src/screen_queue.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_queue.h"
  21 #include "screen_interface.h"
  22 #include "screen_file.h"
  23 #include "screen_message.h"
  24 #include "screen_find.h"
  25 #include "config.h"
  26 #include "i18n.h"
  27 #include "charset.h"
  28 #include "options.h"
  29 #include "mpdclient.h"
  30 #include "utils.h"
  31 #include "strfsong.h"
  32 #include "wreadln.h"
  33 #include "song_paint.h"
  34 #include "screen.h"
  35 #include "screen_utils.h"
  36 #include "screen_song.h"
  37 #include "screen_lyrics.h"
  38
  39 #ifndef NCMPC_MINI
  40 #include "hscroll.h"
  41 #endif
  42
  43 #include <mpd/client.h>
  44
  45 #include <ctype.h>
  46 #include <string.h>
  47 #include <glib.h>
  48
  49 #define MAX_SONG_LENGTH 512
  50
  51 #ifndef NCMPC_MINI
  52 typedef struct
  53 {
  54         GList **list;
  55         GList **dir_list;
  56         struct mpdclient *c;
  57 } completion_callback_data_t;
  58
  59 static struct hscroll hscroll;
  60 #endif
  61
  62 static struct mpdclient_playlist *playlist;
  63 static int current_song_id = -1;
  64 static int selected_song_id = -1;
  65 static struct list_window *lw;
  66 static guint timer_hide_cursor_id;
  67
  68 static void
  69 screen_queue_paint(void);
  70
  71 static void
  72 screen_queue_repaint(void)
  73 {
  74         screen_queue_paint();
  75         wrefresh(lw->w);
  76 }
  77
  78 static const struct mpd_song *
  79 screen_queue_selected_song(void)
  80 {
  81         return !lw->range_selection &&
  82                 lw->selected < playlist_length(playlist)
  83                 ? playlist_get(playlist, lw->selected)
  84                 : NULL;
  85 }
  86
  87 static void
  88 screen_queue_save_selection(void)
  89 {
  90         selected_song_id = screen_queue_selected_song() != NULL
  91                 ? (int)mpd_song_get_id(screen_queue_selected_song())
  92                 : -1;
  93 }
  94
  95 static void
  96 screen_queue_restore_selection(void)
  97 {
  98         const struct mpd_song *song;
  99         int pos;
 100
 101         list_window_set_length(lw, playlist_length(playlist));
 102
 103         if (selected_song_id < 0)
 104                 /* there was no selection */
 105                 return;
 106
 107         song = screen_queue_selected_song();
 108         if (song != NULL &&
 109             mpd_song_get_id(song) == (unsigned)selected_song_id)
 110                 /* selection is still valid */
 111                 return;
 112
 113         pos = playlist_get_index_from_id(playlist, selected_song_id);
 114         if (pos >= 0)
 115                 list_window_set_cursor(lw, pos);
 116
 117         screen_queue_save_selection();
 118 }
 119
 120 static const char *
 121 screen_queue_lw_callback(unsigned idx, G_GNUC_UNUSED void *data)
 122 {
 123         static char songname[MAX_SONG_LENGTH];
 124         struct mpd_song *song;
 125
 126         assert(playlist != NULL);
 127         assert(idx < playlist_length(playlist));
 128
 129         song = playlist_get(playlist, idx);
 130
 131         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 132
 133         return songname;
 134 }
 135
 136 static void
 137 center_playing_item(struct mpdclient *c, bool center_cursor)
 138 {
 139         unsigned length = c->playlist.list->len;
 140         int idx;
 141
 142         /* try to center the song that are playing */
 143         idx = playlist_get_index(&c->playlist, c->song);
 144         if (idx < 0)
 145                 return;
 146
 147         if (length < lw->rows)
 148         {
 149                 if (center_cursor)
 150                         list_window_set_cursor(lw, idx);
 151                 return;
 152         }
 153
 154         list_window_center(lw, idx);
 155
 156         if (center_cursor) {
 157                 list_window_set_cursor(lw, idx);
 158                 return;
 159         }
 160
 161         /* make sure the cursor is in the window */
 162         list_window_fetch_cursor(lw);
 163 }
 164
 165 #ifndef NCMPC_MINI
 166 static void
 167 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 168                        void *data)
 169 {
 170         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 171         GList **list = tmp->list;
 172         struct mpdclient *c = tmp->c;
 173
 174         if( *list == NULL ) {
 175                 /* create completion list */
 176                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 177                 g_completion_add_items(gcmp, *list);
 178         }
 179 }
 180
 181 static void
 182 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 183                         G_GNUC_UNUSED gchar *line, GList *items,
 184                         G_GNUC_UNUSED void *data)
 185 {
 186         if (g_list_length(items) >= 1)
 187                 screen_display_completion_list(items);
 188 }
 189 #endif
 190
 191 #ifndef NCMPC_MINI
 192 /**
 193  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 194  * g_completion_set_compare(), because strncmp() takes size_t where
 195  * g_completion_set_compare passes a gsize value.
