src/screen_browser.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_browser.h"
  21 #include "i18n.h"
  22 #include "options.h"
  23 #include "charset.h"
  24 #include "strfsong.h"
  25 #include "screen_utils.h"
  26 #include "mpdclient.h"
  27 #include "filelist.h"
  28
  29 #include <mpd/client.h>
  30
  31 #include <string.h>
  32
  33 #define BUFSIZE 1024
  34
  35 #ifndef NCMPC_MINI
  36 #define HIGHLIGHT  (0x01)
  37 #endif
  38
  39 static const char playlist_format[] = "*%s*";
  40
  41 #ifndef NCMPC_MINI
  42
  43 /* clear the highlight flag for all items in the filelist */
  44 static void
  45 clear_highlights(struct filelist *fl)
  46 {
  47         guint i;
  48
  49         for (i = 0; i < filelist_length(fl); ++i) {
  50                 struct filelist_entry *entry = filelist_get(fl, i);
  51
  52                 entry->flags &= ~HIGHLIGHT;
  53         }
  54 }
  55
  56 /* change the highlight flag for a song */
  57 static void
  58 set_highlight(struct filelist *fl, struct mpd_song *song, int highlight)
  59 {
  60         int i = filelist_find_song(fl, song);
  61         struct filelist_entry *entry;
  62
  63         if (i < 0)
  64                 return;
  65
  66         entry = filelist_get(fl, i);
  67         if (highlight)
  68                 entry->flags |= HIGHLIGHT;
  69         else
  70                 entry->flags &= ~HIGHLIGHT;
  71 }
  72
  73 /* sync highlight flags with playlist */
  74 void
  75 sync_highlights(struct mpdclient *c, struct filelist *fl)
  76 {
  77         guint i;
  78
  79         for (i = 0; i < filelist_length(fl); ++i) {
  80                 struct filelist_entry *entry = filelist_get(fl, i);
  81                 struct mpd_entity *entity = entry->entity;
  82
  83                 if (entity != NULL && mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
  84                         const struct mpd_song *song =
  85                                 mpd_entity_get_song(entity);
  86
  87                         if (playlist_get_index_from_same_song(&c->playlist,
  88                                                               song) >= 0)
  89                                 entry->flags |= HIGHLIGHT;
  90                         else
  91                                 entry->flags &= ~HIGHLIGHT;
  92                 }
  93         }
  94 }
  95
  96 /* the playlist has been updated -> fix highlights */
  97 void
  98 browser_playlist_changed(struct screen_browser *browser, struct mpdclient *c,
  99                          int event, gpointer data)
 100 {
 101         if (browser->filelist == NULL)
 102                 return;
 103
 104         switch(event) {
 105         case PLAYLIST_EVENT_CLEAR:
 106                 clear_highlights(browser->filelist);
 107                 break;
 108         case PLAYLIST_EVENT_ADD:
 109                 set_highlight(browser->filelist, (struct mpd_song *) data, 1);
 110                 break;
 111         case PLAYLIST_EVENT_DELETE:
 112                 set_highlight(browser->filelist, (struct mpd_song *) data, 0);
 113                 break;
 114         case PLAYLIST_EVENT_MOVE:
 115                 break;
 116         default:
 117                 sync_highlights(c, browser->filelist);
 118                 break;
 119         }
 120 }
 121
 122 #endif
 123
 124 /* list_window callback */
 125 const char *
 126 browser_lw_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED char **second_column, void *data)
 127 {
 128         struct filelist *fl = (struct filelist *) data;
 129         static char buf[BUFSIZE];
 130         struct filelist_entry *entry;
 131         struct mpd_entity *entity;
 132
 133         if (fl == NULL || idx >= filelist_length(fl))
 134                 return NULL;
 135
 136         entry = filelist_get(fl, idx);
 137         assert(entry != NULL);
 138
 139         entity = entry->entity;
 140 #ifndef NCMPC_MINI
 141         *highlight = (entry->flags & HIGHLIGHT) != 0;
 142 #else
 143         *highlight = false;
 144 #endif
 145
 146         if( entity == NULL )
 147                 return "[..]";
 148
 149         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 150                 const struct mpd_directory *dir =
 151                         mpd_entity_get_directory(entity);
 152                 char *directory = utf8_to_locale(g_basename(mpd_directory_get_path(dir)));
 153
 154                 g_snprintf(buf, BUFSIZE, "[%s]", directory);
 155                 g_free(directory);
 156                 return buf;
