src/screen_queue.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2017 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_status.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 #include "Compiler.h"
  39
  40 #ifndef NCMPC_MINI
  41 #include "hscroll.h"
  42 #endif
  43
  44 #include <mpd/client.h>
  45
  46 #include <ctype.h>
  47 #include <string.h>
  48 #include <glib.h>
  49
  50 #define MAX_SONG_LENGTH 512
  51
  52 #ifndef NCMPC_MINI
  53 typedef struct
  54 {
  55         GList **list;
  56         GList **dir_list;
  57         struct mpdclient *c;
  58 } completion_callback_data_t;
  59
  60 static struct hscroll hscroll;
  61 #endif
  62
  63 static struct mpdclient_playlist *playlist;
  64 static int current_song_id = -1;
  65 static int selected_song_id = -1;
  66 static struct list_window *lw;
  67 static guint timer_hide_cursor_id;
  68
  69 static void
  70 screen_queue_paint(void);
  71
  72 static void
  73 screen_queue_repaint(void)
  74 {
  75         screen_queue_paint();
  76         wrefresh(lw->w);
  77 }
  78
  79 static const struct mpd_song *
  80 screen_queue_selected_song(void)
  81 {
  82         return !lw->range_selection &&
  83                 lw->selected < playlist_length(playlist)
  84                 ? playlist_get(playlist, lw->selected)
  85                 : NULL;
  86 }
  87
  88 static void
  89 screen_queue_save_selection(void)
  90 {
  91         selected_song_id = screen_queue_selected_song() != NULL
  92                 ? (int)mpd_song_get_id(screen_queue_selected_song())
  93                 : -1;
  94 }
  95
  96 static void
  97 screen_queue_restore_selection(void)
  98 {
  99         list_window_set_length(lw, playlist_length(playlist));
 100
 101         if (selected_song_id < 0)
 102                 /* there was no selection */
 103                 return;
 104
 105         const struct mpd_song *song = screen_queue_selected_song();
 106         if (song != NULL &&
 107             mpd_song_get_id(song) == (unsigned)selected_song_id)
 108                 /* selection is still valid */
 109                 return;
 110
 111         int pos = playlist_get_index_from_id(playlist, selected_song_id);
 112         if (pos >= 0)
 113                 list_window_set_cursor(lw, pos);
 114
 115         screen_queue_save_selection();
 116 }
 117
 118 static const char *
 119 screen_queue_lw_callback(unsigned idx, gcc_unused void *data)
 120 {
 121         static char songname[MAX_SONG_LENGTH];
 122
 123         assert(playlist != NULL);
 124         assert(idx < playlist_length(playlist));
 125
 126         struct mpd_song *song = playlist_get(playlist, idx);
 127
 128         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 129
 130         return songname;
 131 }
 132
 133 static void
 134 center_playing_item(const struct mpd_status *status, bool center_cursor)
 135 {
 136         if (status == NULL ||
 137             (mpd_status_get_state(status) != MPD_STATE_PLAY &&
 138              mpd_status_get_state(status) != MPD_STATE_PAUSE))
 139                 return;
 140
 141         /* try to center the song that are playing */
 142         int idx = mpd_status_get_song_pos(status);
 143         if (idx < 0)
 144                 return;
 145
 146         list_window_center(lw, idx);
 147
 148         if (center_cursor) {
 149                 list_window_set_cursor(lw, idx);
 150                 return;
 151         }
 152
 153         /* make sure the cursor is in the window */
 154         list_window_fetch_cursor(lw);
 155 }
 156
 157 gcc_pure
 158 static int
 159 get_current_song_id(const struct mpd_status *status)
 160 {
 161         return status != NULL &&
 162                 (mpd_status_get_state(status) == MPD_STATE_PLAY ||
 163                  mpd_status_get_state(status) == MPD_STATE_PAUSE)
 164                 ? (int)mpd_status_get_song_id(status)
 165                 : -1;
 166 }
 167
 168 static bool
 169 screen_queue_song_change(const struct mpd_status *status)
 170 {
 171         if (get_current_song_id(status) == current_song_id)
 172                 return false;
 173
 174         current_song_id = get_current_song_id(status);
 175
 176         /* center the cursor */
 177         if (options.auto_center && !lw->range_selection)
 178                 center_playing_item(status, false);
 179
 180         return true;
 181 }
 182
 183 #ifndef NCMPC_MINI
 184 static void
 185 save_pre_completion_cb(GCompletion *gcmp, gcc_unused gchar *line,
 186                        void *data)
 187 {
 188         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 189         GList **list = tmp->list;
 190         struct mpdclient *c = tmp->c;
 191
 192         if( *list == NULL ) {
 193                 /* create completion list */
 194                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 195                 g_completion_add_items(gcmp, *list);
 196         }
 197 }
 198
 199 static void
 200 save_post_completion_cb(gcc_unused GCompletion *gcmp,
 201                         gcc_unused gchar *line, GList *items,
 202                         gcc_unused void *data)
 203 {
 204         if (g_list_length(items) >= 1)
 205                 screen_display_completion_list(items);
 206 }
 207 #endif
 208
 209 #ifndef NCMPC_MINI
 210 /**
 211  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 212  * g_completion_set_compare(), because strncmp() takes size_t where
 213  * g_completion_set_compare passes a gsize value.