 196  */
 197 static gint
 198 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 199 {
 200         return strncmp(s1, s2, n);
 201 }
 202 #endif
 203
 204 int
 205 playlist_save(struct mpdclient *c, char *name, char *defaultname)
 206 {
 207         struct mpd_connection *connection;
 208         gchar *filename, *filename_utf8;
 209 #ifndef NCMPC_MINI
 210         GCompletion *gcmp;
 211         GList *list = NULL;
 212         completion_callback_data_t data;
 213 #endif
 214
 215 #ifdef NCMPC_MINI
 216         (void)defaultname;
 217 #endif
 218
 219 #ifndef NCMPC_MINI
 220         if (name == NULL) {
 221                 /* initialize completion support */
 222                 gcmp = g_completion_new(NULL);
 223                 g_completion_set_compare(gcmp, completion_strncmp);
 224                 data.list = &list;
 225                 data.dir_list = NULL;
 226                 data.c = c;
 227                 wrln_completion_callback_data = &data;
 228                 wrln_pre_completion_callback = save_pre_completion_cb;
 229                 wrln_post_completion_callback = save_post_completion_cb;
 230
 231
 232                 /* query the user for a filename */
 233                 filename = screen_readln(_("Save playlist as"),
 234                                          defaultname,
 235                                          NULL,
 236                                          gcmp);
 237
 238                 /* destroy completion support */
 239                 wrln_completion_callback_data = NULL;
 240                 wrln_pre_completion_callback = NULL;
 241                 wrln_post_completion_callback = NULL;
 242                 g_completion_free(gcmp);
 243                 list = string_list_free(list);
 244                 if( filename )
 245                         filename=g_strstrip(filename);
 246         } else
 247 #endif
 248                         filename=g_strdup(name);
 249
 250         if (filename == NULL)
 251                 return -1;
 252
 253         /* send save command to mpd */
 254
 255         connection = mpdclient_get_connection(c);
 256         if (connection == NULL)
 257                 return -1;
 258
 259         filename_utf8 = locale_to_utf8(filename);
 260         if (!mpd_run_save(connection, filename_utf8)) {
 261                 if (mpd_connection_get_error(connection) == MPD_ERROR_SERVER &&
 262                     mpd_connection_get_server_error(connection) == MPD_SERVER_ERROR_EXIST &&
 263                     mpd_connection_clear_error(connection)) {
 264                         char *buf;
 265                         int key;
 266
 267                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 268                                               filename, YES, NO);
 269                         key = tolower(screen_getch(buf));
 270                         g_free(buf);
 271
 272                         if (key != YES[0]) {
 273                                 g_free(filename_utf8);
 274                                 g_free(filename);
 275                                 screen_status_printf(_("Aborted"));
 276                                 return -1;
 277                         }
 278
 279                         if (!mpd_run_rm(connection, filename_utf8) ||
 280                             !mpd_run_save(connection, filename_utf8)) {
 281                                 mpdclient_handle_error(c);
 282                                 g_free(filename_utf8);
 283                                 g_free(filename);
 284                                 return -1;
 285                         }
 286                 } else {
 287                         mpdclient_handle_error(c);
 288                         g_free(filename_utf8);
 289                         g_free(filename);
 290                         return -1;
 291                 }
 292         }
 293
 294         c->events |= MPD_IDLE_STORED_PLAYLIST;
 295
 296         g_free(filename_utf8);
 297
 298         /* success */
 299         screen_status_printf(_("Saved %s"), filename);
 300         g_free(filename);
 301         return 0;
 302 }
 303
 304 #ifndef NCMPC_MINI
 305 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 306                     GList **list, struct mpdclient *c)
