src/screen_artist.c

   1 /*
   2  * (c) 2005 by Kalle Wallin <kaw@linux.se>
   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; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  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
  19 #include "i18n.h"
  20 #include "options.h"
  21 #include "charset.h"
  22 #include "mpdclient.h"
  23 #include "utils.h"
  24 #include "strfsong.h"
  25 #include "command.h"
  26 #include "screen.h"
  27 #include "screen_utils.h"
  28 #include "screen_browser.h"
  29 #include "gcc.h"
  30
  31 #include <ctype.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <glib.h>
  35
  36 #define BUFSIZE 1024
  37
  38 typedef enum { LIST_ARTISTS, LIST_ALBUMS, LIST_SONGS } artist_mode_t;
  39
  40 static artist_mode_t mode = LIST_ARTISTS;
  41 static GPtrArray *artist_list, *album_list;
  42 static char *artist = NULL;
  43 static char *album  = NULL;
  44
  45 static struct screen_browser browser;
  46
  47 static gint
  48 compare_utf8(gconstpointer s1, gconstpointer s2)
  49 {
  50         char *key1, *key2;
  51         int n;
  52
  53         key1 = g_utf8_collate_key(s1,-1);
  54         key2 = g_utf8_collate_key(s2,-1);
  55         n = strcmp(key1,key2);
  56         g_free(key1);
  57         g_free(key2);
  58         return n;
  59 }
  60
  61 /* list_window callback */
  62 static const char *
  63 artist_lw_callback(unsigned idx, mpd_unused int *highlight, mpd_unused void *data)
  64 {
  65         GPtrArray *list = data;
  66         static char buf[BUFSIZE];
  67         char *str, *str_utf8;
  68
  69         if (mode == LIST_ALBUMS) {
  70                 if (idx == 0)
  71                         return "[..]";
  72                 else if (idx == list->len + 1) {
  73                         str = utf8_to_locale(_("All tracks"));
  74                         g_snprintf(buf, BUFSIZE, "[%s]", str);
  75                         g_free(str);
  76                         return buf;
  77                 }
  78
  79                 --idx;
  80         }
  81
  82         if (idx >= list->len)
  83                 return NULL;
  84
  85         str_utf8 = g_ptr_array_index(list, idx);
  86         assert(str_utf8 != NULL);
  87
  88         str = utf8_to_locale(str_utf8);
  89         g_snprintf(buf, BUFSIZE, "[%s]", str);
  90         g_free(str);
  91
  92         return buf;
  93 }
  94
  95 static void
  96 paint(void);
  97
  98 static void
  99 artist_repaint(void)
 100 {
 101         paint();
 102         wrefresh(browser.lw->w);
 103 }
 104
 105 static void
 106 artist_repaint_if_active(void)
 107 {
 108         if (screen_is_visible(&screen_artist))
 109                 artist_repaint();
 110 }
 111
 112 /* the playlist have been updated -> fix highlights */
 113 static void
 114 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
 115 {
 116         browser_playlist_changed(&browser, c, event, data);
 117
 118         artist_repaint_if_active();
 119 }
 120
 121 static GPtrArray *
 122 g_list_to_ptr_array(GList *in)
 123 {
 124         GPtrArray *out = g_ptr_array_sized_new(g_list_length(in));
 125         GList *head = in;
 126
 127         while (in != NULL) {
 128                 g_ptr_array_add(out, in->data);
 129                 in = g_list_next(in);
 130         }
 131
 132         g_list_free(head);
 133         return out;
 134 }
 135
 136 static void
 137 string_array_free(GPtrArray *array)
 138 {
 139         unsigned i;
 140
 141         for (i = 0; i < array->len; ++i) {
 142                 char *value = g_ptr_array_index(array, i);
 143                 free(value);
 144         }
 145
 146         g_ptr_array_free(array, TRUE);
 147 }
 148
 149 static void
 150 free_lists(struct mpdclient *c)
 151 {
 152         if (artist_list != NULL) {
 153                 string_array_free(artist_list);
 154                 artist_list = NULL;
 155         }
 156
 157         if (album_list != NULL) {
 158                 string_array_free(album_list);
 159                 album_list = NULL;
 160         }
 161
 162         if (browser.filelist) {
 163                 if (c != NULL)
 164                         mpdclient_remove_playlist_callback(c, playlist_changed_callback);
 165                 filelist_free(browser.filelist);
 166                 browser.filelist = NULL;
 167         }
 168 }
 169
 170 static void
 171 load_artist_list(struct mpdclient *c)
 172 {
 173         GList *list;
 174
 175         assert(mode == LIST_ARTISTS);
