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_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
  45 static struct screen_browser browser;
  46
  47 static gint
  48 compare_utf8(gconstpointer s1, gconstpointer s2)
  49 {
  50         const char *const*t1 = s1, *const*t2 = s2;
  51         char *key1, *key2;
  52         int n;
  53
  54         key1 = g_utf8_collate_key(*t1,-1);
  55         key2 = g_utf8_collate_key(*t2,-1);
  56         n = strcmp(key1,key2);
  57         g_free(key1);
  58         g_free(key2);
  59         return n;
  60 }
  61
  62 /* list_window callback */
  63 static const char *
  64 screen_artist_lw_callback(unsigned idx, void *data)
  65 {
  66         GPtrArray *list = data;
  67         static char buf[BUFSIZE];
  68         char *str, *str_utf8;
  69
  70         if (mode == LIST_ALBUMS) {
  71                 if (idx == 0)
  72                         return "[..]";
  73                 else if (idx == list->len + 1) {
  74                         g_snprintf(buf, BUFSIZE, "[%s]", _("All tracks"));
  75                         return buf;
  76                 }
  77
  78                 --idx;
  79         }
  80
  81         assert(idx < list->len);
  82
  83         str_utf8 = g_ptr_array_index(list, idx);
  84         assert(str_utf8 != NULL);
  85
  86         str = utf8_to_locale(str_utf8);
  87         g_snprintf(buf, BUFSIZE, "[%s]", str);
  88         g_free(str);
  89
  90         return buf;
  91 }
  92
  93 static void
  94 screen_artist_paint(void);
  95
  96 static void
  97 artist_repaint(void)
  98 {
  99         screen_artist_paint();
 100         wrefresh(browser.lw->w);
 101 }
 102
 103 static void
 104 string_array_free(GPtrArray *array)
 105 {
 106         unsigned i;
 107
 108         for (i = 0; i < array->len; ++i) {
 109                 char *value = g_ptr_array_index(array, i);
 110                 g_free(value);
 111         }
 112
 113         g_ptr_array_free(array, TRUE);
 114 }
 115
 116 static void
 117 free_lists(void)
 118 {
 119         if (artist_list != NULL) {
 120                 string_array_free(artist_list);
 121                 artist_list = NULL;
 122         }
 123
 124         if (album_list != NULL) {
 125                 string_array_free(album_list);
 126                 album_list = NULL;
 127         }
 128
 129         if (browser.filelist) {
 130                 filelist_free(browser.filelist);
 131                 browser.filelist = NULL;
 132         }
 133 }
 134
 135 static void
 136 recv_tag_values(struct mpd_connection *connection, enum mpd_tag_type tag,
 137                 GPtrArray *list)
 138 {
 139         struct mpd_pair *pair;
 140
 141         while ((pair = mpd_recv_pair_tag(connection, tag)) != NULL) {
 142                 g_ptr_array_add(list, g_strdup(pair->value));
 143                 mpd_return_pair(connection, pair);
 144         }
 145 }
 146
 147 static void
 148 load_artist_list(struct mpdclient *c)
 149 {
 150         struct mpd_connection *connection = mpdclient_get_connection(c);
 151
 152         assert(mode == LIST_ARTISTS);
 153         assert(artist == NULL);
 154         assert(album == NULL);
 155         assert(artist_list == NULL);
 156         assert(album_list == NULL);
 157         assert(browser.filelist == NULL);
 158
 159         artist_list = g_ptr_array_new();
 160
 161         if (connection != NULL) {
 162                 mpd_search_db_tags(connection, MPD_TAG_ARTIST);
 163                 mpd_search_commit(connection);
 164                 recv_tag_values(connection, MPD_TAG_ARTIST, artist_list);
 165
 166                 if (!mpd_response_finish(connection))
 167                         mpdclient_handle_error(c);
 168         }
 169
 170         /* sort list */
 171         g_ptr_array_sort(artist_list, compare_utf8);
 172         list_window_set_length(browser.lw, artist_list->len);
 173 }
 174
 175 static void
 176 load_album_list(struct mpdclient *c)
 177 {
 178         struct mpd_connection *connection = mpdclient_get_connection(c);
 179
 180         assert(mode == LIST_ALBUMS);
 181         assert(artist != NULL);
 182         assert(album == NULL);
 183         assert(album_list == NULL);
 184         assert(browser.filelist == NULL);
 185
 186         album_list = g_ptr_array_new();
 187
 188         if (connection != NULL) {
 189                 mpd_search_db_tags(connection, MPD_TAG_ALBUM);
 190                 mpd_search_add_tag_constraint(connection,
 191                                               MPD_OPERATOR_DEFAULT,
 192                                               MPD_TAG_ARTIST, artist);
 193                 mpd_search_commit(connection);
 194
 195                 recv_tag_values(connection, MPD_TAG_ALBUM, album_list);
 196
 197                 if (!mpd_response_finish(connection))
 198                         mpdclient_handle_error(c);
 199         }
 200
 201         /* sort list */
 202         g_ptr_array_sort(album_list, compare_utf8);
 203
 204         list_window_set_length(browser.lw, album_list->len + 2);
 205 }
 206
 207 static void
