src/screen_artist.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 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_browser.h"
  25 #include "screen.h"
  26 #include "i18n.h"
  27 #include "charset.h"
  28 #include "mpdclient.h"
  29 #include "screen_browser.h"
  30 #include "filelist.h"
  31
  32 #include <assert.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 static char ALL_TRACKS[] = "";
  45
  46 static struct screen_browser browser;
  47
  48 static gint
  49 compare_utf8(gconstpointer s1, gconstpointer s2)
  50 {
  51         const char *const*t1 = s1, *const*t2 = s2;
  52         char *key1, *key2;
  53         int n;
  54
  55         key1 = g_utf8_collate_key(*t1,-1);
  56         key2 = g_utf8_collate_key(*t2,-1);
  57         n = strcmp(key1,key2);
  58         g_free(key1);
  59         g_free(key2);
  60         return n;
  61 }
  62
  63 /* list_window callback */
  64 static const char *
  65 screen_artist_lw_callback(unsigned idx, void *data)
  66 {
  67         GPtrArray *list = data;
  68         static char buf[BUFSIZE];
  69         char *str, *str_utf8;
  70
  71         if (mode == LIST_ALBUMS) {
  72                 if (idx == 0)
  73                         return "..";
  74                 else if (idx == list->len + 1)
  75                         return _("All tracks");
  76
  77                 --idx;
  78         }
  79
  80         assert(idx < list->len);
  81
  82         str_utf8 = g_ptr_array_index(list, idx);
  83         assert(str_utf8 != NULL);
  84
  85         str = utf8_to_locale(str_utf8);
  86         g_strlcpy(buf, str, sizeof(buf));
  87         g_free(str);
  88
  89         return buf;
  90 }
  91
  92 static void
  93 screen_artist_paint(void);
  94
  95 static void
  96 artist_repaint(void)
  97 {
  98         screen_artist_paint();
  99         wrefresh(browser.lw->w);
 100 }
 101
 102 static void
 103 string_array_free(GPtrArray *array)
 104 {
 105         unsigned i;
 106
 107         for (i = 0; i < array->len; ++i) {
 108                 char *value = g_ptr_array_index(array, i);
 109                 g_free(value);
 110         }
 111
 112         g_ptr_array_free(array, TRUE);
 113 }
 114
 115 static void
 116 free_lists(void)
 117 {
 118         if (artist_list != NULL) {
 119                 string_array_free(artist_list);
 120                 artist_list = NULL;
 121         }
 122
 123         if (album_list != NULL) {
 124                 string_array_free(album_list);
 125                 album_list = NULL;
 126         }
 127
 128         if (browser.filelist) {
 129                 filelist_free(browser.filelist);
 130                 browser.filelist = NULL;
 131         }
 132 }
 133
 134 static void
 135 recv_tag_values(struct mpd_connection *connection, enum mpd_tag_type tag,
 136                 GPtrArray *list)
 137 {
 138         struct mpd_pair *pair;
 139
 140         while ((pair = mpd_recv_pair_tag(connection, tag)) != NULL) {
 141                 g_ptr_array_add(list, g_strdup(pair->value));
 142                 mpd_return_pair(connection, pair);
 143         }
 144 }
 145
 146 static void
 147 load_artist_list(struct mpdclient *c)
 148 {
 149         struct mpd_connection *connection = mpdclient_get_connection(c);
 150
 151         assert(mode == LIST_ARTISTS);
 152         assert(artist == NULL);
 153         assert(album == NULL);
 154         assert(artist_list == NULL);
 155         assert(album_list == NULL);
 156         assert(browser.filelist == NULL);
 157
 158         artist_list = g_ptr_array_new();
 159
 160         if (connection != NULL) {
 161                 mpd_search_db_tags(connection, MPD_TAG_ARTIST);
 162                 mpd_search_commit(connection);
 163                 recv_tag_values(connection, MPD_TAG_ARTIST, artist_list);
 164
 165                 if (!mpd_response_finish(connection))
 166                         mpdclient_handle_error(c);
 167         }
 168
 169         /* sort list */
 170         g_ptr_array_sort(artist_list, compare_utf8);
 171         list_window_set_length(browser.lw, artist_list->len);
 172 }
 173
 174 static void
 175 load_album_list(struct mpdclient *c)
 176 {
 177         struct mpd_connection *connection = mpdclient_get_connection(c);
 178
 179         assert(mode == LIST_ALBUMS);
 180         assert(artist != NULL);
 181         assert(album == NULL);
 182         assert(album_list == NULL);
 183         assert(browser.filelist == NULL);
 184
 185         album_list = g_ptr_array_new();
 186
 187         if (connection != NULL) {
 188                 mpd_search_db_tags(connection, MPD_TAG_ALBUM);
 189                 mpd_search_add_tag_constraint(connection,
 190                                               MPD_OPERATOR_DEFAULT,
 191                                               MPD_TAG_ARTIST, artist);
