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, filelist_entry_t *entry)
 230 {
 231         mpd_InfoEntity *entity = entry->entity;
 232         mpd_PlaylistFile *plf = entity->info.playlistFile;
 233         char *filename = utf8_to_locale(plf->path);
 234
 235         if (mpdclient_cmd_load_playlist(c, plf->path) == 0)
 236                 screen_status_printf(_("Loading playlist %s..."),
 237                                      g_basename(filename));
 238         g_free(filename);
 239         return true;
 240 }
 241
 242 static bool
 243 enqueue_and_play(mpdclient_t *c, filelist_entry_t *entry)
 244 {
 245         int idx;
 246         mpd_InfoEntity *entity = entry->entity;
 247         mpd_Song *song = entity->info.song;
 248
 249 #ifndef NCMPC_MINI
 250         if (!(entry->flags & HIGHLIGHT)) {
 251 #endif
 252                 if (mpdclient_cmd_add(c, song) == 0) {
 253                         char buf[BUFSIZE];
 254
 255 #ifndef NCMPC_MINI
 256                         entry->flags |= HIGHLIGHT;
 257 #endif
 258                         strfsong(buf, BUFSIZE, options.list_format, song);
 259                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 260                         mpdclient_update(c); /* get song id */
 261                 } else
 262                         return false;
 263 #ifndef NCMPC_MINI
 264         }
 265 #endif
 266
 267         idx = playlist_get_index_from_same_song(c, song);
 268         mpdclient_cmd_play(c, idx);
 269         return true;
 270 }
 271
 272 static struct filelist_entry *
 273 browser_get_selected(const struct screen_browser *browser)
 274 {
 275         if (browser->filelist == NULL ||
 276             browser->lw->selected_start < browser->lw->selected_end ||
 277             browser->lw->selected >= filelist_length(browser->filelist))
 278                 return NULL;
 279
 280         return filelist_get(browser->filelist, browser->lw->selected);
 281 }
 282
 283 static struct filelist_entry *
 284 browser_get_index(const struct screen_browser *browser, unsigned i)
 285 {
 286         if (browser->filelist == NULL ||
 287             i >= filelist_length(browser->filelist))
 288                 return NULL;
 289
 290         return filelist_get(browser->filelist, i);
 291 }
 292
 293 static bool
 294 browser_handle_enter(struct screen_browser *browser, mpdclient_t *c)
 295 {
 296         struct filelist_entry *entry = browser_get_selected(browser);
 297         mpd_InfoEntity *entity;
 298
 299         if (entry == NULL)
 300                 return false;
 301
 302         entity = entry->entity;
 303         if (entity == NULL || entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY)
 304                 return browser_change_directory(browser, c, entry, NULL);
 305         else if (entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 306                 return load_playlist(c, entry);
 307         else if (entity->type == MPD_INFO_ENTITY_TYPE_SONG)
 308                 return enqueue_and_play(c, entry);
 309         return false;
 310 }
 311
 312 static bool
 313 browser_select_entry(mpdclient_t *c, filelist_entry_t *entry,
 314                      G_GNUC_UNUSED gboolean toggle)
 315 {
 316         assert(entry != NULL);
 317         assert(entry->entity != NULL);
 318
 319         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 320                 return load_playlist(c, entry);
 321
 322         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 323                 mpd_Directory *dir = entry->entity->info.directory;
 324
 325                 if (mpdclient_cmd_add_path(c, dir->path) == 0) {
 326                         char *tmp = utf8_to_locale(dir->path);
 327
 328                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 329                         g_free(tmp);
 330                 }
 331
 332                 return true;
 333         }
 334
 335         if (entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 336                 return false;
 337
 338         assert(entry->entity->info.song != NULL);
 339
 340 #ifndef NCMPC_MINI
 341         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 342 #endif
 343         {
 344                 mpd_Song *song = entry->entity->info.song;
 345
 346 #ifndef NCMPC_MINI
 347                 entry->flags |= HIGHLIGHT;
 348 #endif
 349
 350                 if (mpdclient_cmd_add(c, song) == 0) {
 351                         char buf[BUFSIZE];
 352
 353                         strfsong(buf, BUFSIZE, options.list_format, song);
 354                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 355                 }
 356 #ifndef NCMPC_MINI
 357         } else {
 358                 /* remove song from playlist */
 359                 mpd_Song *song = entry->entity->info.song;
 360                 int idx;
 361
 362                 entry->flags &= ~HIGHLIGHT;
 363
 364                 while ((idx = playlist_get_index_from_same_song(c, song)) >= 0)
 365                         mpdclient_cmd_delete(c, idx);
 366 #endif
 367         }
 368
 369         return true;
 370 }
 371
 372 static bool
 373 browser_handle_select(struct screen_browser *browser, mpdclient_t *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, TRUE);
 384                 }
 385                 return false;
 386         } else {
 387                 entry = browser_get_selected(browser);
 388
 389                 if (entry == NULL || entry->entity == NULL)
 390                         return false;
 391
 392                 return browser_select_entry(c, entry, TRUE);
 393         }
 394 }
 395
 396 static bool
 397 browser_handle_add(struct screen_browser *browser, mpdclient_t *c)
 398 {
 399         struct filelist_entry *entry;
 400
 401         if (browser->lw->range_selection) {
 402                 for (unsigned i = browser->lw->selected_start;
 403                          i <= browser->lw->selected_end; i++) {
