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 #include "mpdclient.h"
  27 #include "filelist.h"
  28
  29 #include <mpd/client.h>
  30
  31 #include <string.h>
  32
  33 #define BUFSIZE 1024
  34
  35 #ifndef NCMPC_MINI
  36 #define HIGHLIGHT  (0x01)
  37 #endif
  38
  39 static const char playlist_format[] = "*%s*";
  40
  41 #ifndef NCMPC_MINI
  42
  43 /* clear the highlight flag for all items in the filelist */
  44 static void
  45 clear_highlights(struct filelist *fl)
  46 {
  47         guint i;
  48
  49         for (i = 0; i < filelist_length(fl); ++i) {
  50                 struct filelist_entry *entry = filelist_get(fl, i);
  51
  52                 entry->flags &= ~HIGHLIGHT;
  53         }
  54 }
  55
  56 /* change the highlight flag for a song */
  57 static void
  58 set_highlight(struct filelist *fl, struct mpd_song *song, int highlight)
  59 {
  60         int i = filelist_find_song(fl, song);
  61         struct filelist_entry *entry;
  62
  63         if (i < 0)
  64                 return;
  65
  66         entry = filelist_get(fl, i);
  67         if (highlight)
  68                 entry->flags |= HIGHLIGHT;
  69         else
  70                 entry->flags &= ~HIGHLIGHT;
  71 }
  72
  73 /* sync highlight flags with playlist */
  74 void
  75 sync_highlights(struct mpdclient *c, struct filelist *fl)
  76 {
  77         guint i;
  78
  79         for (i = 0; i < filelist_length(fl); ++i) {
  80                 struct filelist_entry *entry = filelist_get(fl, i);
  81                 struct mpd_entity *entity = entry->entity;
  82
  83                 if (entity != NULL && mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
  84                         const struct mpd_song *song =
  85                                 mpd_entity_get_song(entity);
  86
  87                         if (playlist_get_index_from_same_song(c, song) >= 0)
  88                                 entry->flags |= HIGHLIGHT;
  89                         else
  90                                 entry->flags &= ~HIGHLIGHT;
  91                 }
  92         }
  93 }
  94
  95 /* the playlist has been updated -> fix highlights */
  96 void
  97 browser_playlist_changed(struct screen_browser *browser, struct mpdclient *c,
  98                          int event, gpointer data)
  99 {
 100         if (browser->filelist == NULL)
 101                 return;
 102
 103         switch(event) {
 104         case PLAYLIST_EVENT_CLEAR:
 105                 clear_highlights(browser->filelist);
 106                 break;
 107         case PLAYLIST_EVENT_ADD:
 108                 set_highlight(browser->filelist, (struct mpd_song *) data, 1);
 109                 break;
 110         case PLAYLIST_EVENT_DELETE:
 111                 set_highlight(browser->filelist, (struct mpd_song *) data, 0);
 112                 break;
 113         case PLAYLIST_EVENT_MOVE:
 114                 break;
 115         default:
 116                 sync_highlights(c, browser->filelist);
 117                 break;
 118         }
 119 }
 120
 121 #endif
 122
 123 /* list_window callback */
 124 const char *
 125 browser_lw_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED char **second_column, void *data)
 126 {
 127         struct filelist *fl = (struct filelist *) data;
 128         static char buf[BUFSIZE];
 129         struct filelist_entry *entry;
 130         struct mpd_entity *entity;
 131
 132         if (fl == NULL || idx >= filelist_length(fl))
 133                 return NULL;
 134
 135         entry = filelist_get(fl, idx);
 136         assert(entry != NULL);
 137
 138         entity = entry->entity;
 139 #ifndef NCMPC_MINI
 140         *highlight = (entry->flags & HIGHLIGHT) != 0;
 141 #else
 142         *highlight = false;
 143 #endif
 144
 145         if( entity == NULL )
 146                 return "[..]";
 147
 148         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 149                 const struct mpd_directory *dir =
 150                         mpd_entity_get_directory(entity);
 151                 char *directory = utf8_to_locale(g_basename(mpd_directory_get_path(dir)));
 152
 153                 g_snprintf(buf, BUFSIZE, "[%s]", directory);
 154                 g_free(directory);
 155                 return buf;
 156         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
