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 "colors.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 static guint scroll_source_id;
  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         const struct mpd_song *song;
 100         int pos;
 101
 102         list_window_set_length(lw, playlist_length(playlist));
 103
 104         if (selected_song_id < 0)
 105                 /* there was no selection */
 106                 return;
 107
 108         song = screen_queue_selected_song();
 109         if (song != NULL &&
 110             mpd_song_get_id(song) == (unsigned)selected_song_id)
 111                 /* selection is still valid */
 112                 return;
 113
 114         pos = playlist_get_index_from_id(playlist, selected_song_id);
 115         if (pos >= 0)
 116                 list_window_set_cursor(lw, pos);
 117
 118         screen_queue_save_selection();
 119 }
 120
 121 #ifndef NCMPC_MINI
 122 static gboolean
 123 scroll_timer_callback(G_GNUC_UNUSED gpointer data)
 124 {
 125         scroll_source_id = 0;
 126
 127         hscroll_step(&hscroll);
 128         screen_queue_repaint();
 129         return false;
 130 }
 131 #endif
 132
 133 static const char *
 134 screen_queue_lw_callback(unsigned idx, bool *highlight, char **second_column,
 135                          G_GNUC_UNUSED void *data)
 136 {
 137         static char songname[MAX_SONG_LENGTH];
 138         struct mpd_song *song;
 139
 140         assert(playlist != NULL);
 141         assert(idx < playlist_length(playlist));
 142
 143         song = playlist_get(playlist, idx);
 144         if ((int)mpd_song_get_id(song) == current_song_id)
 145                 *highlight = true;
 146
 147         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 148
 149 #ifndef NCMPC_MINI
 150         if (second_column != NULL && mpd_song_get_duration(song) > 0) {
 151                 char duration[32];
 152                 format_duration_short(duration, sizeof(duration),
 153                                       mpd_song_get_duration(song));
 154                 *second_column = g_strdup(duration);
 155         }
 156
 157         if (idx == lw->selected)
 158         {
 159                 int second_column_len = 0;
 160                 if (second_column != NULL && *second_column != NULL)
 161                         second_column_len = strlen(*second_column);
 162                 if (options.scroll && utf8_width(songname) > (unsigned)(COLS - second_column_len - 1) )
 163                 {
 164                         static unsigned current_song;
 165                         char *tmp;
 166
 167                         if (current_song != lw->selected) {
 168                                 hscroll_reset(&hscroll);
 169                                 current_song = lw->selected;
 170                         }
 171
 172                         tmp = strscroll(&hscroll, songname, options.scroll_sep,
 173                                         MAX_SONG_LENGTH);
 174                         g_strlcpy(songname, tmp, MAX_SONG_LENGTH);
 175                         g_free(tmp);
 176
 177                         if (scroll_source_id == 0)
 178                                 scroll_source_id =
 179                                         g_timeout_add(1000,
 180                                                       scroll_timer_callback,
 181                                                       NULL);
 182                 } else {
 183                         hscroll_reset(&hscroll);
 184
 185                         if (scroll_source_id != 0) {
 186                                 g_source_remove(scroll_source_id);
 187                                 scroll_source_id = 0;
 188                         }
 189                 }
 190         }
 191 #else
 192         (void)second_column;
 193 #endif
 194
 195         return songname;
 196 }
 197
 198 static void
 199 center_playing_item(struct mpdclient *c, bool center_cursor)
 200 {
 201         const struct mpd_song *song;
 202         unsigned length = c->playlist.list->len;
 203         int idx;
 204
 205         song = mpdclient_get_current_song(c);
 206         if (song == NULL)
 207                 return;
 208
 209         /* try to center the song that are playing */
 210         idx = playlist_get_index(&c->playlist, c->song);
 211         if (idx < 0)
 212                 return;
 213
 214         if (length < lw->rows)
 215         {
 216                 if (center_cursor)
 217                         list_window_set_cursor(lw, idx);
 218                 return;
 219         }
 220
 221         list_window_center(lw, idx);
 222
 223         if (center_cursor) {
 224                 list_window_set_cursor(lw, idx);
 225                 return;
 226         }
 227
 228         /* make sure the cursor is in the window */
 229         list_window_fetch_cursor(lw);
 230 }
 231
 232 #ifndef NCMPC_MINI
 233 static void
 234 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 235                        void *data)
 236 {
 237         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 238         GList **list = tmp->list;
 239         struct mpdclient *c = tmp->c;
 240
 241         if( *list == NULL ) {
 242                 /* create completion list */
 243                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 244                 g_completion_add_items(gcmp, *list);
 245         }
 246 }
 247
 248 static void
 249 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 250                         G_GNUC_UNUSED gchar *line, GList *items,
 251                         G_GNUC_UNUSED void *data)
 252 {
 253         if (g_list_length(items) >= 1)
 254                 screen_display_completion_list(items);
 255 }
 256 #endif
 257
 258 #ifndef NCMPC_MINI
 259 /**
 260  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 261  * g_completion_set_compare(), because strncmp() takes size_t where
 262  * g_completion_set_compare passes a gsize value.