 307 {
 308         g_completion_remove_items(gcmp, *list);
 309         *list = string_list_remove(*list, dir);
 310         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 311         g_completion_add_items(gcmp, *list);
 312         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 313 }
 314
 315 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 316 {
 317         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 318         GList **dir_list = tmp->dir_list;
 319         GList **list = tmp->list;
 320         struct mpdclient *c = tmp->c;
 321
 322         if (*list == NULL) {
 323                 /* create initial list */
 324                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 325                 g_completion_add_items(gcmp, *list);
 326         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 327                    string_list_find(*dir_list, line) == NULL) {
 328                 /* add directory content to list */
 329                 add_dir(gcmp, line, dir_list, list, c);
 330         }
 331 }
 332
 333 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 334                                    GList *items, void *data)
 335 {
 336         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 337         GList **dir_list = tmp->dir_list;
 338         GList **list = tmp->list;
 339         struct mpdclient *c = tmp->c;
 340
 341         if (g_list_length(items) >= 1)
 342                 screen_display_completion_list(items);
 343
 344         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 345             string_list_find(*dir_list, line) == NULL) {
 346                 /* add directory content to list */
 347                 add_dir(gcmp, line, dir_list, list, c);
 348         }
 349 }
 350 #endif
 351
 352 static int
 353 handle_add_to_playlist(struct mpdclient *c)
 354 {
 355         gchar *path;
 356 #ifndef NCMPC_MINI
 357         GCompletion *gcmp;
 358         GList *list = NULL;
 359         GList *dir_list = NULL;
 360         completion_callback_data_t data;
 361
 362         /* initialize completion support */
 363         gcmp = g_completion_new(NULL);
 364         g_completion_set_compare(gcmp, completion_strncmp);
 365         data.list = &list;
 366         data.dir_list = &dir_list;
 367         data.c = c;
 368         wrln_completion_callback_data = &data;
 369         wrln_pre_completion_callback = add_pre_completion_cb;
 370         wrln_post_completion_callback = add_post_completion_cb;
 371 #endif
 372
 373         /* get path */
 374         path = screen_readln(_("Add"),
 375                              NULL,
 376                              NULL,
 377 #ifdef NCMPC_MINI
 378                              NULL
 379 #else
 380                              gcmp
 381 #endif
 382                              );
 383
 384         /* destroy completion data */
 385 #ifndef NCMPC_MINI
 386         wrln_completion_callback_data = NULL;
 387         wrln_pre_completion_callback = NULL;
 388         wrln_post_completion_callback = NULL;
 389         g_completion_free(gcmp);
 390         string_list_free(list);
 391         string_list_free(dir_list);
 392 #endif
 393
 394         /* add the path to the playlist */
 395         if (path != NULL) {
 396                 char *path_utf8 = locale_to_utf8(path);
 397                 mpdclient_cmd_add_path(c, path_utf8);
 398                 g_free(path_utf8);
 399         }
 400
 401         g_free(path);
 402         return 0;
 403 }
 404
 405 static void
 406 screen_queue_init(WINDOW *w, int cols, int rows)
 407 {
 408         lw = list_window_init(w, cols, rows);
 409
 410 #ifndef NCMPC_MINI
 411         if (options.scroll)
 412                 hscroll_init(&hscroll, w, options.scroll_sep);
 413 #endif
 414 }
 415
 416 static gboolean
 417 timer_hide_cursor(gpointer data)
 418 {
 419         struct mpdclient *c = data;
 420
 421         assert(options.hide_cursor > 0);
 422         assert(timer_hide_cursor_id != 0);
 423
 424         timer_hide_cursor_id = 0;
 425
 426         /* hide the cursor when mpd is playing and the user is inactive */
 427
 428         if (c->status != NULL &&
 429             mpd_status_get_state(c->status) == MPD_STATE_PLAY) {
