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->playlist,
  88                                                               song) >= 0)
  89                                 entry->flags |= HIGHLIGHT;
  90                         else
  91                                 entry->flags &= ~HIGHLIGHT;
  92                 }
  93         }
  94 }
  95
  96 /* the playlist has been updated -> fix highlights */
  97 void
  98 browser_playlist_changed(struct screen_browser *browser, struct mpdclient *c,
  99                          int event, gpointer data)
 100 {
 101         if (browser->filelist == NULL)
 102                 return;
 103
 104         switch(event) {
 105         case PLAYLIST_EVENT_CLEAR:
 106                 clear_highlights(browser->filelist);
 107                 break;
 108         case PLAYLIST_EVENT_ADD:
 109                 set_highlight(browser->filelist, (struct mpd_song *) data, 1);
 110                 break;
 111         case PLAYLIST_EVENT_DELETE:
 112                 set_highlight(browser->filelist, (struct mpd_song *) data, 0);
 113                 break;
 114         case PLAYLIST_EVENT_MOVE:
 115                 break;
 116         default:
 117                 sync_highlights(c, browser->filelist);
 118                 break;
 119         }
 120 }
 121
 122 #endif
 123
 124 /* list_window callback */
 125 const char *
 126 browser_lw_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED char **second_column, void *data)
 127 {
 128         struct filelist *fl = (struct filelist *) data;
 129         static char buf[BUFSIZE];
 130         struct filelist_entry *entry;
 131         struct mpd_entity *entity;
 132
 133         if (fl == NULL || idx >= filelist_length(fl))
 134                 return NULL;
 135
 136         entry = filelist_get(fl, idx);
 137         assert(entry != NULL);
 138
 139         entity = entry->entity;
 140 #ifndef NCMPC_MINI
 141         *highlight = (entry->flags & HIGHLIGHT) != 0;
 142 #else
 143         *highlight = false;
 144 #endif
 145
 146         if( entity == NULL )
 147                 return "[..]";
 148
 149         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 150                 const struct mpd_directory *dir =
 151                         mpd_entity_get_directory(entity);
 152                 char *directory = utf8_to_locale(g_basename(mpd_directory_get_path(dir)));
 153
 154                 g_snprintf(buf, BUFSIZE, "[%s]", directory);
 155                 g_free(directory);
 156                 return buf;
 157         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
 158                 const struct mpd_song *song = mpd_entity_get_song(entity);
 159
 160                 strfsong(buf, BUFSIZE, options.list_format, song);
 161                 return buf;
 162         } else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 163                 const struct mpd_playlist *playlist =
 164                         mpd_entity_get_playlist(entity);
 165                 char *filename = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 166
 167                 g_snprintf(buf, BUFSIZE, playlist_format, filename);
 168                 g_free(filename);
 169                 return buf;
 170         }
 171
 172         return "Error: Unknown entry!";
 173 }
 174
 175 static bool
 176 load_playlist(struct mpdclient *c, const struct mpd_playlist *playlist)
 177 {
 178         char *filename = utf8_to_locale(mpd_playlist_get_path(playlist));
 179
 180         if (mpdclient_cmd_load_playlist(c, mpd_playlist_get_path(playlist)) == 0)
 181                 screen_status_printf(_("Loading playlist %s..."),
 182                                      g_basename(filename));
 183         g_free(filename);
 184         return true;
 185 }
 186
 187 static bool
 188 enqueue_and_play(struct mpdclient *c, struct filelist_entry *entry)
 189 {
 190         int idx;
 191         const struct mpd_song *song = mpd_entity_get_song(entry->entity);
 192
 193 #ifndef NCMPC_MINI
 194         if (!(entry->flags & HIGHLIGHT)) {
 195 #endif
 196                 if (mpdclient_cmd_add(c, song) == 0) {
 197                         char buf[BUFSIZE];
 198
 199 #ifndef NCMPC_MINI
 200                         entry->flags |= HIGHLIGHT;
 201 #endif
 202                         strfsong(buf, BUFSIZE, options.list_format, song);
 203                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 204                         mpdclient_update(c); /* get song id */
 205                 } else
 206                         return false;
 207 #ifndef NCMPC_MINI
 208         }
 209 #endif
 210
 211         idx = playlist_get_index_from_same_song(&c->playlist, song);
 212         mpdclient_cmd_play(c, idx);
 213         return true;
 214 }
 215
 216 struct filelist_entry *
 217 browser_get_selected_entry(const struct screen_browser *browser)
 218 {
 219         if (browser->filelist == NULL ||
 220             browser->lw->selected_start < browser->lw->selected_end ||
 221             browser->lw->selected >= filelist_length(browser->filelist))
 222                 return NULL;
 223
 224         return filelist_get(browser->filelist, browser->lw->selected);
 225 }
 226
 227 static const struct mpd_entity *
 228 browser_get_selected_entity(const struct screen_browser *browser)
 229 {