 192                 mpd_search_commit(connection);
 193
 194                 recv_tag_values(connection, MPD_TAG_ALBUM, album_list);
 195
 196                 if (!mpd_response_finish(connection))
 197                         mpdclient_handle_error(c);
 198         }
 199
 200         /* sort list */
 201         g_ptr_array_sort(album_list, compare_utf8);
 202
 203         list_window_set_length(browser.lw, album_list->len + 2);
 204 }
 205
 206 static void
 207 load_song_list(struct mpdclient *c)
 208 {
 209         struct mpd_connection *connection = mpdclient_get_connection(c);
 210
 211         assert(mode == LIST_SONGS);
 212         assert(artist != NULL);
 213         assert(album != NULL);
 214         assert(browser.filelist == NULL);
 215
 216         browser.filelist = filelist_new();
 217         /* add a dummy entry for ".." */
 218         filelist_append(browser.filelist, NULL);
 219
 220         if (connection != NULL) {
 221                 mpd_search_db_songs(connection, true);
 222                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 223                                               MPD_TAG_ARTIST, artist);
 224                 if (album != ALL_TRACKS)
 225                         mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 226                                                       MPD_TAG_ALBUM, album);
 227                 mpd_search_commit(connection);
 228
 229                 filelist_recv(browser.filelist, connection);
 230
 231                 if (!mpd_response_finish(connection))
 232                         mpdclient_handle_error(c);
 233         }
 234
 235         /* fix highlights */
 236         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 237         list_window_set_length(browser.lw, filelist_length(browser.filelist));
 238 }
 239
 240 static void
 241 free_state(void)
 242 {
 243         g_free(artist);
 244         if (album != ALL_TRACKS)
 245                 g_free(album);
 246         artist = NULL;
 247         album = NULL;
 248
 249         free_lists();
 250 }
 251
 252 static void
 253 open_artist_list(struct mpdclient *c)
 254 {
 255         free_state();
 256
 257         mode = LIST_ARTISTS;
 258         load_artist_list(c);
 259 }
 260
 261 static void
 262 open_album_list(struct mpdclient *c, char *_artist)
 263 {
 264         assert(_artist != NULL);
 265
 266         free_state();
 267
 268         mode = LIST_ALBUMS;
 269         artist = _artist;
 270         load_album_list(c);
 271 }
 272
 273 static void
 274 open_song_list(struct mpdclient *c, char *_artist, char *_album)
 275 {
 276         assert(_artist != NULL);
 277         assert(_album != NULL);
 278
 279         free_state();
 280
 281         mode = LIST_SONGS;
 282         artist = _artist;
 283         album = _album;
 284         load_song_list(c);
 285 }
 286
 287 static void
 288 reload_lists(struct mpdclient *c)
 289 {
 290         free_lists();
 291
 292         switch (mode) {
 293         case LIST_ARTISTS:
 294                 load_artist_list(c);
 295                 break;
 296
 297         case LIST_ALBUMS:
 298                 load_album_list(c);
 299                 break;
 300
 301         case LIST_SONGS:
 302                 load_song_list(c);
 303                 break;
 304         }
 305 }
 306
 307 static void
 308 screen_artist_init(WINDOW *w, int cols, int rows)
 309 {
 310         browser.lw = list_window_init(w, cols, rows);
 311         artist = NULL;
 312         album = NULL;
 313 }
 314
 315 static void
 316 screen_artist_quit(void)
 317 {
 318         free_state();
 319         list_window_free(browser.lw);
 320 }
 321
 322 static void
 323 screen_artist_open(struct mpdclient *c)
 324 {
 325         if (artist_list == NULL && album_list == NULL &&
 326             browser.filelist == NULL)
 327                 reload_lists(c);
 328 }
 329
 330 static void
 331 screen_artist_resize(int cols, int rows)
 332 {
 333         list_window_resize(browser.lw, cols, rows);
 334 }
 335
 336 /**
 337  * Paint one item in the artist list.
 338  */
 339 static void
 340 paint_artist_callback(WINDOW *w, unsigned i,
 341                       G_GNUC_UNUSED unsigned y, unsigned width,
 342                       bool selected, void *data)
 343 {
 344         GPtrArray *list = data;
 345         char *p = utf8_to_locale(g_ptr_array_index(list, i));
 346
 347         screen_browser_paint_directory(w, width, selected, p);
 348         g_free(p);
 349 }
 350
 351 /**
 352  * Paint one item in the album list.  There are two virtual items
 353  * inserted: at the beginning, there's the special item ".." to go to
 354  * the parent directory, and at the end, there's the item "All tracks"
 355  * to view the tracks of all albums.
