apps/root_menu.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Jonathan Gordon
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <stdbool.h>
  24 #include "string-extra.h"
  25 #include "config.h"
  26 #include "appevents.h"
  27 #include "menu.h"
  28 #include "root_menu.h"
  29 #include "lang.h"
  30 #include "settings.h"
  31 #include "screens.h"
  32 #include "kernel.h"
  33 #include "debug.h"
  34 #include "misc.h"
  35 #include "rolo.h"
  36 #include "powermgmt.h"
  37 #include "power.h"
  38 #include "talk.h"
  39 #include "audio.h"
  40
  41 #ifdef HAVE_HOTSWAP
  42 #include "storage.h"
  43 #include "dir.h"
  44 #endif
  45 /* gui api */
  46 #include "list.h"
  47 #include "splash.h"
  48 #include "action.h"
  49 #include "yesno.h"
  50 #include "viewport.h"
  51
  52 #include "tree.h"
  53 #if CONFIG_TUNER
  54 #include "radio.h"
  55 #endif
  56 #ifdef HAVE_RECORDING
  57 #include "recording.h"
  58 #endif
  59 #include "wps.h"
  60 #include "bookmark.h"
  61 #include "playlist.h"
  62 #include "playlist_viewer.h"
  63 #include "menus/exported_menus.h"
  64 #ifdef HAVE_RTC_ALARM
  65 #include "rtc.h"
  66 #endif
  67 #ifdef HAVE_TAGCACHE
  68 #include "tagcache.h"
  69 #endif
  70 #include "language.h"
  71 #include "plugin.h"
  72
  73 struct root_items {
  74     int (*function)(void* param);
  75     void* param;
  76     const struct menu_item_ex *context_menu;
  77 };
  78 static int next_screen = GO_TO_ROOT; /* holding info about the upcoming screen
  79                                         * which is the current screen for the
  80                                         * rest of the code after load_screen
  81                                         * is called */
  82 static int last_screen = GO_TO_ROOT; /* unfortunatly needed so we can resume
  83                                         or goto current track based on previous
  84                                         screen */
  85
  86
  87 static char current_track_path[MAX_PATH];
  88 static void rootmenu_track_changed_callback(void* param)
  89 {
  90     struct mp3entry *id3 = (struct mp3entry *)param;
  91     strlcpy(current_track_path, id3->path, MAX_PATH);
  92 }
  93 static int browser(void* param)
  94 {
  95     int ret_val;
  96 #ifdef HAVE_TAGCACHE
  97     struct tree_context* tc = tree_get_context();
  98 #endif
  99     struct browse_context browse;
 100     int filter = SHOW_SUPPORTED;
 101     char folder[MAX_PATH] = "/";
 102     /* stuff needed to remember position in file browser */
 103     static char last_folder[MAX_PATH] = "/";
 104     /* and stuff for the database browser */
 105 #ifdef HAVE_TAGCACHE
 106     static int last_db_dirlevel = 0, last_db_selection = 0;
 107 #endif
 108
 109     switch ((intptr_t)param)
 110     {
 111         case GO_TO_FILEBROWSER:
 112             filter = global_settings.dirfilter;
 113             if (global_settings.browse_current &&
 114                     last_screen == GO_TO_WPS &&
 115                     current_track_path[0])
 116             {
 117                 strcpy(folder, current_track_path);
 118             }
 119             else if (!strcmp(last_folder, "/"))
 120             {
 121                 strcpy(folder, global_settings.start_directory);
 122             }
 123             else
 124             {
 125 #ifdef HAVE_HOTSWAP
 126                 bool in_hotswap = false;
 127                 /* handle entering an ejected drive */
 128                 int i;
 129                 for (i = 0; i < NUM_VOLUMES; i++)
 130                 {
 131                     char vol_string[VOL_ENUM_POS + 8];
 132                     if (!storage_removable(i))
 133                         continue;
 134                     /* VOL_NAMES contains a %d */
 135                     snprintf(vol_string, sizeof(vol_string), "/"VOL_NAMES, i);
 136                     /* test whether we would browse the external card */
 137                     if (!storage_present(i) &&
 138                             (strstr(last_folder, vol_string)
