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 (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                 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 /* chdir */
 168 bool
 169 browser_change_directory(struct screen_browser *browser, mpdclient_t *c,
 170                          filelist_entry_t *entry, const char *new_path)
 171 {
 172         mpd_InfoEntity *entity = NULL;
 173         gchar *path = NULL;
 174         char *old_path;
 175         int idx;
 176
 177         if( entry!=NULL )
 178                 entity = entry->entity;
 179         else if( new_path==NULL )
 180                 return false;
 181
 182         if( entity==NULL ) {
 183                 if( entry || 0==strcmp(new_path, "..") ) {
 184                         /* return to parent */
 185                         char *parent = g_path_get_dirname(browser->filelist->path);
 186                         if( strcmp(parent, ".") == 0 )
 187                                 parent[0] = '\0';
 188                         path = g_strdup(parent);
 189                         g_free(parent);
 190                 } else {
 191                         /* entry==NULL, then new_path ("" is root) */
 192                         path = g_strdup(new_path);
 193                 }
 194         } else if( entity->type==MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 195                 /* enter sub */
 196                 mpd_Directory *dir = entity->info.directory;
 197                 path = g_strdup(dir->path);
 198         } else
 199                 return false;
 200
 201         if (browser->filelist != NULL) {
 202                 old_path = g_strdup(browser->filelist->path);
 203                 filelist_free(browser->filelist);
 204         } else
 205                 old_path = NULL;
 206
 207         browser->filelist = mpdclient_filelist_get(c, path);
 208 #ifndef NCMPC_MINI
 209         sync_highlights(c, browser->filelist);
 210 #endif
 211
 212         idx = old_path != NULL
 213                 ? filelist_find_directory(browser->filelist, old_path)
 214                 : -1;
 215         g_free(old_path);
 216
 217         list_window_reset(browser->lw);
 218         if (idx >= 0) {
 219                 list_window_set_selected(browser->lw, idx);
 220                 list_window_center(browser->lw,
 221                                    filelist_length(browser->filelist), idx);
 222         }
 223
 224         g_free(path);
 225         return true;
 226 }
 227
 228 static bool
 229 load_playlist(mpdclient_t *c, const mpd_PlaylistFile *plf)
 230 {
 231         char *filename = utf8_to_locale(plf->path);
 232
 233         if (mpdclient_cmd_load_playlist(c, plf->path) == 0)
 234                 screen_status_printf(_("Loading playlist %s..."),
 235                                      g_basename(filename));
 236         g_free(filename);
 237         return true;
 238 }
 239
 240 static bool
 241 enqueue_and_play(mpdclient_t *c, filelist_entry_t *entry)
 242 {
 243         int idx;
 244         mpd_InfoEntity *entity = entry->entity;
 245         mpd_Song *song = entity->info.song;
 246
 247 #ifndef NCMPC_MINI
 248         if (!(entry->flags & HIGHLIGHT)) {
 249 #endif
 250                 if (mpdclient_cmd_add(c, song) == 0) {
 251                         char buf[BUFSIZE];
 252
 253 #ifndef NCMPC_MINI
 254                         entry->flags |= HIGHLIGHT;
 255 #endif
 256                         strfsong(buf, BUFSIZE, options.list_format, song);
 257                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 258                         mpdclient_update(c); /* get song id */
 259                 } else
 260                         return false;
 261 #ifndef NCMPC_MINI
 262         }
 263 #endif
 264
 265         idx = playlist_get_index_from_same_song(c, song);
 266         mpdclient_cmd_play(c, idx);
 267         return true;
 268 }
 269
 270 static struct filelist_entry *
 271 browser_get_selected(const struct screen_browser *browser)
 272 {
 273         if (browser->filelist == NULL ||
 274             browser->lw->selected_start < browser->lw->selected_end ||
 275             browser->lw->selected >= filelist_length(browser->filelist))
 276                 return NULL;
 277
 278         return filelist_get(browser->filelist, browser->lw->selected);
 279 }
 280
 281 static struct filelist_entry *
 282 browser_get_index(const struct screen_browser *browser, unsigned i)
 283 {
 284         if (browser->filelist == NULL ||
 285             i >= filelist_length(browser->filelist))
 286                 return NULL;
 287
 288         return filelist_get(browser->filelist, i);
 289 }
 290
 291 static bool
 292 browser_handle_enter(struct screen_browser *browser, mpdclient_t *c)
 293 {
 294         struct filelist_entry *entry = browser_get_selected(browser);
 295         mpd_InfoEntity *entity;
 296
 297         if (entry == NULL)