 356  */
 357 static void
 358 paint_album_callback(WINDOW *w, unsigned i,
 359                      G_GNUC_UNUSED unsigned y, unsigned width,
 360                      bool selected, void *data)
 361 {
 362         GPtrArray *list = data;
 363         const char *p;
 364         char *q = NULL;
 365
 366         if (i == 0)
 367                 p = "..";
 368         else if (i == list->len + 1)
 369                 p = _("All tracks");
 370         else
 371                 p = q = utf8_to_locale(g_ptr_array_index(list, i - 1));
 372
 373         screen_browser_paint_directory(w, width, selected, p);
 374         g_free(q);
 375 }
 376
 377 static void
 378 screen_artist_paint(void)
 379 {
 380         if (browser.filelist) {
 381                 screen_browser_paint(&browser);
 382         } else if (album_list != NULL)
 383                 list_window_paint2(browser.lw,
 384                                    paint_album_callback, album_list);
 385         else if (artist_list != NULL)
 386                 list_window_paint2(browser.lw,
 387                                    paint_artist_callback, artist_list);
 388         else {
 389                 wmove(browser.lw->w, 0, 0);
 390                 wclrtobot(browser.lw->w);
 391         }
 392 }
 393
 394 static const char *
 395 screen_artist_get_title(char *str, size_t size)
 396 {
 397         char *s1, *s2;
 398
 399         switch(mode) {
 400         case LIST_ARTISTS:
 401                 g_snprintf(str, size, _("All artists"));
 402                 break;
 403
 404         case LIST_ALBUMS:
 405                 s1 = utf8_to_locale(artist);
 406                 g_snprintf(str, size, _("Albums of artist: %s"), s1);
 407                 g_free(s1);
 408                 break;
 409
 410         case LIST_SONGS:
 411                 s1 = utf8_to_locale(artist);
 412
 413                 if (album == ALL_TRACKS)
 414                         g_snprintf(str, size,
 415                                    _("All tracks of artist: %s"), s1);
 416                 else if (*album != 0) {
 417                         s2 = utf8_to_locale(album);
 418                         g_snprintf(str, size, _("Album: %s - %s"), s1, s2);
 419                         g_free(s2);
 420                 } else
 421                         g_snprintf(str, size,
 422                                    _("Tracks of no album of artist: %s"), s1);
 423                 g_free(s1);
 424                 break;
 425         }
 426
 427         return str;
 428 }
 429
 430 static void
 431 screen_artist_update(struct mpdclient *c)
 432 {
 433         if (browser.filelist == NULL)
 434                 return;
 435
 436         if (c->events & MPD_IDLE_DATABASE)
 437                 /* the db has changed -> update the list */
 438                 reload_lists(c);
 439
 440         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_QUEUE))
 441                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 442
 443         if (c->events & (MPD_IDLE_DATABASE
 444 #ifndef NCMPC_MINI
 445                          | MPD_IDLE_QUEUE
 446 #endif
 447                          ))
 448                 artist_repaint();
 449 }
 450
 451 /* _artist is actually only used in the ALBUM case to distinguish albums with
 452    the same name from different artists. */
 453 static void
 454 add_query(struct mpdclient *c, enum mpd_tag_type table, const char *_filter,
 455           const char *_artist)
 456 {
 457         struct mpd_connection *connection = mpdclient_get_connection(c);
 458         char *str;
 459         struct filelist *addlist;
 460
 461         assert(_filter != NULL);
 462
 463         if (connection == NULL)
 464                 return;
 465
 466         str = utf8_to_locale(_filter);
 467         if (table == MPD_TAG_ALBUM)
 468                 screen_status_printf(_("Adding album %s..."), str);
 469         else
 470                 screen_status_printf(_("Adding %s..."), str);
 471         g_free(str);
 472
 473         mpd_search_db_songs(connection, true);
 474         mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 475                                       table, _filter);
 476         if (table == MPD_TAG_ALBUM)
 477                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 478                                               MPD_TAG_ARTIST, _artist);
 479         mpd_search_commit(connection);
 480
 481         addlist = filelist_new_recv(connection);
 482
 483         if (mpd_response_finish(connection))
 484                 mpdclient_filelist_add_all(c, addlist);
 485         else
 486                 mpdclient_handle_error(c);
 487
 488         filelist_free(addlist);
 489 }
 490
 491 static int
 492 screen_artist_lw_cmd(struct mpdclient *c, command_t cmd)
 493 {
 494         switch (mode) {
 495         case LIST_ARTISTS:
 496         case LIST_ALBUMS:
 497                 return list_window_cmd(browser.lw, cmd);
 498
 499         case LIST_SONGS:
 500                 return browser_cmd(&browser, c, cmd);
 501         }
 502
 503         assert(0);
 504         return 0;
 505 }
 506
 507 static int
 508 string_array_find(GPtrArray *array, const char *value)
 509 {
 510         guint i;
 511
 512         for (i = 0; i < array->len; ++i)
 513                 if (strcmp((const char*)g_ptr_array_index(array, i),
 514                            value) == 0)
 515                         return i;
 516
