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     int filter = SHOW_SUPPORTED;
 100     char folder[MAX_PATH] = "/";
 101     /* stuff needed to remember position in file browser */
 102     static char last_folder[MAX_PATH] = "/";
 103     /* and stuff for the database browser */
 104 #ifdef HAVE_TAGCACHE
 105     static int last_db_dirlevel = 0, last_db_selection = 0;
 106 #endif
 107
 108     switch ((intptr_t)param)
 109     {
 110         case GO_TO_FILEBROWSER:
 111             filter = global_settings.dirfilter;
 112             if (global_settings.browse_current &&
 113                     last_screen == GO_TO_WPS &&
 114                     current_track_path[0])
 115             {
 116                 strcpy(folder, current_track_path);
 117             }
 118             else
 119             {
 120 #ifdef HAVE_HOTSWAP
 121                 bool in_hotswap = false;
 122                 /* handle entering an ejected drive */
 123                 int i;
 124                 for (i = 0; i < NUM_VOLUMES; i++)
 125                 {
 126                     char vol_string[VOL_ENUM_POS + 8];
 127                     if (!storage_removable(i))
 128                         continue;
 129                     /* VOL_NAMES contains a %d */
 130                     snprintf(vol_string, sizeof(vol_string), "/"VOL_NAMES, i);
 131                     /* test whether we would browse the external card */
 132                     if (!storage_present(i) &&
 133                             (strstr(last_folder, vol_string)
 134 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 135                                                                 || (i == 0)
 136 #endif
 137                                                                 ))
 138                     {   /* leave folder as "/" to avoid crash when trying
 139                          * to access an ejected drive */
 140                         strcpy(folder, "/");
 141                         in_hotswap = true;
 142                         break;
 143                     }
 144                 }
 145             if (!in_hotswap)
 146 #endif
 147                 strcpy(folder, last_folder);
 148             }
 149         break;
 150 #ifdef HAVE_TAGCACHE
 151         case GO_TO_DBBROWSER:
 152             if (!tagcache_is_usable())
 153             {
 154                 bool reinit_attempted = false;
 155
 156                 /* Now display progress until it's ready or the user exits */
 157                 while(!tagcache_is_usable())
 158                 {
 159                     struct tagcache_stat *stat = tagcache_get_stat();
 160
 161                     /* Allow user to exit */
 162                     if (action_userabort(HZ/2))
 163                         break;
 164
 165                     /* Maybe just needs to reboot due to delayed commit */
 166                     if (stat->commit_delayed)
 167                     {
 168                         splash(HZ*2, ID2P(LANG_PLEASE_REBOOT));
 169                         break;
 170                     }
 171
 172                     /* Check if ready status is known */
 173                     if (!stat->readyvalid)
 174                     {
 175                         splash(0, str(LANG_TAGCACHE_BUSY));
 176                         continue;
 177                     }
 178
 179                     /* Re-init if required */
 180                     if (!reinit_attempted && !stat->ready &&
 181                         stat->processed_entries == 0 && stat->commit_step == 0)
 182                     {
 183                         /* Prompt the user */
 184                         reinit_attempted = true;
 185                         static const char *lines[]={
 186                             ID2P(LANG_TAGCACHE_BUSY), ID2P(LANG_TAGCACHE_FORCE_UPDATE)};
 187                         static const struct text_message message={lines, 2};
 188                         if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_NO)
 189                             break;
 190                         int i;
 191                         FOR_NB_SCREENS(i)
 192                             screens[i].clear_display();
 193
 194                         /* Start initialisation */