 298                 return false;
 299
 300         entity = entry->entity;
 301         if (entity == NULL || entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY)
 302                 return browser_change_directory(browser, c, entry, NULL);
 303         else if (entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 304                 return load_playlist(c, entity->info.playlistFile);
 305         else if (entity->type == MPD_INFO_ENTITY_TYPE_SONG)
 306                 return enqueue_and_play(c, entry);
 307         return false;
 308 }
 309
 310 static bool
 311 browser_select_entry(mpdclient_t *c, filelist_entry_t *entry,
 312                      G_GNUC_UNUSED gboolean toggle)
 313 {
 314         assert(entry != NULL);
 315         assert(entry->entity != NULL);
 316
 317         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 318                 return load_playlist(c, entry->entity->info.playlistFile);
 319
 320         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 321                 mpd_Directory *dir = entry->entity->info.directory;
 322
 323                 if (mpdclient_cmd_add_path(c, dir->path) == 0) {
 324                         char *tmp = utf8_to_locale(dir->path);
 325
 326                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 327                         g_free(tmp);
 328                 }
 329
 330                 return true;
 331         }
 332
 333         if (entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 334                 return false;
 335
 336         assert(entry->entity->info.song != NULL);
 337
 338 #ifndef NCMPC_MINI
 339         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 340 #endif
 341         {
 342                 mpd_Song *song = entry->entity->info.song;
 343
 344 #ifndef NCMPC_MINI
 345                 entry->flags |= HIGHLIGHT;
 346 #endif
 347
 348                 if (mpdclient_cmd_add(c, song) == 0) {
 349                         char buf[BUFSIZE];
 350
 351                         strfsong(buf, BUFSIZE, options.list_format, song);
 352                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 353                 }
 354 #ifndef NCMPC_MINI
 355         } else {
 356                 /* remove song from playlist */
 357                 mpd_Song *song = entry->entity->info.song;
 358                 int idx;
 359
 360                 entry->flags &= ~HIGHLIGHT;
 361
 362                 while ((idx = playlist_get_index_from_same_song(c, song)) >= 0)
 363                         mpdclient_cmd_delete(c, idx);
 364 #endif
 365         }
 366
 367         return true;
 368 }
 369
 370 static bool
 371 browser_handle_select(struct screen_browser *browser, mpdclient_t *c)
 372 {
 373         struct filelist_entry *entry;
 374
 375         if (browser->lw->range_selection) {
 376                 for (unsigned i = browser->lw->selected_start;
 377                          i <= browser->lw->selected_end; i++) {
 378                         entry = browser_get_index(browser, i);
 379
 380                         if (entry != NULL && entry->entity != NULL)
 381                                 browser_select_entry(c, entry, TRUE);
 382                 }
 383                 return false;
 384         } else {
 385                 entry = browser_get_selected(browser);
 386
 387                 if (entry == NULL || entry->entity == NULL)
 388                         return false;
 389
 390                 return browser_select_entry(c, entry, TRUE);
 391         }
 392 }
 393
 394 static bool
 395 browser_handle_add(struct screen_browser *browser, mpdclient_t *c)
 396 {
 397         struct filelist_entry *entry;
 398
 399         if (browser->lw->range_selection) {
 400                 for (unsigned i = browser->lw->selected_start;
 401                          i <= browser->lw->selected_end; i++) {
 402                         entry = browser_get_index(browser, i);
 403
 404                         if (entry != NULL && entry->entity != NULL)
 405                                 browser_select_entry(c, entry, FALSE);
 406                 }
 407                 return false;
 408         } else {
 409                 entry = browser_get_selected(browser);
 410
 411                 if (entry == NULL || entry->entity == NULL)
 412                         return false;
 413
 414                 return browser_select_entry(c, entry, FALSE);
 415         }
 416 }
 417
 418 static void
 419 browser_handle_select_all(struct screen_browser *browser, mpdclient_t *c)
 420 {
 421         guint i;
 422
 423         if (browser->filelist == NULL)
 424                 return;
 425
 426         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 427                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 428
 429                 if (entry != NULL && entry->entity != NULL)
 430                         browser_select_entry(c, entry, FALSE);
 431         }