 230         const struct filelist_entry *entry = browser_get_selected_entry(browser);
 231
 232         return entry != NULL
 233                 ? entry->entity
 234                 : NULL;
 235 }
 236
 237 static const struct mpd_song *
 238 browser_get_selected_song(const struct screen_browser *browser)
 239 {
 240         const struct mpd_entity *entity = browser_get_selected_entity(browser);
 241
 242         return entity != NULL &&
 243                 mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG
 244                 ? mpd_entity_get_song(entity)
 245                 : NULL;
 246 }
 247
 248 static struct filelist_entry *
 249 browser_get_index(const struct screen_browser *browser, unsigned i)
 250 {
 251         if (browser->filelist == NULL ||
 252             i >= filelist_length(browser->filelist))
 253                 return NULL;
 254
 255         return filelist_get(browser->filelist, i);
 256 }
 257
 258 static bool
 259 browser_handle_enter(struct screen_browser *browser, struct mpdclient *c)
 260 {
 261         struct filelist_entry *entry = browser_get_selected_entry(browser);
 262         struct mpd_entity *entity;
 263
 264         if (entry == NULL)
 265                 return false;
 266
 267         entity = entry->entity;
 268         if (entity == NULL)
 269                 return false;
 270
 271         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST)
 272                 return load_playlist(c, mpd_entity_get_playlist(entity));
 273         else if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG)
 274                 return enqueue_and_play(c, entry);
 275         return false;
 276 }
 277
 278 static bool
 279 browser_select_entry(struct mpdclient *c, struct filelist_entry *entry,
 280                      G_GNUC_UNUSED gboolean toggle)
 281 {
 282         assert(entry != NULL);
 283         assert(entry->entity != NULL);
 284
 285         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_PLAYLIST)
 286                 return load_playlist(c, mpd_entity_get_playlist(entry->entity));
 287
 288         if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY) {
 289                 const struct mpd_directory *dir =
 290                         mpd_entity_get_directory(entry->entity);
 291
 292                 if (mpdclient_cmd_add_path(c, mpd_directory_get_path(dir)) == 0) {
 293                         char *tmp = utf8_to_locale(mpd_directory_get_path(dir));
 294
 295                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 296                         g_free(tmp);
 297                 }
 298
 299                 return true;
 300         }
 301
 302         if (mpd_entity_get_type(entry->entity) != MPD_ENTITY_TYPE_SONG)
 303                 return false;
 304
 305 #ifndef NCMPC_MINI
 306         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 307 #endif
 308         {
 309                 const struct mpd_song *song =
 310                         mpd_entity_get_song(entry->entity);
 311
 312 #ifndef NCMPC_MINI
 313                 entry->flags |= HIGHLIGHT;
 314 #endif
 315
 316                 if (mpdclient_cmd_add(c, song) == 0) {
 317                         char buf[BUFSIZE];
 318
 319                         strfsong(buf, BUFSIZE, options.list_format, song);
 320                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 321                 }
 322 #ifndef NCMPC_MINI
 323         } else {
 324                 /* remove song from playlist */
 325                 const struct mpd_song *song =
 326                         mpd_entity_get_song(entry->entity);
 327                 int idx;
 328
 329                 entry->flags &= ~HIGHLIGHT;
 330
 331                 while ((idx = playlist_get_index_from_same_song(&c->playlist,
 332                                                                 song)) >= 0)
 333                         mpdclient_cmd_delete(c, idx);
 334 #endif
 335         }
 336
 337         return true;
 338 }
 339
 340 static bool
 341 browser_handle_select(struct screen_browser *browser, struct mpdclient *c)
 342 {
 343         struct filelist_entry *entry;
 344
 345         if (browser->lw->range_selection) {
 346                 for (unsigned i = browser->lw->selected_start;
 347                          i <= browser->lw->selected_end; i++) {
 348                         entry = browser_get_index(browser, i);
 349
 350                         if (entry != NULL && entry->entity != NULL)
 351                                 browser_select_entry(c, entry, TRUE);
 352                 }
 353                 return false;
 354         } else {
 355                 entry = browser_get_selected_entry(browser);
 356
 357                 if (entry == NULL || entry->entity == NULL)
 358                         return false;
 359
 360                 return browser_select_entry(c, entry, TRUE);
 361         }
 362 }
 363
 364 static bool
 365 browser_handle_add(struct screen_browser *browser, struct mpdclient *c)
 366 {
 367         struct filelist_entry *entry;
 368
 369         if (browser->lw->range_selection) {
 370                 for (unsigned i = browser->lw->selected_start;
 371                          i <= browser->lw->selected_end; i++) {
 372                         entry = browser_get_index(browser, i);
 373
