src/screen_artist.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "screen_artist.h"
  21 #include "screen_interface.h"
  22 #include "screen_message.h"
  23 #include "screen_find.h"
  24 #include "screen.h"
  25 #include "i18n.h"
  26 #include "charset.h"
  27 #include "mpdclient.h"
  28 #include "screen_browser.h"
  29 #include "filelist.h"
  30
  31 #include <assert.h>
  32 #include <string.h>
  33 #include <glib.h>
  34
  35 #define BUFSIZE 1024
  36
  37 typedef enum { LIST_ARTISTS, LIST_ALBUMS, LIST_SONGS } artist_mode_t;
  38
  39 static artist_mode_t mode = LIST_ARTISTS;
  40 static GPtrArray *artist_list, *album_list;
  41 static char *artist = NULL;
  42 static char *album  = NULL;
  43
  44 static struct screen_browser browser;
  45
  46 static gint
  47 compare_utf8(gconstpointer s1, gconstpointer s2)
  48 {
  49         const char *const*t1 = s1, *const*t2 = s2;
  50         char *key1, *key2;
  51         int n;
  52
  53         key1 = g_utf8_collate_key(*t1,-1);
  54         key2 = g_utf8_collate_key(*t2,-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 screen_artist_lw_callback(unsigned idx, 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         assert(idx < list->len);
  83
  84         str_utf8 = g_ptr_array_index(list, idx);
  85         assert(str_utf8 != NULL);
  86
  87         str = utf8_to_locale(str_utf8);
  88         g_snprintf(buf, BUFSIZE, "[%s]", str);
  89         g_free(str);
  90
  91         return buf;
  92 }
  93
  94 static void
  95 screen_artist_paint(void);
  96
  97 static void
  98 artist_repaint(void)
  99 {
 100         screen_artist_paint();
 101         wrefresh(browser.lw->w);
 102 }
 103
 104 static void
 105 string_array_free(GPtrArray *array)
 106 {
 107         unsigned i;
 108
 109         for (i = 0; i < array->len; ++i) {
 110                 char *value = g_ptr_array_index(array, i);
 111                 g_free(value);
 112         }
 113
 114         g_ptr_array_free(array, TRUE);
 115 }
 116
 117 static void
 118 free_lists(void)
 119 {
 120         if (artist_list != NULL) {
 121                 string_array_free(artist_list);
 122                 artist_list = NULL;
 123         }
 124
 125         if (album_list != NULL) {
 126                 string_array_free(album_list);
 127                 album_list = NULL;
 128         }
 129
 130         if (browser.filelist) {
 131                 filelist_free(browser.filelist);
 132                 browser.filelist = NULL;
 133         }
 134 }
 135
 136 static void
 137 recv_tag_values(struct mpd_connection *connection, enum mpd_tag_type tag,
 138                 GPtrArray *list)
 139 {
 140         struct mpd_pair *pair;
 141
 142         while ((pair = mpd_recv_pair_tag(connection, tag)) != NULL) {
 143                 g_ptr_array_add(list, g_strdup(pair->value));
 144                 mpd_return_pair(connection, pair);
 145         }
 146 }
 147
 148 static void
 149 load_artist_list(struct mpdclient *c)
 150 {
 151         struct mpd_connection *connection = mpdclient_get_connection(c);
 152
 153         assert(mode == LIST_ARTISTS);
 154         assert(artist == NULL);
 155         assert(album == NULL);
 156         assert(artist_list == NULL);
 157         assert(album_list == NULL);
 158         assert(browser.filelist == NULL);
 159
 160         artist_list = g_ptr_array_new();
 161
 162         if (connection != NULL) {
 163                 mpd_search_db_tags(connection, MPD_TAG_ARTIST);
 164                 mpd_search_commit(connection);
 165                 recv_tag_values(connection, MPD_TAG_ARTIST, artist_list);
 166
 167                 if (!mpd_response_finish(connection))
 168                         mpdclient_handle_error(c);
 169         }
 170
 171         /* sort list */
 172         g_ptr_array_sort(artist_list, compare_utf8);
 173         list_window_set_length(browser.lw, artist_list->len);
 174 }
 175
 176 static void
 177 load_album_list(struct mpdclient *c)
 178 {
 179         struct mpd_connection *connection = mpdclient_get_connection(c);
 180
 181         assert(mode == LIST_ALBUMS);
 182         assert(artist != NULL);
 183         assert(album == NULL);
 184         assert(album_list == NULL);
 185         assert(browser.filelist == NULL);
 186
 187         album_list = g_ptr_array_new();
 188
 189         if (connection != NULL) {
 190                 mpd_search_db_tags(connection, MPD_TAG_ALBUM);
 191                 mpd_search_add_tag_constraint(connection,
 192                                               MPD_OPERATOR_DEFAULT,
 193                                               MPD_TAG_ARTIST, artist);
 194                 mpd_search_commit(connection);
 195
