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 "playlist_catalog.h"
  64 #include "menus/exported_menus.h"
  65 #ifdef HAVE_RTC_ALARM
  66 #include "rtc.h"
  67 #endif
  68 #ifdef HAVE_TAGCACHE
  69 #include "tagcache.h"
  70 #endif
  71 #include "language.h"
  72 #include "plugin.h"
  73
  74 struct root_items {
  75     int (*function)(void* param);
  76     void* param;
  77     const struct menu_item_ex *context_menu;
  78 };
  79 static int next_screen = GO_TO_ROOT; /* holding info about the upcoming screen
  80                                         * which is the current screen for the
  81                                         * rest of the code after load_screen
  82                                         * is called */
  83 static int last_screen = GO_TO_ROOT; /* unfortunatly needed so we can resume
  84                                         or goto current track based on previous
  85                                         screen */
  86
  87
  88 static char current_track_path[MAX_PATH];
  89 static void rootmenu_track_changed_callback(void* param)
  90 {
  91     struct mp3entry *id3 = (struct mp3entry *)param;
  92     strlcpy(current_track_path, id3->path, MAX_PATH);
  93 }
  94 static int browser(void* param)
  95 {
  96     int ret_val;
  97 #ifdef HAVE_TAGCACHE
  98     struct tree_context* tc = tree_get_context();
  99 #endif
 100     struct browse_context browse;
 101     int filter = SHOW_SUPPORTED;
 102     char folder[MAX_PATH] = "/";
 103     /* stuff needed to remember position in file browser */
 104     static char last_folder[MAX_PATH] = "/";
 105     /* and stuff for the database browser */
 106 #ifdef HAVE_TAGCACHE
 107     static int last_db_dirlevel = 0, last_db_selection = 0;
 108 #endif
 109
 110     switch ((intptr_t)param)
 111     {
 112         case GO_TO_FILEBROWSER:
 113             filter = global_settings.dirfilter;
 114             if (global_settings.browse_current &&
 115                     last_screen == GO_TO_WPS &&
 116                     current_track_path[0])
 117             {
 118                 strcpy(folder, current_track_path);
 119             }
 120             else if (!strcmp(last_folder, "/"))
 121             {
 122                 strcpy(folder, global_settings.start_directory);
 123             }
 124             else
 125             {
 126 #ifdef HAVE_HOTSWAP
 127                 bool in_hotswap = false;
 128                 /* handle entering an ejected drive */
 129                 int i;
 130                 for (i = 0; i < NUM_VOLUMES; i++)
 131                 {
 132                     char vol_string[VOL_ENUM_POS + 8];
 133                     if (!storage_removable(i))
 134                         continue;
 135                     /* VOL_NAMES contains a %d */
 136                     snprintf(vol_string, sizeof(vol_string), "/"VOL_NAMES, i);
 137                     /* test whether we would browse the external card */
 138                     if (!storage_present(i) &&
 139                             (strstr(last_folder, vol_string)
 140 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 141                                                                 || (i == 0)
 142 #endif
 143                                                                 ))
 144                     {   /* leave folder as "/" to avoid crash when trying
 145                          * to access an ejected drive */
 146                         strcpy(folder, "/");
 147                         in_hotswap = true;
 148                         break;
 149                     }
 150                 }
 151                 if (!in_hotswap)
 152 #endif
 153                     strcpy(folder, last_folder);
 154             }
 155             push_current_activity(ACTIVITY_FILEBROWSER);
 156         break;
 157 #ifdef HAVE_TAGCACHE
 158         case GO_TO_DBBROWSER:
 159             if (!tagcache_is_usable())
 160             {
 161                 bool reinit_attempted = false;
 162
 163                 /* Now display progress until it's ready or the user exits */
