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 <mpd/client.h>
  28
  29 #include <string.h>
  30
  31 #define BUFSIZE 1024
  32
  33 #ifndef NCMPC_MINI
  34 #define HIGHLIGHT  (0x01)
  35 #endif
  36
  37 static const char playlist_format[] = "*%s*";
  38
  39 #ifndef NCMPC_MINI
  40
  41 /* clear the highlight flag for all items in the filelist */
  42 static void
  43 clear_highlights(mpdclient_filelist_t *fl)
  44 {
  45         guint i;
  46
  47         for (i = 0; i < filelist_length(fl); ++i) {
  48                 struct filelist_entry *entry = filelist_get(fl, i);
  49
  50                 entry->flags &= ~HIGHLIGHT;
  51         }
  52 }
  53
  54 /* change the highlight flag for a song */
  55 static void
  56 set_highlight(mpdclient_filelist_t *fl, struct mpd_song *song, int highlight)
  57 {
  58         int i = filelist_find_song(fl, song);
  59         struct filelist_entry *entry;
  60
  61         if (i < 0)
  62                 return;
  63
  64         entry = filelist_get(fl, i);
  65         if (highlight)
  66                 entry->flags |= HIGHLIGHT;
  67         else
  68                 entry->flags &= ~HIGHLIGHT;
  69 }
  70
  71 /* sync highlight flags with playlist */
  72 void
  73 sync_highlights(mpdclient_t *c, mpdclient_filelist_t *fl)
  74 {
  75         guint i;
  76
  77         for (i = 0; i < filelist_length(fl); ++i) {
  78                 struct filelist_entry *entry = filelist_get(fl, i);
  79                 struct mpd_entity *entity = entry->entity;
  80
  81                 if (entity != NULL && mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
  82                         const struct mpd_song *song =
  83                                 mpd_entity_get_song(entity);
  84
  85                         if (playlist_get_index_from_same_song(c, song) >= 0)
  86                                 entry->flags |= HIGHLIGHT;
  87                         else
  88                                 entry->flags &= ~HIGHLIGHT;
  89                 }
  90         }
  91 }
  92
  93 /* the playlist has been updated -> fix highlights */
  94 void
  95 browser_playlist_changed(struct screen_browser *browser, mpdclient_t *c,
  96                          int event, gpointer data)
  97 {
  98         if (browser->filelist == NULL)
  99                 return;
 100
 101         switch(event) {
 102         case PLAYLIST_EVENT_CLEAR:
 103                 clear_highlights(browser->filelist);
 104                 break;
 105         case PLAYLIST_EVENT_ADD:
 106                 set_highlight(browser->filelist, (struct mpd_song *) data, 1);
 107                 break;
 108         case PLAYLIST_EVENT_DELETE:
 109                 set_highlight(browser->filelist, (struct mpd_song *) data, 0);
 110                 break;
 111         case PLAYLIST_EVENT_MOVE:
 112                 break;
 113         default:
 114                 sync_highlights(c, browser->filelist);
 115                 break;
 116         }
 117 }
 118
 119 #endif
 120
 121 /* list_window callback */
 122 const char *
 123 browser_lw_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED char **second_column, void *data)
 124 {
 125         static char buf[BUFSIZE];
 126         mpdclient_filelist_t *fl = (mpdclient_filelist_t *) data;
 127         filelist_entry_t *entry;
 128         struct mpd_entity *entity;
 129
 130         if (fl == NULL || idx >= filelist_length(fl))
 131                 return NULL;
 132
 133         entry = filelist_get(fl, idx);
 134         assert(entry != NULL);
 135
 136         entity = entry->entity;
 137 #ifndef NCMPC_MINI
 138         *highlight = (entry->flags & HIGHLIGHT) != 0;
 139 #else
 140         *highlight = false;
 141 #endif
 142
 143         if( entity == NULL )
 144                 return "[..]";
 145
 146         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 147                 const struct mpd_directory *dir =
 148                         mpd_entity_get_directory(entity);
 149                 char *directory = utf8_to_locale(g_basename(mpd_directory_get_path(dir)));
 150
 151                 g_snprintf(buf, BUFSIZE, "[%s]", directory);
 152                 g_free(directory);
 153                 return buf;
 154         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
 155                 const struct mpd_song *song = mpd_entity_get_song(entity);
