget *widget, int y, int x)
 411 {
 412         struct nc_widget_select *select = to_select(widget);
 413         int i;
 414
 415         for (i = 0; i < select->n_options; i++)
 416                 field_move(select->options[i].field, y + i, x);
 417 }
 418
 419 static void select_field_focus(struct nc_widget *widget, FIELD *field)
 420 {
 421         struct nc_widget_select *select = to_select(widget);
 422         int i;
 423
 424         for (i = 0; i < select->n_options; i++) {
 425                 if (field != select->options[i].field)
 426                         continue;
 427                 widget->focus_y = i;
 428                 return;
 429         }
 430 }
 431
 432 static int select_destructor(void *ptr)
 433 {
 434         struct nc_widget_select *select = ptr;
 435         int i;
 436
 437         for (i = 0; i < select->n_options; i++)
 438                 free_field(select->options[i].field);
 439
 440         return 0;
 441 }
 442
 443 struct nc_widget_select *widget_new_select(struct nc_widgetset *set,
 444                 int y, int x, int len)
 445 {
 446         struct nc_widget_select *select;
 447
 448         select = talloc_zero(set, struct nc_widget_select);
 449         select->widget.width = len;
 450         select->widget.height = 0;
 451         select->widget.x = x;
 452         select->widget.y = y;
 453         select->widget.process_key = select_process_key;
 454         select->widget.set_visible = select_set_visible;
 455         select->widget.move = select_move;
 456         select->widget.field_focus = select_field_focus;
 457         select->widget.focussed_attr = A_REVERSE;
 458         select->widget.unfocussed_attr = A_NORMAL;
 459         select->top = y;
 460         select->left = x;
 461         select->size = len;
 462         select->set = set;
 463
 464         talloc_set_destructor(select, select_destructor);
 465
 466         return select;
 467 }
 468
 469 void widget_select_add_option(struct nc_widget_select *select, int value,
 470                 const char *text, bool selected)
 471 {
 472         const char *str;
 473         FIELD *f;
 474         int i;
 475
 476         /* if we never see an option with selected set, we want the first
 477          * one to be selected */
 478         if (select->n_options == 0)
 479                 selected = true;
 480         else if (selected)
 481                 select_option_change(&select->options[select->selected_option],
 482                                         false);
 483
 484         if (selected) {
 485                 select->selected_option = select->n_options;
 486                 str = select_selected_str;
 487         } else
 488                 str = select_unselected_str;
 489
 490         i = select->n_options++;
 491         select->widget.height = select->n_options;
 492
 493         select->options = talloc_realloc(select, select->options,
 494                                 struct select_option, i + 2);
 495         select->options[i].val = value;
 496         select->options[i].str = talloc_asprintf(select->options,
 497                                         "%s %s", str, text);
 498
 499         select->options[i].field = f = new_field(1, select->size,
 500                                                 select->top + i,
 501                                                 select->left, 0, 0);
 502
 503         field_opts_off(f, O_WRAP | O_EDIT);
 504         set_field_userptr(f, &select->widget);
 505         set_field_buffer(f, 0, select->options[i].str);
 506
 507         widgetset_add_field(select->set, f);
 508 }
 509
 510 int widget_select_get_value(struct nc_widget_select *select)
 511 {
 512         if (!select->n_options)
 513                 return -1;
 514         return select->options[select->selected_option].val;
 515 }
 516
 517 int widget_select_height(struct nc_widget_select *select)
 518 {
 519         return select->n_options;
 520 }
 521
 522 void widget_select_on_change(struct nc_widget_select *select,
 523                 void (*on_change)(void *, int), void *arg)
