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 struct filelist_entry *
 271 browser_get_selected_entry(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 mpd_InfoEntity *
 282 browser_get_selected_entity(const struct screen_browser *browser)
 283 {
 284         struct filelist_entry *entry = browser_get_selected_entry(browser);
 285
 286         return entry != NULL
 287                 ? entry->entity
 288                 : NULL;
 289 }
 290
 291 static struct mpd_song *
 292 browser_get_selected_song(const struct screen_browser *browser)
 293 {
 294         struct mpd_InfoEntity *entity = browser_get_selected_entity(browser);
 295
 296         return entity != NULL && entity->type == MPD_INFO_ENTITY_TYPE_SONG
 297                 ? entity->info.song
 298                 : NULL;
 299 }
 300
 301 static struct filelist_entry *
 302 browser_get_index(const struct screen_browser *browser, unsigned i)
 303 {
 304         if (browser->filelist == NULL ||
 305             i >= filelist_length(browser->filelist))
 306                 return NULL;
 307
 308         return filelist_get(browser->filelist, i);
 309 }
 310
 311 static bool
 312 browser_handle_enter(struct screen_browser *browser, mpdclient_t *c)
 313 {
 314         struct filelist_entry *entry = browser_get_selected_entry(browser);
 315         mpd_InfoEntity *entity;
 316
 317         if (entry == NULL)
 318                 return false;
 319
 320         entity = entry->entity;
 321         if (entity == NULL || entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY)
 322                 return browser_change_directory(browser, c, entry, NULL);
 323         else if (entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 324                 return load_playlist(c, entity->info.playlistFile);
 325         else if (entity->type == MPD_INFO_ENTITY_TYPE_SONG)
 326                 return enqueue_and_play(c, entry);
 327         return false;
 328 }
 329
 330 static bool
 331 browser_select_entry(mpdclient_t *c, filelist_entry_t *entry,
 332                      G_GNUC_UNUSED gboolean toggle)
 333 {
 334         assert(entry != NULL);
 335         assert(entry->entity != NULL);
 336
 337         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 338                 return load_playlist(c, entry->entity->info.playlistFile);
 339
 340         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 341                 mpd_Directory *dir = entry->entity->info.directory;
 342
 343                 if (mpdclient_cmd_add_path(c, dir->path) == 0) {
 344                         char *tmp = utf8_to_locale(dir->path);
 345
 346                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 347                         g_free(tmp);
 348                 }
 349
 350                 return true;
 351         }
 352
 353         if (entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 354                 return false;
 355
 356         assert(entry->entity->info.song != NULL);
 357
 358 #ifndef NCMPC_MINI
 359         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 360 #endif
 361         {
 362                 mpd_Song *song = entry->entity->info.song;
 363
 364 #ifndef NCMPC_MINI
 365                 entry->flags |= HIGHLIGHT;
 366 #endif
 367
 368                 if (mpdclient_cmd_add(c, song) == 0) {
 369                         char buf[BUFSIZE];
 370
 371                         strfsong(buf, BUFSIZE, options.list_format, song);
 372                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 373                 }
 374 #ifndef NCMPC_MINI
 375         } else {
 376                 /* remove song from playlist */
 377                 mpd_Song *song = entry->entity->info.song;
 378                 int idx;
 379
 380                 entry->flags &= ~HIGHLIGHT;
 381
 382                 while ((idx = playlist_get_index_from_same_song(c, song)) >= 0)
 383                         mpdclient_cmd_delete(c, idx);
 384 #endif
 385         }
 386
 387         return true;
 388 }
 389
 390 static bool
 391 browser_handle_select(struct screen_browser *browser, mpdclient_t *c)
 392 {
 393         struct filelist_entry *entry;
 394
 395         if (browser->lw->range_selection) {
 396                 for (unsigned i = browser->lw->selected_start;
 397                          i <= browser->lw->selected_end; i++) {
 398                         entry = browser_get_index(browser, i);
 399
 400                         if (entry != NULL && entry->entity != NULL)
 401                                 browser_select_entry(c, entry, TRUE);
 402                 }
 403                 return false;
 404         } else {
 405                 entry = browser_get_selected_entry(browser);
 406
 407                 if (entry == NULL || entry->entity == NULL)
 408                         return false;
 409
 410                 return browser_select_entry(c, entry, TRUE);
 411         }
 412 }
 413
 414 static bool
 415 browser_handle_add(struct screen_browser *browser, mpdclient_t *c)
 416 {
 417         struct filelist_entry *entry;
 418
 419         if (browser->lw->range_selection) {
 420                 for (unsigned i = browser->lw->selected_start;
 421                          i <= browser->lw->selected_end; i++) {