 176         assert(artist == NULL);
 177         assert(album == NULL);
 178         assert(artist_list == NULL);
 179         assert(album_list == NULL);
 180         assert(browser.filelist == NULL);
 181
 182         list = mpdclient_get_artists(c);
 183         /* sort list */
 184         list = g_list_sort(list, compare_utf8);
 185
 186         artist_list = g_list_to_ptr_array(list);
 187 }
 188
 189 static void
 190 load_album_list(struct mpdclient *c)
 191 {
 192         GList *list;
 193
 194         assert(mode == LIST_ALBUMS);
 195         assert(artist != NULL);
 196         assert(album == NULL);
 197         assert(album_list == NULL);
 198         assert(browser.filelist == NULL);
 199
 200         list = mpdclient_get_albums(c, artist);
 201         /* sort list */
 202         list = g_list_sort(list, compare_utf8);
 203
 204         album_list = g_list_to_ptr_array(list);
 205 }
 206
 207 static void
 208 load_song_list(struct mpdclient *c)
 209 {
 210         assert(mode == LIST_SONGS);
 211         assert(artist != NULL);
 212         assert(album != NULL);
 213         assert(browser.filelist == NULL);
 214
 215         if (album[0] == 0)
 216                 browser.filelist =
 217                         mpdclient_filelist_search(c, TRUE,
 218                                                   MPD_TABLE_ARTIST,
 219                                                   artist);
 220         else
 221                 browser.filelist =
 222                         mpdclient_filelist_search(c, TRUE,
 223                                                   MPD_TABLE_ALBUM,
 224                                                   album);
 225         if (browser.filelist == NULL)
 226                 browser.filelist = filelist_new(NULL);
 227
 228         /* add a dummy entry for ".." */
 229         filelist_prepend(browser.filelist, NULL);
 230
 231         /* install playlist callback and fix highlights */
 232         sync_highlights(c, browser.filelist);
 233         mpdclient_install_playlist_callback(c, playlist_changed_callback);
 234 }
 235
 236 static void
 237 free_state(struct mpdclient *c)
 238 {
 239         g_free(artist);
 240         g_free(album);
 241         artist = NULL;
 242         album = NULL;
 243
 244         free_lists(c);
 245 }
 246
 247 static void
 248 open_artist_list(struct mpdclient *c)
 249 {
 250         free_state(c);
 251
 252         mode = LIST_ARTISTS;
 253         load_artist_list(c);
 254 }
 255
 256 static void
 257 open_album_list(struct mpdclient *c, char *_artist)
 258 {
 259         assert(_artist != NULL);
 260
 261         free_state(c);
 262
 263         mode = LIST_ALBUMS;
 264         artist = _artist;
 265         load_album_list(c);
 266 }
 267
 268 static void
 269 open_song_list(struct mpdclient *c, char *_artist, char *_album)
 270 {
 271         assert(_artist != NULL);
 272         assert(_album != NULL);
 273
 274         free_state(c);
 275
 276         mode = LIST_SONGS;
 277         artist = _artist;
 278         album = _album;
 279         load_song_list(c);
 280 }
 281
 282 static void
 283 reload_lists(struct mpdclient *c)
 284 {
 285         free_lists(c);
 286
 287         switch (mode) {
 288         case LIST_ARTISTS:
 289                 load_artist_list(c);
 290                 break;
 291
 292         case LIST_ALBUMS:
 293                 load_album_list(c);
 294                 break;
 295
 296         case LIST_SONGS:
 297                 load_song_list(c);
 298                 break;
 299         }
 300 }
 301
 302 /* db updated */
 303 static void
 304 browse_callback(mpdclient_t *c, int event, mpd_unused gpointer data)
 305 {
 306         switch(event) {
 307         case BROWSE_DB_UPDATED:
 308                 reload_lists(c);
 309                 break;
 310         default:
 311                 break;
 312         }
 313
 314         artist_repaint_if_active();
 315 }
 316
 317 static void
 318 init(WINDOW *w, int cols, int rows)
 319 {
 320         browser.lw = list_window_init(w, cols, rows);
 321         artist = NULL;
 322         album = NULL;
 323 }
 324
 325 static void
 326 quit(void)
 327 {
 328         free_state(NULL);
 329         list_window_free(browser.lw);
 330 }
 331
 332 static void
 333 open(mpdclient_t *c)
 334 {
 335         static gboolean callback_installed = FALSE;
 336
 337         if (artist_list == NULL && album_list == NULL &&
