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 /*
  60 static struct hscroll hscroll;
  61 static guint scroll_source_id;
  62 */
  63 #endif
  64
  65 static struct mpdclient_playlist *playlist;
  66 static int current_song_id = -1;
  67 static int selected_song_id = -1;
  68 static struct list_window *lw;
  69 static guint timer_hide_cursor_id;
  70
  71 static void
  72 screen_queue_paint(void);
  73
  74 static void
  75 screen_queue_repaint(void)
  76 {
  77         screen_queue_paint();
  78         wrefresh(lw->w);
  79 }
  80
  81 static const struct mpd_song *
  82 screen_queue_selected_song(void)
  83 {
  84         return !lw->range_selection &&
  85                 lw->selected < playlist_length(playlist)
  86                 ? playlist_get(playlist, lw->selected)
  87                 : NULL;
  88 }
  89
  90 static void
  91 screen_queue_save_selection(void)
  92 {
  93         selected_song_id = screen_queue_selected_song() != NULL
  94                 ? (int)mpd_song_get_id(screen_queue_selected_song())
  95                 : -1;
  96 }
  97
  98 static void
  99 screen_queue_restore_selection(void)
 100 {
 101         const struct mpd_song *song;
 102         int pos;
 103
 104         list_window_set_length(lw, playlist_length(playlist));
 105
 106         if (selected_song_id < 0)
 107                 /* there was no selection */
 108                 return;
 109
 110         song = screen_queue_selected_song();
 111         if (song != NULL &&
 112             mpd_song_get_id(song) == (unsigned)selected_song_id)
 113                 /* selection is still valid */
 114                 return;
 115
 116         pos = playlist_get_index_from_id(playlist, selected_song_id);
 117         if (pos >= 0)
 118                 list_window_set_cursor(lw, pos);
 119
 120         screen_queue_save_selection();
 121 }
 122
 123 /*
 124 #ifndef NCMPC_MINI
 125 static gboolean
 126 scroll_timer_callback(G_GNUC_UNUSED gpointer data)
 127 {
 128         scroll_source_id = 0;
 129
 130         hscroll_step(&hscroll);
 131         screen_queue_repaint();
 132         return false;
 133 }
 134 #endif
 135 */
 136
 137 static const char *
 138 screen_queue_lw_callback(unsigned idx, G_GNUC_UNUSED void *data)
 139 {
 140         static char songname[MAX_SONG_LENGTH];
 141         struct mpd_song *song;
 142
 143         assert(playlist != NULL);
 144         assert(idx < playlist_length(playlist));
 145
 146         song = playlist_get(playlist, idx);
 147
 148         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 149
 150         /*
 151 #ifndef NCMPC_MINI
 152         if (idx == lw->selected)
 153         {
 154                 if (options.scroll && utf8_width(songname) > (unsigned)COLS) {
 155                         static unsigned current_song;
 156                         char *tmp;
 157
 158                         if (current_song != lw->selected) {
 159                                 hscroll_reset(&hscroll);
 160                                 current_song = lw->selected;
 161                         }
 162
 163                         tmp = strscroll(&hscroll, songname, options.scroll_sep,
 164                                         MAX_SONG_LENGTH);
 165                         g_strlcpy(songname, tmp, MAX_SONG_LENGTH);
 166                         g_free(tmp);
 167
 168                         if (scroll_source_id == 0)
 169                                 scroll_source_id =
 170                                         g_timeout_add(1000,
 171                                                       scroll_timer_callback,
 172                                                       NULL);
 173                 } else {
 174                         hscroll_reset(&hscroll);
 175
 176                         if (scroll_source_id != 0) {
 177                                 g_source_remove(scroll_source_id);
 178                                 scroll_source_id = 0;
 179                         }
 180                 }
 181         }
 182 #endif
 183         */
 184
 185         return songname;
 186 }
 187
 188 static void
 189 center_playing_item(struct mpdclient *c, bool center_cursor)
 190 {
 191         const struct mpd_song *song;
 192         unsigned length = c->playlist.list->len;
 193         int idx;
 194
 195         song = mpdclient_get_current_song(c);