 263  */
 264 static gint
 265 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 266 {
 267         return strncmp(s1, s2, n);
 268 }
 269 #endif
 270
 271 int
 272 playlist_save(struct mpdclient *c, char *name, char *defaultname)
 273 {
 274         struct mpd_connection *connection;
 275         gchar *filename, *filename_utf8;
 276 #ifndef NCMPC_MINI
 277         GCompletion *gcmp;
 278         GList *list = NULL;
 279         completion_callback_data_t data;
 280 #endif
 281
 282 #ifdef NCMPC_MINI
 283         (void)defaultname;
 284 #endif
 285
 286 #ifndef NCMPC_MINI
 287         if (name == NULL) {
 288                 /* initialize completion support */
 289                 gcmp = g_completion_new(NULL);
 290                 g_completion_set_compare(gcmp, completion_strncmp);
 291                 data.list = &list;
 292                 data.dir_list = NULL;
 293                 data.c = c;
 294                 wrln_completion_callback_data = &data;
 295                 wrln_pre_completion_callback = save_pre_completion_cb;
 296                 wrln_post_completion_callback = save_post_completion_cb;
 297
 298
 299                 /* query the user for a filename */
 300                 filename = screen_readln(_("Save playlist as"),
 301                                          defaultname,
 302                                          NULL,
 303                                          gcmp);
 304
 305                 /* destroy completion support */
 306                 wrln_completion_callback_data = NULL;
 307                 wrln_pre_completion_callback = NULL;
 308                 wrln_post_completion_callback = NULL;
 309                 g_completion_free(gcmp);
 310                 list = string_list_free(list);
 311                 if( filename )
 312                         filename=g_strstrip(filename);
 313         } else
 314 #endif
 315                         filename=g_strdup(name);
 316
 317         if (filename == NULL)
 318                 return -1;
 319
 320         /* send save command to mpd */
 321
 322         filename_utf8 = locale_to_utf8(filename);
 323
 324         connection = mpdclient_get_connection(c);
 325         if (!mpd_run_save(connection, filename_utf8)) {
 326                 if (mpd_connection_get_error(connection) == MPD_ERROR_SERVER &&
 327                     mpd_connection_get_server_error(connection) == MPD_SERVER_ERROR_EXIST &&
 328                     mpd_connection_clear_error(connection)) {
 329                         char *buf;
 330                         int key;
 331
 332                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 333                                               filename, YES, NO);
 334                         key = tolower(screen_getch(buf));
 335                         g_free(buf);
 336
 337                         if (key != YES[0]) {
 338                                 g_free(filename_utf8);
 339                                 g_free(filename);
 340                                 screen_status_printf(_("Aborted"));
 341                                 return -1;
 342                         }
 343
 344                         if (!mpd_run_rm(connection, filename_utf8) ||
 345                             !mpd_run_save(connection, filename_utf8)) {
 346                                 mpdclient_handle_error(c);
 347                                 g_free(filename_utf8);
 348                                 g_free(filename);
 349                                 return -1;
 350                         }
 351                 } else {
 352                         mpdclient_handle_error(c);
 353                         g_free(filename_utf8);
 354                         g_free(filename);
 355                         return -1;
 356                 }
 357         }
 358
 359         c->events |= MPD_IDLE_STORED_PLAYLIST;
 360
 361         g_free(filename_utf8);
 362
 363         /* success */
 364         screen_status_printf(_("Saved %s"), filename);
 365         g_free(filename);
 366         return 0;
 367 }
 368
 369 #ifndef NCMPC_MINI
 370 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 371                     GList **list, struct mpdclient *c)
 372 {
 373         g_completion_remove_items(gcmp, *list);
 374         *list = string_list_remove(*list, dir);
 375         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 376         g_completion_add_items(gcmp, *list);
 377         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 378 }
 379
 380 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 381 {
 382         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 383         GList **dir_list = tmp->dir_list;
 384         GList **list = tmp->list;