 208 load_song_list(struct mpdclient *c)
 209 {
 210         struct mpd_connection *connection = mpdclient_get_connection(c);
 211
 212         assert(mode == LIST_SONGS);
 213         assert(artist != NULL);
 214         assert(album != NULL);
 215         assert(browser.filelist == NULL);
 216
 217         browser.filelist = filelist_new();
 218         /* add a dummy entry for ".." */
 219         filelist_append(browser.filelist, NULL);
 220
 221         if (connection != NULL) {
 222                 mpd_search_db_songs(connection, true);
 223                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 224                                               MPD_TAG_ARTIST, artist);
 225                 if (album[0] != 0)
 226                         mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 227                                                       MPD_TAG_ALBUM, album);
 228                 mpd_search_commit(connection);
 229
 230                 filelist_recv(browser.filelist, connection);
 231
 232                 if (!mpd_response_finish(connection))
 233                         mpdclient_handle_error(c);
 234         }
 235
 236         /* fix highlights */
 237         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 238         list_window_set_length(browser.lw, filelist_length(browser.filelist));
 239 }
 240
 241 static void
 242 free_state(void)
 243 {
 244         g_free(artist);
 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                 if (*album != 0) {
 413                         s2 = utf8_to_locale(album);
 414                         g_snprintf(str, size,
 415                                    _("Album: %s - %s"), s1, s2);
 416                         g_free(s2);
 417                 } else
 418                         g_snprintf(str, size,
 419                                    _("All tracks of artist: %s"), s1);
 420                 g_free(s1);
 421                 break;
 422         }
 423
 424         return str;
 425 }
 426
 427 static void
 428 screen_artist_update(struct mpdclient *c)
 429 {
 430         if (browser.filelist == NULL)
 431                 return;
 432
 433         if (c->events & MPD_IDLE_DATABASE)
 434                 /* the db has changed -> update the list */
 435                 reload_lists(c);
 436
 437         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_QUEUE))
 438                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 439
 440         if (c->events & (MPD_IDLE_DATABASE
 441 #ifndef NCMPC_MINI
 442                          | MPD_IDLE_QUEUE
 443 #endif
 444                          ))
 445                 artist_repaint();
 446 }
 447
 448 static void
 449 add_query(struct mpdclient *c, enum mpd_tag_type table, char *_filter)
 450 {
 451         struct mpd_connection *connection = mpdclient_get_connection(c);
 452         char *str;
 453         struct filelist *addlist;
 454
 455         assert(filter != NULL);
 456
 457         if (connection == NULL)
 458                 return;
 459
 460         str = utf8_to_locale(_filter);
 461         if (table == MPD_TAG_ALBUM)
 462                 screen_status_printf("Adding album %s...", str);
 463         else
 464                 screen_status_printf("Adding %s...", str);
 465         g_free(str);
 466
 467         mpd_search_db_songs(connection, true);
 468         mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 469                                       table, _filter);
 470         mpd_search_commit(connection);
 471
 472         addlist = filelist_new_recv(connection);
 473
 474         if (mpd_response_finish(connection))
 475                 mpdclient_filelist_add_all(c, addlist);
 476         else
 477                 mpdclient_handle_error(c);
 478
 479         filelist_free(addlist);
 480 }
 481
 482 static int
 483 screen_artist_lw_cmd(struct mpdclient *c, command_t cmd)
 484 {
 485         switch (mode) {
 486         case LIST_ARTISTS:
 487         case LIST_ALBUMS:
 488                 return list_window_cmd(browser.lw, cmd);
 489
 490         case LIST_SONGS:
 491                 return browser_cmd(&browser, c, cmd);
 492         }
 493
 494         assert(0);
 495         return 0;
 496 }
 497
 498 static int
 499 string_array_find(GPtrArray *array, const char *value)
 500 {
 501         guint i;
 502
 503         for (i = 0; i < array->len; ++i)
 504                 if (strcmp((const char*)g_ptr_array_index(array, i),
 505                            value) == 0)
 506                         return i;
 507
 508         return -1;
 509 }
 510
 511 static bool
 512 screen_artist_cmd(struct mpdclient *c, command_t cmd)
 513 {
 514         struct list_window_range range;
 515         char *selected;
 516         char *old;
 517         int idx;
 518
 519         switch(cmd) {
 520         case CMD_PLAY:
 521                 switch (mode) {
 522                 case LIST_ARTISTS:
 523                         if (browser.lw->selected >= artist_list->len)
 524                                 return true;
 525
