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         }
 215
 216         if (!mpd_run_play_id(c->connection, id)) {
 217                 mpdclient_handle_error(c);
 218                 return false;
 219         }
 220
 221         return true;
 222 }
 223
 224 struct filelist_entry *
 225 browser_get_selected_entry(const struct screen_browser *browser)
 226 {
 227         if (browser->filelist == NULL ||
 228             browser->lw->selected_start < browser->lw->selected_end ||
 229             browser->lw->selected >= filelist_length(browser->filelist))
 230                 return NULL;
 231
 232         return filelist_get(browser->filelist, browser->lw->selected);
 233 }
 234
 235 static const struct mpd_entity *
 236 browser_get_selected_entity(const struct screen_browser *browser)
 237 {
 238         const struct filelist_entry *entry = browser_get_selected_entry(browser);
 239
 240         return entry != NULL
 241                 ? entry->entity
 242                 : NULL;
 243 }
 244
 245 static const struct mpd_song *
 246 browser_get_selected_song(const struct screen_browser *browser)
 247 {
 248         const struct mpd_entity *entity = browser_get_selected_entity(browser);
 249
 250         return entity != NULL &&
 251                 mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG
 252                 ? mpd_entity_get_song(entity)
 253                 : NULL;
 254 }
 255
 256 static struct filelist_entry *
 257 browser_get_index(const struct screen_browser *browser, unsigned i)
 258 {
 259         if (browser->filelist == NULL ||
 260             i >= filelist_length(browser->filelist))
 261                 return NULL;
 262
 263         return filelist_get(browser->filelist, i);
 264 }
 265
 266 static bool
 267 browser_handle_enter(struct screen_browser *browser, struct mpdclient *c)
 268 {
 269         struct filelist_entry *entry = browser_get_selected_entry(browser);
 270         struct mpd_entity *entity;
 271
 272         if (entry == NULL)
 273                 return false;
 274
 275         entity = entry->entity;
 276         if (entity == NULL)
 277                 return false;
 278
 279         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST)
 280                 return load_playlist(c, mpd_entity_get_playlist(entity));
 281         else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG)
 282                 return enqueue_and_play(c, entry);
 283         return false;
 284 }
 285
 286 static bool
 287 browser_select_entry(struct mpdclient *c, struct filelist_entry *entry,
 288                      G_GNUC_UNUSED gboolean toggle)
 289 {
 290         assert(entry != NULL);
 291         assert(entry->entity != NULL);
 292
 293         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_PLAYLIST)
 294                 return load_playlist(c, mpd_entity_get_playlist(entry->entity));
 295
 296         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 297                 const struct mpd_directory *dir =
 298                         mpd_entity_get_directory(entry->entity);
 299
 300                 if (mpdclient_cmd_add_path(c, mpd_directory_get_path(dir)) == 0) {
 301                         char *tmp = utf8_to_locale(mpd_directory_get_path(dir));
 302
 303                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 304                         g_free(tmp);
 305                 }
 306
 307                 return true;
 308         }
 309
 310         if (mpd_entity_get_type(entry->entity) != MPD_ENTITY_TYPE_SONG)
 311                 return false;
 312
 313 #ifndef NCMPC_MINI
 314         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 315 #endif
 316         {
 317                 const struct mpd_song *song =
 318                         mpd_entity_get_song(entry->entity);
 319
 320 #ifndef NCMPC_MINI
 321                 entry->flags |= HIGHLIGHT;
 322 #endif
 323
 324                 if (mpdclient_cmd_add(c, song) == 0) {
 325                         char buf[BUFSIZE];
 326
 327                         strfsong(buf, BUFSIZE, options.list_format, song);
 328                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 329                 }
 330 #ifndef NCMPC_MINI
 331         } else {
 332                 /* remove song from playlist */
 333                 const struct mpd_song *song =
 334                         mpd_entity_get_song(entry->entity);
 335                 int idx;
 336
 337                 entry->flags &= ~HIGHLIGHT;
 338
 339                 while ((idx = playlist_get_index_from_same_song(&c->playlist,
 340                                                                 song)) >= 0)
 341                         mpdclient_cmd_delete(c, idx);
 342 #endif
 343         }
 344
 345         return true;
 346 }
 347
 348 static bool
 349 browser_handle_select(struct screen_browser *browser, struct mpdclient *c)
 350 {
 351         struct filelist_entry *entry;
 352
 353         if (browser->lw->range_selection) {
 354                 for (unsigned i = browser->lw->selected_start;
 355                          i <= browser->lw->selected_end; i++) {
 356                         entry = browser_get_index(browser, i);
 357
 358                         if (entry != NULL && entry->entity != NULL)
 359                                 browser_select_entry(c, entry, TRUE);
 360                 }
 361                 return false;
 362         } else {
 363                 entry = browser_get_selected_entry(browser);
 364
 365                 if (entry == NULL || entry->entity == NULL)
 366                         return false;
 367
 368                 return browser_select_entry(c, entry, TRUE);
 369         }
 370 }
 371
 372 static bool