 214  */
 215 static gint
 216 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 217 {
 218         return strncmp(s1, s2, n);
 219 }
 220 #endif
 221
 222 int
 223 playlist_save(struct mpdclient *c, char *name, char *defaultname)
 224 {
 225         struct mpd_connection *connection;
 226         gchar *filename;
 227
 228 #ifdef NCMPC_MINI
 229         (void)defaultname;
 230 #endif
 231
 232 #ifndef NCMPC_MINI
 233         if (name == NULL) {
 234                 /* initialize completion support */
 235                 GCompletion *gcmp = g_completion_new(NULL);
 236                 g_completion_set_compare(gcmp, completion_strncmp);
 237                 GList *list = NULL;
 238                 completion_callback_data_t data = {
 239                         .list = &list,
 240                         .dir_list = NULL,
 241                         .c = c,
 242                 };
 243                 wrln_completion_callback_data = &data;
 244                 wrln_pre_completion_callback = save_pre_completion_cb;
 245                 wrln_post_completion_callback = save_post_completion_cb;
 246
 247
 248                 /* query the user for a filename */
 249                 filename = screen_readln(_("Save queue as"),
 250                                          defaultname,
 251                                          NULL,
 252                                          gcmp);
 253
 254                 /* destroy completion support */
 255                 wrln_completion_callback_data = NULL;
 256                 wrln_pre_completion_callback = NULL;
 257                 wrln_post_completion_callback = NULL;
 258                 g_completion_free(gcmp);
 259                 list = string_list_free(list);
 260                 if( filename )
 261                         filename=g_strstrip(filename);
 262         } else
 263 #endif
 264                 filename=g_strdup(name);
 265
 266         if (filename == NULL)
 267                 return -1;
 268
 269         /* send save command to mpd */
 270
 271         connection = mpdclient_get_connection(c);
 272         if (connection == NULL) {
 273                 g_free(filename);
 274                 return -1;
 275         }
 276
 277         char *filename_utf8 = locale_to_utf8(filename);
 278         if (!mpd_run_save(connection, filename_utf8)) {
 279                 if (mpd_connection_get_error(connection) == MPD_ERROR_SERVER &&
 280                     mpd_connection_get_server_error(connection) == MPD_SERVER_ERROR_EXIST &&
 281                     mpd_connection_clear_error(connection)) {
 282                         char *buf = g_strdup_printf(_("Replace %s?"), filename);
 283                         bool replace = screen_get_yesno(buf, false);
 284                         g_free(buf);
 285
 286                         if (!replace) {
 287                                 g_free(filename_utf8);
 288                                 g_free(filename);
 289                                 screen_status_printf(_("Aborted"));
 290                                 return -1;
 291                         }
 292
 293                         if (!mpd_run_rm(connection, filename_utf8) ||
 294                             !mpd_run_save(connection, filename_utf8)) {
 295                                 mpdclient_handle_error(c);
 296                                 g_free(filename_utf8);
 297                                 g_free(filename);
 298                                 return -1;
 299                         }
 300                 } else {
 301                         mpdclient_handle_error(c);
 302                         g_free(filename_utf8);
 303                         g_free(filename);
 304                         return -1;
 305                 }
 306         }
 307
 308         c->events |= MPD_IDLE_STORED_PLAYLIST;
 309
 310         g_free(filename_utf8);
 311
 312         /* success */
 313         screen_status_printf(_("Saved %s"), filename);
 314         g_free(filename);
 315         return 0;
 316 }
 317
 318 #ifndef NCMPC_MINI
 319 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 320                     GList **list, struct mpdclient *c)
 321 {
 322         g_completion_remove_items(gcmp, *list);