 430                 lw->hide_cursor = true;
 431                 screen_queue_repaint();
 432         } else
 433                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 434                                                      timer_hide_cursor, c);
 435
 436         return FALSE;
 437 }
 438
 439 static void
 440 screen_queue_open(struct mpdclient *c)
 441 {
 442         playlist = &c->playlist;
 443
 444         assert(timer_hide_cursor_id == 0);
 445         if (options.hide_cursor > 0) {
 446                 lw->hide_cursor = false;
 447                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 448                                                      timer_hide_cursor, c);
 449         }
 450
 451         screen_queue_restore_selection();
 452 }
 453
 454 static void
 455 screen_queue_close(void)
 456 {
 457         if (timer_hide_cursor_id != 0) {
 458                 g_source_remove(timer_hide_cursor_id);
 459                 timer_hide_cursor_id = 0;
 460         }
 461
 462 #ifndef NCMPC_MINI
 463         if (options.scroll)
 464                 hscroll_clear(&hscroll);
 465 #endif
 466 }
 467
 468 static void
 469 screen_queue_resize(int cols, int rows)
 470 {
 471         list_window_resize(lw, cols, rows);
 472 }
 473
 474
 475 static void
 476 screen_queue_exit(void)
 477 {
 478         list_window_free(lw);
 479 }
 480
 481 static const char *
 482 screen_queue_title(char *str, size_t size)
 483 {
 484         if (options.host == NULL)
 485                 return _("Playlist");
 486
 487         g_snprintf(str, size, _("Playlist on %s"), options.host);
 488         return str;
 489 }
 490
 491 static void
 492 screen_queue_paint_callback(WINDOW *w, unsigned i,
 493                             unsigned y, unsigned width,
 494                             bool selected, G_GNUC_UNUSED void *data)
 495 {
 496         const struct mpd_song *song;
 497         struct hscroll *row_hscroll;
 498
 499         assert(playlist != NULL);
 500         assert(i < playlist_length(playlist));
 501
 502         song = playlist_get(playlist, i);
 503
 504 #ifdef NCMPC_MINI
 505         row_hscroll = NULL;
 506 #else
 507         row_hscroll = selected && options.scroll && lw->selected == i
 508                 ? &hscroll : NULL;
 509 #endif
 510
 511         paint_song_row(w, y, width, selected,
 512                        (int)mpd_song_get_id(song) == current_song_id,
 513                        song, row_hscroll);
 514 }
 515
 516 static void
 517 screen_queue_paint(void)
 518 {
 519 #ifndef NCMPC_MINI
 520         if (options.scroll)
 521                 hscroll_clear(&hscroll);
 522 #endif
 523
 524         list_window_paint2(lw, screen_queue_paint_callback, NULL);
 525 }
 526
 527 G_GNUC_PURE
 528 static int
 529 get_current_song_id(const struct mpd_status *status)
 530 {
 531         return status != NULL &&
 532                 (mpd_status_get_state(status) == MPD_STATE_PLAY ||
 533                  mpd_status_get_state(status) == MPD_STATE_PAUSE)
 534                 ? (int)mpd_status_get_song_id(status)
 535                 : -1;
 536 }
 537
 538 static void
 539 screen_queue_update(struct mpdclient *c)
 540 {
 541         if (c->events & MPD_IDLE_PLAYLIST)
 542                 screen_queue_restore_selection();
 543
 544         if ((c->events & MPD_IDLE_PLAYER) != 0 &&
 545             get_current_song_id(c->status) != current_song_id) {
 546                 current_song_id = get_current_song_id(c->status);
 547
 548                 /* center the cursor */
 549                 if (options.auto_center && current_song_id != -1 && ! lw->range_selection)
 550                         center_playing_item(c, false);
 551
 552                 screen_queue_repaint();
 553         } else if (c->events & MPD_IDLE_PLAYLIST) {
 554                 /* the playlist has changed, we must paint the new
 555                    version */
 556                 screen_queue_repaint();
 557         }
 558 }
 559
 560 #ifdef HAVE_GETMOUSE
 561 static bool
 562 handle_mouse_event(struct mpdclient *c)
 563 {
 564         int row;
 565         unsigned long bstate;
 566         unsigned old_selected;
 567
 568         if (screen_get_mouse_event(c, &bstate, &row) ||
 569             list_window_mouse(lw, bstate, row)) {