 338             browser.filelist == NULL)
 339                 reload_lists(c);
 340         if (!callback_installed) {
 341                 mpdclient_install_browse_callback(c, browse_callback);
 342                 callback_installed = TRUE;
 343         }
 344 }
 345
 346 static void
 347 resize(int cols, int rows)
 348 {
 349         browser.lw->cols = cols;
 350         browser.lw->rows = rows;
 351 }
 352
 353 static void
 354 paint(void)
 355 {
 356         if (browser.filelist) {
 357                 list_window_paint(browser.lw, browser_lw_callback,
 358                                   browser.filelist);
 359         } else if (album_list != NULL)
 360                 list_window_paint(browser.lw, artist_lw_callback, album_list);
 361         else if (artist_list != NULL)
 362                 list_window_paint(browser.lw, artist_lw_callback, artist_list);
 363         else {
 364                 wmove(browser.lw->w, 0, 0);
 365                 wclrtobot(browser.lw->w);
 366         }
 367 }
 368
 369 static const char *
 370 get_title(char *str, size_t size)
 371 {
 372         char *s1, *s2;
 373
 374         switch(mode) {
 375         case LIST_ARTISTS:
 376                 g_snprintf(str, size, _("All artists"));
 377                 break;
 378
 379         case LIST_ALBUMS:
 380                 s1 = utf8_to_locale(artist);
 381                 g_snprintf(str, size, _("Albums of artist: %s"), s1);
 382                 g_free(s1);
 383                 break;
 384
 385         case LIST_SONGS:
 386                 s1 = utf8_to_locale(artist);
 387                 if (*album != 0) {
 388                         s2 = utf8_to_locale(album);
 389                         g_snprintf(str, size,
 390                                    _("Album: %s - %s"), s1, s2);
 391                         g_free(s2);
 392                 } else
 393                         g_snprintf(str, size,
 394                                    _("All tracks of artist: %s"), s1);
 395                 g_free(s1);
 396                 break;
 397         }
 398
 399         return str;
 400 }
 401
 402 static void
 403 add_query(mpdclient_t *c, int table, char *_filter)
 404 {
 405         char *str;
 406         mpdclient_filelist_t *addlist;
 407
 408         assert(filter != NULL);
 409
 410         str = utf8_to_locale(_filter);
 411         if (table== MPD_TABLE_ALBUM)
 412                 screen_status_printf("Adding album %s...", str);
 413         else
 414                 screen_status_printf("Adding %s...", str);
 415         g_free(str);
 416
 417         addlist = mpdclient_filelist_search(c, TRUE, table, _filter);
 418         if (addlist) {
 419                 mpdclient_filelist_add_all(c, addlist);
 420                 filelist_free(addlist);
 421         }
 422 }
 423
 424 static unsigned
 425 metalist_length(void)
 426 {
 427         assert(mode != LIST_ARTISTS || artist_list != NULL);
 428         assert(mode != LIST_ALBUMS || album_list != NULL);
 429
 430         return mode == LIST_ALBUMS
 431                 ? album_list->len + 2
 432                 : artist_list->len;
 433 }
 434
 435 static int
 436 artist_lw_cmd(struct mpdclient *c, command_t cmd)
 437 {
 438         switch (mode) {
 439         case LIST_ARTISTS:
 440         case LIST_ALBUMS:
 441                 return list_window_cmd(browser.lw, metalist_length(), cmd);
 442
 443         case LIST_SONGS:
 444                 return browser_cmd(&browser, c, cmd);
 445         }
 446
 447         assert(0);
 448         return 0;
 449 }
 450
 451 static int
 452 string_array_find(GPtrArray *array, const char *value)
 453 {
 454         guint i;
 455
 456         for (i = 0; i < array->len; ++i)
 457                 if (strcmp((const char*)g_ptr_array_index(array, i),
 458                            value) == 0)
 459                         return i;
 460
 461         return -1;
 462 }
 463
 464 static bool
 465 artist_cmd(mpdclient_t *c, command_t cmd)
 466 {
 467         char *selected;
 468         char *old;
 469         int idx;
 470
 471         switch(cmd) {
 472         case CMD_PLAY:
 473                 switch (mode) {
 474                 case LIST_ARTISTS:
 475                         selected = g_ptr_array_index(artist_list,
 476                                                      browser.lw->selected);
 477                         open_album_list(c, g_strdup(selected));
 478                         list_window_reset(browser.lw);