 196                 recv_tag_values(connection, MPD_TAG_ALBUM, album_list);
 197
 198                 if (!mpd_response_finish(connection))
 199                         mpdclient_handle_error(c);
 200         }
 201
 202         /* sort list */
 203         g_ptr_array_sort(album_list, compare_utf8);
 204
 205         list_window_set_length(browser.lw, album_list->len + 2);
 206 }
 207
 208 static void
 209 load_song_list(struct mpdclient *c)
 210 {
 211         struct mpd_connection *connection = mpdclient_get_connection(c);
 212
 213         assert(mode == LIST_SONGS);
 214         assert(artist != NULL);
 215         assert(album != NULL);
 216         assert(browser.filelist == NULL);
 217
 218         browser.filelist = filelist_new();
 219         /* add a dummy entry for ".." */
 220         filelist_append(browser.filelist, NULL);
 221
 222         if (connection != NULL) {
 223                 mpd_search_db_songs(connection, true);
 224                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 225                                               MPD_TAG_ARTIST, artist);
 226                 if (album[0] != 0)
 227                         mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 228                                                       MPD_TAG_ALBUM, album);
 229                 mpd_search_commit(connection);
 230
 231                 filelist_recv(browser.filelist, connection);
 232
 233                 if (!mpd_response_finish(connection))
 234                         mpdclient_handle_error(c);
 235         }
 236
 237         /* fix highlights */
 238         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 239         list_window_set_length(browser.lw, filelist_length(browser.filelist));
 240 }
 241
 242 static void
 243 free_state(void)
 244 {
 245         g_free(artist);
 246         g_free(album);
 247         artist = NULL;
 248         album = NULL;
 249
 250         free_lists();
 251 }
 252
 253 static void
 254 open_artist_list(struct mpdclient *c)
 255 {
 256         free_state();
 257
 258         mode = LIST_ARTISTS;
 259         load_artist_list(c);
 260 }
 261
 262 static void
 263 open_album_list(struct mpdclient *c, char *_artist)
 264 {
 265         assert(_artist != NULL);
 266
 267         free_state();
 268
 269         mode = LIST_ALBUMS;
 270         artist = _artist;
 271         load_album_list(c);
 272 }
 273
 274 static void
 275 open_song_list(struct mpdclient *c, char *_artist, char *_album)
 276 {
 277         assert(_artist != NULL);
 278         assert(_album != NULL);
 279
 280         free_state();
 281
 282         mode = LIST_SONGS;
 283         artist = _artist;
 284         album = _album;
 285         load_song_list(c);
 286 }
 287
 288 static void
 289 reload_lists(struct mpdclient *c)
 290 {
 291         free_lists();
 292
 293         switch (mode) {
 294         case LIST_ARTISTS:
 295                 load_artist_list(c);
 296                 break;
 297
 298         case LIST_ALBUMS:
 299                 load_album_list(c);
 300                 break;
 301
 302         case LIST_SONGS:
 303                 load_song_list(c);
 304                 break;
 305         }
 306 }
 307
 308 static void
 309 screen_artist_init(WINDOW *w, int cols, int rows)
 310 {
 311         browser.lw = list_window_init(w, cols, rows);
 312         artist = NULL;
 313         album = NULL;
 314 }
 315
 316 static void
 317 screen_artist_quit(void)
 318 {
 319         free_state();
 320         list_window_free(browser.lw);
 321 }
 322
 323 static void
 324 screen_artist_open(struct mpdclient *c)
 325 {
 326         if (artist_list == NULL && album_list == NULL &&
 327             browser.filelist == NULL)
 328                 reload_lists(c);
 329 }
 330
 331 static void
 332 screen_artist_resize(int cols, int rows)
 333 {
 334         list_window_resize(browser.lw, cols, rows);
 335 }
 336
 337 static void
 338 screen_artist_paint(void)
 339 {
 340         if (browser.filelist) {
 341                 screen_browser_paint(&browser);
 342         } else if (album_list != NULL)
 343                 list_window_paint(browser.lw, screen_artist_lw_callback,
 344                                   album_list);
 345         else if (artist_list != NULL)
 346                 list_window_paint(browser.lw, screen_artist_lw_callback,
 347                                   artist_list);
 348         else {
 349                 wmove(browser.lw->w, 0, 0);
 350                 wclrtobot(browser.lw->w);
 351         }
 352 }
 353
 354 static const char *
 355 screen_artist_get_title(char *str, size_t size)
 356 {
 357         char *s1, *s2;
 358
 359         switch(mode) {
 360         case LIST_ARTISTS:
 361                 g_snprintf(str, size, _("All artists"));
 362                 break;
 363
 364         case LIST_ALBUMS:
 365                 s1 = utf8_to_locale(artist);
 366                 g_snprintf(str, size, _("Albums of artist: %s"), s1);
 367                 g_free(s1);
 368                 break;
 369
 370         case LIST_SONGS:
 371                 s1 = utf8_to_locale(artist);
 372                 if (*album != 0) {
 373                         s2 = utf8_to_locale(album);
 374                         g_snprintf(str, size,
 375                                    _("Album: %s - %s"), s1, s2);
 376                         g_free(s2);
 377                 } else
 378                         g_snprintf(str, size,
 379                                    _("All tracks of artist: %s"), s1);
 380                 g_free(s1);
 381                 break;
 382         }
 383
 384         return str;
 385 }
 386
 387 static void
 388 screen_artist_update(struct mpdclient *c)
 389 {
 390         if (browser.filelist == NULL)
 391                 return;
 392
 393         if (c->events & MPD_IDLE_DATABASE)
 394                 /* the db has changed -> update the list */
 395                 reload_lists(c);
 396
 397         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_QUEUE))
 398                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 399
 400         if (c->events & (MPD_IDLE_DATABASE
 401 #ifndef NCMPC_MINI
 402                          | MPD_IDLE_QUEUE
 403 #endif
 404                          ))
 405                 artist_repaint();
 406 }
 407
 408 static void
 409 add_query(struct mpdclient *c, enum mpd_tag_type table, char *_filter)
 410 {
 411         struct mpd_connection *connection = mpdclient_get_connection(c);
 412         char *str;
 413         struct filelist *addlist;
 414
 415         assert(filter != NULL);
 416
 417         if (connection == NULL)
 418                 return;
 419
 420         str = utf8_to_locale(_filter);
 421         if (table == MPD_TAG_ALBUM)
 422                 screen_status_printf("Adding album %s...", str);
 423         else
 424                 screen_status_printf("Adding %s...", str);
 425         g_free(str);
 426
 427         mpd_search_db_songs(connection, true);
 428         mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 429                                       table, _filter);
 430         mpd_search_commit(connection);
 431
 432         addlist = filelist_new_recv(connection);
 433
 434         if (mpd_response_finish(connection))
 435                 mpdclient_filelist_add_all(c, addlist);
 436         else
 437                 mpdclient_handle_error(c);
 438
 439         filelist_free(addlist);
 440 }
 441
 442 static int
 443 screen_artist_lw_cmd(struct mpdclient *c, command_t cmd)
 444 {
 445         switch (mode) {
 446         case LIST_ARTISTS:
 447         case LIST_ALBUMS:
 448                 return list_window_cmd(browser.lw, cmd);
 449
 450         case LIST_SONGS:
 451                 return browser_cmd(&browser, c, cmd);
 452         }
 453
 454         assert(0);
 455         return 0;
 456 }
 457
 458 static int
 459 string_array_find(GPtrArray *array, const char *value)
 460 {
 461         guint i;
 462
 463         for (i = 0; i < array->len; ++i)
 464                 if (strcmp((const char*)g_ptr_array_index(array, i),
 465                            value) == 0)
 466                         return i;
 467
 468         return -1;
 469 }
 470
 471 static bool
 472 screen_artist_cmd(struct mpdclient *c, command_t cmd)
 473 {
 474         struct list_window_range range;
 475         char *selected;
 476         char *old;
 477         int idx;
 478
 479         switch(cmd) {
 480         case CMD_PLAY:
 481                 switch (mode) {
 482                 case LIST_ARTISTS:
 483                         if (browser.lw->selected >= artist_list->len)
 484                                 return true;
 485
 486                         selected = g_ptr_array_index(artist_list,
 487                                                      browser.lw->selected);
 488                         open_album_list(c, g_strdup(selected));
 489                         list_window_reset(browser.lw);
 490
 491                         artist_repaint();
 492                         return true;
 493
 494                 case LIST_ALBUMS:
 495                         if (browser.lw->selected == 0) {
 496                                 /* handle ".." */
 497                                 old = g_strdup(artist);
 498
 499                                 open_artist_list(c);
 500                                 list_window_reset(browser.lw);