 570                 screen_queue_repaint();
 571                 return true;
 572         }
 573
 574         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 575                 /* stop */
 576                 screen_cmd(c, CMD_STOP);
 577                 return true;
 578         }
 579
 580         old_selected = lw->selected;
 581         list_window_set_cursor(lw, lw->start + row);
 582
 583         if (bstate & BUTTON1_CLICKED) {
 584                 /* play */
 585                 const struct mpd_song *song = screen_queue_selected_song();
 586                 if (song != NULL) {
 587                         struct mpd_connection *connection =
 588                                 mpdclient_get_connection(c);
 589
 590                         if (connection != NULL &&
 591                             !mpd_run_play_id(connection,
 592                                              mpd_song_get_id(song)))
 593                                 mpdclient_handle_error(c);
 594                 }
 595         } else if (bstate & BUTTON3_CLICKED) {
 596                 /* delete */
 597                 if (lw->selected == old_selected)
 598                         mpdclient_cmd_delete(c, lw->selected);
 599
 600                 list_window_set_length(lw, playlist_length(playlist));
 601         }
 602
 603         screen_queue_save_selection();
 604         screen_queue_repaint();
 605
 606         return true;
 607 }
 608 #endif
 609
 610 static bool
 611 screen_queue_cmd(struct mpdclient *c, command_t cmd)
 612 {
 613         struct mpd_connection *connection;
 614         static command_t cached_cmd = CMD_NONE;
 615         command_t prev_cmd = cached_cmd;
 616         struct list_window_range range;
 617         const struct mpd_song *song;
 618
 619         cached_cmd = cmd;
 620
 621         lw->hide_cursor = false;
 622
 623         if (options.hide_cursor > 0) {
 624                 if (timer_hide_cursor_id != 0)
 625                         g_source_remove(timer_hide_cursor_id);
 626                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 627                                                      timer_hide_cursor, c);
 628         }
 629
 630         if (list_window_cmd(lw, cmd)) {
 631                 screen_queue_save_selection();
 632                 screen_queue_repaint();
 633                 return true;
 634         }
 635
 636         switch(cmd) {
 637         case CMD_SCREEN_UPDATE:
 638                 center_playing_item(c, prev_cmd == CMD_SCREEN_UPDATE);
 639                 screen_queue_repaint();
 640                 return false;
 641         case CMD_SELECT_PLAYING:
 642                 list_window_set_cursor(lw, playlist_get_index(&c->playlist,
 643                                                               c->song));
 644                 screen_queue_save_selection();
 645                 screen_queue_repaint();
 646                 return true;
 647
 648         case CMD_LIST_FIND:
 649         case CMD_LIST_RFIND:
 650         case CMD_LIST_FIND_NEXT:
 651         case CMD_LIST_RFIND_NEXT:
 652                 screen_find(lw, cmd, screen_queue_lw_callback, NULL);
 653                 screen_queue_save_selection();
 654                 screen_queue_repaint();
 655                 return true;
 656         case CMD_LIST_JUMP:
 657                 screen_jump(lw, screen_queue_lw_callback, NULL, NULL);
 658                 screen_queue_save_selection();
 659                 screen_queue_repaint();
 660                 return true;
 661
 662 #ifdef HAVE_GETMOUSE
 663         case CMD_MOUSE_EVENT:
 664                 return handle_mouse_event(c);
 665 #endif
 666
 667 #ifdef ENABLE_SONG_SCREEN
 668         case CMD_SCREEN_SONG:
 669                 if (screen_queue_selected_song() != NULL) {
 670                         screen_song_switch(c, screen_queue_selected_song());
 671                         return true;
 672                 }
 673
 674                 break;
 675 #endif
 676
 677 #ifdef ENABLE_LYRICS_SCREEN
 678         case CMD_SCREEN_LYRICS:
 679                 if (lw->selected < playlist_length(&c->playlist)) {
 680                         struct mpd_song *selected = playlist_get(&c->playlist, lw->selected);
 681                         bool follow = false;