 164                 while(!tagcache_is_usable())
 165                 {
 166                     struct tagcache_stat *stat = tagcache_get_stat();
 167
 168                     /* Allow user to exit */
 169                     if (action_userabort(HZ/2))
 170                         break;
 171
 172                     /* Maybe just needs to reboot due to delayed commit */
 173                     if (stat->commit_delayed)
 174                     {
 175                         splash(HZ*2, ID2P(LANG_PLEASE_REBOOT));
 176                         break;
 177                     }
 178
 179                     /* Check if ready status is known */
 180                     if (!stat->readyvalid)
 181                     {
 182                         splash(0, str(LANG_TAGCACHE_BUSY));
 183                         continue;
 184                     }
 185
 186                     /* Re-init if required */
 187                     if (!reinit_attempted && !stat->ready &&
 188                         stat->processed_entries == 0 && stat->commit_step == 0)
 189                     {
 190                         /* Prompt the user */
 191                         reinit_attempted = true;
 192                         static const char *lines[]={
 193                             ID2P(LANG_TAGCACHE_BUSY), ID2P(LANG_TAGCACHE_FORCE_UPDATE)};
 194                         static const struct text_message message={lines, 2};
 195                         if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_NO)
 196                             break;
 197                         int i;
 198                         FOR_NB_SCREENS(i)
 199                             screens[i].clear_display();
 200
 201                         /* Start initialisation */
 202                         tagcache_rebuild();
 203                     }
 204
 205                     /* Display building progress */
 206                     static long talked_tick = 0;
 207                     if(global_settings.talk_menu &&
 208                        (talked_tick == 0
 209                         || TIME_AFTER(current_tick, talked_tick+7*HZ)))
 210                     {
 211                         talked_tick = current_tick;
 212                         if (stat->commit_step > 0)
 213                         {
 214                             talk_id(LANG_TAGCACHE_INIT, false);
 215                             talk_number(stat->commit_step, true);
 216                             talk_id(VOICE_OF, true);
 217                             talk_number(tagcache_get_max_commit_step(), true);
 218                         } else if(stat->processed_entries)
 219                         {
 220                             talk_number(stat->processed_entries, false);
 221                             talk_id(LANG_BUILDING_DATABASE, true);
 222                         }
 223                     }
 224                     if (stat->commit_step > 0)
 225                     {
 226                         if (lang_is_rtl())
 227                         {
 228                             splashf(0, "[%d/%d] %s", stat->commit_step,
 229                                 tagcache_get_max_commit_step(),
 230                                 str(LANG_TAGCACHE_INIT));
 231                         }
 232                         else
 233                         {
 234                             splashf(0, "%s [%d/%d]", str(LANG_TAGCACHE_INIT),
 235                                 stat->commit_step,
 236                                 tagcache_get_max_commit_step());
 237                         }
 238                     }
 239                     else
 240                     {
 241                         splashf(0, str(LANG_BUILDING_DATABASE),
 242                                    stat->processed_entries);
 243                     }
 244                 }
 245             }
 246             if (!tagcache_is_usable())
 247                 return GO_TO_PREVIOUS;
 248             filter = SHOW_ID3DB;
 249             tc->dirlevel = last_db_dirlevel;