 422                         entry = browser_get_index(browser, i);
 423
 424                         if (entry != NULL && entry->entity != NULL)
 425                                 browser_select_entry(c, entry, FALSE);
 426                 }
 427                 return false;
 428         } else {
 429                 entry = browser_get_selected_entry(browser);
 430
 431                 if (entry == NULL || entry->entity == NULL)
 432                         return false;
 433
 434                 return browser_select_entry(c, entry, FALSE);
 435         }
 436 }
 437
 438 static void
 439 browser_handle_select_all(struct screen_browser *browser, mpdclient_t *c)
 440 {
 441         guint i;
 442
 443         if (browser->filelist == NULL)
 444                 return;
 445
 446         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 447                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 448
 449                 if (entry != NULL && entry->entity != NULL)
 450                         browser_select_entry(c, entry, FALSE);
 451         }
 452 }
 453
 454 #ifdef HAVE_GETMOUSE
 455 static int
 456 browser_handle_mouse_event(struct screen_browser *browser, mpdclient_t *c)
 457 {
 458         int row;
 459         unsigned prev_selected = browser->lw->selected;
 460         unsigned long bstate;
 461         int length;
 462
 463         if (browser->filelist)
 464                 length = filelist_length(browser->filelist);
 465         else
 466                 length = 0;
 467
 468         if (screen_get_mouse_event(c, &bstate, &row) ||
 469             list_window_mouse(browser->lw, length, bstate, row))
 470                 return 1;
 471
 472         browser->lw->selected = browser->lw->start + row;
 473         list_window_check_selected(browser->lw, length);
 474
 475         if( bstate & BUTTON1_CLICKED ) {
 476                 if (prev_selected == browser->lw->selected)
 477                         browser_handle_enter(browser, c);
 478         } else if (bstate & BUTTON3_CLICKED) {
 479                 if (prev_selected == browser->lw->selected)
 480                         browser_handle_select(browser, c);
 481         }
 482
 483         return 1;
 484 }
 485 #endif
 486
 487 bool
 488 browser_cmd(struct screen_browser *browser,
 489             struct mpdclient *c, command_t cmd)
 490 {
 491         struct mpd_song *song;
 492
 493         switch (cmd) {
 494         case CMD_PLAY:
 495                 browser_handle_enter(browser, c);
 496                 return true;
 497
 498         case CMD_SELECT:
 499                 if (browser_handle_select(browser, c))
 500                         /* continue and select next item... */
 501                         cmd = CMD_LIST_NEXT;
 502
 503                 /* call list_window_cmd to go to the next item */
 504                 break;
 505
 506         case CMD_ADD:
 507                 if (browser_handle_add(browser, c))
 508                         /* continue and select next item... */
 509                         cmd = CMD_LIST_NEXT;
 510
 511                 /* call list_window_cmd to go to the next item */
 512                 break;
 513
 514         case CMD_SELECT_ALL:
 515                 browser_handle_select_all(browser, c);
 516                 return true;
 517
 518         case CMD_LIST_FIND:
 519         case CMD_LIST_RFIND:
 520         case CMD_LIST_FIND_NEXT:
 521         case CMD_LIST_RFIND_NEXT:
 522                 screen_find(browser->lw, filelist_length(browser->filelist),
 523                             cmd, browser_lw_callback,
 524                             browser->filelist);
 525                 return true;
 526         case CMD_LIST_JUMP:
 527                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 528                 return true;
 529
 530 #ifdef HAVE_GETMOUSE
 531         case CMD_MOUSE_EVENT:
 532                 browser_handle_mouse_event(browser, c);
 533                 return true;
 534 #endif
 535
 536 #ifdef ENABLE_SONG_SCREEN
 537         case CMD_SCREEN_SONG:
 538                 song = browser_get_selected_song(browser);
 539                 if (song == NULL)
 540                         return false;
 541
 542                 screen_song_switch(c, song);
 543                 return true;
 544 #endif
 545
 546         case CMD_LOCATE:
 547                 song = browser_get_selected_song(browser);
 548                 if (song == NULL)
 549                         return false;
 550
 551                 screen_file_goto_song(c, song);
 552                 return true;
 553
 554 #ifdef ENABLE_LYRICS_SCREEN
 555         case CMD_SCREEN_LYRICS:
 556                 song = browser_get_selected_song(browser);
 557                 if (song == NULL)
 558                         return false;
 559
 560                 screen_lyrics_switch(c, song, false);
 561                 return true;
 562 #endif
 563         case CMD_SCREEN_SWAP:
 564                 screen_swap(c, browser_get_selected_song(browser));
 565                 return true;
 566
 567         default:
 568                 break;
 569         }
 570
 571         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 572                             cmd))
 573                 return true;
 574
 575         return false;
 576 }