 323         *list = string_list_remove(*list, dir);
 324         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 325         g_completion_add_items(gcmp, *list);
 326         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 327 }
 328
 329 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 330 {
 331         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 332         GList **dir_list = tmp->dir_list;
 333         GList **list = tmp->list;
 334         struct mpdclient *c = tmp->c;
 335
 336         if (*list == NULL) {
 337                 /* create initial list */
 338                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 339                 g_completion_add_items(gcmp, *list);
 340         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 341                    string_list_find(*dir_list, line) == NULL) {
 342                 /* add directory content to list */
 343                 add_dir(gcmp, line, dir_list, list, c);
 344         }
 345 }
 346
 347 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 348                                    GList *items, void *data)
 349 {
 350         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 351         GList **dir_list = tmp->dir_list;
 352         GList **list = tmp->list;
 353         struct mpdclient *c = tmp->c;
 354
 355         if (g_list_length(items) >= 1)
 356                 screen_display_completion_list(items);
 357
 358         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 359             string_list_find(*dir_list, line) == NULL) {
 360                 /* add directory content to list */
 361                 add_dir(gcmp, line, dir_list, list, c);
 362         }
 363 }
 364 #endif
 365
 366 static int
 367 handle_add_to_playlist(struct mpdclient *c)
 368 {
 369 #ifndef NCMPC_MINI
 370         /* initialize completion support */
 371         GCompletion *gcmp = g_completion_new(NULL);
 372         g_completion_set_compare(gcmp, completion_strncmp);
 373
 374         GList *list = NULL;
 375         GList *dir_list = NULL;
 376         completion_callback_data_t data = {
 377                 .list = &list,
 378                 .dir_list = &dir_list,
 379                 .c = c,
 380         };
 381
 382         wrln_completion_callback_data = &data;
 383         wrln_pre_completion_callback = add_pre_completion_cb;
 384         wrln_post_completion_callback = add_post_completion_cb;
 385 #else
 386         GCompletion *gcmp = NULL;
 387 #endif
 388
 389         /* get path */
 390         char *path = screen_readln(_("Add"),
 391                                    NULL,
 392                                    NULL,
 393                                    gcmp);
 394
 395         /* destroy completion data */
 396 #ifndef NCMPC_MINI
 397         wrln_completion_callback_data = NULL;
 398         wrln_pre_completion_callback = NULL;
 399         wrln_post_completion_callback = NULL;
 400         g_completion_free(gcmp);
 401         string_list_free(list);
 402         string_list_free(dir_list);
 403 #endif
 404
 405         /* add the path to the playlist */
 406         if (path != NULL) {
 407                 char *path_utf8 = locale_to_utf8(path);
 408                 mpdclient_cmd_add_path(c, path_utf8);
 409                 g_free(path_utf8);
 410         }
 411
 412         g_free(path);
 413         return 0;
 414 }
 415
 416 static void
 417 screen_queue_init(WINDOW *w, unsigned cols, unsigned rows)
 418 {
 419         lw = list_window_init(w, cols, rows);
 420
 421 #ifndef NCMPC_MINI
 422         if (options.scroll)
 423                 hscroll_init(&hscroll, w, options.scroll_sep);
 424 #endif
 425 }
 426
 427 static gboolean
 428 timer_hide_cursor(gpointer data)
 429 {
 430         struct mpdclient *c = data;
 431
 432         assert(options.hide_cursor > 0);
 433         assert(timer_hide_cursor_id != 0);
 434
 435         timer_hide_cursor_id = 0;
 436
 437         /* hide the cursor when mpd is playing and the user is inactive */
 438
 439         if (c->status != NULL &&
 440             mpd_status_get_state(c->status) == MPD_STATE_PLAY) {
 441                 lw->hide_cursor = true;
 442                 screen_queue_repaint();
 443         } else