 156
 157                 strfsong(buf, BUFSIZE, options.list_format, song);
 158                 return buf;
 159         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 160                 const struct mpd_playlist *playlist =
 161                         mpd_entity_get_playlist(entity);
 162                 char *filename = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 163
 164                 g_snprintf(buf, BUFSIZE, playlist_format, filename);
 165                 g_free(filename);
 166                 return buf;
 167         }
 168
 169         return "Error: Unknown entry!";
 170 }
 171
 172 static bool
 173 load_playlist(mpdclient_t *c, const struct mpd_playlist *playlist)
 174 {
 175         char *filename = utf8_to_locale(mpd_playlist_get_path(playlist));
 176
 177         if (mpdclient_cmd_load_playlist(c, mpd_playlist_get_path(playlist)) == 0)
 178                 screen_status_printf(_("Loading playlist %s..."),
 179                                      g_basename(filename));
 180         g_free(filename);
 181         return true;
 182 }
 183
 184 static bool
 185 enqueue_and_play(mpdclient_t *c, filelist_entry_t *entry)
 186 {
 187         int idx;
 188         const struct mpd_song *song = mpd_entity_get_song(entry->entity);
 189
 190 #ifndef NCMPC_MINI
 191         if (!(entry->flags & HIGHLIGHT)) {
 192 #endif
 193                 if (mpdclient_cmd_add(c, song) == 0) {
 194                         char buf[BUFSIZE];
 195
 196 #ifndef NCMPC_MINI
 197                         entry->flags |= HIGHLIGHT;
 198 #endif
 199                         strfsong(buf, BUFSIZE, options.list_format, song);
 200                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 201                         mpdclient_update(c); /* get song id */
 202                 } else
 203                         return false;
 204 #ifndef NCMPC_MINI
 205         }
 206 #endif
 207
 208         idx = playlist_get_index_from_same_song(c, song);
 209         mpdclient_cmd_play(c, idx);
 210         return true;
 211 }
 212
 213 struct filelist_entry *
 214 browser_get_selected_entry(const struct screen_browser *browser)
 215 {
 216         if (browser->filelist == NULL ||
 217             browser->lw->selected_start < browser->lw->selected_end ||
 218             browser->lw->selected >= filelist_length(browser->filelist))
 219                 return NULL;
 220
 221         return filelist_get(browser->filelist, browser->lw->selected);
 222 }
 223
 224 static const struct mpd_entity *
 225 browser_get_selected_entity(const struct screen_browser *browser)
 226 {
 227         const struct filelist_entry *entry = browser_get_selected_entry(browser);
 228
 229         return entry != NULL
 230                 ? entry->entity
 231                 : NULL;
 232 }
 233
 234 static const struct mpd_song *
 235 browser_get_selected_song(const struct screen_browser *browser)
 236 {
 237         const struct mpd_entity *entity = browser_get_selected_entity(browser);
 238
 239         return entity != NULL &&
 240                 mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG
 241                 ? mpd_entity_get_song(entity)
 242                 : NULL;
 243 }
 244
 245 static struct filelist_entry *
 246 browser_get_index(const struct screen_browser *browser, unsigned i)
 247 {
 248         if (browser->filelist == NULL ||
 249             i >= filelist_length(browser->filelist))
 250                 return NULL;
 251
 252         return filelist_get(browser->filelist, i);
 253 }
 254
 255 static bool
 256 browser_handle_enter(struct screen_browser *browser, mpdclient_t *c)
 257 {
 258         struct filelist_entry *entry = browser_get_selected_entry(browser);
 259         struct mpd_entity *entity;
 260
 261         if (entry == NULL)
 262                 return false;
 263
 264         entity = entry->entity;
 265         if (entity == NULL)
 266                 return false;
 267
 268         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST)
 269                 return load_playlist(c, mpd_entity_get_playlist(entity));
 270         else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG)
 271                 return enqueue_and_play(c, entry);
 272         return false;
 273 }
 274
 275 static bool
 276 browser_select_entry(mpdclient_t *c, filelist_entry_t *entry,