 432 }
 433
 434 #ifdef HAVE_GETMOUSE
 435 static int
 436 browser_handle_mouse_event(struct screen_browser *browser, mpdclient_t *c)
 437 {
 438         int row;
 439         unsigned prev_selected = browser->lw->selected;
 440         unsigned long bstate;
 441         int length;
 442
 443         if (browser->filelist)
 444                 length = filelist_length(browser->filelist);
 445         else
 446                 length = 0;
 447
 448         if (screen_get_mouse_event(c, &bstate, &row) ||
 449             list_window_mouse(browser->lw, length, bstate, row))
 450                 return 1;
 451
 452         browser->lw->selected = browser->lw->start + row;
 453         list_window_check_selected(browser->lw, length);
 454
 455         if( bstate & BUTTON1_CLICKED ) {
 456                 if (prev_selected == browser->lw->selected)
 457                         browser_handle_enter(browser, c);
 458         } else if (bstate & BUTTON3_CLICKED) {
 459                 if (prev_selected == browser->lw->selected)
 460                         browser_handle_select(browser, c);
 461         }
 462
 463         return 1;
 464 }
 465 #endif
 466
 467 bool
 468 browser_cmd(struct screen_browser *browser,
 469             struct mpdclient *c, command_t cmd)
 470 {
 471         struct filelist_entry *entry;
 472
 473         switch (cmd) {
 474         case CMD_PLAY:
 475                 browser_handle_enter(browser, c);
 476                 return true;
 477
 478         case CMD_SELECT:
 479                 if (browser_handle_select(browser, c))
 480                         /* continue and select next item... */
 481                         cmd = CMD_LIST_NEXT;
 482
 483                 /* call list_window_cmd to go to the next item */
 484                 break;
 485
 486         case CMD_ADD:
 487                 if (browser_handle_add(browser, c))
 488                         /* continue and select next item... */
 489                         cmd = CMD_LIST_NEXT;
 490
 491                 /* call list_window_cmd to go to the next item */
 492                 break;
 493
 494         case CMD_SELECT_ALL:
 495                 browser_handle_select_all(browser, c);
 496                 return true;
 497
 498         case CMD_LIST_FIND:
 499         case CMD_LIST_RFIND:
 500         case CMD_LIST_FIND_NEXT:
 501         case CMD_LIST_RFIND_NEXT:
 502                 screen_find(browser->lw, filelist_length(browser->filelist),
 503                             cmd, browser_lw_callback,
 504                             browser->filelist);
 505                 return true;
 506         case CMD_LIST_JUMP:
 507                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 508                 return true;
 509
 510 #ifdef HAVE_GETMOUSE
 511         case CMD_MOUSE_EVENT:
 512                 browser_handle_mouse_event(browser, c);
 513                 return true;
 514 #endif
 515
 516 #ifdef ENABLE_SONG_SCREEN
 517         case CMD_SCREEN_SONG:
 518                 entry = browser_get_selected(browser);
 519                 if (entry == NULL || entry->entity == NULL ||
 520                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 521                         return false;
 522
 523                 screen_song_switch(c, entry->entity->info.song);
 524                 return true;
 525 #endif
 526
 527         case CMD_LOCATE:
 528                 entry = browser_get_selected(browser);
 529                 if (entry == NULL || entry->entity == NULL ||
 530                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 531                         return false;
 532
 533                 screen_file_goto_song(c, entry->entity->info.song);
 534                 return true;
 535
 536 #ifdef ENABLE_LYRICS_SCREEN
 537         case CMD_SCREEN_LYRICS:
 538                 entry = browser_get_selected(browser);
 539                 if (entry == NULL)
 540                         return false;
 541
 542                 if (entry->entity == NULL ||
 543                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 544                         return true;
 545
 546                 screen_lyrics_switch(c, entry->entity->info.song, false);
 547                 return true;
 548 #endif
 549         case CMD_SCREEN_SWAP:
 550                 entry = browser_get_selected(browser);
 551                 if (entry->entity != NULL &&
 552                         entry->entity->type == MPD_INFO_ENTITY_TYPE_SONG)
 553                         screen_swap(c, entry->entity->info.song);
 554                 else
 555                         screen_swap(c, NULL);
 556                 return true;
 557
 558         default:
 559                 break;
 560         }
 561
 562         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 563                             cmd))
 564                 return true;
 565
 566         return false;
 567 }