 444                 timer_hide_cursor_id = g_timeout_add_seconds(options.hide_cursor,
 445                                                              timer_hide_cursor, c);
 446
 447         return FALSE;
 448 }
 449
 450 static void
 451 screen_queue_open(struct mpdclient *c)
 452 {
 453         playlist = &c->playlist;
 454
 455         assert(timer_hide_cursor_id == 0);
 456         if (options.hide_cursor > 0) {
 457                 lw->hide_cursor = false;
 458                 timer_hide_cursor_id = g_timeout_add_seconds(options.hide_cursor,
 459                                                              timer_hide_cursor, c);
 460         }
 461
 462         screen_queue_restore_selection();
 463         screen_queue_song_change(c->status);
 464 }
 465
 466 static void
 467 screen_queue_close(void)
 468 {
 469         if (timer_hide_cursor_id != 0) {
 470                 g_source_remove(timer_hide_cursor_id);
 471                 timer_hide_cursor_id = 0;
 472         }
 473
 474 #ifndef NCMPC_MINI
 475         if (options.scroll)
 476                 hscroll_clear(&hscroll);
 477 #endif
 478 }
 479
 480 static void
 481 screen_queue_resize(unsigned cols, unsigned rows)
 482 {
 483         list_window_resize(lw, cols, rows);
 484 }
 485
 486
 487 static void
 488 screen_queue_exit(void)
 489 {
 490         list_window_free(lw);
 491 }
 492
 493 static const char *
 494 screen_queue_title(char *str, size_t size)
 495 {
 496         if (options.host == NULL)
 497                 return _("Queue");
 498
 499         g_snprintf(str, size, _("Queue on %s"), options.host);
 500         return str;
 501 }
 502
 503 static void
 504 screen_queue_paint_callback(WINDOW *w, unsigned i,
 505                             unsigned y, unsigned width,
 506                             bool selected, gcc_unused const void *data)
 507 {
 508         assert(playlist != NULL);
 509         assert(i < playlist_length(playlist));
 510
 511         const struct mpd_song *song = playlist_get(playlist, i);
 512
 513         struct hscroll *row_hscroll = NULL;
 514 #ifndef NCMPC_MINI
 515         row_hscroll = selected && options.scroll && lw->selected == i
 516                 ? &hscroll : NULL;
 517 #endif
 518
 519         paint_song_row(w, y, width, selected,
 520                        (int)mpd_song_get_id(song) == current_song_id,
 521                        song, row_hscroll, options.list_format);
 522 }
 523
 524 static void
 525 screen_queue_paint(void)
 526 {
 527 #ifndef NCMPC_MINI
 528         if (options.scroll)
 529                 hscroll_clear(&hscroll);
 530 #endif
 531
 532         list_window_paint2(lw, screen_queue_paint_callback, NULL);
 533 }
 534
 535 static void
 536 screen_queue_update(struct mpdclient *c)
 537 {
 538         if (c->events & MPD_IDLE_QUEUE)
 539                 screen_queue_restore_selection();
 540         else
 541                 /* the queue size may have changed, even if we havn't
 542                    received the QUEUE idle event yet */
 543                 list_window_set_length(lw, playlist_length(playlist));
 544
 545         if (((c->events & MPD_IDLE_PLAYER) != 0 &&
 546              screen_queue_song_change(c->status)) ||
 547             c->events & MPD_IDLE_QUEUE)
 548                 /* the queue or the current song has changed, we must
 549                    paint the new version */
 550                 screen_queue_paint();
 551 }
 552
 553 #ifdef HAVE_GETMOUSE
 554 static bool
 555 handle_mouse_event(struct mpdclient *c)
 556 {
 557         unsigned long bstate;
 558         int row;
 559         if (screen_get_mouse_event(c, &bstate, &row) ||
 560             list_window_mouse(lw, bstate, row)) {
 561                 screen_queue_paint();
 562                 return true;
 563         }
 564
 565         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 566                 /* stop */
 567                 screen_cmd(c, CMD_STOP);
 568                 return true;
 569         }
 570
 571         const unsigned old_selected = lw->selected;
 572         list_window_set_cursor(lw, lw->start + row);
 573
 574         if (bstate & BUTTON1_CLICKED) {
 575                 /* play */
 576                 const struct mpd_song *song = screen_queue_selected_song();
 577                 if (song != NULL) {