 139 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 140                                                                 || (i == 0)
 141 #endif
 142                                                                 ))
 143                     {   /* leave folder as "/" to avoid crash when trying
 144                          * to access an ejected drive */
 145                         strcpy(folder, "/");
 146                         in_hotswap = true;
 147                         break;
 148                     }
 149                 }
 150                 if (!in_hotswap)
 151 #endif
 152                     strcpy(folder, last_folder);
 153             }
 154         break;
 155 #ifdef HAVE_TAGCACHE
 156         case GO_TO_DBBROWSER:
 157             if (!tagcache_is_usable())
 158             {
 159                 bool reinit_attempted = false;
 160
 161                 /* Now display progress until it's ready or the user exits */
 162                 while(!tagcache_is_usable())
 163                 {
 164                     struct tagcache_stat *stat = tagcache_get_stat();
 165
 166                     /* Allow user to exit */
 167                     if (action_userabort(HZ/2))
 168                         break;
 169
 170                     /* Maybe just needs to reboot due to delayed commit */
 171                     if (stat->commit_delayed)
 172                     {
 173                         splash(HZ*2, ID2P(LANG_PLEASE_REBOOT));
 174                         break;
 175                     }
 176
 177                     /* Check if ready status is known */
 178                     if (!stat->readyvalid)
 179                     {
 180                         splash(0, str(LANG_TAGCACHE_BUSY));
 181                         continue;
 182                     }
 183
 184                     /* Re-init if required */
 185                     if (!reinit_attempted && !stat->ready &&
 186                         stat->processed_entries == 0 && stat->commit_step == 0)
 187                     {
 188                         /* Prompt the user */
 189                         reinit_attempted = true;
 190                         static const char *lines[]={
 191                             ID2P(LANG_TAGCACHE_BUSY), ID2P(LANG_TAGCACHE_FORCE_UPDATE)};
 192                         static const struct text_message message={lines, 2};
 193                         if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_NO)
 194                             break;
 195                         int i;
 196                         FOR_NB_SCREENS(i)
 197                             screens[i].clear_display();
 198
 199                         /* Start initialisation */
 200                         tagcache_rebuild();
 201                     }
 202
 203                     /* Display building progress */
 204                     static long talked_tick = 0;
 205                     if(global_settings.talk_menu &&
 206                        (talked_tick == 0
 207                         || TIME_AFTER(current_tick, talked_tick+7*HZ)))
 208                     {
 209                         talked_tick = current_tick;
 210                         if (stat->commit_step > 0)
 211                         {
 212                             talk_id(LANG_TAGCACHE_INIT, false);
 213                             talk_number(stat->commit_step, true);
 214                             talk_id(VOICE_OF, true);
 215                             talk_number(tagcache_get_max_commit_step(), true);
 216                         } else if(stat->processed_entries)
 217                         {
 218                             talk_number(stat->processed_entries, false);
 219                             talk_id(LANG_BUILDING_DATABASE, true);
 220                         }
 221                     }
 222                     if (stat->commit_step > 0)
 223                     {
 224                         if (lang_is_rtl())