 196         if (song == NULL)
 197                 return;
 198
 199         /* try to center the song that are playing */
 200         idx = playlist_get_index(&c->playlist, c->song);
 201         if (idx < 0)
 202                 return;
 203
 204         if (length < lw->rows)
 205         {
 206                 if (center_cursor)
 207                         list_window_set_cursor(lw, idx);
 208                 return;
 209         }
 210
 211         list_window_center(lw, idx);
 212
 213         if (center_cursor) {
 214                 list_window_set_cursor(lw, idx);
 215                 return;
 216         }
 217
 218         /* make sure the cursor is in the window */
 219         list_window_fetch_cursor(lw);
 220 }
 221
 222 #ifndef NCMPC_MINI
 223 static void
 224 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 225                        void *data)
 226 {
 227         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 228         GList **list = tmp->list;
 229         struct mpdclient *c = tmp->c;
 230
 231         if( *list == NULL ) {
 232                 /* create completion list */
 233                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 234                 g_completion_add_items(gcmp, *list);
 235         }
 236 }
 237
 238 static void
 239 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 240                         G_GNUC_UNUSED gchar *line, GList *items,
 241                         G_GNUC_UNUSED void *data)
 242 {
 243         if (g_list_length(items) >= 1)
 244                 screen_display_completion_list(items);
 245 }
 246 #endif
 247
 248 #ifndef NCMPC_MINI
 249 /**
 250  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 251  * g_completion_set_compare(), because strncmp() takes size_t where
 252  * g_completion_set_compare passes a gsize value.
 253  */
 254 static gint
 255 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 256 {
 257         return strncmp(s1, s2, n);
 258 }
 259 #endif
 260
 261 int
 262 playlist_save(struct mpdclient *c, char *name, char *defaultname)
 263 {
 264         struct mpd_connection *connection;
 265         gchar *filename, *filename_utf8;
 266 #ifndef NCMPC_MINI
 267         GCompletion *gcmp;
 268         GList *list = NULL;
 269         completion_callback_data_t data;
 270 #endif
 271
 272 #ifdef NCMPC_MINI
 273         (void)defaultname;
 274 #endif
 275
 276 #ifndef NCMPC_MINI
 277         if (name == NULL) {
 278                 /* initialize completion support */
 279                 gcmp = g_completion_new(NULL);
 280                 g_completion_set_compare(gcmp, completion_strncmp);
 281                 data.list = &list;
 282                 data.dir_list = NULL;
 283                 data.c = c;
 284                 wrln_completion_callback_data = &data;
 285                 wrln_pre_completion_callback = save_pre_completion_cb;
 286                 wrln_post_completion_callback = save_post_completion_cb;
 287
 288
 289                 /* query the user for a filename */
 290                 filename = screen_readln(_("Save playlist as"),
 291                                          defaultname,
 292                                          NULL,
 293                                          gcmp);
 294
 295                 /* destroy completion support */
 296                 wrln_completion_callback_data = NULL;
 297                 wrln_pre_completion_callback = NULL;
 298                 wrln_post_completion_callback = NULL;
 299                 g_completion_free(gcmp);
 300                 list = string_list_free(list);
 301                 if( filename )
 302                         filename=g_strstrip(filename);
 303         } else
 304 #endif
 305                         filename=g_strdup(name);
 306
 307         if (filename == NULL)
 308                 return -1;
 309
 310         /* send save command to mpd */
 311
 312         connection = mpdclient_get_connection(c);
 313         if (connection == NULL)
 314                 return -1;
 315
 316         filename_utf8 = locale_to_utf8(filename);
 317         if (!mpd_run_save(connection, filename_utf8)) {
 318                 if (mpd_connection_get_error(connection) == MPD_ERROR_SERVER &&
 319                     mpd_connection_get_server_error(connection) == MPD_SERVER_ERROR_EXIST &&
 320                     mpd_connection_clear_error(connection)) {