 373 browser_handle_add(struct screen_browser *browser, struct mpdclient *c)
 374 {
 375         struct filelist_entry *entry;
 376
 377         if (browser->lw->range_selection) {
 378                 for (unsigned i = browser->lw->selected_start;
 379                          i <= browser->lw->selected_end; i++) {
 380                         entry = browser_get_index(browser, i);
 381
 382                         if (entry != NULL && entry->entity != NULL)
 383                                 browser_select_entry(c, entry, FALSE);
 384                 }
 385                 return false;
 386         } else {
 387                 entry = browser_get_selected_entry(browser);
 388
 389                 if (entry == NULL || entry->entity == NULL)
 390                         return false;
 391
 392                 return browser_select_entry(c, entry, FALSE);
 393         }
 394 }
 395
 396 static void
 397 browser_handle_select_all(struct screen_browser *browser, struct mpdclient *c)
 398 {
 399         guint i;
 400
 401         if (browser->filelist == NULL)
 402                 return;
 403
 404         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 405                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 406
 407                 if (entry != NULL && entry->entity != NULL)
 408                         browser_select_entry(c, entry, FALSE);
 409         }
 410 }
 411
 412 #ifdef HAVE_GETMOUSE
 413 static int
 414 browser_handle_mouse_event(struct screen_browser *browser, struct mpdclient *c)
 415 {
 416         int row;
 417         unsigned prev_selected = browser->lw->selected;
 418         unsigned long bstate;
 419         int length;
 420
 421         if (browser->filelist)
 422                 length = filelist_length(browser->filelist);
 423         else
 424                 length = 0;
 425
 426         if (screen_get_mouse_event(c, &bstate, &row) ||
 427             list_window_mouse(browser->lw, length, bstate, row))
 428                 return 1;
 429
 430         browser->lw->selected = browser->lw->start + row;
 431         list_window_check_selected(browser->lw, length);
 432
 433         if( bstate & BUTTON1_CLICKED ) {
 434                 if (prev_selected == browser->lw->selected)
 435                         browser_handle_enter(browser, c);
 436         } else if (bstate & BUTTON3_CLICKED) {
 437                 if (prev_selected == browser->lw->selected)
 438                         browser_handle_select(browser, c);
 439         }
 440
 441         return 1;
 442 }
 443 #endif
 444
 445 bool
 446 browser_cmd(struct screen_browser *browser,
 447             struct mpdclient *c, command_t cmd)
 448 {
 449         const struct mpd_song *song;
 450
 451         if (browser->filelist == NULL)
 452                 return false;
 453
 454         switch (cmd) {
 455         case CMD_PLAY:
 456                 browser_handle_enter(browser, c);
 457                 return true;
 458
 459         case CMD_SELECT:
 460                 if (browser_handle_select(browser, c))
 461                         /* continue and select next item... */
 462                         cmd = CMD_LIST_NEXT;
 463
 464                 /* call list_window_cmd to go to the next item */
 465                 break;
 466
 467         case CMD_ADD:
 468                 if (browser_handle_add(browser, c))
 469                         /* continue and select next item... */
 470                         cmd = CMD_LIST_NEXT;
 471
 472                 /* call list_window_cmd to go to the next item */
 473                 break;
 474
 475         case CMD_SELECT_ALL:
 476                 browser_handle_select_all(browser, c);
 477                 return true;
 478
 479         case CMD_LIST_FIND:
 480         case CMD_LIST_RFIND:
 481         case CMD_LIST_FIND_NEXT:
 482         case CMD_LIST_RFIND_NEXT:
 483                 screen_find(browser->lw, filelist_length(browser->filelist),
 484                             cmd, browser_lw_callback,
 485                             browser->filelist);
 486                 return true;
 487         case CMD_LIST_JUMP:
 488                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 489                 return true;
 490
 491 #ifdef HAVE_GETMOUSE
 492         case CMD_MOUSE_EVENT:
 493                 browser_handle_mouse_event(browser, c);
 494                 return true;
 495 #endif
 496
 497 #ifdef ENABLE_SONG_SCREEN
 498         case CMD_SCREEN_SONG:
 499                 song = browser_get_selected_song(browser);
 500                 if (song == NULL)
 501                         return false;
 502
 503                 screen_song_switch(c, song);
 504                 return true;
 505 #endif
 506
 507         case CMD_LOCATE:
 508                 song = browser_get_selected_song(browser);
 509                 if (song == NULL)
 510                         return false;
 511
 512                 screen_file_goto_song(c, song);
 513                 return true;
 514
 515 #ifdef ENABLE_LYRICS_SCREEN
 516         case CMD_SCREEN_LYRICS:
 517                 song = browser_get_selected_song(browser);
 518                 if (song == NULL)
 519                         return false;
 520
 521                 screen_lyrics_switch(c, song, false);
 522                 return true;
 523 #endif
 524         case CMD_SCREEN_SWAP:
 525                 screen_swap(c, browser_get_selected_song(browser));
 526                 return true;
 527
 528         default:
 529                 break;
 530         }
 531
 532         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 533                             cmd))
 534                 return true;
 535
 536         return false;
 537 }