 225                         {
 226                             splashf(0, "[%d/%d] %s", stat->commit_step,
 227                                 tagcache_get_max_commit_step(),
 228                                 str(LANG_TAGCACHE_INIT));
 229                         }
 230                         else
 231                         {
 232                             splashf(0, "%s [%d/%d]", str(LANG_TAGCACHE_INIT),
 233                                 stat->commit_step,
 234                                 tagcache_get_max_commit_step());
 235                         }
 236                     }
 237                     else
 238                     {
 239                         splashf(0, str(LANG_BUILDING_DATABASE),
 240                                    stat->processed_entries);
 241                     }
 242                 }
 243             }
 244             if (!tagcache_is_usable())
 245                 return GO_TO_PREVIOUS;
 246             filter = SHOW_ID3DB;
 247             tc->dirlevel = last_db_dirlevel;
 248             tc->selected_item = last_db_selection;
 249         break;
 250 #endif
 251     }
 252
 253     browse_context_init(&browse, filter, 0, NULL, NOICON, folder, NULL);
 254     ret_val = rockbox_browse(&browse);
 255     switch ((intptr_t)param)
 256     {
 257         case GO_TO_FILEBROWSER:
 258             if (!get_current_file(last_folder, MAX_PATH) ||
 259                 (!strchr(&last_folder[1], '/') &&
 260                  global_settings.start_directory[1] != '\0'))
 261             {
 262                 last_folder[0] = '/';
 263                 last_folder[1] = '\0';
 264             }
 265         break;
 266 #ifdef HAVE_TAGCACHE
 267         case GO_TO_DBBROWSER:
 268             last_db_dirlevel = tc->dirlevel;
 269             last_db_selection = tc->selected_item;
 270         break;
 271 #endif
 272     }
 273     return ret_val;
 274 }
 275
 276 #ifdef HAVE_RECORDING
 277 static int recscrn(void* param)
 278 {
 279     (void)param;
 280     recording_screen(false);
 281     return GO_TO_ROOT;
 282 }
 283 #endif
 284 static int wpsscrn(void* param)
 285 {
 286     int ret_val = GO_TO_PREVIOUS;
 287     (void)param;
 288     if (audio_status())
 289     {
 290         talk_shutup();
 291         ret_val = gui_wps_show();
 292     }
 293     else if ( global_status.resume_index != -1 )
 294     {
 295         DEBUGF("Resume index %X offset %lX\n",
 296                global_status.resume_index,
 297                (unsigned long)global_status.resume_offset);
 298         if (playlist_resume() != -1)
 299         {
 300             playlist_start(global_status.resume_index,
 301                 global_status.resume_offset);
 302             ret_val = gui_wps_show();
 303         }
 304     }
 305     else
 306     {
 307         splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 308     }
 309     return ret_val;
 310 }
 311 #if CONFIG_TUNER
 312 static int radio(void* param)
 313 {
 314     (void)param;
 315     radio_screen();
 316     return GO_TO_ROOT;
 317 }
 318 #endif
 319
 320 static int miscscrn(void * param)
 321 {
 322     const struct menu_item_ex *menu = (const struct menu_item_ex*)param;
 323     int result = do_menu(menu, NULL, NULL, false);
 324     switch (result)
 325     {
 326         case GO_TO_PLAYLIST_VIEWER:
 327         case GO_TO_WPS:
 328             return result;
 329         default:
 330             return GO_TO_ROOT;
 331     }
 332 }
 333
 334 static int playlist_view(void * param)
 335 {
 336     (void)param;
 337     switch (playlist_viewer())
 338     {
 339         case PLAYLIST_VIEWER_MAINMENU:
 340         case PLAYLIST_VIEWER_USB:
 341             return GO_TO_ROOT;
 342         case PLAYLIST_VIEWER_OK:
 343             return GO_TO_PREVIOUS;
 344     }
 345     return GO_TO_PREVIOUS;
 346 }
 347
 348 static int load_bmarks(void* param)
 349 {
 350     (void)param;
 351     if(bookmark_mrb_load())
 352         return GO_TO_WPS;
 353     return GO_TO_PREVIOUS;
 354 }