 385         struct mpdclient *c = tmp->c;
 386
 387         if (*list == NULL) {
 388                 /* create initial list */
 389                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 390                 g_completion_add_items(gcmp, *list);
 391         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 392                    string_list_find(*dir_list, line) == NULL) {
 393                 /* add directory content to list */
 394                 add_dir(gcmp, line, dir_list, list, c);
 395         }
 396 }
 397
 398 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 399                                    GList *items, void *data)
 400 {
 401         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 402         GList **dir_list = tmp->dir_list;
 403         GList **list = tmp->list;
 404         struct mpdclient *c = tmp->c;
 405
 406         if (g_list_length(items) >= 1)
 407                 screen_display_completion_list(items);
 408
 409         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 410             string_list_find(*dir_list, line) == NULL) {
 411                 /* add directory content to list */
 412                 add_dir(gcmp, line, dir_list, list, c);
 413         }
 414 }
 415 #endif
 416
 417 static int
 418 handle_add_to_playlist(struct mpdclient *c)
 419 {
 420         gchar *path;
 421 #ifndef NCMPC_MINI
 422         GCompletion *gcmp;
 423         GList *list = NULL;
 424         GList *dir_list = NULL;
 425         completion_callback_data_t data;
 426
 427         /* initialize completion support */
 428         gcmp = g_completion_new(NULL);
 429         g_completion_set_compare(gcmp, completion_strncmp);
 430         data.list = &list;
 431         data.dir_list = &dir_list;
 432         data.c = c;
 433         wrln_completion_callback_data = &data;
 434         wrln_pre_completion_callback = add_pre_completion_cb;
 435         wrln_post_completion_callback = add_post_completion_cb;
 436 #endif
 437
 438         /* get path */
 439         path = screen_readln(_("Add"),
 440                              NULL,
 441                              NULL,
 442 #ifdef NCMPC_MINI
 443                              NULL
 444 #else
 445                              gcmp
 446 #endif
 447                              );
 448
 449         /* destroy completion data */
 450 #ifndef NCMPC_MINI
 451         wrln_completion_callback_data = NULL;
 452         wrln_pre_completion_callback = NULL;
 453         wrln_post_completion_callback = NULL;
 454         g_completion_free(gcmp);
 455         string_list_free(list);
 456         string_list_free(dir_list);
 457 #endif
 458
 459         /* add the path to the playlist */
 460         if (path != NULL) {
 461                 char *path_utf8 = locale_to_utf8(path);
 462                 mpdclient_cmd_add_path(c, path_utf8);
 463                 g_free(path_utf8);
 464         }
 465
 466         g_free(path);
 467         return 0;
 468 }
 469
 470 static void
 471 screen_queue_init(WINDOW *w, int cols, int rows)
 472 {
 473         lw = list_window_init(w, cols, rows);
 474 }
 475
 476 static gboolean
 477 timer_hide_cursor(gpointer data)
 478 {
 479         struct mpdclient *c = data;
 480
 481         assert(options.hide_cursor > 0);
 482         assert(timer_hide_cursor_id != 0);
 483
 484         timer_hide_cursor_id = 0;
 485
 486         /* hide the cursor when mpd is playing and the user is inactive */
 487
 488         if (c->status != NULL &&
 489             mpd_status_get_state(c->status) == MPD_STATE_PLAY) {
 490                 lw->hide_cursor = true;
 491                 screen_queue_repaint();
 492         } else
 493                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 494                                                      timer_hide_cursor, c);
 495
 496         return FALSE;
 497 }
 498
 499 static void
 500 screen_queue_open(struct mpdclient *c)
 501 {
 502         playlist = &c->playlist;
 503
 504         assert(timer_hide_cursor_id == 0);
 505         if (options.hide_cursor > 0) {
 506                 lw->hide_cursor = false;
 507                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 508                                                      timer_hide_cursor, c);
 509         }
 510
 511         screen_queue_restore_selection();
 512 }
 513
 514 static void
 515 screen_queue_close(void)
 516 {
 517         if (timer_hide_cursor_id != 0) {
 518                 g_source_remove(timer_hide_cursor_id);
 519                 timer_hide_cursor_id = 0;
 520         }
 521 }
 522
 523 static void
 524 screen_queue_resize(int cols, int rows)
 525 {
 526         list_window_resize(lw, cols, rows);
 527 }
 528
 529
 530 static void