 277                      G_GNUC_UNUSED gboolean toggle)
 278 {
 279         assert(entry != NULL);
 280         assert(entry->entity != NULL);
 281
 282         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_PLAYLIST)
 283                 return load_playlist(c, mpd_entity_get_playlist(entry->entity));
 284
 285         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 286                 const struct mpd_directory *dir =
 287                         mpd_entity_get_directory(entry->entity);
 288
 289                 if (mpdclient_cmd_add_path(c, mpd_directory_get_path(dir)) == 0) {
 290                         char *tmp = utf8_to_locale(mpd_directory_get_path(dir));
 291
 292                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 293                         g_free(tmp);
 294                 }
 295
 296                 return true;
 297         }
 298
 299         if (mpd_entity_get_type(entry->entity) != MPD_ENTITY_TYPE_SONG)
 300                 return false;
 301
 302 #ifndef NCMPC_MINI
 303         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 304 #endif
 305         {
 306                 const struct mpd_song *song =
 307                         mpd_entity_get_song(entry->entity);
 308
 309 #ifndef NCMPC_MINI
 310                 entry->flags |= HIGHLIGHT;
 311 #endif
 312
 313                 if (mpdclient_cmd_add(c, song) == 0) {
 314                         char buf[BUFSIZE];
 315
 316                         strfsong(buf, BUFSIZE, options.list_format, song);
 317                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 318                 }
 319 #ifndef NCMPC_MINI
 320         } else {
 321                 /* remove song from playlist */
 322                 const struct mpd_song *song =
 323                         mpd_entity_get_song(entry->entity);
 324                 int idx;
 325
 326                 entry->flags &= ~HIGHLIGHT;
 327
 328                 while ((idx = playlist_get_index_from_same_song(c, song)) >= 0)
 329                         mpdclient_cmd_delete(c, idx);
 330 #endif
 331         }
 332
 333         return true;
 334 }
 335
 336 static bool
 337 browser_handle_select(struct screen_browser *browser, mpdclient_t *c)
 338 {
 339         struct filelist_entry *entry;
 340
 341         if (browser->lw->range_selection) {
 342                 for (unsigned i = browser->lw->selected_start;
 343                          i <= browser->lw->selected_end; i++) {
 344                         entry = browser_get_index(browser, i);
 345
 346                         if (entry != NULL && entry->entity != NULL)
 347                                 browser_select_entry(c, entry, TRUE);
 348                 }
 349                 return false;
 350         } else {
 351                 entry = browser_get_selected_entry(browser);
 352
 353                 if (entry == NULL || entry->entity == NULL)
 354                         return false;
 355
 356                 return browser_select_entry(c, entry, TRUE);
 357         }
 358 }
 359
 360 static bool
 361 browser_handle_add(struct screen_browser *browser, mpdclient_t *c)
 362 {
 363         struct filelist_entry *entry;
 364
 365         if (browser->lw->range_selection) {
 366                 for (unsigned i = browser->lw->selected_start;
 367                          i <= browser->lw->selected_end; i++) {
 368                         entry = browser_get_index(browser, i);
 369
 370                         if (entry != NULL && entry->entity != NULL)
 371                                 browser_select_entry(c, entry, FALSE);
 372                 }
 373                 return false;
 374         } else {
 375                 entry = browser_get_selected_entry(browser);
 376
 377                 if (entry == NULL || entry->entity == NULL)
 378                         return false;
 379
 380                 return browser_select_entry(c, entry, FALSE);
 381         }
 382 }
 383
 384 static void
 385 browser_handle_select_all(struct screen_browser *browser, mpdclient_t *c)
 386 {
 387         guint i;
 388
 389         if (browser->filelist == NULL)
 390                 return;
 391
 392         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 393                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 394
 395                 if (entry != NULL && entry->entity != NULL)