 355
 356 int time_screen(void* ignored);
 357
 358 /* These are all static const'd from apps/menus/ *.c
 359    so little hack so we can use them */
 360 extern struct menu_item_ex
 361         file_menu,
 362 #ifdef HAVE_TAGCACHE
 363         tagcache_menu,
 364 #endif
 365         main_menu_,
 366         manage_settings,
 367         plugin_menu,
 368         playlist_options,
 369         info_menu,
 370         system_menu;
 371 static const struct root_items items[] = {
 372     [GO_TO_FILEBROWSER] =   { browser, (void*)GO_TO_FILEBROWSER, &file_menu},
 373 #ifdef HAVE_TAGCACHE
 374     [GO_TO_DBBROWSER] =     { browser, (void*)GO_TO_DBBROWSER, &tagcache_menu },
 375 #endif
 376     [GO_TO_WPS] =           { wpsscrn, NULL, &playback_settings },
 377     [GO_TO_MAINMENU] =      { miscscrn, (struct menu_item_ex*)&main_menu_,
 378                                                             &manage_settings },
 379
 380 #ifdef HAVE_RECORDING
 381     [GO_TO_RECSCREEN] =     {  recscrn, NULL, &recording_settings_menu },
 382 #endif
 383
 384 #if CONFIG_TUNER
 385     [GO_TO_FM] =            { radio, NULL, &radio_settings_menu },
 386 #endif
 387
 388     [GO_TO_RECENTBMARKS] =  { load_bmarks, NULL, &bookmark_settings_menu },
 389     [GO_TO_BROWSEPLUGINS] = { miscscrn, &plugin_menu, NULL },
 390     [GO_TO_PLAYLISTS_SCREEN] = { miscscrn, &playlist_options,
 391                                                         &playlist_settings },
 392     [GO_TO_PLAYLIST_VIEWER] = { playlist_view, NULL, NULL },
 393     [GO_TO_SYSTEM_SCREEN] = { miscscrn, &info_menu, &system_menu },
 394
 395 };
 396 static const int nb_items = sizeof(items)/sizeof(*items);
 397
 398 static int item_callback(int action, const struct menu_item_ex *this_item) ;
 399
 400 MENUITEM_RETURNVALUE(file_browser, ID2P(LANG_DIR_BROWSER), GO_TO_FILEBROWSER,
 401                         NULL, Icon_file_view_menu);
 402 #ifdef HAVE_TAGCACHE
 403 MENUITEM_RETURNVALUE(db_browser, ID2P(LANG_TAGCACHE), GO_TO_DBBROWSER,
 404                         NULL, Icon_Audio);
 405 #endif
 406 MENUITEM_RETURNVALUE(rocks_browser, ID2P(LANG_PLUGINS), GO_TO_BROWSEPLUGINS,
 407                         NULL, Icon_Plugin);
 408 static char *get_wps_item_name(int selected_item, void * data, char *buffer)
 409 {
 410     (void)selected_item; (void)data; (void)buffer;
 411     if (audio_status())
 412         return ID2P(LANG_NOW_PLAYING);
 413     return ID2P(LANG_RESUME_PLAYBACK);
 414 }
 415 MENUITEM_RETURNVALUE_DYNTEXT(wps_item, GO_TO_WPS, NULL, get_wps_item_name,
 416                                 NULL, NULL, Icon_Playback_menu);
 417 #ifdef HAVE_RECORDING
 418 MENUITEM_RETURNVALUE(rec, ID2P(LANG_RECORDING), GO_TO_RECSCREEN,
 419                         NULL, Icon_Recording);
 420 #endif
 421 #if CONFIG_TUNER
 422 MENUITEM_RETURNVALUE(fm, ID2P(LANG_FM_RADIO), GO_TO_FM,
 423                         item_callback, Icon_Radio_screen);
 424 #endif
 425 MENUITEM_RETURNVALUE(menu_, ID2P(LANG_SETTINGS), GO_TO_MAINMENU,
 426                         NULL, Icon_Submenu_Entered);
 427 MENUITEM_RETURNVALUE(bookmarks, ID2P(LANG_BOOKMARK_MENU_RECENT_BOOKMARKS),
 428                         GO_TO_RECENTBMARKS,  item_callback,
 429                         Icon_Bookmark);
 430 MENUITEM_RETURNVALUE(playlists, ID2P(LANG_PLAYLISTS), GO_TO_PLAYLISTS_SCREEN,
 431                      NULL, Icon_Playlist);
 432 MENUITEM_RETURNVALUE(system_menu_, ID2P(LANG_SYSTEM), GO_TO_SYSTEM_SCREEN,
 433                      NULL, Icon_System_menu);
 434
 435 #if CONFIG_KEYPAD == PLAYER_PAD
 436 static int do_shutdown(void)
 437 {
 438 #if CONFIG_CHARGING
 439     if (charger_inserted())
 440         charging_splash();
 441     else
 442 #endif
 443         sys_poweroff();
 444     return 0;
 445 }
 446 MENUITEM_FUNCTION(do_shutdown_item, 0, ID2P(LANG_SHUTDOWN),
 447                   do_shutdown, NULL, NULL, Icon_NOICON);
 448 #endif
 449 MAKE_MENU(root_menu_, ID2P(LANG_ROCKBOX_TITLE),
 450             item_callback, Icon_Rockbox,