 195                         tagcache_rebuild();
 196                     }
 197
 198                     /* Display building progress */
 199                     static long talked_tick = 0;
 200                     if(global_settings.talk_menu &&
 201                        (talked_tick == 0
 202                         || TIME_AFTER(current_tick, talked_tick+7*HZ)))
 203                     {
 204                         talked_tick = current_tick;
 205                         if (stat->commit_step > 0)
 206                         {
 207                             talk_id(LANG_TAGCACHE_INIT, false);
 208                             talk_number(stat->commit_step, true);
 209                             talk_id(VOICE_OF, true);
 210                             talk_number(tagcache_get_max_commit_step(), true);
 211                         } else if(stat->processed_entries)
 212                         {
 213                             talk_number(stat->processed_entries, false);
 214                             talk_id(LANG_BUILDING_DATABASE, true);
 215                         }
 216                     }
 217                     if (stat->commit_step > 0)
 218                     {
 219                         if (lang_is_rtl())
 220                         {
 221                             splashf(0, "[%d/%d] %s", stat->commit_step,
 222                                 tagcache_get_max_commit_step(),
 223                                 str(LANG_TAGCACHE_INIT));
 224                         }
 225                         else
 226                         {
 227                             splashf(0, "%s [%d/%d]", str(LANG_TAGCACHE_INIT),
 228                                 stat->commit_step,
 229                                 tagcache_get_max_commit_step());
 230                         }
 231                     }
 232                     else
 233                     {
 234                         splashf(0, str(LANG_BUILDING_DATABASE),
 235                                    stat->processed_entries);
 236                     }
 237                 }
 238             }
 239             if (!tagcache_is_usable())
 240                 return GO_TO_PREVIOUS;
 241             filter = SHOW_ID3DB;
 242             tc->dirlevel = last_db_dirlevel;
 243             tc->selected_item = last_db_selection;
 244         break;
 245 #endif
 246         case GO_TO_BROWSEPLUGINS:
 247             filter = SHOW_PLUGINS;
 248             strlcpy(folder, PLUGIN_DIR, MAX_PATH);
 249         break;
 250     }
 251     ret_val = rockbox_browse(folder, filter);
 252     switch ((intptr_t)param)
 253     {
 254         case GO_TO_FILEBROWSER:
 255             if (!get_current_file(last_folder, MAX_PATH))
 256             {
 257                 last_folder[0] = '/';
 258                 last_folder[1] = '\0';
 259             }
 260         break;
 261 #ifdef HAVE_TAGCACHE
 262         case GO_TO_DBBROWSER:
 263             last_db_dirlevel = tc->dirlevel;
 264             last_db_selection = tc->selected_item;
 265         break;
 266 #endif
 267     }
 268     return ret_val;
 269 }
 270
 271 static int menu(void* param)
 272 {
 273     (void)param;
 274     return do_menu(NULL, 0, NULL, false);
 275
 276 }
 277 #ifdef HAVE_RECORDING
 278 static int recscrn(void* param)
 279 {
 280     (void)param;
 281     recording_screen(false);
 282     return GO_TO_ROOT;
 283 }
 284 #endif
 285 static int wpsscrn(void* param)
 286 {
 287     int ret_val = GO_TO_PREVIOUS;
 288     (void)param;
 289     if (audio_status())
 290     {
 291         talk_shutup();
 292         ret_val = gui_wps_show();
 293     }
 294     else if ( global_status.resume_index != -1 )
 295     {
 296         DEBUGF("Resume index %X offset %lX\n",
 297                global_status.resume_index,
 298                (unsigned long)global_status.resume_offset);
 299         if (playlist_resume() != -1)
 300         {
 301             playlist_start(global_status.resume_index,
 302                 global_status.resume_offset);
 303             ret_val = gui_wps_show();
 304         }
 305     }
 306     else
 307     {
 308         splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 309     }
 310     return ret_val;
 311 }
 312 #if CONFIG_TUNER
