src/screen_queue.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 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 [%s/%s] ? "),
 283                                                     filename, YES, NO);
 284                         bool replace = screen_get_yesno(buf, false);
 285                         g_free(buf);
 286
 287                         if (!replace) {
 288                                 g_free(filename_utf8);
 289                                 g_free(filename);
 290                                 screen_status_printf(_("Aborted"));
 291                                 return -1;
 292                         }
 293
 294                         if (!mpd_run_rm(connection, filename_utf8) ||
 295                             !mpd_run_save(connection, filename_utf8)) {
 296                                 mpdclient_handle_error(c);
 297                                 g_free(filename_utf8);
 298                                 g_free(filename);
 299                                 return -1;
 300                         }
 301                 } else {
 302                         mpdclient_handle_error(c);
 303                         g_free(filename_utf8);
 304                         g_free(filename);
 305                         return -1;
 306                 }
 307         }
 308
 309         c->events |= MPD_IDLE_STORED_PLAYLIST;
 310
 311         g_free(filename_utf8);
 312
 313         /* success */
 314         screen_status_printf(_("Saved %s"), filename);
 315         g_free(filename);
 316         return 0;
 317 }
 318
 319 #ifndef NCMPC_MINI
 320 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 321                     GList **list, struct mpdclient *c)
 322 {
 323         g_completion_remove_items(gcmp, *list);
 324         *list = string_list_remove(*list, dir);
 325         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 326         g_completion_add_items(gcmp, *list);
 327         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 328 }
 329
 330 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 331 {
 332         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 333         GList **dir_list = tmp->dir_list;
 334         GList **list = tmp->list;
 335         struct mpdclient *c = tmp->c;
 336
 337         if (*list == NULL) {
 338                 /* create initial list */
 339                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 340                 g_completion_add_items(gcmp, *list);
 341         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 342                    string_list_find(*dir_list, line) == NULL) {
 343                 /* add directory content to list */
 344                 add_dir(gcmp, line, dir_list, list, c);
 345         }
 346 }
 347
 348 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 349                                    GList *items, void *data)
 350 {
 351         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 352         GList **dir_list = tmp->dir_list;
 353         GList **list = tmp->list;
 354         struct mpdclient *c = tmp->c;
 355
 356         if (g_list_length(items) >= 1)
 357                 screen_display_completion_list(items);
 358
 359         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 360             string_list_find(*dir_list, line) == NULL) {
 361                 /* add directory content to list */
 362                 add_dir(gcmp, line, dir_list, list, c);
 363         }
 364 }
 365 #endif
 366
 367 static int
 368 handle_add_to_playlist(struct mpdclient *c)
 369 {
 370 #ifndef NCMPC_MINI
 371         /* initialize completion support */
 372         GCompletion *gcmp = g_completion_new(NULL);
 373         g_completion_set_compare(gcmp, completion_strncmp);
 374
 375         GList *list = NULL;
 376         GList *dir_list = NULL;
 377         completion_callback_data_t data = {
 378                 .list = &list,
 379                 .dir_list = &dir_list,
 380                 .c = c,
 381         };
 382
 383         wrln_completion_callback_data = &data;
 384         wrln_pre_completion_callback = add_pre_completion_cb;
 385         wrln_post_completion_callback = add_post_completion_cb;
 386 #else
 387         GCompletion *gcmp = NULL;
 388 #endif
 389
 390         /* get path */
 391         char *path = screen_readln(_("Add"),
 392                                    NULL,
 393                                    NULL,
 394                                    gcmp);
 395
 396         /* destroy completion data */
 397 #ifndef NCMPC_MINI