 157         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
 158                 const struct mpd_song *song = mpd_entity_get_song(entity);
 159
 160                 strfsong(buf, BUFSIZE, options.list_format, song);
 161                 return buf;
 162         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 163                 const struct mpd_playlist *playlist =
 164                         mpd_entity_get_playlist(entity);
 165                 char *filename = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 166
 167                 g_snprintf(buf, BUFSIZE, playlist_format, filename);
 168                 g_free(filename);
 169                 return buf;
 170         }
 171
 172         return "Error: Unknown entry!";
 173 }
 174
 175 static bool
 176 load_playlist(struct mpdclient *c, const struct mpd_playlist *playlist)
 177 {
 178         char *filename = utf8_to_locale(mpd_playlist_get_path(playlist));
 179
 180         if (mpdclient_cmd_load_playlist(c, mpd_playlist_get_path(playlist)) == 0)
 181                 screen_status_printf(_("Loading playlist %s..."),
 182                                      g_basename(filename));
 183         g_free(filename);
 184         return true;
 185 }
 186
 187 static bool
 188 enqueue_and_play(struct mpdclient *c, struct filelist_entry *entry)
 189 {
 190         const struct mpd_song *song = mpd_entity_get_song(entry->entity);
 191         int id;
 192
 193 #ifndef NCMPC_MINI
 194         if (!(entry->flags & HIGHLIGHT))
 195                 id = -1;
 196         else
 197 #endif
 198                 id = playlist_get_id_from_same_song(&c->playlist, song);
 199
 200         if (id < 0) {
 201                 char buf[BUFSIZE];
 202
 203                 id = mpd_run_add_id(c->connection, mpd_song_get_uri(song));
 204                 if (id < 0) {
 205                         mpdclient_handle_error(c);
 206                         return false;
 207                 }
 208
 209 #ifndef NCMPC_MINI
 210                 entry->flags |= HIGHLIGHT;
 211 #endif
 212                 strfsong(buf, BUFSIZE, options.list_format, song);
 213                 screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 214 #ifndef NCMPC_MINI
 215         }
 216 #endif
 217
 218         if (!mpd_run_play_id(c->connection, id)) {
 219                 mpdclient_handle_error(c);
 220                 return false;
 221         }
 222
 223         return true;
 224 }
 225
 226 struct filelist_entry *
 227 browser_get_selected_entry(const struct screen_browser *browser)
 228 {
 229         if (browser->filelist == NULL ||
 230             browser->lw->selected_start < browser->lw->selected_end ||
 231             browser->lw->selected >= filelist_length(browser->filelist))
 232                 return NULL;
 233
 234         return filelist_get(browser->filelist, browser->lw->selected);
 235 }
 236
 237 static const struct mpd_entity *
 238 browser_get_selected_entity(const struct screen_browser *browser)
 239 {
 240         const struct filelist_entry *entry = browser_get_selected_entry(browser);
 241
 242         return entry != NULL
 243                 ? entry->entity
 244                 : NULL;
 245 }
 246
 247 static const struct mpd_song *
 248 browser_get_selected_song(const struct screen_browser *browser)
 249 {
 250         const struct mpd_entity *entity = browser_get_selected_entity(browser);
 251
 252         return entity != NULL &&
 253                 mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG
 254                 ? mpd_entity_get_song(entity)
 255                 : NULL;
 256 }
 257
 258 static struct filelist_entry *
 259 browser_get_index(const struct screen_browser *browser, unsigned i)
 260 {
 261         if (browser->filelist == NULL ||
 262             i >= filelist_length(browser->filelist))
 263                 return NULL;
 264
 265         return filelist_get(browser->filelist, i);
 266 }
 267
 268 static bool
 269 browser_handle_enter(struct screen_browser *browser, struct mpdclient *c)
 270 {
 271         struct filelist_entry *entry = browser_get_selected_entry(browser);
 272         struct mpd_entity *entity;
 273
 274         if (entry == NULL)
 275                 return false;
 276
 277         entity = entry->entity;
 278         if (entity == NULL)
 279                 return false;
 280
 281         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST)
 282                 return load_playlist(c, mpd_entity_get_playlist(entity));
 283         else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG)