 526                         selected = g_ptr_array_index(artist_list,
 527                                                      browser.lw->selected);
 528                         open_album_list(c, g_strdup(selected));
 529                         list_window_reset(browser.lw);
 530
 531                         artist_repaint();
 532                         return true;
 533
 534                 case LIST_ALBUMS:
 535                         if (browser.lw->selected == 0) {
 536                                 /* handle ".." */
 537                                 old = g_strdup(artist);
 538
 539                                 open_artist_list(c);
 540                                 list_window_reset(browser.lw);
 541                                 /* restore previous list window state */
 542                                 idx = string_array_find(artist_list, old);
 543                                 g_free(old);
 544
 545                                 if (idx >= 0) {
 546                                         list_window_set_cursor(browser.lw, idx);
 547                                         list_window_center(browser.lw, idx);
 548                                 }
 549                         } else if (browser.lw->selected == album_list->len + 1) {
 550                                 /* handle "show all" */
 551                                 open_song_list(c, g_strdup(artist), g_strdup("\0"));
 552                                 list_window_reset(browser.lw);
 553                         } else {
 554                                 /* select album */
 555                                 selected = g_ptr_array_index(album_list,
 556                                                              browser.lw->selected - 1);
 557                                 open_song_list(c, g_strdup(artist), g_strdup(selected));
 558                                 list_window_reset(browser.lw);
 559                         }
 560
 561                         artist_repaint();
 562                         return true;
 563
 564                 case LIST_SONGS:
 565                         if (browser.lw->selected == 0) {
 566                                 /* handle ".." */
 567                                 old = g_strdup(album);
 568
 569                                 open_album_list(c, g_strdup(artist));
 570                                 list_window_reset(browser.lw);
 571                                 /* restore previous list window state */
 572                                 idx = *old == 0
 573                                         ? (int)album_list->len
 574                                         : string_array_find(album_list, old);
 575                                 g_free(old);
 576
 577                                 if (idx >= 0) {
 578                                         ++idx;
 579                                         list_window_set_cursor(browser.lw, idx);
 580                                         list_window_center(browser.lw, idx);
 581                                 }
 582
 583                                 artist_repaint();
 584                                 return true;
 585                         }
 586                         break;
 587                 }
 588                 break;
 589
 590                 /* FIXME? CMD_GO_* handling duplicates code from CMD_PLAY */
 591
 592         case CMD_GO_PARENT_DIRECTORY:
 593                 switch (mode) {
 594                 case LIST_ARTISTS:
 595                         break;
 596
 597                 case LIST_ALBUMS:
 598                         old = g_strdup(artist);
 599
 600                         open_artist_list(c);
 601                         list_window_reset(browser.lw);
 602                         /* restore previous list window state */
 603                         idx = string_array_find(artist_list, old);
 604                         g_free(old);
 605
 606                         if (idx >= 0) {
 607                                 list_window_set_cursor(browser.lw, idx);
 608                                 list_window_center(browser.lw, idx);
 609                         }
 610                         break;
 611
 612                 case LIST_SONGS:
 613                         old = g_strdup(album);
 614
 615                         open_album_list(c, g_strdup(artist));
 616                         list_window_reset(browser.lw);
 617                         /* restore previous list window state */
 618                         idx = *old == 0
 619                                 ? (int)album_list->len
 620                                 : string_array_find(album_list, old);
 621                         g_free(old);
 622
 623                         if (idx >= 0) {
 624                                 ++idx;
 625                                 list_window_set_cursor(browser.lw, idx);
 626                                 list_window_center(browser.lw, idx);
 627                         }
 628                         break;
 629                 }
 630
 631                 artist_repaint();
 632                 break;