 250             tc->selected_item = last_db_selection;
 251             push_current_activity(ACTIVITY_DATABASEBROWSER);
 252         break;
 253 #endif
 254     }
 255
 256     browse_context_init(&browse, filter, 0, NULL, NOICON, folder, NULL);
 257     ret_val = rockbox_browse(&browse);
 258     pop_current_activity();
 259     switch ((intptr_t)param)
 260     {
 261         case GO_TO_FILEBROWSER:
 262             if (!get_current_file(last_folder, MAX_PATH) ||
 263                 (!strchr(&last_folder[1], '/') &&
 264                  global_settings.start_directory[1] != '\0'))
 265             {
 266                 last_folder[0] = '/';
 267                 last_folder[1] = '\0';
 268             }
 269         break;
 270 #ifdef HAVE_TAGCACHE
 271         case GO_TO_DBBROWSER:
 272             last_db_dirlevel = tc->dirlevel;
 273             last_db_selection = tc->selected_item;
 274         break;
 275 #endif
 276     }
 277     return ret_val;
 278 }
 279
 280 #ifdef HAVE_RECORDING
 281 static int recscrn(void* param)
 282 {
 283     (void)param;
 284     recording_screen(false);
 285     return GO_TO_ROOT;
 286 }
 287 #endif
 288 static int wpsscrn(void* param)
 289 {
 290     int ret_val = GO_TO_PREVIOUS;
 291     (void)param;
 292     push_current_activity(ACTIVITY_WPS);
 293     if (audio_status())
 294     {
 295         talk_shutup();
 296         ret_val = gui_wps_show();
 297     }
 298     else if ( global_status.resume_index != -1 )
 299     {
 300         DEBUGF("Resume index %X offset %lX\n",
 301                global_status.resume_index,
 302                (unsigned long)global_status.resume_offset);
 303         if (playlist_resume() != -1)
 304         {
 305             playlist_start(global_status.resume_index,
 306                 global_status.resume_offset);
 307             ret_val = gui_wps_show();
 308         }
 309     }
 310     else
 311     {
 312         splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 313     }
 314     pop_current_activity();
 315     return ret_val;
 316 }
 317 #if CONFIG_TUNER
 318 static int radio(void* param)
 319 {
 320     (void)param;
 321     radio_screen();
 322     return GO_TO_ROOT;
 323 }
 324 #endif
 325
 326 static int miscscrn(void * param)
 327 {
 328     const struct menu_item_ex *menu = (const struct menu_item_ex*)param;
 329     int result = do_menu(menu, NULL, NULL, false);
 330     switch (result)
 331     {
 332         case GO_TO_PLAYLIST_VIEWER:
 333         case GO_TO_WPS:
 334             return result;
 335         default:
 336             return GO_TO_ROOT;
 337     }
 338 }
 339
 340
 341 static int playlist_view_catalog(void * param)
 342 {
 343     /* kludge untill catalog_view_playlists() returns something useful */
 344     int old_playstatus = audio_status();
 345     (void)param;
 346     push_current_activity(ACTIVITY_PLAYLISTBROWSER);
 347     catalog_view_playlists();
 348     pop_current_activity();
 349     if (!old_playstatus && audio_status())
 350         return GO_TO_WPS;
 351     return GO_TO_PREVIOUS;
 352 }
 353
 354 static int playlist_view(void * param)
 355 {
 356     (void)param;
 357     int val;
 358
 359     push_current_activity(ACTIVITY_PLAYLISTVIEWER);
 360     val = playlist_viewer();
 361     pop_current_activity();
 362     switch (val)
 363     {
 364         case PLAYLIST_VIEWER_MAINMENU:
 365         case PLAYLIST_VIEWER_USB:
 366             return GO_TO_ROOT;
 367         case PLAYLIST_VIEWER_OK:
 368             return GO_TO_PREVIOUS;
 369     }
 370     return GO_TO_PREVIOUS;
 371 }
 372
 373 static int load_bmarks(void* param)
 374 {
 375     (void)param;
 376     if(bookmark_mrb_load())
 377         return GO_TO_WPS;
 378     return GO_TO_PREVIOUS;
 379 }
 380
 381 int time_screen(void* ignored);
 382
 383 /* These are all static const'd from apps/menus/ *.c
 384    so little hack so we can use them */
 385 extern struct menu_item_ex
 386         file_menu,
 387 #ifdef HAVE_TAGCACHE
 388         tagcache_menu,
 389 #endif
 390         main_menu_,
 391         manage_settings,
 392         plugin_menu,