 398         wrln_completion_callback_data = NULL;
 399         wrln_pre_completion_callback = NULL;
 400         wrln_post_completion_callback = NULL;
 401         g_completion_free(gcmp);
 402         string_list_free(list);
 403         string_list_free(dir_list);
 404 #endif
 405
 406         /* add the path to the playlist */
 407         if (path != NULL) {
 408                 char *path_utf8 = locale_to_utf8(path);
 409                 mpdclient_cmd_add_path(c, path_utf8);
 410                 g_free(path_utf8);
 411         }
 412
 413         g_free(path);
 414         return 0;
 415 }
 416
 417 static void
 418 screen_queue_init(WINDOW *w, int cols, int rows)
 419 {
 420         lw = list_window_init(w, cols, rows);
 421
 422 #ifndef NCMPC_MINI
 423         if (options.scroll)
 424                 hscroll_init(&hscroll, w, options.scroll_sep);
 425 #endif
 426 }
 427
 428 static gboolean
 429 timer_hide_cursor(gpointer data)
 430 {
 431         struct mpdclient *c = data;
 432
 433         assert(options.hide_cursor > 0);
 434         assert(timer_hide_cursor_id != 0);
 435
 436         timer_hide_cursor_id = 0;
 437
 438         /* hide the cursor when mpd is playing and the user is inactive */
 439
 440         if (c->status != NULL &&
 441             mpd_status_get_state(c->status) == MPD_STATE_PLAY) {
 442                 lw->hide_cursor = true;
 443                 screen_queue_repaint();
 444         } else
 445                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 446                                                      timer_hide_cursor, c);
 447
 448         return FALSE;
 449 }
 450
 451 static void
 452 screen_queue_open(struct mpdclient *c)
 453 {
 454         playlist = &c->playlist;
 455
 456         assert(timer_hide_cursor_id == 0);
 457         if (options.hide_cursor > 0) {
 458                 lw->hide_cursor = false;
 459                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 460                                                      timer_hide_cursor, c);
 461         }
 462
 463         screen_queue_restore_selection();
 464         screen_queue_song_change(c->status);
 465 }
 466
 467 static void
 468 screen_queue_close(void)
 469 {
 470         if (timer_hide_cursor_id != 0) {
 471                 g_source_remove(timer_hide_cursor_id);
 472                 timer_hide_cursor_id = 0;
 473         }
 474
 475 #ifndef NCMPC_MINI
 476         if (options.scroll)
 477                 hscroll_clear(&hscroll);
 478 #endif
 479 }
 480
 481 static void
 482 screen_queue_resize(int cols, int rows)
 483 {
 484         list_window_resize(lw, cols, rows);
 485 }
 486
 487
 488 static void
 489 screen_queue_exit(void)
 490 {
 491         list_window_free(lw);
 492 }
 493
 494 static const char *
 495 screen_queue_title(char *str, size_t size)
 496 {
 497         if (options.host == NULL)
 498                 return _("Queue");
 499
 500         g_snprintf(str, size, _("Queue on %s"), options.host);
 501         return str;
 502 }
 503
 504 static void
 505 screen_queue_paint_callback(WINDOW *w, unsigned i,
 506                             unsigned y, unsigned width,
 507                             bool selected, gcc_unused const void *data)
 508 {
 509         assert(playlist != NULL);
 510         assert(i < playlist_length(playlist));
 511
 512         const struct mpd_song *song = playlist_get(playlist, i);
 513
 514         struct hscroll *row_hscroll = NULL;
 515 #ifndef NCMPC_MINI
 516         row_hscroll = selected && options.scroll && lw->selected == i
 517                 ? &hscroll : NULL;
 518 #endif
 519
 520         paint_song_row(w, y, width, selected,
 521                        (int)mpd_song_get_id(song) == current_song_id,
 522                        song, row_hscroll, options.list_format);
 523 }
 524
 525 static void
 526 screen_queue_paint(void)
 527 {
 528 #ifndef NCMPC_MINI
 529         if (options.scroll)
 530                 hscroll_clear(&hscroll);
 531 #endif
 532
 533         list_window_paint2(lw, screen_queue_paint_callback, NULL);
 534 }
 535
 536 static void
 537 screen_queue_update(struct mpdclient *c)
 538 {
 539         if (c->events & MPD_IDLE_QUEUE)
 540                 screen_queue_restore_selection();
 541         else
 542                 /* the queue size may have changed, even if we havn't
 543                    received the QUEUE idle event yet */
 544                 list_window_set_length(lw, playlist_length(playlist));
 545
 546         if (((c->events & MPD_IDLE_PLAYER) != 0 &&
 547              screen_queue_song_change(c->status)) ||