 633
 634         case CMD_GO_ROOT_DIRECTORY:
 635                 switch (mode) {
 636                 case LIST_ARTISTS:
 637                         break;
 638
 639                 case LIST_ALBUMS:
 640                 case LIST_SONGS:
 641                         open_artist_list(c);
 642                         list_window_reset(browser.lw);
 643                         /* restore first list window state (pop while returning true) */
 644                         /* XXX */
 645                         break;
 646                 }
 647
 648                 artist_repaint();
 649                 break;
 650
 651         case CMD_SELECT:
 652         case CMD_ADD:
 653                 switch(mode) {
 654                 case LIST_ARTISTS:
 655                         if (browser.lw->selected >= artist_list->len)
 656                                 return true;
 657
 658                         list_window_get_range(browser.lw, &range);
 659                         for (unsigned i = range.start; i < range.end; ++i) {
 660                                 selected = g_ptr_array_index(artist_list, i);
 661                                 add_query(c, MPD_TAG_ARTIST, selected);
 662                                 cmd = CMD_LIST_NEXT; /* continue and select next item... */
 663                         }
 664                         break;
 665
 666                 case LIST_ALBUMS:
 667                         list_window_get_range(browser.lw, &range);
 668                         for (unsigned i = range.start; i < range.end; ++i) {
 669                                 if(i == album_list->len + 1)
 670                                         add_query(c, MPD_TAG_ARTIST, artist);
 671                                 else if (i > 0)
 672                                 {
 673                                         selected = g_ptr_array_index(album_list,
 674                                                                      browser.lw->selected - 1);
 675                                         add_query(c, MPD_TAG_ALBUM, selected);
 676                                         cmd = CMD_LIST_NEXT; /* continue and select next item... */
 677                                 }
 678                         }
 679                         break;
 680
 681                 case LIST_SONGS:
 682                         /* handled by browser_cmd() */
 683                         break;
 684                 }
 685                 break;
 686
 687                 /* continue and update... */
 688         case CMD_SCREEN_UPDATE:
 689                 reload_lists(c);
 690                 return false;
 691
 692         case CMD_LIST_FIND:
 693         case CMD_LIST_RFIND:
 694         case CMD_LIST_FIND_NEXT:
 695         case CMD_LIST_RFIND_NEXT:
 696                 switch (mode) {
 697                 case LIST_ARTISTS:
 698                         screen_find(browser.lw, cmd,
 699                                     screen_artist_lw_callback, artist_list);
 700                         artist_repaint();
 701                         return true;
 702
 703                 case LIST_ALBUMS:
 704                         screen_find(browser.lw, cmd,
 705                                     screen_artist_lw_callback, album_list);
 706                         artist_repaint();
 707                         return true;
 708
 709                 case LIST_SONGS:
 710                         /* handled by browser_cmd() */
 711                         break;
 712                 }
 713         case CMD_LIST_JUMP:
 714                 switch (mode) {
 715                 case LIST_ARTISTS:
 716                         screen_jump(browser.lw, screen_artist_lw_callback,
 717                                     paint_artist_callback, artist_list);
 718                         artist_repaint();
 719                         return true;
 720
 721                 case LIST_ALBUMS:
 722                         screen_jump(browser.lw, screen_artist_lw_callback,
 723                                     paint_album_callback, album_list);
 724                         artist_repaint();
 725                         return true;
 726
 727                 case LIST_SONGS:
 728                         /* handled by browser_cmd() */
 729                         break;
 730                 }
 731
 732                 break;
 733
 734         default:
 735                 break;
 736         }
 737
 738         if (screen_artist_lw_cmd(c, cmd)) {
 739                 if (screen_is_visible(&screen_artist))
 740                         artist_repaint();
 741                 return true;
 742         }
 743
 744         return false;
 745 }
 746
 747 const struct screen_functions screen_artist = {
 748         .init = screen_artist_init,
 749         .exit = screen_artist_quit,
 750         .open = screen_artist_open,
 751         .resize = screen_artist_resize,
 752         .paint = screen_artist_paint,
 753         .update = screen_artist_update,
 754         .cmd = screen_artist_cmd,
 755         .get_title = screen_artist_get_title,
 756 };