 321                         char *buf;
 322                         int key;
 323
 324                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 325                                               filename, YES, NO);
 326                         key = tolower(screen_getch(buf));
 327                         g_free(buf);
 328
 329                         if (key != YES[0]) {
 330                                 g_free(filename_utf8);
 331                                 g_free(filename);
 332                                 screen_status_printf(_("Aborted"));
 333                                 return -1;
 334                         }
 335
 336                         if (!mpd_run_rm(connection, filename_utf8) ||
 337                             !mpd_run_save(connection, filename_utf8)) {
 338                                 mpdclient_handle_error(c);
 339                                 g_free(filename_utf8);
 340                                 g_free(filename);
 341                                 return -1;
 342                         }
 343                 } else {
 344                         mpdclient_handle_error(c);
 345                         g_free(filename_utf8);
 346                         g_free(filename);
 347                         return -1;
 348                 }
 349         }
 350
 351         c->events |= MPD_IDLE_STORED_PLAYLIST;
 352
 353         g_free(filename_utf8);
 354
 355         /* success */
 356         screen_status_printf(_("Saved %s"), filename);
 357         g_free(filename);
 358         return 0;
 359 }
 360
 361 #ifndef NCMPC_MINI
 362 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 363                     GList **list, struct mpdclient *c)
 364 {
 365         g_completion_remove_items(gcmp, *list);
 366         *list = string_list_remove(*list, dir);
 367         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 368         g_completion_add_items(gcmp, *list);
 369         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 370 }
 371
 372 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 373 {
 374         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 375         GList **dir_list = tmp->dir_list;
 376         GList **list = tmp->list;
 377         struct mpdclient *c = tmp->c;
 378
 379         if (*list == NULL) {
 380                 /* create initial list */
 381                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 382                 g_completion_add_items(gcmp, *list);
 383         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 384                    string_list_find(*dir_list, line) == NULL) {
 385                 /* add directory content to list */
 386                 add_dir(gcmp, line, dir_list, list, c);
 387         }
 388 }
 389
 390 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 391                                    GList *items, void *data)
 392 {
 393         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 394         GList **dir_list = tmp->dir_list;
 395         GList **list = tmp->list;
 396         struct mpdclient *c = tmp->c;
 397
 398         if (g_list_length(items) >= 1)
 399                 screen_display_completion_list(items);
 400
 401         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 402             string_list_find(*dir_list, line) == NULL) {
 403                 /* add directory content to list */
 404                 add_dir(gcmp, line, dir_list, list, c);
 405         }
 406 }
 407 #endif
 408
 409 static int
 410 handle_add_to_playlist(struct mpdclient *c)
 411 {
 412         gchar *path;
 413 #ifndef NCMPC_MINI
 414         GCompletion *gcmp;
 415         GList *list = NULL;
 416         GList *dir_list = NULL;
 417         completion_callback_data_t data;
 418
 419         /* initialize completion support */
 420         gcmp = g_completion_new(NULL);
 421         g_completion_set_compare(gcmp, completion_strncmp);
 422         data.list = &list;
 423         data.dir_list = &dir_list;
 424         data.c = c;
 425         wrln_completion_callback_data = &data;
 426         wrln_pre_completion_callback = add_pre_completion_cb;
 427         wrln_post_completion_callback = add_post_completion_cb;
 428 #endif
 429
 430         /* get path */
 431         path = screen_readln(_("Add"),
 432                              NULL,