 396                         browser_select_entry(c, entry, FALSE);
 397         }
 398 }
 399
 400 #ifdef HAVE_GETMOUSE
 401 static int
 402 browser_handle_mouse_event(struct screen_browser *browser, mpdclient_t *c)
 403 {
 404         int row;
 405         unsigned prev_selected = browser->lw->selected;
 406         unsigned long bstate;
 407         int length;
 408
 409         if (browser->filelist)
 410                 length = filelist_length(browser->filelist);
 411         else
 412                 length = 0;
 413
 414         if (screen_get_mouse_event(c, &bstate, &row) ||
 415             list_window_mouse(browser->lw, length, bstate, row))
 416                 return 1;
 417
 418         browser->lw->selected = browser->lw->start + row;
 419         list_window_check_selected(browser->lw, length);
 420
 421         if( bstate & BUTTON1_CLICKED ) {
 422                 if (prev_selected == browser->lw->selected)
 423                         browser_handle_enter(browser, c);
 424         } else if (bstate & BUTTON3_CLICKED) {
 425                 if (prev_selected == browser->lw->selected)
 426                         browser_handle_select(browser, c);
 427         }
 428
 429         return 1;
 430 }
 431 #endif
 432
 433 bool
 434 browser_cmd(struct screen_browser *browser,
 435             struct mpdclient *c, command_t cmd)
 436 {
 437         const struct mpd_song *song;
 438
 439         if (browser->filelist == NULL)
 440                 return false;
 441
 442         switch (cmd) {
 443         case CMD_PLAY:
 444                 browser_handle_enter(browser, c);
 445                 return true;
 446
 447         case CMD_SELECT:
 448                 if (browser_handle_select(browser, c))
 449                         /* continue and select next item... */
 450                         cmd = CMD_LIST_NEXT;
 451
 452                 /* call list_window_cmd to go to the next item */
 453                 break;
 454
 455         case CMD_ADD:
 456                 if (browser_handle_add(browser, c))
 457                         /* continue and select next item... */
 458                         cmd = CMD_LIST_NEXT;
 459
 460                 /* call list_window_cmd to go to the next item */
 461                 break;
 462
 463         case CMD_SELECT_ALL:
 464                 browser_handle_select_all(browser, c);
 465                 return true;
 466
 467         case CMD_LIST_FIND:
 468         case CMD_LIST_RFIND:
 469         case CMD_LIST_FIND_NEXT:
 470         case CMD_LIST_RFIND_NEXT:
 471                 screen_find(browser->lw, filelist_length(browser->filelist),
 472                             cmd, browser_lw_callback,
 473                             browser->filelist);
 474                 return true;
 475         case CMD_LIST_JUMP:
 476                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 477                 return true;
 478
 479 #ifdef HAVE_GETMOUSE
 480         case CMD_MOUSE_EVENT:
 481                 browser_handle_mouse_event(browser, c);
 482                 return true;
 483 #endif
 484
 485 #ifdef ENABLE_SONG_SCREEN
 486         case CMD_SCREEN_SONG:
 487                 song = browser_get_selected_song(browser);
 488                 if (song == NULL)
 489                         return false;
 490
 491                 screen_song_switch(c, song);
 492                 return true;
 493 #endif
 494
 495         case CMD_LOCATE:
 496                 song = browser_get_selected_song(browser);
 497                 if (song == NULL)
 498                         return false;
 499
 500                 screen_file_goto_song(c, song);
 501                 return true;
 502
 503 #ifdef ENABLE_LYRICS_SCREEN
 504         case CMD_SCREEN_LYRICS:
 505                 song = browser_get_selected_song(browser);
 506                 if (song == NULL)
 507                         return false;
 508
 509                 screen_lyrics_switch(c, song, false);
 510                 return true;
 511 #endif
 512         case CMD_SCREEN_SWAP:
 513                 screen_swap(c, browser_get_selected_song(browser));
 514                 return true;
 515
 516         default:
 517                 break;
 518         }
 519
 520         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 521                             cmd))
 522                 return true;
 523
 524         return false;
 525 }