 451             &bookmarks, &file_browser,
 452 #ifdef HAVE_TAGCACHE
 453             &db_browser,
 454 #endif
 455             &wps_item, &menu_,
 456 #ifdef HAVE_RECORDING
 457             &rec,
 458 #endif
 459 #if CONFIG_TUNER
 460             &fm,
 461 #endif
 462             &playlists, &rocks_browser,  &system_menu_
 463
 464 #if CONFIG_KEYPAD == PLAYER_PAD
 465             ,&do_shutdown_item
 466 #endif
 467         );
 468
 469 static int item_callback(int action, const struct menu_item_ex *this_item)
 470 {
 471     switch (action)
 472     {
 473         case ACTION_TREE_STOP:
 474             return ACTION_REDRAW;
 475         case ACTION_REQUEST_MENUITEM:
 476 #if CONFIG_TUNER
 477             if (this_item == &fm)
 478             {
 479                 if (radio_hardware_present() == 0)
 480                     return ACTION_EXIT_MENUITEM;
 481             }
 482             else
 483 #endif
 484                 if (this_item == &bookmarks)
 485             {
 486                 if (global_settings.usemrb == 0)
 487                     return ACTION_EXIT_MENUITEM;
 488             }
 489         break;
 490     }
 491     return action;
 492 }
 493 static int get_selection(int last_screen)
 494 {
 495     int i;
 496     int len = ARRAYLEN(root_menu__);
 497     for(i=0; i < len; i++)
 498     {
 499         if (((root_menu__[i]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE) &&
 500             (root_menu__[i]->value == last_screen))
 501         {
 502             return i;
 503         }
 504     }
 505     return 0;
 506 }
 507
 508 static inline int load_screen(int screen)
 509 {
 510     /* set the global_status.last_screen before entering,
 511         if we dont we will always return to the wrong screen on boot */
 512     int old_previous = last_screen;
 513     int ret_val;
 514     if (screen <= GO_TO_ROOT)
 515         return screen;
 516     if (screen == old_previous)
 517         old_previous = GO_TO_ROOT;
 518     global_status.last_screen = (char)screen;
 519     status_save();
 520     ret_val = items[screen].function(items[screen].param);
 521     last_screen = screen;
 522     if (ret_val == GO_TO_PREVIOUS)
 523         last_screen = old_previous;
 524     return ret_val;
 525 }
 526 static int load_context_screen(int selection)
 527 {
 528     const struct menu_item_ex *context_menu = NULL;
 529     if ((root_menu__[selection]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE)
 530     {
 531         int item = root_menu__[selection]->value;
 532         context_menu = items[item].context_menu;
 533     }
 534     /* special cases */
 535     else if (root_menu__[selection] == &info_menu)
 536     {
 537         context_menu = &system_menu;
 538     }
 539
 540     if (context_menu)
 541         return do_menu(context_menu, NULL, NULL, false);
 542     else
 543         return GO_TO_PREVIOUS;
 544 }
 545
 546 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 547 static int load_plugin_screen(char *plug_path)
 548 {
 549     int ret_val;
 550     int old_previous = last_screen;
 551     last_screen = next_screen;
 552     global_status.last_screen = (char)next_screen;
 553     status_save();
 554
 555     switch (plugin_load(plug_path, NULL))
 556     {
 557     case PLUGIN_GOTO_WPS:
 558         ret_val = GO_TO_WPS;
 559         break;
 560     case PLUGIN_OK:
 561         ret_val = audio_status() ? GO_TO_PREVIOUS : GO_TO_ROOT;
 562         break;
 563     default:
 564         ret_val = GO_TO_PREVIOUS;
 565         break;
 566     }
 567
 568     if (ret_val == GO_TO_PREVIOUS)
 569         last_screen = (old_previous == next_screen) ? GO_TO_ROOT : old_previous;
 570     return ret_val;
 571 }
 572 #endif
 573
 574 static int previous_music = GO_TO_WPS;
 575
 576 void previous_music_is_wps(void)
 577 {
 578     previous_music = GO_TO_WPS;
 579 }
 580
 581 int current_screen(void)
 582 {
 583     return next_screen;
 584 }
 585
 586 void root_menu(void)
 587 {
 588     int previous_browser = GO_TO_FILEBROWSER;