 524 {
 525         select->on_change = on_change;
 526         select->on_change_arg = arg;
 527 }
 528
 529 static bool button_process_key(struct nc_widget *widget,
 530                 FORM *form __attribute__((unused)), int key)
 531 {
 532         struct nc_widget_button *button = to_button(widget);
 533
 534         if (!button->click)
 535                 return false;
 536
 537         switch (key) {
 538         case ' ':
 539         case '\r':
 540         case '\n':
 541                 button->click(button->arg);
 542                 return true;
 543         }
 544
 545         return false;
 546 }
 547
 548 static int button_destructor(void *ptr)
 549 {
 550         struct nc_widget_button *button = ptr;
 551         free_field(button->widget.field);
 552         return 0;
 553 }
 554
 555 struct nc_widget_button *widget_new_button(struct nc_widgetset *set,
 556                 int y, int x, int size, const char *str,
 557                 void (*click)(void *), void *arg)
 558 {
 559         struct nc_widget_button *button;
 560         char *text;
 561         FIELD *f;
 562         int idx, len;
 563
 564         button = talloc_zero(set, struct nc_widget_button);
 565         button->widget.height = 1;
 566         button->widget.width = size;
 567         button->widget.x = x;
 568         button->widget.y = y;
 569         button->widget.field = f = new_field(1, size + 2, y, x, 0, 0);
 570         button->widget.process_key = button_process_key;
 571         button->widget.focussed_attr = A_REVERSE;
 572         button->widget.unfocussed_attr = A_NORMAL;
 573         button->click = click;
 574         button->arg = arg;
 575
 576         field_opts_off(f, O_EDIT);
 577         set_field_userptr(f, &button->widget);
 578
 579         /* center str in a size-char buffer, but don't overrun */
 580         len = strlen(str);
 581         len = min(len, size);
 582         idx = (size - len) / 2;
 583
 584         text = talloc_array(button, char, size + 3);
 585         memset(text, ' ', size + 2);
 586         memcpy(text + idx + 1, str, len);
 587         text[0] = '[';
 588         text[size + 1] = ']';
 589         text[size + 2] = '\0';
 590
 591         set_field_buffer(f, 0, text);
 592
 593         widgetset_add_field(set, button->widget.field);
 594         talloc_set_destructor(button, button_destructor);
 595
 596         return button;
 597 }
 598
 599 static void widget_focus_change(struct nc_widget *widget, FIELD *field,
 600                 bool focussed)
 601 {
 602         int attr = focussed ? widget->focussed_attr : widget->unfocussed_attr;
 603         set_field_back(field, attr);
 604 }
 605
 606 bool widgetset_process_key(struct nc_widgetset *set, int key)
 607 {
 608         struct nc_widget *widget;
 609         FIELD *field;
 610         int req = 0;
 611
 612         field = current_field(set->form);
 613         assert(field);
 614
 615         /* handle field change events */
 616         switch (key) {
 617         case KEY_BTAB:
 618         case KEY_UP:
 619                 req = REQ_PREV_FIELD;
 620                 break;
 621         case '\t':
 622         case KEY_DOWN:
 623                 req = REQ_NEXT_FIELD;
 624                 break;
 625         case KEY_PPAGE:
 626                 req = REQ_FIRST_FIELD;
 627                 break;
 628         case KEY_NPAGE:
 629                 req = REQ_LAST_FIELD;
 630                 break;
 631         }
 632
 633         widget = field_userptr(field);
 634         if (req) {
 635                 widget_focus_change(widget, field, false);
 636                 form_driver(set->form, req);
 637                 form_driver(set->form, REQ_END_FIELD);
 638                 field = current_field(set->form);
 639                 widget = field_userptr(field);
 640                 widget_focus_change(widget, field, true);
 641                 if (widget->field_focus)
 642                         widget->field_focus(widget, field);
 643                 if (set->widget_focus)