 157                 const struct mpd_song *song = mpd_entity_get_song(entity);
 158
 159                 strfsong(buf, BUFSIZE, options.list_format, song);
 160                 return buf;
 161         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 162                 const struct mpd_playlist *playlist =
 163                         mpd_entity_get_playlist(entity);
 164                 char *filename = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 165
 166                 g_snprintf(buf, BUFSIZE, playlist_format, filename);
 167                 g_free(filename);
 168                 return buf;
 169         }
 170
 171         return "Error: Unknown entry!";
 172 }
 173
 174 static bool
 175 load_playlist(struct mpdclient *c, const struct mpd_playlist *playlist)
 176 {
 177         char *filename = utf8_to_locale(mpd_playlist_get_path(playlist));
 178
 179         if (mpdclient_cmd_load_playlist(c, mpd_playlist_get_path(playlist)) == 0)
 180                 screen_status_printf(_("Loading playlist %s..."),
 181                                      g_basename(filename));
 182         g_free(filename);
 183         return true;
 184 }
 185
 186 static bool
 187 enqueue_and_play(struct mpdclient *c, struct filelist_entry *entry)
 188 {
 189         int idx;
 190         const struct mpd_song *song = mpd_entity_get_song(entry->entity);
 191
 192 #ifndef NCMPC_MINI
 193         if (!(entry->flags & HIGHLIGHT)) {
 194 #endif
 195                 if (mpdclient_cmd_add(c, song) == 0) {
 196                         char buf[BUFSIZE];
 197
 198 #ifndef NCMPC_MINI
 199                         entry->flags |= HIGHLIGHT;
 200 #endif
 201                         strfsong(buf, BUFSIZE, options.list_format, song);
 202                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 203                         mpdclient_update(c); /* get song id */
 204                 } else
 205                         return false;
 206 #ifndef NCMPC_MINI
 207         }
 208 #endif
 209
 210         idx = playlist_get_index_from_same_song(c, song);
 211         mpdclient_cmd_play(c, idx);
 212         return true;
 213 }
 214
 215 struct filelist_entry *
 216 browser_get_selected_entry(const struct screen_browser *browser)
 217 {
 218         if (browser->filelist == NULL ||
 219             browser->lw->selected_start < browser->lw->selected_end ||
 220             browser->lw->selected >= filelist_length(browser->filelist))
 221                 return NULL;
 222
 223         return filelist_get(browser->filelist, browser->lw->selected);
 224 }
 225
 226 static const struct mpd_entity *
 227 browser_get_selected_entity(const struct screen_browser *browser)
 228 {
 229         const struct filelist_entry *entry = browser_get_selected_entry(browser);
 230
 231         return entry != NULL
 232                 ? entry->entity
 233                 : NULL;
 234 }
 235
 236 static const struct mpd_song *
 237 browser_get_selected_song(const struct screen_browser *browser)
 238 {
 239         const struct mpd_entity *entity = browser_get_selected_entity(browser);
 240
 241         return entity != NULL &&
 242                 mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG
 243                 ? mpd_entity_get_song(entity)
 244                 : NULL;
 245 }
 246
 247 static struct filelist_entry *
 248 browser_get_index(const struct screen_browser *browser, unsigned i)
 249 {
 250         if (browser->filelist == NULL ||
 251             i >= filelist_length(browser->filelist))
 252                 return NULL;
 253
 254         return filelist_get(browser->filelist, i);
 255 }
 256
 257 static bool
 258 browser_handle_enter(struct screen_browser *browser, struct mpdclient *c)
 259 {
 260         struct filelist_entry *entry = browser_get_selected_entry(browser);
 261         struct mpd_entity *entity;
 262
 263         if (entry == NULL)
 264                 return false;
 265
 266         entity = entry->entity;
 267         if (entity == NULL)
 268                 return false;
 269
 270         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST)
 271                 return load_playlist(c, mpd_entity_get_playlist(entity));
 272         else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG)
 273                 return enqueue_and_play(c, entry);
 274         return false;