 433                              NULL,
 434 #ifdef NCMPC_MINI
 435                              NULL
 436 #else
 437                              gcmp
 438 #endif
 439                              );
 440
 441         /* destroy completion data */
 442 #ifndef NCMPC_MINI
 443         wrln_completion_callback_data = NULL;
 444         wrln_pre_completion_callback = NULL;
 445         wrln_post_completion_callback = NULL;
 446         g_completion_free(gcmp);
 447         string_list_free(list);
 448         string_list_free(dir_list);
 449 #endif
 450
 451         /* add the path to the playlist */
 452         if (path != NULL) {
 453                 char *path_utf8 = locale_to_utf8(path);
 454                 mpdclient_cmd_add_path(c, path_utf8);
 455                 g_free(path_utf8);
 456         }
 457
 458         g_free(path);
 459         return 0;
 460 }
 461
 462 static void
 463 screen_queue_init(WINDOW *w, int cols, int rows)
 464 {
 465         lw = list_window_init(w, cols, rows);
 466 }
 467
 468 static gboolean
 469 timer_hide_cursor(gpointer data)
 470 {
 471         struct mpdclient *c = data;
 472
 473         assert(options.hide_cursor > 0);
 474         assert(timer_hide_cursor_id != 0);
 475
 476         timer_hide_cursor_id = 0;
 477
 478         /* hide the cursor when mpd is playing and the user is inactive */
 479
 480         if (c->status != NULL &&
 481             mpd_status_get_state(c->status) == MPD_STATE_PLAY) {
 482                 lw->hide_cursor = true;
 483                 screen_queue_repaint();
 484         } else
 485                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 486                                                      timer_hide_cursor, c);
 487
 488         return FALSE;
 489 }
 490
 491 static void
 492 screen_queue_open(struct mpdclient *c)
 493 {
 494         playlist = &c->playlist;
 495
 496         assert(timer_hide_cursor_id == 0);
 497         if (options.hide_cursor > 0) {
 498                 lw->hide_cursor = false;
 499                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 500                                                      timer_hide_cursor, c);
 501         }
 502
 503         screen_queue_restore_selection();
 504 }
 505
 506 static void
 507 screen_queue_close(void)
 508 {
 509         if (timer_hide_cursor_id != 0) {
 510                 g_source_remove(timer_hide_cursor_id);
 511                 timer_hide_cursor_id = 0;
 512         }
 513 }
 514
 515 static void
 516 screen_queue_resize(int cols, int rows)
 517 {
 518         list_window_resize(lw, cols, rows);
 519 }
 520
 521
 522 static void
 523 screen_queue_exit(void)
 524 {
 525         list_window_free(lw);
 526 }
 527
 528 static const char *
 529 screen_queue_title(char *str, size_t size)
 530 {
 531         if (options.host == NULL)
 532                 return _("Playlist");
 533
 534         g_snprintf(str, size, _("Playlist on %s"), options.host);
 535         return str;
 536 }
 537
 538 static void
 539 screen_queue_paint_callback(WINDOW *w, unsigned i,
 540                             unsigned y, unsigned width,
 541                             bool selected, G_GNUC_UNUSED void *data)
 542 {
 543         const struct mpd_song *song;
 544
 545         assert(playlist != NULL);
 546         assert(i < playlist_length(playlist));
 547
 548         song = playlist_get(playlist, i);
 549
 550         paint_song_row(w, y, width, selected,
 551                        (int)mpd_song_get_id(song) == current_song_id,
 552                        song);
 553 }
 554
 555 static void
 556 screen_queue_paint(void)
 557 {
 558         list_window_paint2(lw, screen_queue_paint_callback, NULL);
 559 }
 560
 561 G_GNUC_PURE
 562 static int
 563 get_current_song_id(const struct mpd_status *status)
 564 {
 565         return status != NULL &&
 566                 (mpd_status_get_state(status) == MPD_STATE_PLAY ||
 567                  mpd_status_get_state(status) == MPD_STATE_PAUSE)
 568                 ? (int)mpd_status_get_song_id(status)
 569                 : -1;
 570 }
 571
 572 static void
 573 screen_queue_update(struct mpdclient *c)
 574 {
 575         if (c->events & MPD_IDLE_PLAYLIST)
 576                 screen_queue_restore_selection();
 577
 578         if ((c->events & MPD_IDLE_PLAYER) != 0 &&