 682
 683                         if (c->song && selected &&
 684                             !strcmp(mpd_song_get_uri(selected),
 685                                     mpd_song_get_uri(c->song)))
 686                                 follow = true;
 687
 688                         screen_lyrics_switch(c, selected, follow);
 689                         return true;
 690                 }
 691
 692                 break;
 693 #endif
 694         case CMD_SCREEN_SWAP:
 695                 screen_swap(c, playlist_get(&c->playlist, lw->selected));
 696                 return true;
 697
 698         default:
 699                 break;
 700         }
 701
 702         if (!mpdclient_is_connected(c))
 703                 return false;
 704
 705         switch(cmd) {
 706         case CMD_PLAY:
 707                 song = screen_queue_selected_song();
 708                 if (song == NULL)
 709                         return false;
 710
 711                 connection = mpdclient_get_connection(c);
 712                 if (connection != NULL &&
 713                     !mpd_run_play_id(connection, mpd_song_get_id(song)))
 714                         mpdclient_handle_error(c);
 715
 716                 return true;
 717
 718         case CMD_DELETE:
 719                 list_window_get_range(lw, &range);
 720                 mpdclient_cmd_delete_range(c, range.start, range.end);
 721
 722                 list_window_set_cursor(lw, range.start);
 723                 return true;
 724
 725         case CMD_SAVE_PLAYLIST:
 726                 playlist_save(c, NULL, NULL);
 727                 return true;
 728
 729         case CMD_ADD:
 730                 handle_add_to_playlist(c);
 731                 return true;
 732
 733         case CMD_SHUFFLE:
 734                 list_window_get_range(lw, &range);
 735                 if (range.end < range.start + 1)
 736                         /* No range selection, shuffle all list. */
 737                         break;
 738
 739                 connection = mpdclient_get_connection(c);
 740                 if (connection == NULL)
 741                         return true;
 742
 743                 if (mpd_run_shuffle_range(connection, range.start, range.end))
 744                         screen_status_message(_("Shuffled playlist"));
 745                 else
 746                         mpdclient_handle_error(c);
 747                 return true;
 748
 749         case CMD_LIST_MOVE_UP:
 750                 list_window_get_range(lw, &range);
 751                 if (range.start == 0 || range.end <= range.start)
 752                         return false;
 753
 754                 if (!mpdclient_cmd_move(c, range.end - 1, range.start - 1))
 755                         return true;
 756
 757                 lw->selected--;
 758                 lw->range_base--;
 759
 760                 screen_queue_save_selection();
 761                 return true;
 762
 763         case CMD_LIST_MOVE_DOWN:
 764                 list_window_get_range(lw, &range);
 765                 if (range.end >= playlist_length(&c->playlist))
 766                         return false;
 767
 768                 if (!mpdclient_cmd_move(c, range.start, range.end))
 769                         return true;
 770
 771                 lw->selected++;
 772                 lw->range_base++;
 773
 774                 screen_queue_save_selection();
 775                 return true;
 776
 777         case CMD_LOCATE:
 778                 if (screen_queue_selected_song() != NULL) {
 779                         screen_file_goto_song(c, screen_queue_selected_song());
 780                         return true;
 781                 }
 782
 783                 break;
 784
 785         default:
 786                 break;
 787         }
 788
 789         return false;
 790 }
 791
 792 const struct screen_functions screen_queue = {
 793         .init = screen_queue_init,
 794         .exit = screen_queue_exit,
 795         .open = screen_queue_open,
 796         .close = screen_queue_close,
 797         .resize = screen_queue_resize,
 798         .paint = screen_queue_paint,
 799         .update = screen_queue_update,
 800         .cmd = screen_queue_cmd,
 801         .get_title = screen_queue_title,
 802 };