 275 }
 276
 277 static bool
 278 browser_select_entry(struct mpdclient *c, struct filelist_entry *entry,
 279                      G_GNUC_UNUSED gboolean toggle)
 280 {
 281         assert(entry != NULL);
 282         assert(entry->entity != NULL);
 283
 284         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_PLAYLIST)
 285                 return load_playlist(c, mpd_entity_get_playlist(entry->entity));
 286
 287         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 288                 const struct mpd_directory *dir =
 289                         mpd_entity_get_directory(entry->entity);
 290
 291                 if (mpdclient_cmd_add_path(c, mpd_directory_get_path(dir)) == 0) {
 292                         char *tmp = utf8_to_locale(mpd_directory_get_path(dir));
 293
 294                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 295                         g_free(tmp);
 296                 }
 297
 298                 return true;
 299         }
 300
 301         if (mpd_entity_get_type(entry->entity) != MPD_ENTITY_TYPE_SONG)
 302                 return false;
 303
 304 #ifndef NCMPC_MINI
 305         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 306 #endif
 307         {
 308                 const struct mpd_song *song =
 309                         mpd_entity_get_song(entry->entity);
 310
 311 #ifndef NCMPC_MINI
 312                 entry->flags |= HIGHLIGHT;
 313 #endif
 314
 315                 if (mpdclient_cmd_add(c, song) == 0) {
 316                         char buf[BUFSIZE];
 317
 318                         strfsong(buf, BUFSIZE, options.list_format, song);
 319                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 320                 }
 321 #ifndef NCMPC_MINI
 322         } else {
 323                 /* remove song from playlist */
 324                 const struct mpd_song *song =
 325                         mpd_entity_get_song(entry->entity);
 326                 int idx;
 327
 328                 entry->flags &= ~HIGHLIGHT;
 329
 330                 while ((idx = playlist_get_index_from_same_song(c, song)) >= 0)
 331                         mpdclient_cmd_delete(c, idx);
 332 #endif
 333         }
 334
 335         return true;
 336 }
 337
 338 static bool
 339 browser_handle_select(struct screen_browser *browser, struct mpdclient *c)
 340 {
 341         struct filelist_entry *entry;
 342
 343         if (browser->lw->range_selection) {
 344                 for (unsigned i = browser->lw->selected_start;
 345                          i <= browser->lw->selected_end; i++) {
 346                         entry = browser_get_index(browser, i);
 347
 348                         if (entry != NULL && entry->entity != NULL)
 349                                 browser_select_entry(c, entry, TRUE);
 350                 }
 351                 return false;
 352         } else {
 353                 entry = browser_get_selected_entry(browser);
 354
 355                 if (entry == NULL || entry->entity == NULL)
 356                         return false;
 357
 358                 return browser_select_entry(c, entry, TRUE);
 359         }
 360 }
 361
 362 static bool
 363 browser_handle_add(struct screen_browser *browser, struct mpdclient *c)
 364 {
 365         struct filelist_entry *entry;
 366
 367         if (browser->lw->range_selection) {
 368                 for (unsigned i = browser->lw->selected_start;
 369                          i <= browser->lw->selected_end; i++) {
 370                         entry = browser_get_index(browser, i);
 371
 372                         if (entry != NULL && entry->entity != NULL)
 373                                 browser_select_entry(c, entry, FALSE);
 374                 }
 375                 return false;
 376         } else {
 377                 entry = browser_get_selected_entry(browser);
 378
 379                 if (entry == NULL || entry->entity == NULL)
 380                         return false;
 381
 382                 return browser_select_entry(c, entry, FALSE);
 383         }
 384 }
 385
 386 static void
 387 browser_handle_select_all(struct screen_browser *browser, struct mpdclient *c)
 388 {
 389         guint i;
 390
 391         if (browser->filelist == NULL)
 392                 return;
 393