 578                         struct mpd_connection *connection =
 579                                 mpdclient_get_connection(c);
 580
 581                         if (connection != NULL &&
 582                             !mpd_run_play_id(connection,
 583                                              mpd_song_get_id(song)))
 584                                 mpdclient_handle_error(c);
 585                 }
 586         } else if (bstate & BUTTON3_CLICKED) {
 587                 /* delete */
 588                 if (lw->selected == old_selected)
 589                         mpdclient_cmd_delete(c, lw->selected);
 590
 591                 list_window_set_length(lw, playlist_length(playlist));
 592         }
 593
 594         screen_queue_save_selection();
 595         screen_queue_paint();
 596
 597         return true;
 598 }
 599 #endif
 600
 601 static bool
 602 screen_queue_cmd(struct mpdclient *c, command_t cmd)
 603 {
 604         struct mpd_connection *connection;
 605         static command_t cached_cmd = CMD_NONE;
 606
 607         const command_t prev_cmd = cached_cmd;
 608         cached_cmd = cmd;
 609
 610         lw->hide_cursor = false;
 611
 612         if (options.hide_cursor > 0) {
 613                 if (timer_hide_cursor_id != 0)
 614                         g_source_remove(timer_hide_cursor_id);
 615                 timer_hide_cursor_id = g_timeout_add_seconds(options.hide_cursor,
 616                                                              timer_hide_cursor, c);
 617         }
 618
 619         if (list_window_cmd(lw, cmd)) {
 620                 screen_queue_save_selection();
 621                 screen_queue_paint();
 622                 return true;
 623         }
 624
 625         switch(cmd) {
 626         case CMD_SCREEN_UPDATE:
 627                 center_playing_item(c->status, prev_cmd == CMD_SCREEN_UPDATE);
 628                 screen_queue_paint();
 629                 return false;
 630         case CMD_SELECT_PLAYING:
 631                 list_window_set_cursor(lw, playlist_get_index(&c->playlist,
 632                                                               c->song));
 633                 screen_queue_save_selection();
 634                 screen_queue_paint();
 635                 return true;
 636
 637         case CMD_LIST_FIND:
 638         case CMD_LIST_RFIND:
 639         case CMD_LIST_FIND_NEXT:
 640         case CMD_LIST_RFIND_NEXT:
 641                 screen_find(lw, cmd, screen_queue_lw_callback, NULL);
 642                 screen_queue_save_selection();
 643                 screen_queue_paint();
 644                 return true;
 645         case CMD_LIST_JUMP:
 646                 screen_jump(lw, screen_queue_lw_callback, NULL, NULL, NULL);
 647                 screen_queue_save_selection();
 648                 screen_queue_paint();
 649                 return true;
 650
 651 #ifdef HAVE_GETMOUSE
 652         case CMD_MOUSE_EVENT:
 653                 return handle_mouse_event(c);
 654 #endif
 655
 656 #ifdef ENABLE_SONG_SCREEN
 657         case CMD_SCREEN_SONG:
 658                 if (screen_queue_selected_song() != NULL) {
 659                         screen_song_switch(c, screen_queue_selected_song());
 660                         return true;
 661                 }
 662
 663                 break;
 664 #endif
 665
 666 #ifdef ENABLE_LYRICS_SCREEN
 667         case CMD_SCREEN_LYRICS:
 668                 if (lw->selected < playlist_length(&c->playlist)) {
 669                         struct mpd_song *selected = playlist_get(&c->playlist, lw->selected);
 670                         bool follow = false;
 671
 672                         if (c->song && selected &&
 673                             !strcmp(mpd_song_get_uri(selected),
 674                                     mpd_song_get_uri(c->song)))
 675                                 follow = true;
 676
 677                         screen_lyrics_switch(c, selected, follow);
 678                         return true;
 679                 }
 680
 681                 break;
 682 #endif
 683         case CMD_SCREEN_SWAP:
 684                 if (playlist_length(&c->playlist) > 0)
 685                         screen_swap(c, playlist_get(&c->playlist, lw->selected));