 501                                 /* restore previous list window state */
 502                                 idx = string_array_find(artist_list, old);
 503                                 g_free(old);
 504
 505                                 if (idx >= 0) {
 506                                         list_window_set_cursor(browser.lw, idx);
 507                                         list_window_center(browser.lw, idx);
 508                                 }
 509                         } else if (browser.lw->selected == album_list->len + 1) {
 510                                 /* handle "show all" */
 511                                 open_song_list(c, g_strdup(artist), g_strdup("\0"));
 512                                 list_window_reset(browser.lw);
 513                         } else {
 514                                 /* select album */
 515                                 selected = g_ptr_array_index(album_list,
 516                                                              browser.lw->selected - 1);
 517                                 open_song_list(c, g_strdup(artist), g_strdup(selected));
 518                                 list_window_reset(browser.lw);
 519                         }
 520
 521                         artist_repaint();
 522                         return true;
 523
 524                 case LIST_SONGS:
 525                         if (browser.lw->selected == 0) {
 526                                 /* handle ".." */
 527                                 old = g_strdup(album);
 528
 529                                 open_album_list(c, g_strdup(artist));
 530                                 list_window_reset(browser.lw);
 531                                 /* restore previous list window state */
 532                                 idx = *old == 0
 533                                         ? (int)album_list->len
 534                                         : string_array_find(album_list, old);
 535                                 g_free(old);
 536
 537                                 if (idx >= 0) {
 538                                         ++idx;
 539                                         list_window_set_cursor(browser.lw, idx);
 540                                         list_window_center(browser.lw, idx);
 541                                 }
 542
 543                                 artist_repaint();
 544                                 return true;
 545                         }
 546                         break;
 547                 }
 548                 break;
 549
 550                 /* FIXME? CMD_GO_* handling duplicates code from CMD_PLAY */
 551
 552         case CMD_GO_PARENT_DIRECTORY:
 553                 switch (mode) {
 554                 case LIST_ARTISTS:
 555                         break;
 556
 557                 case LIST_ALBUMS:
 558                         old = g_strdup(artist);
 559
 560                         open_artist_list(c);
 561                         list_window_reset(browser.lw);
 562                         /* restore previous list window state */
 563                         idx = string_array_find(artist_list, old);
 564                         g_free(old);
 565
 566                         if (idx >= 0) {
 567                                 list_window_set_cursor(browser.lw, idx);
 568                                 list_window_center(browser.lw, idx);
 569                         }
 570                         break;
 571
 572                 case LIST_SONGS:
 573                         old = g_strdup(album);
 574
 575                         open_album_list(c, g_strdup(artist));
 576                         list_window_reset(browser.lw);
 577                         /* restore previous list window state */
 578                         idx = *old == 0
 579                                 ? (int)album_list->len
 580                                 : string_array_find(album_list, old);
 581                         g_free(old);
 582
 583                         if (idx >= 0) {
 584                                 ++idx;
 585                                 list_window_set_cursor(browser.lw, idx);
 586                                 list_window_center(browser.lw, idx);
 587                         }
 588                         break;
 589                 }
 590
 591                 artist_repaint();
 592                 break;
 593
 594         case CMD_GO_ROOT_DIRECTORY:
 595                 switch (mode) {
 596                 case LIST_ARTISTS:
 597                         break;
 598
 599                 case LIST_ALBUMS:
 600                 case LIST_SONGS:
 601                         open_artist_list(c);
 602                         list_window_reset(browser.lw);