 479
 480                         artist_repaint();
 481                         return true;
 482
 483                 case LIST_ALBUMS:
 484                         if (browser.lw->selected == 0) {
 485                                 /* handle ".." */
 486                                 old = g_strdup(artist);
 487
 488                                 open_artist_list(c);
 489                                 list_window_reset(browser.lw);
 490                                 /* restore previous list window state */
 491                                 idx = string_array_find(artist_list, old);
 492                                 g_free(old);
 493
 494                                 if (idx >= 0) {
 495                                         list_window_set_selected(browser.lw, idx);
 496                                         list_window_center(browser.lw,
 497                                                            artist_list->len, idx);
 498                                 }
 499                         } else if (browser.lw->selected == album_list->len + 1) {
 500                                 /* handle "show all" */
 501                                 open_song_list(c, g_strdup(artist), g_strdup("\0"));
 502                                 list_window_reset(browser.lw);
 503                         } else {
 504                                 /* select album */
 505                                 selected = g_ptr_array_index(album_list,
 506                                                              browser.lw->selected - 1);
 507                                 open_song_list(c, g_strdup(artist), g_strdup(selected));
 508                                 list_window_reset(browser.lw);
 509                         }
 510
 511                         artist_repaint();
 512                         return true;
 513
 514                 case LIST_SONGS:
 515                         if (browser.lw->selected == 0) {
 516                                 /* handle ".." */
 517                                 old = g_strdup(album);
 518
 519                                 open_album_list(c, g_strdup(artist));
 520                                 list_window_reset(browser.lw);
 521                                 /* restore previous list window state */
 522                                 idx = *old == 0
 523                                         ? (int)album_list->len
 524                                         : string_array_find(album_list, old);
 525                                 g_free(old);
 526
 527                                 if (idx >= 0) {
 528                                         ++idx;
 529                                         list_window_set_selected(browser.lw, idx);
 530                                         list_window_center(browser.lw,
 531                                                            album_list->len, idx);
 532                                 }
 533
 534                                 artist_repaint();
 535                                 return true;
 536                         }
 537                         break;
 538                 }
 539                 break;
 540
 541                 /* FIXME? CMD_GO_* handling duplicates code from CMD_PLAY */
 542
 543         case CMD_GO_PARENT_DIRECTORY:
 544                 switch (mode) {
 545                 case LIST_ARTISTS:
 546                         break;
 547
 548                 case LIST_ALBUMS:
 549                         old = g_strdup(artist);
 550
 551                         open_artist_list(c);
 552                         list_window_reset(browser.lw);
 553                         /* restore previous list window state */
 554                         idx = string_array_find(artist_list, old);
 555                         g_free(old);
 556
 557                         if (idx >= 0) {
 558                                 list_window_set_selected(browser.lw, idx);
 559                                 list_window_center(browser.lw,
 560                                                    artist_list->len, idx);
 561                         }
 562                         break;
 563
 564                 case LIST_SONGS:
 565                         old = g_strdup(album);
 566
 567                         open_album_list(c, g_strdup(artist));
 568                         list_window_reset(browser.lw);
 569                         /* restore previous list window state */