 548             c->events & MPD_IDLE_QUEUE)
 549                 /* the queue or the current song has changed, we must
 550                    paint the new version */
 551                 screen_queue_repaint();
 552 }
 553
 554 #ifdef HAVE_GETMOUSE
 555 static bool
 556 handle_mouse_event(struct mpdclient *c)
 557 {
 558         unsigned long bstate;
 559         int row;
 560         if (screen_get_mouse_event(c, &bstate, &row) ||
 561             list_window_mouse(lw, bstate, row)) {
 562                 screen_queue_repaint();
 563                 return true;
 564         }
 565
 566         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 567                 /* stop */
 568                 screen_cmd(c, CMD_STOP);
 569                 return true;
 570         }
 571
 572         const unsigned old_selected = lw->selected;
 573         list_window_set_cursor(lw, lw->start + row);
 574
 575         if (bstate & BUTTON1_CLICKED) {
 576                 /* play */
 577                 const struct mpd_song *song = screen_queue_selected_song();
 578                 if (song != NULL) {
 579                         struct mpd_connection *connection =
 580                                 mpdclient_get_connection(c);
 581
 582                         if (connection != NULL &&
 583                             !mpd_run_play_id(connection,
 584                                              mpd_song_get_id(song)))
 585                                 mpdclient_handle_error(c);
 586                 }
 587         } else if (bstate & BUTTON3_CLICKED) {
 588                 /* delete */
 589                 if (lw->selected == old_selected)
 590                         mpdclient_cmd_delete(c, lw->selected);
 591
 592                 list_window_set_length(lw, playlist_length(playlist));
 593         }
 594
 595         screen_queue_save_selection();
 596         screen_queue_repaint();
 597
 598         return true;
 599 }
 600 #endif
 601
 602 static bool
 603 screen_queue_cmd(struct mpdclient *c, command_t cmd)
 604 {
 605         struct mpd_connection *connection;
 606         static command_t cached_cmd = CMD_NONE;
 607
 608         const command_t prev_cmd = cached_cmd;
 609         cached_cmd = cmd;
 610
 611         lw->hide_cursor = false;
 612
 613         if (options.hide_cursor > 0) {
 614                 if (timer_hide_cursor_id != 0)
 615                         g_source_remove(timer_hide_cursor_id);
 616                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 617                                                      timer_hide_cursor, c);
 618         }
 619
 620         if (list_window_cmd(lw, cmd)) {
 621                 screen_queue_save_selection();
 622                 screen_queue_repaint();
 623                 return true;
 624         }
 625
 626         switch(cmd) {
 627         case CMD_SCREEN_UPDATE:
 628                 center_playing_item(c->status, prev_cmd == CMD_SCREEN_UPDATE);
 629                 screen_queue_repaint();
 630                 return false;
 631         case CMD_SELECT_PLAYING:
 632                 list_window_set_cursor(lw, playlist_get_index(&c->playlist,
 633                                                               c->song));
 634                 screen_queue_save_selection();
 635                 screen_queue_repaint();
 636                 return true;
 637
 638         case CMD_LIST_FIND:
 639         case CMD_LIST_RFIND:
 640         case CMD_LIST_FIND_NEXT:
 641         case CMD_LIST_RFIND_NEXT:
 642                 screen_find(lw, cmd, screen_queue_lw_callback, NULL);
 643                 screen_queue_save_selection();
 644                 screen_queue_repaint();
 645                 return true;
 646         case CMD_LIST_JUMP:
 647                 screen_jump(lw, screen_queue_lw_callback, NULL, NULL, NULL);
 648                 screen_queue_save_selection();
 649                 screen_queue_repaint();
 650                 return true;
 651
 652 #ifdef HAVE_GETMOUSE
 653         case CMD_MOUSE_EVENT:
 654                 return handle_mouse_event(c);
 655 #endif
 656
 657 #ifdef ENABLE_SONG_SCREEN
 658         case CMD_SCREEN_SONG:
 659                 if (screen_queue_selected_song() != NULL) {
 660                         screen_song_switch(c, screen_queue_selected_song());
 661                         return true;
 662                 }
 663
 664                 break;
 665 #endif
 666
 667 #ifdef ENABLE_LYRICS_SCREEN
 668         case CMD_SCREEN_LYRICS:
 669                 if (lw->selected < playlist_length(&c->playlist)) {