 644                         set->widget_focus(widget, set->widget_focus_arg);
 645                 return true;
 646         }
 647
 648         if (!widget->process_key)
 649                 return false;
 650
 651         return widget->process_key(widget, set->form, key);
 652 }
 653
 654 static int widgetset_destructor(void *ptr)
 655 {
 656         struct nc_widgetset *set = ptr;
 657         free_form(set->form);
 658         return 0;
 659 }
 660
 661 struct nc_widgetset *widgetset_create(void *ctx, WINDOW *main, WINDOW *sub)
 662 {
 663         struct nc_widgetset *set;
 664
 665         set = talloc_zero(ctx, struct nc_widgetset);
 666         set->n_alloc_fields = 8;
 667         set->mainwin = main;
 668         set->subwin = sub;
 669         set->fields = talloc_array(set, FIELD *, set->n_alloc_fields);
 670         talloc_set_destructor(set, widgetset_destructor);
 671
 672         return set;
 673 }
 674
 675 void widgetset_set_widget_focus(struct nc_widgetset *set,
 676                 widget_focus_cb cb, void *arg)
 677 {
 678         set->widget_focus = cb;
 679         set->widget_focus_arg = arg;
 680 }
 681
 682 void widgetset_post(struct nc_widgetset *set)
 683 {
 684         struct nc_widget *widget;
 685         FIELD *field;
 686
 687         set->form = new_form(set->fields);
 688         set_form_win(set->form, set->mainwin);
 689         set_form_sub(set->form, set->subwin);
 690         post_form(set->form);
 691         form_driver(set->form, REQ_END_FIELD);
 692
 693         if (set->cur_field) {
 694                 set_current_field(set->form, set->cur_field);
 695                 field = set->cur_field;
 696         }
 697
 698         field = current_field(set->form);
 699         widget = field_userptr(field);
 700         widget_focus_change(widget, field, true);
 701         if (set->widget_focus)
 702                 set->widget_focus(widget, set->widget_focus_arg);
 703 }
 704
 705 void widgetset_unpost(struct nc_widgetset *set)
 706 {
 707         set->cur_field = current_field(set->form);
 708         unpost_form(set->form);
 709         free_form(set->form);
 710         set->form = NULL;
 711 }
 712
 713 static void widgetset_add_field(struct nc_widgetset *set, FIELD *field)
 714 {
 715         if (set->n_fields == set->n_alloc_fields - 1) {
 716                 set->n_alloc_fields *= 2;
 717                 set->fields = talloc_realloc(set, set->fields,
 718                                 FIELD *, set->n_alloc_fields);
 719         }
 720
 721         set->n_fields++;
 722         set->fields[set->n_fields - 1] = field;
 723         set->fields[set->n_fields] = NULL;
 724 }
 725
 726 #define DECLARE_BASEFN(type) \
 727         struct nc_widget *widget_ ## type ## _base              \
 728                 (struct nc_widget_ ## type *w)                  \
 729         { return &w->widget; }
 730
 731 DECLARE_BASEFN(textbox);
 732 DECLARE_BASEFN(checkbox);
 733 DECLARE_BASEFN(select);
 734 DECLARE_BASEFN(label);
 735 DECLARE_BASEFN(button);
 736
 737 void widget_set_visible(struct nc_widget *widget, bool visible)
 738 {
 739         if (widget->set_visible)
 740                 widget->set_visible(widget, visible);
 741         else
 742                 field_set_visible(widget->field, visible);
 743 }
 744
 745 void widget_move(struct nc_widget *widget, int y, int x)
 746 {
 747         if (widget->move)
 748                 widget->move(widget, y, x);
 749         else
 750                 field_move(widget->field, y, x);
 751
 752         widget->x = x;
 753         widget->y = y;
 754 }
 755
 756 int widget_height(struct nc_widget *widget)
 757 {
 758         return widget->height;
 759 }
 760
 761 int widget_width(struct nc_widget *widget)
 762 {
 763         return widget->width;
 764 }
 765
 766 int widget_x(struct nc_widget *widget)
 767 {
 768         return widget->x;
 769 }
 770
 771 int widget_y(struct nc_widget *widget)
 772 {
 773         return widget->y;
 774 }
 775
 776 int widget_focus_y(struct nc_widget *widget)
 777 {
 778         return widget->focus_y;
 779 }
 780