 686                 else
 687                         screen_swap(c, NULL);
 688                 return true;
 689
 690         default:
 691                 break;
 692         }
 693
 694         if (!mpdclient_is_connected(c))
 695                 return false;
 696
 697         switch(cmd) {
 698                 const struct mpd_song *song;
 699                 struct list_window_range range;
 700
 701         case CMD_PLAY:
 702                 song = screen_queue_selected_song();
 703                 if (song == NULL)
 704                         return false;
 705
 706                 connection = mpdclient_get_connection(c);
 707                 if (connection != NULL &&
 708                     !mpd_run_play_id(connection, mpd_song_get_id(song)))
 709                         mpdclient_handle_error(c);
 710
 711                 return true;
 712
 713         case CMD_DELETE:
 714                 list_window_get_range(lw, &range);
 715                 mpdclient_cmd_delete_range(c, range.start, range.end);
 716
 717                 list_window_set_cursor(lw, range.start);
 718                 return true;
 719
 720         case CMD_SAVE_PLAYLIST:
 721                 playlist_save(c, NULL, NULL);
 722                 return true;
 723
 724         case CMD_ADD:
 725                 handle_add_to_playlist(c);
 726                 return true;
 727
 728         case CMD_SHUFFLE:
 729                 list_window_get_range(lw, &range);
 730                 if (range.end <= range.start + 1)
 731                         /* No range selection, shuffle all list. */
 732                         break;
 733
 734                 connection = mpdclient_get_connection(c);
 735                 if (connection == NULL)
 736                         return true;
 737
 738                 if (mpd_run_shuffle_range(connection, range.start, range.end))
 739                         screen_status_message(_("Shuffled queue"));
 740                 else
 741                         mpdclient_handle_error(c);
 742                 return true;
 743
 744         case CMD_LIST_MOVE_UP:
 745                 list_window_get_range(lw, &range);
 746                 if (range.start == 0 || range.end <= range.start)
 747                         return false;
 748
 749                 if (!mpdclient_cmd_move(c, range.end - 1, range.start - 1))
 750                         return true;
 751
 752                 lw->selected--;
 753                 lw->range_base--;
 754
 755                 if (lw->range_selection)
 756                         list_window_scroll_to(lw, lw->range_base);
 757                 list_window_scroll_to(lw, lw->selected);
 758
 759                 screen_queue_save_selection();
 760                 return true;
 761
 762         case CMD_LIST_MOVE_DOWN:
 763                 list_window_get_range(lw, &range);
 764                 if (range.end >= playlist_length(&c->playlist))
 765                         return false;
 766
 767                 if (!mpdclient_cmd_move(c, range.start, range.end))
 768                         return true;
 769
 770                 lw->selected++;
 771                 lw->range_base++;
 772
 773                 if (lw->range_selection)
 774                         list_window_scroll_to(lw, lw->range_base);
 775                 list_window_scroll_to(lw, lw->selected);
 776
 777                 screen_queue_save_selection();
 778                 return true;
 779
 780         case CMD_LOCATE:
 781                 if (screen_queue_selected_song() != NULL) {
 782                         screen_file_goto_song(c, screen_queue_selected_song());
 783                         return true;
 784                 }
 785
 786                 break;
 787
 788         default:
 789                 break;
 790         }
 791
 792         return false;
 793 }
 794
 795 const struct screen_functions screen_queue = {
 796         .init = screen_queue_init,
 797         .exit = screen_queue_exit,
 798         .open = screen_queue_open,
 799         .close = screen_queue_close,
 800         .resize = screen_queue_resize,
 801         .paint = screen_queue_paint,
 802         .update = screen_queue_update,
 803         .cmd = screen_queue_cmd,
 804         .get_title = screen_queue_title,
 805 };