 670                         struct mpd_song *selected = playlist_get(&c->playlist, lw->selected);
 671                         bool follow = false;
 672
 673                         if (c->song && selected &&
 674                             !strcmp(mpd_song_get_uri(selected),
 675                                     mpd_song_get_uri(c->song)))
 676                                 follow = true;
 677
 678                         screen_lyrics_switch(c, selected, follow);
 679                         return true;
 680                 }
 681
 682                 break;
 683 #endif
 684         case CMD_SCREEN_SWAP:
 685                 if (playlist_length(&c->playlist) > 0)
 686                         screen_swap(c, playlist_get(&c->playlist, lw->selected));
 687                 else
 688                         screen_swap(c, NULL);
 689                 return true;
 690
 691         default:
 692                 break;
 693         }
 694
 695         if (!mpdclient_is_connected(c))
 696                 return false;
 697
 698         switch(cmd) {
 699                 const struct mpd_song *song;
 700                 struct list_window_range range;
 701
 702         case CMD_PLAY:
 703                 song = screen_queue_selected_song();
 704                 if (song == NULL)
 705                         return false;
 706
 707                 connection = mpdclient_get_connection(c);
 708                 if (connection != NULL &&
 709                     !mpd_run_play_id(connection, mpd_song_get_id(song)))
 710                         mpdclient_handle_error(c);
 711
 712                 return true;
 713
 714         case CMD_DELETE:
 715                 list_window_get_range(lw, &range);
 716                 mpdclient_cmd_delete_range(c, range.start, range.end);
 717
 718                 list_window_set_cursor(lw, range.start);
 719                 return true;
 720
 721         case CMD_SAVE_PLAYLIST:
 722                 playlist_save(c, NULL, NULL);
 723                 return true;
 724
 725         case CMD_ADD:
 726                 handle_add_to_playlist(c);
 727                 return true;
 728
 729         case CMD_SHUFFLE:
 730                 list_window_get_range(lw, &range);
 731                 if (range.end <= range.start + 1)
 732                         /* No range selection, shuffle all list. */
 733                         break;
 734
 735                 connection = mpdclient_get_connection(c);
 736                 if (connection == NULL)
 737                         return true;
 738
 739                 if (mpd_run_shuffle_range(connection, range.start, range.end))
 740                         screen_status_message(_("Shuffled queue"));
 741                 else
 742                         mpdclient_handle_error(c);
 743                 return true;
 744
 745         case CMD_LIST_MOVE_UP:
 746                 list_window_get_range(lw, &range);
 747                 if (range.start == 0 || range.end <= range.start)
 748                         return false;
 749
 750                 if (!mpdclient_cmd_move(c, range.end - 1, range.start - 1))
 751                         return true;
 752
 753                 lw->selected--;
 754                 lw->range_base--;
 755
 756                 if (lw->range_selection)
 757                         list_window_scroll_to(lw, lw->range_base);
 758                 list_window_scroll_to(lw, lw->selected);
 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                 if (lw->range_selection)
 775                         list_window_scroll_to(lw, lw->range_base);
 776                 list_window_scroll_to(lw, lw->selected);
 777
 778                 screen_queue_save_selection();
 779                 return true;
 780
 781         case CMD_LOCATE:
 782                 if (screen_queue_selected_song() != NULL) {
 783                         screen_file_goto_song(c, screen_queue_selected_song());
 784                         return true;
 785                 }
 786
 787                 break;
 788
 789         default:
 790                 break;
 791         }
 792
 793         return false;
 794 }
 795
 796 const struct screen_functions screen_queue = {
 797         .init = screen_queue_init,
 798         .exit = screen_queue_exit,
 799         .open = screen_queue_open,
 800         .close = screen_queue_close,
 801         .resize = screen_queue_resize,
 802         .paint = screen_queue_paint,
 803         .update = screen_queue_update,
 804         .cmd = screen_queue_cmd,
 805         .get_title = screen_queue_title,
 806 };