 284                 return enqueue_and_play(c, entry);
 285         return false;
 286 }
 287
 288 static bool
 289 browser_select_entry(struct mpdclient *c, struct filelist_entry *entry,
 290                      G_GNUC_UNUSED gboolean toggle)
 291 {
 292         assert(entry != NULL);
 293         assert(entry->entity != NULL);
 294
 295         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_PLAYLIST)
 296                 return load_playlist(c, mpd_entity_get_playlist(entry->entity));
 297
 298         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 299                 const struct mpd_directory *dir =
 300                         mpd_entity_get_directory(entry->entity);
 301
 302                 if (mpdclient_cmd_add_path(c, mpd_directory_get_path(dir)) == 0) {
 303                         char *tmp = utf8_to_locale(mpd_directory_get_path(dir));
 304
 305                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 306                         g_free(tmp);
 307                 }
 308
 309                 return true;
 310         }
 311
 312         if (mpd_entity_get_type(entry->entity) != MPD_ENTITY_TYPE_SONG)
 313                 return false;
 314
 315 #ifndef NCMPC_MINI
 316         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 317 #endif
 318         {
 319                 const struct mpd_song *song =
 320                         mpd_entity_get_song(entry->entity);
 321
 322 #ifndef NCMPC_MINI
 323                 entry->flags |= HIGHLIGHT;
 324 #endif
 325
 326                 if (mpdclient_cmd_add(c, song) == 0) {
 327                         char buf[BUFSIZE];
 328
 329                         strfsong(buf, BUFSIZE, options.list_format, song);
 330                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 331                 }
 332 #ifndef NCMPC_MINI
 333         } else {
 334                 /* remove song from playlist */
 335                 const struct mpd_song *song =
 336                         mpd_entity_get_song(entry->entity);
 337                 int idx;
 338
 339                 entry->flags &= ~HIGHLIGHT;
 340
 341                 while ((idx = playlist_get_index_from_same_song(&c->playlist,
 342                                                                 song)) >= 0)
 343                         mpdclient_cmd_delete(c, idx);
 344 #endif
 345         }
 346
 347         return true;
 348 }
 349
 350 static bool
 351 browser_handle_select(struct screen_browser *browser, struct mpdclient *c)
 352 {
 353         struct filelist_entry *entry;
 354
 355         if (browser->lw->range_selection) {
 356                 for (unsigned i = browser->lw->selected_start;
 357                          i <= browser->lw->selected_end; i++) {
 358                         entry = browser_get_index(browser, i);
 359
 360                         if (entry != NULL && entry->entity != NULL)
 361                                 browser_select_entry(c, entry, TRUE);
 362                 }
 363                 return false;
 364         } else {
 365                 entry = browser_get_selected_entry(browser);
 366
 367                 if (entry == NULL || entry->entity == NULL)
 368                         return false;
 369
 370                 return browser_select_entry(c, entry, TRUE);
 371         }
 372 }
 373
 374 static bool
 375 browser_handle_add(struct screen_browser *browser, struct mpdclient *c)
 376 {
 377         struct filelist_entry *entry;
 378
 379         if (browser->lw->range_selection) {
 380                 for (unsigned i = browser->lw->selected_start;
 381                          i <= browser->lw->selected_end; i++) {
 382                         entry = browser_get_index(browser, i);
 383
 384                         if (entry != NULL && entry->entity != NULL)
 385                                 browser_select_entry(c, entry, FALSE);
 386                 }
 387                 return false;
 388         } else {
 389                 entry = browser_get_selected_entry(browser);
 390
 391                 if (entry == NULL || entry->entity == NULL)
 392                         return false;
 393
 394                 return browser_select_entry(c, entry, FALSE);
 395         }
 396 }
 397
 398 static void
 399 browser_handle_select_all(struct screen_browser *browser, struct mpdclient *c)
 400 {
 401         guint i;
 402
 403         if (browser->filelist == NULL)
 404                 return;
 405
 406         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 407                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 408