 517         return -1;
 518 }
 519
 520 static bool
 521 screen_artist_cmd(struct mpdclient *c, command_t cmd)
 522 {
 523         struct list_window_range range;
 524         char *selected;
 525         char *old;
 526         char *old_ptr;
 527         int idx;
 528
 529         switch(cmd) {
 530         case CMD_PLAY:
 531                 switch (mode) {
 532                 case LIST_ARTISTS:
 533                         if (browser.lw->selected >= artist_list->len)
 534                                 return true;
 535
 536                         selected = g_ptr_array_index(artist_list,
 537                                                      browser.lw->selected);
 538                         open_album_list(c, g_strdup(selected));
 539                         list_window_reset(browser.lw);
 540
 541                         artist_repaint();
 542                         return true;
 543
 544                 case LIST_ALBUMS:
 545                         if (browser.lw->selected == 0) {
 546                                 /* handle ".." */
 547                                 old = g_strdup(artist);
 548
 549                                 open_artist_list(c);
 550                                 list_window_reset(browser.lw);
 551                                 /* restore previous list window state */
 552                                 idx = string_array_find(artist_list, old);
 553                                 g_free(old);
 554
 555                                 if (idx >= 0) {
 556                                         list_window_set_cursor(browser.lw, idx);
 557                                         list_window_center(browser.lw, idx);
 558                                 }
 559                         } else if (browser.lw->selected == album_list->len + 1) {
 560                                 /* handle "show all" */
 561                                 open_song_list(c, g_strdup(artist), ALL_TRACKS);
 562                                 list_window_reset(browser.lw);
 563                         } else {
 564                                 /* select album */
 565                                 selected = g_ptr_array_index(album_list,
 566                                                              browser.lw->selected - 1);
 567                                 open_song_list(c, g_strdup(artist), g_strdup(selected));
 568                                 list_window_reset(browser.lw);
 569                         }
 570
 571                         artist_repaint();
 572                         return true;
 573
 574                 case LIST_SONGS:
 575                         if (browser.lw->selected == 0) {
 576                                 /* handle ".." */
 577                                 old = g_strdup(album);
 578                                 old_ptr = album;
 579
 580                                 open_album_list(c, g_strdup(artist));
 581                                 list_window_reset(browser.lw);
 582                                 /* restore previous list window state */
 583                                 idx = old_ptr == ALL_TRACKS
 584                                         ? (int)album_list->len
 585                                         : string_array_find(album_list, old);
 586                                 g_free(old);
 587
 588                                 if (idx >= 0) {
 589                                         ++idx;
 590                                         list_window_set_cursor(browser.lw, idx);
 591                                         list_window_center(browser.lw, idx);
 592                                 }
 593
 594                                 artist_repaint();
 595                                 return true;
 596                         }
 597                         break;
 598                 }
 599                 break;
 600
 601                 /* FIXME? CMD_GO_* handling duplicates code from CMD_PLAY */
 602
 603         case CMD_GO_PARENT_DIRECTORY:
 604                 switch (mode) {
 605                 case LIST_ARTISTS:
 606                         break;
 607
 608                 case LIST_ALBUMS:
 609                         old = g_strdup(artist);
 610
 611                         open_artist_list(c);
 612                         list_window_reset(browser.lw);
 613                         /* restore previous list window state */
 614                         idx = string_array_find(artist_list, old);
 615                         g_free(old);
 616
 617                         if (idx >= 0) {
 618                                 list_window_set_cursor(browser.lw, idx);
 619                                 list_window_center(browser.lw, idx);
 620                         }
 621                         break;
 622
 623                 case LIST_SONGS:
 624                         old = g_strdup(album);
 625                         old_ptr = album;
 626
 627                         open_album_list(c, g_strdup(artist));
 628                         list_window_reset(browser.lw);
 629                         /* restore previous list window state */
 630                         idx = old_ptr == ALL_TRACKS
 631                                 ? (int)album_list->len
 632                                 : string_array_find(album_list, old);
 633                         g_free(old);
 634
 635                         if (idx >= 0) {