 313 static int radio(void* param)
 314 {
 315     (void)param;
 316     radio_screen();
 317     return GO_TO_ROOT;
 318 }
 319 #endif
 320
 321 static int playlist_view(void * param)
 322 {
 323     (void)param;
 324     switch (playlist_viewer())
 325     {
 326         case PLAYLIST_VIEWER_MAINMENU:
 327         case PLAYLIST_VIEWER_USB:
 328             return GO_TO_ROOT;
 329         case PLAYLIST_VIEWER_OK:
 330             return GO_TO_PREVIOUS;
 331     }
 332     return GO_TO_PREVIOUS;
 333 }
 334
 335 static int load_bmarks(void* param)
 336 {
 337     (void)param;
 338     if(bookmark_mrb_load())
 339         return GO_TO_WPS;
 340     return GO_TO_PREVIOUS;
 341 }
 342 static int plugins_menu(void* param)
 343 {
 344     (void)param;
 345     MENUITEM_STRINGLIST(plugins_menu_items, ID2P(LANG_PLUGINS), NULL,
 346                         ID2P(LANG_PLUGIN_GAMES),
 347                         ID2P(LANG_PLUGIN_APPS), ID2P(LANG_PLUGIN_DEMOS));
 348     const char *folder;
 349     int retval = GO_TO_PREVIOUS;
 350     int selection = 0, current = 0;
 351     while (retval == GO_TO_PREVIOUS)
 352     {
 353         selection = do_menu(&plugins_menu_items, &current, NULL, false);
 354         switch (selection)
 355         {
 356             case 0:
 357                 folder = PLUGIN_GAMES_DIR;
 358                 break;
 359             case 1:
 360                 folder = PLUGIN_APPS_DIR;
 361                 break;
 362             case 2:
 363                 folder = PLUGIN_DEMOS_DIR;
 364                 break;
 365             default:
 366                 return selection;
 367         }
 368         retval = rockbox_browse(folder, SHOW_PLUGINS);
 369     }
 370     return retval;
 371 }
 372 int time_screen(void* ignored);
 373
 374 /* These are all static const'd from apps/menus/ *.c
 375    so little hack so we can use them */
 376 extern struct menu_item_ex
 377         file_menu,
 378 #ifdef HAVE_TAGCACHE
 379         tagcache_menu,
 380 #endif
 381         manage_settings,
 382         recording_settings_menu,
 383         radio_settings_menu,
 384         bookmark_settings_menu,
 385         system_menu;
 386 static const struct root_items items[] = {
 387     [GO_TO_FILEBROWSER] =   { browser, (void*)GO_TO_FILEBROWSER, &file_menu},
 388 #ifdef HAVE_TAGCACHE
 389     [GO_TO_DBBROWSER] =     { browser, (void*)GO_TO_DBBROWSER, &tagcache_menu },
 390 #endif
 391     [GO_TO_WPS] =           { wpsscrn, NULL, &playback_settings },
 392     [GO_TO_MAINMENU] =      { menu, NULL, &manage_settings },
 393
 394 #ifdef HAVE_RECORDING
 395     [GO_TO_RECSCREEN] =     {  recscrn, NULL, &recording_settings_menu },
 396 #endif
 397
 398 #if CONFIG_TUNER
 399     [GO_TO_FM] =            { radio, NULL, &radio_settings_menu },
 400 #endif
 401
 402     [GO_TO_RECENTBMARKS] =  { load_bmarks, NULL, &bookmark_settings_menu },
 403     [GO_TO_BROWSEPLUGINS] = { plugins_menu, NULL, NULL },
 404     [GO_TO_PLAYLIST_VIEWER] = { playlist_view, NULL, NULL },
 405
 406 };
 407 static const int nb_items = sizeof(items)/sizeof(*items);
 408
 409 static int item_callback(int action, const struct menu_item_ex *this_item) ;
 410
 411 MENUITEM_RETURNVALUE(file_browser, ID2P(LANG_DIR_BROWSER), GO_TO_FILEBROWSER,
 412                         NULL, Icon_file_view_menu);
 413 #ifdef HAVE_TAGCACHE
 414 MENUITEM_RETURNVALUE(db_browser, ID2P(LANG_TAGCACHE), GO_TO_DBBROWSER,
 415                         NULL, Icon_Audio);
 416 #endif
 417 MENUITEM_RETURNVALUE(rocks_browser, ID2P(LANG_PLUGINS), GO_TO_BROWSEPLUGINS,
 418                         NULL, Icon_Plugin);
 419 static char *get_wps_item_name(int selected_item, void * data, char *buffer)
 420 {
 421     (void)selected_item; (void)data; (void)buffer;
 422     if (audio_status())
 423         return ID2P(LANG_NOW_PLAYING);
 424     return ID2P(LANG_RESUME_PLAYBACK);
 425 }
 426 MENUITEM_RETURNVALUE_DYNTEXT(wps_item, GO_TO_WPS, NULL, get_wps_item_name,
 427                                 NULL, NULL, Icon_Playback_menu);
 428 #ifdef HAVE_RECORDING
 429 MENUITEM_RETURNVALUE(rec, ID2P(LANG_RECORDING), GO_TO_RECSCREEN,
 430                         NULL, Icon_Recording);
 431 #endif
 432 #if CONFIG_TUNER
 433 MENUITEM_RETURNVALUE(fm, ID2P(LANG_FM_RADIO), GO_TO_FM,