 393         playlist_options,
 394         info_menu,
 395         system_menu;
 396 static const struct root_items items[] = {
 397     [GO_TO_FILEBROWSER] =   { browser, (void*)GO_TO_FILEBROWSER, &file_menu},
 398 #ifdef HAVE_TAGCACHE
 399     [GO_TO_DBBROWSER] =     { browser, (void*)GO_TO_DBBROWSER, &tagcache_menu },
 400 #endif
 401     [GO_TO_WPS] =           { wpsscrn, NULL, &playback_settings },
 402     [GO_TO_MAINMENU] =      { miscscrn, (struct menu_item_ex*)&main_menu_,
 403                                                             &manage_settings },
 404
 405 #ifdef HAVE_RECORDING
 406     [GO_TO_RECSCREEN] =     {  recscrn, NULL, &recording_settings_menu },
 407 #endif
 408
 409 #if CONFIG_TUNER
 410     [GO_TO_FM] =            { radio, NULL, &radio_settings_menu },
 411 #endif
 412
 413     [GO_TO_RECENTBMARKS] =  { load_bmarks, NULL, &bookmark_settings_menu },
 414     [GO_TO_BROWSEPLUGINS] = { miscscrn, &plugin_menu, NULL },
 415     [GO_TO_PLAYLISTS_SCREEN] = { playlist_view_catalog, NULL,
 416                                                         &playlist_options },
 417     [GO_TO_PLAYLIST_VIEWER] = { playlist_view, NULL, &playlist_options },
 418     [GO_TO_SYSTEM_SCREEN] = { miscscrn, &info_menu, &system_menu },
 419
 420 };
 421 static const int nb_items = sizeof(items)/sizeof(*items);
 422
 423 static int item_callback(int action, const struct menu_item_ex *this_item) ;
 424
 425 MENUITEM_RETURNVALUE(file_browser, ID2P(LANG_DIR_BROWSER), GO_TO_FILEBROWSER,
 426                         NULL, Icon_file_view_menu);
 427 #ifdef HAVE_TAGCACHE
 428 MENUITEM_RETURNVALUE(db_browser, ID2P(LANG_TAGCACHE), GO_TO_DBBROWSER,
 429                         NULL, Icon_Audio);
 430 #endif
 431 MENUITEM_RETURNVALUE(rocks_browser, ID2P(LANG_PLUGINS), GO_TO_BROWSEPLUGINS,
 432                         NULL, Icon_Plugin);
 433
 434 MENUITEM_RETURNVALUE(playlist_browser, ID2P(LANG_CATALOG), GO_TO_PLAYLIST_VIEWER,
 435                         NULL, Icon_Playlist);
 436
 437 static char *get_wps_item_name(int selected_item, void * data, char *buffer)
 438 {
 439     (void)selected_item; (void)data; (void)buffer;
 440     if (audio_status())
 441         return ID2P(LANG_NOW_PLAYING);
 442     return ID2P(LANG_RESUME_PLAYBACK);
 443 }
 444 MENUITEM_RETURNVALUE_DYNTEXT(wps_item, GO_TO_WPS, NULL, get_wps_item_name,
 445                                 NULL, NULL, Icon_Playback_menu);
 446 #ifdef HAVE_RECORDING
 447 MENUITEM_RETURNVALUE(rec, ID2P(LANG_RECORDING), GO_TO_RECSCREEN,
 448                         NULL, Icon_Recording);
 449 #endif
 450 #if CONFIG_TUNER
 451 MENUITEM_RETURNVALUE(fm, ID2P(LANG_FM_RADIO), GO_TO_FM,
 452                         item_callback, Icon_Radio_screen);
 453 #endif
 454 MENUITEM_RETURNVALUE(menu_, ID2P(LANG_SETTINGS), GO_TO_MAINMENU,
 455                         NULL, Icon_Submenu_Entered);
 456 MENUITEM_RETURNVALUE(bookmarks, ID2P(LANG_BOOKMARK_MENU_RECENT_BOOKMARKS),
 457                         GO_TO_RECENTBMARKS,  item_callback,
 458                         Icon_Bookmark);
 459 MENUITEM_RETURNVALUE(playlists, ID2P(LANG_CATALOG), GO_TO_PLAYLISTS_SCREEN,
 460                      NULL, Icon_Playlist);
 461 MENUITEM_RETURNVALUE(system_menu_, ID2P(LANG_SYSTEM), GO_TO_SYSTEM_SCREEN,
 462                      NULL, Icon_System_menu);
 463
 464 #if CONFIG_KEYPAD == PLAYER_PAD
 465 static int do_shutdown(void)
 466 {
 467 #if CONFIG_CHARGING
 468     if (charger_inserted())
 469         charging_splash();
 470     else
 471 #endif
 472         sys_poweroff();
 473     return 0;
 474 }
 475 MENUITEM_FUNCTION(do_shutdown_item, 0, ID2P(LANG_SHUTDOWN),
 476                   do_shutdown, NULL, NULL, Icon_NOICON);
 477 #endif
 478 MAKE_MENU(root_menu_, ID2P(LANG_ROCKBOX_TITLE),
 479             item_callback, Icon_Rockbox,
 480             &bookmarks, &file_browser,
 481 #ifdef HAVE_TAGCACHE
 482             &db_browser,
 483 #endif
 484             &wps_item, &menu_,
 485 #ifdef HAVE_RECORDING
 486             &rec,
 487 #endif
 488 #if CONFIG_TUNER
 489             &fm,
 490 #endif