 404                         entry = browser_get_index(browser, i);
 405
 406                         if (entry != NULL && entry->entity != NULL)
 407                                 browser_select_entry(c, entry, FALSE);
 408                 }
 409                 return false;
 410         } else {
 411                 entry = browser_get_selected(browser);
 412
 413                 if (entry == NULL || entry->entity == NULL)
 414                         return false;
 415
 416                 return browser_select_entry(c, entry, FALSE);
 417         }
 418 }
 419
 420 static void
 421 browser_handle_select_all(struct screen_browser *browser, mpdclient_t *c)
 422 {
 423         guint i;
 424
 425         if (browser->filelist == NULL)
 426                 return;
 427
 428         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 429                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 430
 431                 if (entry != NULL && entry->entity != NULL)
 432                         browser_select_entry(c, entry, FALSE);
 433         }
 434 }
 435
 436 #ifdef HAVE_GETMOUSE
 437 static int
 438 browser_handle_mouse_event(struct screen_browser *browser, mpdclient_t *c)
 439 {
 440         int row;
 441         unsigned prev_selected = browser->lw->selected;
 442         unsigned long bstate;
 443         int length;
 444
 445         if (browser->filelist)
 446                 length = filelist_length(browser->filelist);
 447         else
 448                 length = 0;
 449
 450         if (screen_get_mouse_event(c, &bstate, &row) ||
 451             list_window_mouse(browser->lw, length, bstate, row))
 452                 return 1;
 453
 454         browser->lw->selected = browser->lw->start + row;
 455         list_window_check_selected(browser->lw, length);
 456
 457         if( bstate & BUTTON1_CLICKED ) {
 458                 if (prev_selected == browser->lw->selected)
 459                         browser_handle_enter(browser, c);
 460         } else if (bstate & BUTTON3_CLICKED) {
 461                 if (prev_selected == browser->lw->selected)
 462                         browser_handle_select(browser, c);
 463         }
 464
 465         return 1;
 466 }
 467 #endif
 468
 469 bool
 470 browser_cmd(struct screen_browser *browser,
 471             struct mpdclient *c, command_t cmd)
 472 {
 473         struct filelist_entry *entry;
 474
 475         switch (cmd) {
 476         case CMD_PLAY:
 477                 browser_handle_enter(browser, c);
 478                 return true;
 479
 480         case CMD_SELECT:
 481                 if (browser_handle_select(browser, c))
 482                         /* continue and select next item... */
 483                         cmd = CMD_LIST_NEXT;
 484
 485                 /* call list_window_cmd to go to the next item */
 486                 break;
 487
 488         case CMD_ADD:
 489                 if (browser_handle_add(browser, c))
 490                         /* continue and select next item... */
 491                         cmd = CMD_LIST_NEXT;
 492
 493                 /* call list_window_cmd to go to the next item */
 494                 break;
 495
 496         case CMD_SELECT_ALL:
 497                 browser_handle_select_all(browser, c);
 498                 return true;
 499
 500         case CMD_LIST_FIND:
 501         case CMD_LIST_RFIND:
 502         case CMD_LIST_FIND_NEXT:
 503         case CMD_LIST_RFIND_NEXT:
 504                 screen_find(browser->lw, filelist_length(browser->filelist),
 505                             cmd, browser_lw_callback,
 506                             browser->filelist);
 507                 return true;
 508         case CMD_LIST_JUMP:
 509                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 510                 return true;
 511
 512 #ifdef HAVE_GETMOUSE
 513         case CMD_MOUSE_EVENT:
 514                 browser_handle_mouse_event(browser, c);
 515                 return true;
 516 #endif
 517
 518 #ifdef ENABLE_SONG_SCREEN
 519         case CMD_SCREEN_SONG:
 520                 entry = browser_get_selected(browser);
 521                 if (entry == NULL || entry->entity == NULL ||
 522                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 523                         return false;
 524
 525                 screen_song_switch(c, entry->entity->info.song);
 526                 return true;
 527 #endif
 528
 529         case CMD_LOCATE:
 530                 entry = browser_get_selected(browser);
 531                 if (entry == NULL || entry->entity == NULL ||
 532                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 533                         return false;
 534
 535                 screen_file_goto_song(c, entry->entity->info.song);
 536                 return true;
 537
 538 #ifdef ENABLE_LYRICS_SCREEN
 539         case CMD_SCREEN_LYRICS:
 540                 entry = browser_get_selected(browser);
 541                 if (entry == NULL)
 542                         return false;
 543
 544                 if (entry->entity == NULL ||
 545                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 546                         return true;
 547
 548                 screen_lyrics_switch(c, entry->entity->info.song, false);
 549                 return true;
 550 #endif
 551         case CMD_SCREEN_SWAP:
 552                 entry = browser_get_selected(browser);
 553                 if (entry->entity != NULL &&
 554                         entry->entity->type == MPD_INFO_ENTITY_TYPE_SONG)
 555                         screen_swap(c, entry->entity->info.song);
 556                 else
 557                         screen_swap(c, NULL);
 558                 return true;
 559
 560         default:
 561                 break;
 562         }
 563
 564         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 565                             cmd))
 566                 return true;
 567
 568         return false;
 569 }