 409                 if (entry != NULL && entry->entity != NULL)
 410                         browser_select_entry(c, entry, FALSE);
 411         }
 412 }
 413
 414 #ifdef HAVE_GETMOUSE
 415 static int
 416 browser_handle_mouse_event(struct screen_browser *browser, struct mpdclient *c)
 417 {
 418         int row;
 419         unsigned prev_selected = browser->lw->selected;
 420         unsigned long bstate;
 421         int length;
 422
 423         if (browser->filelist)
 424                 length = filelist_length(browser->filelist);
 425         else
 426                 length = 0;
 427
 428         if (screen_get_mouse_event(c, &bstate, &row) ||
 429             list_window_mouse(browser->lw, length, bstate, row))
 430                 return 1;
 431
 432         browser->lw->selected = browser->lw->start + row;
 433         list_window_check_selected(browser->lw, length);
 434
 435         if( bstate & BUTTON1_CLICKED ) {
 436                 if (prev_selected == browser->lw->selected)
 437                         browser_handle_enter(browser, c);
 438         } else if (bstate & BUTTON3_CLICKED) {
 439                 if (prev_selected == browser->lw->selected)
 440                         browser_handle_select(browser, c);
 441         }
 442
 443         return 1;
 444 }
 445 #endif
 446
 447 bool
 448 browser_cmd(struct screen_browser *browser,
 449             struct mpdclient *c, command_t cmd)
 450 {
 451         const struct mpd_song *song;
 452
 453         if (browser->filelist == NULL)
 454                 return false;
 455
 456         switch (cmd) {
 457         case CMD_PLAY:
 458                 browser_handle_enter(browser, c);
 459                 return true;
 460
 461         case CMD_SELECT:
 462                 if (browser_handle_select(browser, c))
 463                         /* continue and select next item... */
 464                         cmd = CMD_LIST_NEXT;
 465
 466                 /* call list_window_cmd to go to the next item */
 467                 break;
 468
 469         case CMD_ADD:
 470                 if (browser_handle_add(browser, c))
 471                         /* continue and select next item... */
 472                         cmd = CMD_LIST_NEXT;
 473
 474                 /* call list_window_cmd to go to the next item */
 475                 break;
 476
 477         case CMD_SELECT_ALL:
 478                 browser_handle_select_all(browser, c);
 479                 return true;
 480
 481         case CMD_LIST_FIND:
 482         case CMD_LIST_RFIND:
 483         case CMD_LIST_FIND_NEXT:
 484         case CMD_LIST_RFIND_NEXT:
 485                 screen_find(browser->lw, filelist_length(browser->filelist),
 486                             cmd, browser_lw_callback,
 487                             browser->filelist);
 488                 return true;
 489         case CMD_LIST_JUMP:
 490                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 491                 return true;
 492
 493 #ifdef HAVE_GETMOUSE
 494         case CMD_MOUSE_EVENT:
 495                 browser_handle_mouse_event(browser, c);
 496                 return true;
 497 #endif
 498
 499 #ifdef ENABLE_SONG_SCREEN
 500         case CMD_SCREEN_SONG:
 501                 song = browser_get_selected_song(browser);
 502                 if (song == NULL)
 503                         return false;
 504
 505                 screen_song_switch(c, song);
 506                 return true;
 507 #endif
 508
 509         case CMD_LOCATE:
 510                 song = browser_get_selected_song(browser);
 511                 if (song == NULL)
 512                         return false;
 513
 514                 screen_file_goto_song(c, song);
 515                 return true;
 516
 517 #ifdef ENABLE_LYRICS_SCREEN
 518         case CMD_SCREEN_LYRICS:
 519                 song = browser_get_selected_song(browser);
 520                 if (song == NULL)
 521                         return false;
 522
 523                 screen_lyrics_switch(c, song, false);
 524                 return true;
 525 #endif
 526         case CMD_SCREEN_SWAP:
 527                 screen_swap(c, browser_get_selected_song(browser));
 528                 return true;
 529
 530         default:
 531                 break;
 532         }
 533
 534         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 535                             cmd))
 536                 return true;
 537
 538         return false;
 539 }