 491             &playlists, &rocks_browser,  &system_menu_
 492
 493 #if CONFIG_KEYPAD == PLAYER_PAD
 494             ,&do_shutdown_item
 495 #endif
 496         );
 497
 498 static int item_callback(int action, const struct menu_item_ex *this_item)
 499 {
 500     switch (action)
 501     {
 502         case ACTION_TREE_STOP:
 503             return ACTION_REDRAW;
 504         case ACTION_REQUEST_MENUITEM:
 505 #if CONFIG_TUNER
 506             if (this_item == &fm)
 507             {
 508                 if (radio_hardware_present() == 0)
 509                     return ACTION_EXIT_MENUITEM;
 510             }
 511             else
 512 #endif
 513                 if (this_item == &bookmarks)
 514             {
 515                 if (global_settings.usemrb == 0)
 516                     return ACTION_EXIT_MENUITEM;
 517             }
 518         break;
 519     }
 520     return action;
 521 }
 522 static int get_selection(int last_screen)
 523 {
 524     int i;
 525     int len = ARRAYLEN(root_menu__);
 526     for(i=0; i < len; i++)
 527     {
 528         if (((root_menu__[i]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE) &&
 529             (root_menu__[i]->value == last_screen))
 530         {
 531             return i;
 532         }
 533     }
 534     return 0;
 535 }
 536
 537 static inline int load_screen(int screen)
 538 {
 539     /* set the global_status.last_screen before entering,
 540         if we dont we will always return to the wrong screen on boot */
 541     int old_previous = last_screen;
 542     int ret_val;
 543     enum current_activity activity = ACTIVITY_UNKNOWN;
 544     if (screen <= GO_TO_ROOT)
 545         return screen;
 546     if (screen == old_previous)
 547         old_previous = GO_TO_ROOT;
 548     global_status.last_screen = (char)screen;
 549     status_save();
 550
 551     if (screen == GO_TO_BROWSEPLUGINS)
 552         activity = ACTIVITY_PLUGINBROWSER;
 553     else if (screen == GO_TO_MAINMENU)
 554         activity = ACTIVITY_SETTINGS;
 555
 556     if (activity != ACTIVITY_UNKNOWN)
 557         push_current_activity(activity);
 558
 559     ret_val = items[screen].function(items[screen].param);
 560
 561     if (activity != ACTIVITY_UNKNOWN)
 562         pop_current_activity();
 563
 564     last_screen = screen;
 565     if (ret_val == GO_TO_PREVIOUS)
 566         last_screen = old_previous;
 567     return ret_val;
 568 }
 569 static int load_context_screen(int selection)
 570 {
 571     const struct menu_item_ex *context_menu = NULL;
 572     if ((root_menu__[selection]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE)
 573     {
 574         int item = root_menu__[selection]->value;
 575         context_menu = items[item].context_menu;
 576     }
 577     /* special cases */
 578     else if (root_menu__[selection] == &info_menu)
 579     {
 580         context_menu = &system_menu;
 581     }
 582
 583     if (context_menu)
 584         return do_menu(context_menu, NULL, NULL, false);
 585     else
 586         return GO_TO_PREVIOUS;
 587 }
 588
 589 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 590 static int load_plugin_screen(char *plug_path)
 591 {
 592     int ret_val;
 593     int old_previous = last_screen;
 594     last_screen = next_screen;
 595     global_status.last_screen = (char)next_screen;
 596     status_save();
 597
 598     switch (plugin_load(plug_path, NULL))
 599     {
 600     case PLUGIN_GOTO_WPS:
 601         ret_val = GO_TO_WPS;
 602         break;
 603     case PLUGIN_OK:
 604         ret_val = audio_status() ? GO_TO_PREVIOUS : GO_TO_ROOT;
 605         break;
 606     default:
 607         ret_val = GO_TO_PREVIOUS;
 608         break;
 609     }
 610
 611     if (ret_val == GO_TO_PREVIOUS)
 612         last_screen = (old_previous == next_screen) ? GO_TO_ROOT : old_previous;
 613     return ret_val;
 614 }
 615 #endif
 616
 617 static int previous_music = GO_TO_WPS;
 618
 619 void previous_music_is_wps(void)
 620 {
 621     previous_music = GO_TO_WPS;
 622 }
 623
 624 void root_menu(void)
 625 {
 626     int previous_browser = GO_TO_FILEBROWSER;