 579             get_current_song_id(c->status) != current_song_id) {
 580                 current_song_id = get_current_song_id(c->status);
 581
 582                 /* center the cursor */
 583                 if (options.auto_center && current_song_id != -1 && ! lw->range_selection)
 584                         center_playing_item(c, false);
 585
 586                 screen_queue_repaint();
 587         } else if (c->events & MPD_IDLE_PLAYLIST) {
 588                 /* the playlist has changed, we must paint the new
 589                    version */
 590                 screen_queue_repaint();
 591         }
 592 }
 593
 594 #ifdef HAVE_GETMOUSE
 595 static bool
 596 handle_mouse_event(struct mpdclient *c)
 597 {
 598         int row;
 599         unsigned long bstate;
 600         unsigned old_selected;
 601
 602         if (screen_get_mouse_event(c, &bstate, &row) ||
 603             list_window_mouse(lw, bstate, row)) {
 604                 screen_queue_repaint();
 605                 return true;
 606         }
 607
 608         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 609                 /* stop */
 610                 screen_cmd(c, CMD_STOP);
 611                 return true;
 612         }
 613
 614         old_selected = lw->selected;
 615         list_window_set_cursor(lw, lw->start + row);
 616
 617         if (bstate & BUTTON1_CLICKED) {
 618                 /* play */
 619                 if (lw->selected < playlist_length(playlist))
 620                         mpdclient_cmd_play(c, lw->start + row);
 621         } else if (bstate & BUTTON3_CLICKED) {
 622                 /* delete */
 623                 if (lw->selected == old_selected)
 624                         mpdclient_cmd_delete(c, lw->selected);
 625
 626                 list_window_set_length(lw, playlist_length(playlist));
 627         }
 628
 629         screen_queue_save_selection();
 630         screen_queue_repaint();
 631
 632         return true;
 633 }
 634 #endif
 635
 636 static bool
 637 screen_queue_cmd(struct mpdclient *c, command_t cmd)
 638 {
 639         struct mpd_connection *connection;
 640         static command_t cached_cmd = CMD_NONE;
 641         command_t prev_cmd = cached_cmd;
 642         struct list_window_range range;
 643
 644         cached_cmd = cmd;
 645
 646         lw->hide_cursor = false;
 647
 648         if (options.hide_cursor > 0) {
 649                 if (timer_hide_cursor_id != 0)
 650                         g_source_remove(timer_hide_cursor_id);
 651                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 652                                                      timer_hide_cursor, c);
 653         }
 654
 655         if (list_window_cmd(lw, cmd)) {
 656                 screen_queue_save_selection();
 657                 screen_queue_repaint();
 658                 return true;
 659         }
 660
 661         switch(cmd) {
 662         case CMD_SCREEN_UPDATE:
 663                 center_playing_item(c, prev_cmd == CMD_SCREEN_UPDATE);
 664                 screen_queue_repaint();
 665                 return false;
 666         case CMD_SELECT_PLAYING:
 667                 list_window_set_cursor(lw, playlist_get_index(&c->playlist,
 668                                                               c->song));
 669                 screen_queue_save_selection();
 670                 screen_queue_repaint();
 671                 return true;
 672
 673         case CMD_LIST_FIND:
 674         case CMD_LIST_RFIND:
 675         case CMD_LIST_FIND_NEXT:
 676         case CMD_LIST_RFIND_NEXT:
 677                 screen_find(lw, cmd, screen_queue_lw_callback, NULL);
 678                 screen_queue_save_selection();
 679                 screen_queue_repaint();
 680                 return true;
 681         case CMD_LIST_JUMP:
 682                 screen_jump(lw, screen_queue_lw_callback, NULL, NULL);
 683                 screen_queue_save_selection();
 684                 screen_queue_repaint();
 685                 return true;
 686
 687 #ifdef HAVE_GETMOUSE
 688         case CMD_MOUSE_EVENT:
 689                 return handle_mouse_event(c);
 690 #endif
 691
 692 #ifdef ENABLE_SONG_SCREEN
 693         case CMD_SCREEN_SONG:
 694                 if (screen_queue_selected_song() != NULL) {
 695                         screen_song_switch(c, screen_queue_selected_song());