 589     int selected = 0;
 590
 591     if (global_settings.start_in_screen == 0)
 592         next_screen = (int)global_status.last_screen;
 593     else next_screen = global_settings.start_in_screen - 2;
 594     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, rootmenu_track_changed_callback);
 595 #ifdef HAVE_RTC_ALARM
 596     if ( rtc_check_alarm_started(true) )
 597     {
 598         rtc_enable_alarm(false);
 599         next_screen = GO_TO_WPS;
 600 #if CONFIG_TUNER
 601         if (global_settings.alarm_wake_up_screen == ALARM_START_FM)
 602             next_screen = GO_TO_FM;
 603 #endif
 604 #ifdef HAVE_RECORDING
 605         if (global_settings.alarm_wake_up_screen == ALARM_START_REC)
 606         {
 607             recording_start_automatic = true;
 608             next_screen = GO_TO_RECSCREEN;
 609         }
 610 #endif
 611     }
 612 #endif /* HAVE_RTC_ALARM */
 613
 614 #ifdef HAVE_HEADPHONE_DETECTION
 615     if (next_screen == GO_TO_WPS &&
 616         (global_settings.unplug_autoresume && !headphones_inserted() ))
 617             next_screen = GO_TO_ROOT;
 618 #endif
 619
 620     while (true)
 621     {
 622         switch (next_screen)
 623         {
 624             case MENU_ATTACHED_USB:
 625             case MENU_SELECTED_EXIT:
 626                 /* fall through */
 627             case GO_TO_ROOT:
 628                 if (last_screen != GO_TO_ROOT)
 629                     selected = get_selection(last_screen);
 630 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
 631                 /* When we are in the main menu we want the hardware BACK
 632                  * button to be handled by Android instead of rockbox */
 633                 android_ignore_back_button(true);
 634 #endif
 635                 next_screen = do_menu(&root_menu_, &selected, NULL, false);
 636 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
 637                 android_ignore_back_button(false);
 638 #endif
 639                 if (next_screen != GO_TO_PREVIOUS)
 640                     last_screen = GO_TO_ROOT;
 641                 break;
 642
 643             case GO_TO_PREVIOUS:
 644                 next_screen = last_screen;
 645                 break;
 646
 647             case GO_TO_PREVIOUS_BROWSER:
 648                 next_screen = previous_browser;
 649                 break;
 650
 651             case GO_TO_PREVIOUS_MUSIC:
 652                 next_screen = previous_music;
 653                 break;
 654             case GO_TO_ROOTITEM_CONTEXT:
 655                 next_screen = load_context_screen(selected);
 656                 break;
 657 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 658             case GO_TO_PICTUREFLOW:
 659                 while ( !tagcache_is_usable() )
 660                 {
 661                     splash(0, str(LANG_TAGCACHE_BUSY));
 662                     if ( action_userabort(HZ/5) )
 663                         break;
 664                 }
 665                 {
 666                     char pf_path[MAX_PATH];
 667                     snprintf(pf_path, sizeof(pf_path),
 668                             "%s/pictureflow.rock",
 669                             PLUGIN_DEMOS_DIR);
 670                     next_screen = load_plugin_screen(pf_path);
 671                 }
 672                 previous_browser = GO_TO_PICTUREFLOW;
 673                 break;
 674 #endif
 675             default:
 676                 if (next_screen == GO_TO_FILEBROWSER
 677 #ifdef HAVE_TAGCACHE
 678                     || next_screen == GO_TO_DBBROWSER
 679 #endif
 680                    )
 681                     previous_browser = next_screen;
 682                 if (next_screen == GO_TO_WPS
 683 #if CONFIG_TUNER
 684                     || next_screen == GO_TO_FM
 685 #endif
 686                    )
 687                     previous_music = next_screen;
 688                 next_screen = load_screen(next_screen);
 689                 break;
 690         } /* switch() */
 691     }
 692 }