 627     int selected = 0;
 628
 629     push_current_activity(ACTIVITY_MAINMENU);
 630
 631     if (global_settings.start_in_screen == 0)
 632         next_screen = (int)global_status.last_screen;
 633     else next_screen = global_settings.start_in_screen - 2;
 634     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, rootmenu_track_changed_callback);
 635 #ifdef HAVE_RTC_ALARM
 636     if ( rtc_check_alarm_started(true) )
 637     {
 638         rtc_enable_alarm(false);
 639         next_screen = GO_TO_WPS;
 640 #if CONFIG_TUNER
 641         if (global_settings.alarm_wake_up_screen == ALARM_START_FM)
 642             next_screen = GO_TO_FM;
 643 #endif
 644 #ifdef HAVE_RECORDING
 645         if (global_settings.alarm_wake_up_screen == ALARM_START_REC)
 646         {
 647             recording_start_automatic = true;
 648             next_screen = GO_TO_RECSCREEN;
 649         }
 650 #endif
 651     }
 652 #endif /* HAVE_RTC_ALARM */
 653
 654 #ifdef HAVE_HEADPHONE_DETECTION
 655     if (next_screen == GO_TO_WPS &&
 656         (global_settings.unplug_autoresume && !headphones_inserted() ))
 657             next_screen = GO_TO_ROOT;
 658 #endif
 659
 660     while (true)
 661     {
 662         switch (next_screen)
 663         {
 664             case MENU_ATTACHED_USB:
 665             case MENU_SELECTED_EXIT:
 666                 /* fall through */
 667             case GO_TO_ROOT:
 668                 if (last_screen != GO_TO_ROOT)
 669                     selected = get_selection(last_screen);
 670 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
 671                 /* When we are in the main menu we want the hardware BACK
 672                  * button to be handled by Android instead of rockbox */
 673                 android_ignore_back_button(true);
 674 #endif
 675                 next_screen = do_menu(&root_menu_, &selected, NULL, false);
 676 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
 677                 android_ignore_back_button(false);
 678 #endif
 679                 if (next_screen != GO_TO_PREVIOUS)
 680                     last_screen = GO_TO_ROOT;
 681                 break;
 682
 683             case GO_TO_PREVIOUS:
 684                 next_screen = last_screen;
 685                 break;
 686
 687             case GO_TO_PREVIOUS_BROWSER:
 688                 next_screen = previous_browser;
 689                 break;
 690
 691             case GO_TO_PREVIOUS_MUSIC:
 692                 next_screen = previous_music;
 693                 break;
 694             case GO_TO_ROOTITEM_CONTEXT:
 695                 next_screen = load_context_screen(selected);
 696                 break;
 697 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 698             case GO_TO_PICTUREFLOW:
 699                 while ( !tagcache_is_usable() )
 700                 {
 701                     splash(0, str(LANG_TAGCACHE_BUSY));
 702                     if ( action_userabort(HZ/5) )
 703                         break;
 704                 }
 705                 {
 706                     char pf_path[MAX_PATH];
 707                     snprintf(pf_path, sizeof(pf_path),
 708                             "%s/pictureflow.rock",
 709                             PLUGIN_DEMOS_DIR);
 710                     next_screen = load_plugin_screen(pf_path);
 711                 }
 712                 previous_browser = GO_TO_PICTUREFLOW;
 713                 break;
 714 #endif
 715             default:
 716                 if (next_screen == GO_TO_FILEBROWSER
 717 #ifdef HAVE_TAGCACHE
 718                     || next_screen == GO_TO_DBBROWSER
 719 #endif
 720                    )
 721                     previous_browser = next_screen;
 722                 if (next_screen == GO_TO_WPS
 723 #if CONFIG_TUNER
 724                     || next_screen == GO_TO_FM
 725 #endif
 726                    )
 727                     previous_music = next_screen;
 728                 next_screen = load_screen(next_screen);
 729                 break;
 730         } /* switch() */
 731     }
 732 }