 570                         idx = *old == 0
 571                                 ? (int)album_list->len
 572                                 : string_array_find(album_list, old);
 573                         g_free(old);
 574
 575                         if (idx >= 0) {
 576                                 ++idx;
 577                                 list_window_set_selected(browser.lw, idx);
 578                                 list_window_center(browser.lw,
 579                                                    album_list->len, idx);
 580                         }
 581                         break;
 582                 }
 583
 584                 artist_repaint();
 585                 break;
 586
 587         case CMD_GO_ROOT_DIRECTORY:
 588                 switch (mode) {
 589                 case LIST_ARTISTS:
 590                         break;
 591
 592                 case LIST_ALBUMS:
 593                 case LIST_SONGS:
 594                         open_artist_list(c);
 595                         list_window_reset(browser.lw);
 596                         /* restore first list window state (pop while returning true) */
 597                         /* XXX */
 598                         break;
 599                 }
 600
 601                 artist_repaint();
 602                 break;
 603
 604         case CMD_SELECT:
 605         case CMD_ADD:
 606                 switch(mode) {
 607                 case LIST_ARTISTS:
 608                         selected = g_ptr_array_index(artist_list,
 609                                                      browser.lw->selected);
 610                         add_query(c, MPD_TABLE_ARTIST, selected);
 611                         cmd = CMD_LIST_NEXT; /* continue and select next item... */
 612                         break;
 613
 614                 case LIST_ALBUMS:
 615                         if (browser.lw->selected == album_list->len + 1)
 616                                 add_query(c, MPD_TABLE_ARTIST, artist);
 617                         else if (browser.lw->selected > 0) {
 618                                 selected = g_ptr_array_index(album_list,
 619                                                              browser.lw->selected - 1);
 620                                 add_query(c, MPD_TABLE_ALBUM, selected);
 621                                 cmd = CMD_LIST_NEXT; /* continue and select next item... */
 622                         }
 623                         break;
 624
 625                 case LIST_SONGS:
 626                         /* handled by browser_cmd() */
 627                         break;
 628                 }
 629                 break;
 630
 631                 /* continue and update... */
 632         case CMD_SCREEN_UPDATE:
 633                 reload_lists(c);
 634                 screen_status_printf(_("Screen updated!"));
 635                 return false;
 636
 637         case CMD_LIST_FIND:
 638         case CMD_LIST_RFIND:
 639         case CMD_LIST_FIND_NEXT:
 640         case CMD_LIST_RFIND_NEXT:
 641                 switch (mode) {
 642                 case LIST_ARTISTS:
 643                         screen_find(browser.lw, artist_list->len,
 644                                     cmd, artist_lw_callback, artist_list);
 645                         artist_repaint();
 646                         return true;
 647
 648                 case LIST_ALBUMS:
 649                         screen_find(browser.lw, album_list->len + 2,
 650                                     cmd, artist_lw_callback, album_list);
 651                         artist_repaint();
 652                         return true;
 653
 654                 case LIST_SONGS:
 655                         /* handled by browser_cmd() */
 656                         break;
 657                 }
 658
 659                 break;
 660
 661         default:
 662                 break;
 663         }
 664
 665         if (artist_lw_cmd(c, cmd)) {
 666                 if (screen_is_visible(&screen_artist))
 667                         artist_repaint();
 668                 return true;
 669         }
 670
 671         return false;
 672 }
 673
 674 const struct screen_functions screen_artist = {
 675         .init = init,
 676         .exit = quit,
 677         .open = open,
 678         .resize = resize,
 679         .paint = paint,
 680         .cmd = artist_cmd,
 681         .get_title = get_title,
 682 };