 531 screen_queue_exit(void)
 532 {
 533         list_window_free(lw);
 534 }
 535
 536 static const char *
 537 screen_queue_title(char *str, size_t size)
 538 {
 539         if (options.host == NULL)
 540                 return _("Playlist");
 541
 542         g_snprintf(str, size, _("Playlist on %s"), options.host);
 543         return str;
 544 }
 545
 546 static void
 547 screen_queue_paint(void)
 548 {
 549         list_window_paint(lw, screen_queue_lw_callback, NULL);
 550 }
 551
 552 static void
 553 screen_queue_update(struct mpdclient *c)
 554 {
 555         static int prev_song_id = -1;
 556
 557         if (c->events & MPD_IDLE_PLAYLIST)
 558                 screen_queue_restore_selection();
 559
 560         current_song_id = c->status != NULL &&
 561                 (mpd_status_get_state(c->status) == MPD_STATE_PLAY ||
 562                  mpd_status_get_state(c->status) == MPD_STATE_PAUSE)
 563                 ? (int)mpd_status_get_song_id(c->status) : -1;
 564
 565         if (current_song_id != prev_song_id) {
 566                 prev_song_id = current_song_id;
 567
 568                 /* center the cursor */
 569                 if (options.auto_center && current_song_id != -1 && ! lw->range_selection)
 570                         center_playing_item(c, false);
 571
 572                 screen_queue_repaint();
 573         } else if (c->events & MPD_IDLE_PLAYLIST) {
 574                 /* the playlist has changed, we must paint the new
 575                    version */
 576                 screen_queue_repaint();
 577         }
 578 }
 579
 580 #ifdef HAVE_GETMOUSE
 581 static bool
 582 handle_mouse_event(struct mpdclient *c)
 583 {
 584         int row;
 585         unsigned selected;
 586         unsigned long bstate;
 587
 588         if (screen_get_mouse_event(c, &bstate, &row) ||
 589             list_window_mouse(lw, bstate, row)) {
 590                 screen_queue_repaint();
 591                 return true;
 592         }
 593
 594         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 595                 /* stop */
 596                 screen_cmd(c, CMD_STOP);
 597                 return true;
 598         }
 599
 600         selected = lw->start + row;
 601
 602         if (bstate & BUTTON1_CLICKED) {
 603                 /* play */
 604                 if (lw->start + row < playlist_length(playlist))
 605                         mpdclient_cmd_play(c, lw->start + row);
 606         } else if (bstate & BUTTON3_CLICKED) {
 607                 /* delete */
 608                 if (selected == lw->selected)
 609                         mpdclient_cmd_delete(c, lw->selected);
 610         }
 611
 612         list_window_set_cursor(lw, selected);
 613         screen_queue_save_selection();
 614         screen_queue_repaint();
 615
 616         return true;
 617 }
 618 #endif
 619
 620 static bool
 621 screen_queue_cmd(struct mpdclient *c, command_t cmd)
 622 {
 623         struct mpd_connection *connection;
 624         static command_t cached_cmd = CMD_NONE;
 625         command_t prev_cmd = cached_cmd;
 626         struct list_window_range range;
 627
 628         cached_cmd = cmd;
 629
 630         lw->hide_cursor = false;
 631
 632         if (options.hide_cursor > 0) {
 633                 if (timer_hide_cursor_id != 0)
 634                         g_source_remove(timer_hide_cursor_id);
 635                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 636                                                      timer_hide_cursor, c);
 637         }
 638
 639         if (list_window_cmd(lw, cmd)) {
 640                 screen_queue_save_selection();
 641                 screen_queue_repaint();
 642                 return true;
 643         }
 644
 645         switch(cmd) {
 646         case CMD_SCREEN_UPDATE:
 647                 center_playing_item(c, prev_cmd == CMD_SCREEN_UPDATE);
 648                 screen_queue_repaint();
 649                 return false;
 650         case CMD_SELECT_PLAYING:
 651                 list_window_set_cursor(lw, playlist_get_index(&c->playlist,
 652                                                               c->song));
 653                 screen_queue_save_selection();
 654                 screen_queue_repaint();
 655                 return true;
 656
 657         case CMD_LIST_FIND:
 658         case CMD_LIST_RFIND:
 659         case CMD_LIST_FIND_NEXT:
 660         case CMD_LIST_RFIND_NEXT:
 661                 screen_find(lw, cmd, screen_queue_lw_callback, NULL);
 662                 screen_queue_save_selection();
 663                 screen_queue_repaint();
 664                 return true;
 665         case CMD_LIST_JUMP:
 666                 screen_jump(lw, screen_queue_lw_callback, NULL, NULL);