 394         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 395                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 396
 397                 if (entry != NULL && entry->entity != NULL)
 398                         browser_select_entry(c, entry, FALSE);
 399         }
 400 }
 401
 402 #ifdef HAVE_GETMOUSE
 403 static int
 404 browser_handle_mouse_event(struct screen_browser *browser, struct mpdclient *c)
 405 {
 406         int row;
 407         unsigned prev_selected = browser->lw->selected;
 408         unsigned long bstate;
 409         int length;
 410
 411         if (browser->filelist)
 412                 length = filelist_length(browser->filelist);
 413         else
 414                 length = 0;
 415
 416         if (screen_get_mouse_event(c, &bstate, &row) ||
 417             list_window_mouse(browser->lw, length, bstate, row))
 418                 return 1;
 419
 420         browser->lw->selected = browser->lw->start + row;
 421         list_window_check_selected(browser->lw, length);
 422
 423         if( bstate & BUTTON1_CLICKED ) {
 424                 if (prev_selected == browser->lw->selected)
 425                         browser_handle_enter(browser, c);
 426         } else if (bstate & BUTTON3_CLICKED) {
 427                 if (prev_selected == browser->lw->selected)
 428                         browser_handle_select(browser, c);
 429         }
 430
 431         return 1;
 432 }
 433 #endif
 434
 435 bool
 436 browser_cmd(struct screen_browser *browser,
 437             struct mpdclient *c, command_t cmd)
 438 {
 439         const struct mpd_song *song;
 440
 441         if (browser->filelist == NULL)
 442                 return false;
 443
 444         switch (cmd) {
 445         case CMD_PLAY:
 446                 browser_handle_enter(browser, c);
 447                 return true;
 448
 449         case CMD_SELECT:
 450                 if (browser_handle_select(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_ADD:
 458                 if (browser_handle_add(browser, c))
 459                         /* continue and select next item... */
 460                         cmd = CMD_LIST_NEXT;
 461
 462                 /* call list_window_cmd to go to the next item */
 463                 break;
 464
 465         case CMD_SELECT_ALL:
 466                 browser_handle_select_all(browser, c);
 467                 return true;
 468
 469         case CMD_LIST_FIND:
 470         case CMD_LIST_RFIND:
 471         case CMD_LIST_FIND_NEXT:
 472         case CMD_LIST_RFIND_NEXT:
 473                 screen_find(browser->lw, filelist_length(browser->filelist),
 474                             cmd, browser_lw_callback,
 475                             browser->filelist);
 476                 return true;
 477         case CMD_LIST_JUMP:
 478                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 479                 return true;
 480
 481 #ifdef HAVE_GETMOUSE
 482         case CMD_MOUSE_EVENT:
 483                 browser_handle_mouse_event(browser, c);
 484                 return true;
 485 #endif
 486
 487 #ifdef ENABLE_SONG_SCREEN
 488         case CMD_SCREEN_SONG:
 489                 song = browser_get_selected_song(browser);
 490                 if (song == NULL)
 491                         return false;
 492
 493                 screen_song_switch(c, song);
 494                 return true;
 495 #endif
 496
 497         case CMD_LOCATE:
 498                 song = browser_get_selected_song(browser);
 499                 if (song == NULL)
 500                         return false;
 501
 502                 screen_file_goto_song(c, song);
 503                 return true;
 504
 505 #ifdef ENABLE_LYRICS_SCREEN
 506         case CMD_SCREEN_LYRICS:
 507                 song = browser_get_selected_song(browser);
 508                 if (song == NULL)
 509                         return false;
 510
 511                 screen_lyrics_switch(c, song, false);
 512                 return true;
 513 #endif
 514         case CMD_SCREEN_SWAP:
 515                 screen_swap(c, browser_get_selected_song(browser));
 516                 return true;
 517
 518         default:
 519                 break;
 520         }
 521
 522         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 523                             cmd))
 524                 return true;
 525
 526         return false;
 527 }