 696                         return true;
 697                 }
 698
 699                 break;
 700 #endif
 701
 702 #ifdef ENABLE_LYRICS_SCREEN
 703         case CMD_SCREEN_LYRICS:
 704                 if (lw->selected < playlist_length(&c->playlist)) {
 705                         struct mpd_song *selected = playlist_get(&c->playlist, lw->selected);
 706                         bool follow = false;
 707
 708                         if (c->song && selected &&
 709                             !strcmp(mpd_song_get_uri(selected),
 710                                     mpd_song_get_uri(c->song)))
 711                                 follow = true;
 712
 713                         screen_lyrics_switch(c, selected, follow);
 714                         return true;
 715                 }
 716
 717                 break;
 718 #endif
 719         case CMD_SCREEN_SWAP:
 720                 screen_swap(c, playlist_get(&c->playlist, lw->selected));
 721                 return true;
 722
 723         default:
 724                 break;
 725         }
 726
 727         if (!mpdclient_is_connected(c))
 728                 return false;
 729
 730         switch(cmd) {
 731         case CMD_PLAY:
 732                 mpdclient_cmd_play(c, lw->selected);
 733                 return true;
 734
 735         case CMD_DELETE:
 736                 list_window_get_range(lw, &range);
 737                 mpdclient_cmd_delete_range(c, range.start, range.end);
 738
 739                 list_window_set_cursor(lw, range.start);
 740                 return true;
 741
 742         case CMD_SAVE_PLAYLIST:
 743                 playlist_save(c, NULL, NULL);
 744                 return true;
 745
 746         case CMD_ADD:
 747                 handle_add_to_playlist(c);
 748                 return true;
 749
 750         case CMD_SHUFFLE:
 751                 list_window_get_range(lw, &range);
 752                 if (range.end < range.start + 1)
 753                         /* No range selection, shuffle all list. */
 754                         break;
 755
 756                 connection = mpdclient_get_connection(c);
 757                 if (connection == NULL)
 758                         return true;
 759
 760                 if (mpd_run_shuffle_range(connection, range.start, range.end))
 761                         screen_status_message(_("Shuffled playlist"));
 762                 else
 763                         mpdclient_handle_error(c);
 764                 return true;
 765
 766         case CMD_LIST_MOVE_UP:
 767                 list_window_get_range(lw, &range);
 768                 if (range.start == 0 || range.end <= range.start)
 769                         return false;
 770
 771                 for (unsigned i = range.start; i < range.end; ++i)
 772                         mpdclient_cmd_move(c, i, i - 1);
 773
 774                 lw->selected--;
 775                 lw->range_base--;
 776
 777                 screen_queue_save_selection();
 778                 return true;
 779
 780         case CMD_LIST_MOVE_DOWN:
 781                 list_window_get_range(lw, &range);
 782                 if (range.end >= playlist_length(&c->playlist))
 783                         return false;
 784
 785                 for (int i = range.end - 1; i >= (int)range.start; --i)
 786                         mpdclient_cmd_move(c, i, i + 1);
 787
 788                 lw->selected++;
 789                 lw->range_base++;
 790
 791                 screen_queue_save_selection();
 792                 return true;
 793
 794         case CMD_LOCATE:
 795                 if (screen_queue_selected_song() != NULL) {
 796                         screen_file_goto_song(c, screen_queue_selected_song());
 797                         return true;
 798                 }
 799
 800                 break;
 801
 802         default:
 803                 break;
 804         }
 805
 806         return false;
 807 }
 808
 809 const struct screen_functions screen_queue = {
 810         .init = screen_queue_init,
 811         .exit = screen_queue_exit,
 812         .open = screen_queue_open,
 813         .close = screen_queue_close,
 814         .resize = screen_queue_resize,
 815         .paint = screen_queue_paint,
 816         .update = screen_queue_update,
 817         .cmd = screen_queue_cmd,
 818         .get_title = screen_queue_title,
 819 };