 374                         if (entry != NULL && entry->entity != NULL)
 375                                 browser_select_entry(c, entry, FALSE);
 376                 }
 377                 return false;
 378         } else {
 379                 entry = browser_get_selected_entry(browser);
 380
 381                 if (entry == NULL || entry->entity == NULL)
 382                         return false;
 383
 384                 return browser_select_entry(c, entry, FALSE);
 385         }
 386 }
 387
 388 static void
 389 browser_handle_select_all(struct screen_browser *browser, struct mpdclient *c)
 390 {
 391         guint i;
 392
 393         if (browser->filelist == NULL)
 394                 return;
 395
 396         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 397                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 398
 399                 if (entry != NULL && entry->entity != NULL)
 400                         browser_select_entry(c, entry, FALSE);
 401         }
 402 }
 403
 404 #ifdef HAVE_GETMOUSE
 405 static int
 406 browser_handle_mouse_event(struct screen_browser *browser, struct mpdclient *c)
 407 {
 408         int row;
 409         unsigned prev_selected = browser->lw->selected;
 410         unsigned long bstate;
 411         int length;
 412
 413         if (browser->filelist)
 414                 length = filelist_length(browser->filelist);
 415         else
 416                 length = 0;
 417
 418         if (screen_get_mouse_event(c, &bstate, &row) ||
 419             list_window_mouse(browser->lw, length, bstate, row))
 420                 return 1;
 421
 422         browser->lw->selected = browser->lw->start + row;
 423         list_window_check_selected(browser->lw, length);
 424
 425         if( bstate & BUTTON1_CLICKED ) {
 426                 if (prev_selected == browser->lw->selected)
 427                         browser_handle_enter(browser, c);
 428         } else if (bstate & BUTTON3_CLICKED) {
 429                 if (prev_selected == browser->lw->selected)
 430                         browser_handle_select(browser, c);
 431         }
 432
 433         return 1;
 434 }
 435 #endif
 436
 437 bool
 438 browser_cmd(struct screen_browser *browser,
 439             struct mpdclient *c, command_t cmd)
 440 {
 441         const struct mpd_song *song;
 442
 443         if (browser->filelist == NULL)
 444                 return false;
 445
 446         switch (cmd) {
 447         case CMD_PLAY:
 448                 browser_handle_enter(browser, c);
 449                 return true;
 450
 451         case CMD_SELECT:
 452                 if (browser_handle_select(browser, c))
 453                         /* continue and select next item... */
 454                         cmd = CMD_LIST_NEXT;
 455
 456                 /* call list_window_cmd to go to the next item */
 457                 break;
 458
 459         case CMD_ADD:
 460                 if (browser_handle_add(browser, c))
 461                         /* continue and select next item... */
 462                         cmd = CMD_LIST_NEXT;
 463
 464                 /* call list_window_cmd to go to the next item */
 465                 break;
 466
 467         case CMD_SELECT_ALL:
 468                 browser_handle_select_all(browser, c);
 469                 return true;
 470
 471         case CMD_LIST_FIND:
 472         case CMD_LIST_RFIND:
 473         case CMD_LIST_FIND_NEXT:
 474         case CMD_LIST_RFIND_NEXT:
 475                 screen_find(browser->lw, filelist_length(browser->filelist),
 476                             cmd, browser_lw_callback,
 477                             browser->filelist);
 478                 return true;
 479         case CMD_LIST_JUMP:
 480                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 481                 return true;
 482
 483 #ifdef HAVE_GETMOUSE
 484         case CMD_MOUSE_EVENT:
 485                 browser_handle_mouse_event(browser, c);
 486                 return true;
 487 #endif
 488
 489 #ifdef ENABLE_SONG_SCREEN
 490         case CMD_SCREEN_SONG:
 491                 song = browser_get_selected_song(browser);
 492                 if (song == NULL)
 493                         return false;
 494
 495                 screen_song_switch(c, song);
 496                 return true;
 497 #endif
 498
 499         case CMD_LOCATE:
 500                 song = browser_get_selected_song(browser);
 501                 if (song == NULL)
 502                         return false;
 503
 504                 screen_file_goto_song(c, song);
 505                 return true;
 506
 507 #ifdef ENABLE_LYRICS_SCREEN
 508         case CMD_SCREEN_LYRICS:
 509                 song = browser_get_selected_song(browser);
 510                 if (song == NULL)
 511                         return false;
 512
 513                 screen_lyrics_switch(c, song, false);
 514                 return true;
 515 #endif
 516         case CMD_SCREEN_SWAP:
 517                 screen_swap(c, browser_get_selected_song(browser));
 518                 return true;
 519
 520         default:
 521                 break;
 522         }
 523
 524         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 525                             cmd))
 526                 return true;
 527
 528         return false;
 529 }