 667                 screen_queue_save_selection();
 668                 screen_queue_repaint();
 669                 return true;
 670
 671 #ifdef HAVE_GETMOUSE
 672         case CMD_MOUSE_EVENT:
 673                 return handle_mouse_event(c);
 674 #endif
 675
 676 #ifdef ENABLE_SONG_SCREEN
 677         case CMD_SCREEN_SONG:
 678                 if (screen_queue_selected_song() != NULL) {
 679                         screen_song_switch(c, screen_queue_selected_song());
 680                         return true;
 681                 }
 682
 683                 break;
 684 #endif
 685
 686 #ifdef ENABLE_LYRICS_SCREEN
 687         case CMD_SCREEN_LYRICS:
 688                 if (lw->selected < playlist_length(&c->playlist)) {
 689                         struct mpd_song *selected = playlist_get(&c->playlist, lw->selected);
 690                         bool follow = false;
 691
 692                         if (c->song && selected &&
 693                             !strcmp(mpd_song_get_uri(selected),
 694                                     mpd_song_get_uri(c->song)))
 695                                 follow = true;
 696
 697                         screen_lyrics_switch(c, selected, follow);
 698                         return true;
 699                 }
 700
 701                 break;
 702 #endif
 703         case CMD_SCREEN_SWAP:
 704                 screen_swap(c, playlist_get(&c->playlist, lw->selected));
 705                 return true;
 706
 707         default:
 708                 break;
 709         }
 710
 711         if (!mpdclient_is_connected(c))
 712                 return false;
 713
 714         switch(cmd) {
 715         case CMD_PLAY:
 716                 mpdclient_cmd_play(c, lw->selected);
 717                 return true;
 718
 719         case CMD_DELETE:
 720                 list_window_get_range(lw, &range);
 721                 mpdclient_cmd_delete_range(c, range.start, range.end);
 722
 723                 list_window_set_cursor(lw, range.start);
 724                 return true;
 725
 726         case CMD_SAVE_PLAYLIST:
 727                 playlist_save(c, NULL, NULL);
 728                 return true;
 729
 730         case CMD_ADD:
 731                 handle_add_to_playlist(c);
 732                 return true;
 733
 734         case CMD_SHUFFLE:
 735                 list_window_get_range(lw, &range);
 736                 if (range.end < range.start + 1)
 737                         /* No range selection, shuffle all list. */
 738                         break;
 739
 740                 connection = mpdclient_get_connection(c);
 741                 if (mpd_run_shuffle_range(connection, range.start, range.end))
 742                         screen_status_message(_("Shuffled playlist"));
 743                 else
 744                         mpdclient_handle_error(c);
 745                 return true;
 746
 747         case CMD_LIST_MOVE_UP:
 748                 list_window_get_range(lw, &range);
 749                 if (range.start == 0 || range.end <= range.start)
 750                         return false;
 751
 752                 for (unsigned i = range.start; i < range.end; ++i)
 753                         mpdclient_cmd_move(c, i, i - 1);
 754
 755                 lw->selected--;
 756                 lw->range_base--;
 757
 758                 screen_queue_save_selection();
 759                 return true;
 760
 761         case CMD_LIST_MOVE_DOWN:
 762                 list_window_get_range(lw, &range);
 763                 if (range.end >= playlist_length(&c->playlist))
 764                         return false;
 765
 766                 for (int i = range.end - 1; i >= (int)range.start; --i)
 767                         mpdclient_cmd_move(c, i, i + 1);
 768
 769                 lw->selected++;
 770                 lw->range_base++;
 771
 772                 screen_queue_save_selection();
 773                 return true;
 774
 775         case CMD_LOCATE:
 776                 if (screen_queue_selected_song() != NULL) {
 777                         screen_file_goto_song(c, screen_queue_selected_song());
 778                         return true;
 779                 }
 780
 781                 break;
 782
 783         default:
 784                 break;
 785         }
 786
 787         return false;
 788 }
 789
 790 const struct screen_functions screen_queue = {
 791         .init = screen_queue_init,
 792         .exit = screen_queue_exit,
 793         .open = screen_queue_open,
 794         .close = screen_queue_close,
 795         .resize = screen_queue_resize,
 796         .paint = screen_queue_paint,
 797         .update = screen_queue_update,
 798         .cmd = screen_queue_cmd,
 799         .get_title = screen_queue_title,
 800 };