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