 603                         /* restore first list window state (pop while returning true) */
 604                         /* XXX */
 605                         break;
 606                 }
 607
 608                 artist_repaint();
 609                 break;
 610
 611         case CMD_SELECT:
 612         case CMD_ADD:
 613                 switch(mode) {
 614                 case LIST_ARTISTS:
 615                         if (browser.lw->selected >= artist_list->len)
 616                                 return true;
 617
 618                         list_window_get_range(browser.lw, &range);
 619                         for (unsigned i = range.start; i < range.end; ++i) {
 620                                 selected = g_ptr_array_index(artist_list, i);
 621                                 add_query(c, MPD_TAG_ARTIST, selected);
 622                                 cmd = CMD_LIST_NEXT; /* continue and select next item... */
 623                         }
 624                         break;
 625
 626                 case LIST_ALBUMS:
 627                         list_window_get_range(browser.lw, &range);
 628                         for (unsigned i = range.start; i < range.end; ++i) {
 629                                 if(i == album_list->len + 1)
 630                                         add_query(c, MPD_TAG_ARTIST, artist);
 631                                 else if (i > 0)
 632                                 {
 633                                         selected = g_ptr_array_index(album_list,
 634                                                                      browser.lw->selected - 1);
 635                                         add_query(c, MPD_TAG_ALBUM, selected);
 636                                         cmd = CMD_LIST_NEXT; /* continue and select next item... */
 637                                 }
 638                         }
 639                         break;
 640
 641                 case LIST_SONGS:
 642                         /* handled by browser_cmd() */
 643                         break;
 644                 }
 645                 break;
 646
 647                 /* continue and update... */
 648         case CMD_SCREEN_UPDATE:
 649                 reload_lists(c);
 650                 return false;
 651
 652         case CMD_LIST_FIND:
 653         case CMD_LIST_RFIND:
 654         case CMD_LIST_FIND_NEXT:
 655         case CMD_LIST_RFIND_NEXT:
 656                 switch (mode) {
 657                 case LIST_ARTISTS:
 658                         screen_find(browser.lw, cmd,
 659                                     screen_artist_lw_callback, artist_list);
 660                         artist_repaint();
 661                         return true;
 662
 663                 case LIST_ALBUMS:
 664                         screen_find(browser.lw, cmd,
 665                                     screen_artist_lw_callback, album_list);
 666                         artist_repaint();
 667                         return true;
 668
 669                 case LIST_SONGS:
 670                         /* handled by browser_cmd() */
 671                         break;
 672                 }
 673         case CMD_LIST_JUMP:
 674                 switch (mode) {
 675                 case LIST_ARTISTS:
 676                         screen_jump(browser.lw, screen_artist_lw_callback,
 677                                     NULL, artist_list);
 678                         artist_repaint();
 679                         return true;
 680
 681                 case LIST_ALBUMS:
 682                         screen_jump(browser.lw, screen_artist_lw_callback,
 683                                     NULL, album_list);
 684                         artist_repaint();
 685                         return true;
 686
 687                 case LIST_SONGS:
 688                         /* handled by browser_cmd() */
 689                         break;
 690                 }
 691
 692                 break;
 693
 694         default:
 695                 break;
 696         }
 697
 698         if (screen_artist_lw_cmd(c, cmd)) {
 699                 if (screen_is_visible(&screen_artist))
 700                         artist_repaint();
 701                 return true;
 702         }
 703
 704         return false;
 705 }
 706
 707 const struct screen_functions screen_artist = {
 708         .init = screen_artist_init,
 709         .exit = screen_artist_quit,
 710         .open = screen_artist_open,
 711         .resize = screen_artist_resize,
 712         .paint = screen_artist_paint,
 713         .update = screen_artist_update,
 714         .cmd = screen_artist_cmd,
 715         .get_title = screen_artist_get_title,
 716 };