 636                                 ++idx;
 637                                 list_window_set_cursor(browser.lw, idx);
 638                                 list_window_center(browser.lw, idx);
 639                         }
 640                         break;
 641                 }
 642
 643                 artist_repaint();
 644                 break;
 645
 646         case CMD_GO_ROOT_DIRECTORY:
 647                 switch (mode) {
 648                 case LIST_ARTISTS:
 649                         break;
 650
 651                 case LIST_ALBUMS:
 652                 case LIST_SONGS:
 653                         open_artist_list(c);
 654                         list_window_reset(browser.lw);
 655                         /* restore first list window state (pop while returning true) */
 656                         /* XXX */
 657                         break;
 658                 }
 659
 660                 artist_repaint();
 661                 break;
 662
 663         case CMD_SELECT:
 664         case CMD_ADD:
 665                 switch(mode) {
 666                 case LIST_ARTISTS:
 667                         if (browser.lw->selected >= artist_list->len)
 668                                 return true;
 669
 670                         list_window_get_range(browser.lw, &range);
 671                         for (unsigned i = range.start; i < range.end; ++i) {
 672                                 selected = g_ptr_array_index(artist_list, i);
 673                                 add_query(c, MPD_TAG_ARTIST, selected, NULL);
 674                                 cmd = CMD_LIST_NEXT; /* continue and select next item... */
 675                         }
 676                         break;
 677
 678                 case LIST_ALBUMS:
 679                         list_window_get_range(browser.lw, &range);
 680                         for (unsigned i = range.start; i < range.end; ++i) {
 681                                 if(i == album_list->len + 1)
 682                                         add_query(c, MPD_TAG_ARTIST, artist, NULL);
 683                                 else if (i > 0)
 684                                 {
 685                                         selected = g_ptr_array_index(album_list,
 686                                                                      browser.lw->selected - 1);
 687                                         add_query(c, MPD_TAG_ALBUM, selected, artist);
 688                                         cmd = CMD_LIST_NEXT; /* continue and select next item... */
 689                                 }
 690                         }
 691                         break;
 692
 693                 case LIST_SONGS:
 694                         /* handled by browser_cmd() */
 695                         break;
 696                 }
 697                 break;
 698
 699                 /* continue and update... */
 700         case CMD_SCREEN_UPDATE:
 701                 reload_lists(c);
 702                 return false;
 703
 704         case CMD_LIST_FIND:
 705         case CMD_LIST_RFIND:
 706         case CMD_LIST_FIND_NEXT:
 707         case CMD_LIST_RFIND_NEXT:
 708                 switch (mode) {
 709                 case LIST_ARTISTS:
 710                         screen_find(browser.lw, cmd,
 711                                     screen_artist_lw_callback, artist_list);
 712                         artist_repaint();
 713                         return true;
 714
 715                 case LIST_ALBUMS:
 716                         screen_find(browser.lw, cmd,
 717                                     screen_artist_lw_callback, album_list);
 718                         artist_repaint();
 719                         return true;
 720
 721                 case LIST_SONGS:
 722                         /* handled by browser_cmd() */
 723                         break;
 724                 }
 725         case CMD_LIST_JUMP:
 726                 switch (mode) {
 727                 case LIST_ARTISTS:
 728                         screen_jump(browser.lw, screen_artist_lw_callback,
 729                                     paint_artist_callback, artist_list);
 730                         artist_repaint();
 731                         return true;
 732
 733                 case LIST_ALBUMS:
 734                         screen_jump(browser.lw, screen_artist_lw_callback,
 735                                     paint_album_callback, album_list);
 736                         artist_repaint();
 737                         return true;
 738
 739                 case LIST_SONGS:
 740                         /* handled by browser_cmd() */
 741                         break;
 742                 }
 743
 744                 break;
 745
 746         default:
 747                 break;
 748         }
 749
 750         if (screen_artist_lw_cmd(c, cmd)) {
 751                 if (screen_is_visible(&screen_artist))
 752                         artist_repaint();
 753                 return true;
 754         }
 755
 756         return false;
 757 }
 758
 759 const struct screen_functions screen_artist = {
 760         .init = screen_artist_init,
 761         .exit = screen_artist_quit,
 762         .open = screen_artist_open,
 763         .resize = screen_artist_resize,
 764         .paint = screen_artist_paint,
 765         .update = screen_artist_update,
 766         .cmd = screen_artist_cmd,
 767         .get_title = screen_artist_get_title,
 768 };