 434                         item_callback, Icon_Radio_screen);
 435 #endif
 436 MENUITEM_RETURNVALUE(menu_, ID2P(LANG_SETTINGS), GO_TO_MAINMENU,
 437                         NULL, Icon_Submenu_Entered);
 438 MENUITEM_RETURNVALUE(bookmarks, ID2P(LANG_BOOKMARK_MENU_RECENT_BOOKMARKS),
 439                         GO_TO_RECENTBMARKS,  item_callback,
 440                         Icon_Bookmark);
 441 #ifdef HAVE_LCD_CHARCELLS
 442 static int do_shutdown(void)
 443 {
 444 #if CONFIG_CHARGING
 445     if (charger_inserted())
 446         charging_splash();
 447     else
 448 #endif
 449         sys_poweroff();
 450     return 0;
 451 }
 452 MENUITEM_FUNCTION(do_shutdown_item, 0, ID2P(LANG_SHUTDOWN),
 453                   do_shutdown, NULL, NULL, Icon_NOICON);
 454 #endif
 455 MAKE_MENU(root_menu_, ID2P(LANG_ROCKBOX_TITLE),
 456             item_callback, Icon_Rockbox,
 457             &bookmarks, &file_browser,
 458 #ifdef HAVE_TAGCACHE
 459             &db_browser,
 460 #endif
 461             &wps_item, &menu_,
 462 #ifdef HAVE_RECORDING
 463             &rec,
 464 #endif
 465 #if CONFIG_TUNER
 466             &fm,
 467 #endif
 468             &playlist_options, &rocks_browser,  &info_menu
 469
 470 #ifdef HAVE_LCD_CHARCELLS
 471             ,&do_shutdown_item
 472 #endif
 473         );
 474
 475 static int item_callback(int action, const struct menu_item_ex *this_item)
 476 {
 477     switch (action)
 478     {
 479         case ACTION_TREE_STOP:
 480             return ACTION_REDRAW;
 481         case ACTION_REQUEST_MENUITEM:
 482 #if CONFIG_TUNER
 483             if (this_item == &fm)
 484             {
 485                 if (radio_hardware_present() == 0)
 486                     return ACTION_EXIT_MENUITEM;
 487             }
 488             else
 489 #endif
 490                 if (this_item == &bookmarks)
 491             {
 492                 if (global_settings.usemrb == 0)
 493                     return ACTION_EXIT_MENUITEM;
 494             }
 495         break;
 496     }
 497     return action;
 498 }
 499 static int get_selection(int last_screen)
 500 {
 501     int i;
 502     int len = ARRAYLEN(root_menu__);
 503     for(i=0; i < len; i++)
 504     {
 505         if (((root_menu__[i]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE) &&
 506             (root_menu__[i]->value == last_screen))
 507         {
 508             return i;
 509         }
 510     }
 511     return 0;
 512 }
 513
 514 static inline int load_screen(int screen)
 515 {
 516     /* set the global_status.last_screen before entering,
 517         if we dont we will always return to the wrong screen on boot */
 518     int old_previous = last_screen;
 519     int ret_val;
 520     if (screen <= GO_TO_ROOT)
 521         return screen;
 522     if (screen == old_previous)
 523         old_previous = GO_TO_ROOT;
 524     global_status.last_screen = (char)screen;
 525     status_save();
 526     ret_val = items[screen].function(items[screen].param);
 527     last_screen = screen;
 528     if (ret_val == GO_TO_PREVIOUS)
 529         last_screen = old_previous;
 530     return ret_val;
 531 }
 532 static int load_context_screen(int selection)
 533 {
 534     const struct menu_item_ex *context_menu = NULL;
 535     if ((root_menu__[selection]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE)
 536     {
 537         int item = root_menu__[selection]->value;
 538         context_menu = items[item].context_menu;
 539     }
 540     /* special cases */
 541     else if (root_menu__[selection] == &info_menu)
 542     {
 543         context_menu = &system_menu;
 544     }
 545
 546     if (context_menu)
 547         return do_menu(context_menu, NULL, NULL, false);
 548     else
 549         return GO_TO_PREVIOUS;
 550 }
 551
 552 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 553 static int load_plugin_screen(char *plug_path)
 554 {
 555     int ret_val;
 556     int old_previous = last_screen;
 557     last_screen = next_screen;
 558     global_status.last_screen = (char)next_screen;
 559     status_save();
 560
 561     switch (plugin_load(plug_path, NULL))
 562     {
 563     case PLUGIN_GOTO_WPS:
 564         ret_val = GO_TO_WPS;
 565         break;
 566     case PLUGIN_OK:
 567         ret_val = audio_status() ? GO_TO_PREVIOUS : GO_TO_ROOT;
 568         break;
 569     default:
 570         ret_val = GO_TO_PREVIOUS;
 571         break;
 572     }
 573
 574     if (ret_val == GO_TO_PREVIOUS)
 575         last_screen = (old_previous == next_screen) ? GO_TO_ROOT : old_previous;
 576     return ret_val;
 577 }
 578 #endif
 579
 580 static int previous_music = GO_TO_WPS;
 581
 582 void previous_music_is_wps(void)
 583 {
 584     previous_music = GO_TO_WPS;
 585 }
 586
 587 int current_screen(void)
 588 {
 589     return next_screen;
 590 }
 591
 592 void root_menu(void)
 593 {
 594     int previous_browser = GO_TO_FILEBROWSER;
 595     int selected = 0;
 596
 597     if (global_settings.start_in_screen == 0)
 598         next_screen = (int)global_status.last_screen;
 599     else next_screen = global_settings.start_in_screen - 2;
 600     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, rootmenu_track_changed_callback);
 601 #ifdef HAVE_RTC_ALARM
 602     if ( rtc_check_alarm_started(true) )
 603     {
 604         rtc_enable_alarm(false);
 605         next_screen = GO_TO_WPS;
 606 #if CONFIG_TUNER
 607         if (global_settings.alarm_wake_up_screen == ALARM_START_FM)
 608             next_screen = GO_TO_FM;
 609 #endif
 610 #ifdef HAVE_RECORDING
 611         if (global_settings.alarm_wake_up_screen == ALARM_START_REC)
 612         {
 613             recording_start_automatic = true;
 614             next_screen = GO_TO_RECSCREEN;
 615         }
 616 #endif
 617     }
 618 #endif /* HAVE_RTC_ALARM */
 619
 620 #ifdef HAVE_HEADPHONE_DETECTION
 621     if (next_screen == GO_TO_WPS &&
 622         (global_settings.unplug_autoresume && !headphones_inserted() ))
 623             next_screen = GO_TO_ROOT;
 624 #endif
 625
 626     while (true)
 627     {
 628         switch (next_screen)
 629         {
 630             case MENU_ATTACHED_USB:
 631             case MENU_SELECTED_EXIT:
 632                 /* fall through */
 633             case GO_TO_ROOT:
 634                 if (last_screen != GO_TO_ROOT)
 635                     selected = get_selection(last_screen);
 636                 next_screen = do_menu(&root_menu_, &selected, NULL, false);
 637                 if (next_screen != GO_TO_PREVIOUS)
 638                     last_screen = GO_TO_ROOT;
 639                 break;
 640
 641             case GO_TO_PREVIOUS:
 642                 next_screen = last_screen;
 643                 break;
 644
 645             case GO_TO_PREVIOUS_BROWSER:
 646                 next_screen = previous_browser;
 647                 break;
 648
 649             case GO_TO_PREVIOUS_MUSIC:
 650                 next_screen = previous_music;
 651                 break;
 652             case GO_TO_ROOTITEM_CONTEXT:
 653                 next_screen = load_context_screen(selected);
 654                 break;
 655 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 656             case GO_TO_PICTUREFLOW:
 657                 while ( !tagcache_is_usable() )
 658                 {
 659                     splash(0, str(LANG_TAGCACHE_BUSY));
 660                     if ( action_userabort(HZ/5) )
 661                         break;
 662                 }
 663                 {
 664                     char pf_path[MAX_PATH];
 665                     snprintf(pf_path, sizeof(pf_path),
 666                             "%s/pictureflow.rock",
 667                             PLUGIN_DEMOS_DIR);
 668                     next_screen = load_plugin_screen(pf_path);
 669                 }
 670                 previous_browser = GO_TO_PICTUREFLOW;
 671                 break;
 672 #endif
 673             default:
 674                 if (next_screen == GO_TO_FILEBROWSER
 675 #ifdef HAVE_TAGCACHE
 676                     || next_screen == GO_TO_DBBROWSER
 677 #endif
 678                    )
 679                     previous_browser = next_screen;
 680                 if (next_screen == GO_TO_WPS
 681 #if CONFIG_TUNER
 682                     || next_screen == GO_TO_FM
 683 #endif
 684                    )
 685                     previous_music = next_screen;
 686                 next_screen = load_screen(next_screen);
 687                 break;
 688         } /* switch() */
 689     }
 690 }