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 #include "shortcuts.h"
  41
  42 #ifdef HAVE_HOTSWAP
  43 #include "storage.h"
  44 #include "dir.h"
  45 #endif
  46 /* gui api */
  47 #include "list.h"
  48 #include "splash.h"
  49 #include "action.h"
  50 #include "yesno.h"
  51 #include "viewport.h"
  52
  53 #include "tree.h"
  54 #if CONFIG_TUNER
  55 #include "radio.h"
  56 #endif
  57 #ifdef HAVE_RECORDING
  58 #include "recording.h"
  59 #endif
  60 #include "wps.h"
  61 #include "bookmark.h"
  62 #include "playlist.h"
  63 #include "playlist_viewer.h"
  64 #include "playlist_catalog.h"
  65 #include "menus/exported_menus.h"
  66 #ifdef HAVE_RTC_ALARM
  67 #include "rtc.h"
  68 #endif
  69 #ifdef HAVE_TAGCACHE
  70 #include "tagcache.h"
  71 #endif
  72 #include "language.h"
  73 #include "plugin.h"
  74
  75 struct root_items {
  76     int (*function)(void* param);
  77     void* param;
  78     const struct menu_item_ex *context_menu;
  79 };
  80 static int next_screen = GO_TO_ROOT; /* holding info about the upcoming screen
  81                                         * which is the current screen for the
  82                                         * rest of the code after load_screen
  83                                         * is called */
  84 static int last_screen = GO_TO_ROOT; /* unfortunatly needed so we can resume
  85                                         or goto current track based on previous
  86                                         screen */
  87
  88
  89 static char current_track_path[MAX_PATH];
  90 static void rootmenu_track_changed_callback(void* param)
  91 {
  92     struct mp3entry *id3 = (struct mp3entry *)param;
  93     strlcpy(current_track_path, id3->path, MAX_PATH);
  94 }
  95 static int browser(void* param)
  96 {
  97     int ret_val;
  98 #ifdef HAVE_TAGCACHE
  99     struct tree_context* tc = tree_get_context();
 100 #endif
 101     struct browse_context browse;
 102     int filter = SHOW_SUPPORTED;
 103     char folder[MAX_PATH] = "/";
 104     /* stuff needed to remember position in file browser */
 105     static char last_folder[MAX_PATH] = "/";
 106     /* and stuff for the database browser */
 107 #ifdef HAVE_TAGCACHE
 108     static int last_db_dirlevel = 0, last_db_selection = 0;
 109 #endif
 110
 111     switch ((intptr_t)param)
 112     {
 113         case GO_TO_FILEBROWSER:
 114             filter = global_settings.dirfilter;
 115             if (global_settings.browse_current &&
 116                     last_screen == GO_TO_WPS &&
 117                     current_track_path[0])
 118             {
 119                 strcpy(folder, current_track_path);
 120             }
 121             else if (!strcmp(last_folder, "/"))
 122             {
 123                 strcpy(folder, global_settings.start_directory);
 124             }
 125             else
 126             {
 127 #ifdef HAVE_HOTSWAP
 128                 bool in_hotswap = false;
 129                 /* handle entering an ejected drive */
 130                 int i;
 131                 for (i = 0; i < NUM_VOLUMES; i++)
 132                 {
 133                     char vol_string[VOL_ENUM_POS + 8];
 134                     if (!storage_removable(i))
 135                         continue;
 136                     /* VOL_NAMES contains a %d */
 137                     snprintf(vol_string, sizeof(vol_string), "/"VOL_NAMES, i);
 138                     /* test whether we would browse the external card */
 139                     if (!storage_present(i) &&
 140                             (strstr(last_folder, vol_string)
 141 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 142                                                                 || (i == 0)
 143 #endif
 144                                                                 ))
 145                     {   /* leave folder as "/" to avoid crash when trying
 146                          * to access an ejected drive */
 147                         strcpy(folder, "/");
 148                         in_hotswap = true;
 149                         break;
 150                     }
 151                 }
 152                 if (!in_hotswap)
 153 #endif
 154                     strcpy(folder, last_folder);
 155             }
 156             push_current_activity(ACTIVITY_FILEBROWSER);
 157         break;
 158 #ifdef HAVE_TAGCACHE
 159         case GO_TO_DBBROWSER:
 160             if (!tagcache_is_usable())
 161             {
 162                 bool reinit_attempted = false;
 163
 164                 /* Now display progress until it's ready or the user exits */
 165                 while(!tagcache_is_usable())
 166                 {
 167                     struct tagcache_stat *stat = tagcache_get_stat();
 168
 169                     /* Allow user to exit */
 170                     if (action_userabort(HZ/2))
 171                         break;
 172
 173                     /* Maybe just needs to reboot due to delayed commit */
 174                     if (stat->commit_delayed)
 175                     {
 176                         splash(HZ*2, ID2P(LANG_PLEASE_REBOOT));
 177                         break;
 178                     }
 179
 180                     /* Check if ready status is known */
 181                     if (!stat->readyvalid)
 182                     {
 183                         splash(0, str(LANG_TAGCACHE_BUSY));
 184                         continue;
 185                     }
 186
 187                     /* Re-init if required */
 188                     if (!reinit_attempted && !stat->ready &&
 189                         stat->processed_entries == 0 && stat->commit_step == 0)
 190                     {
 191                         /* Prompt the user */
 192                         reinit_attempted = true;
 193                         static const char *lines[]={
 194                             ID2P(LANG_TAGCACHE_BUSY), ID2P(LANG_TAGCACHE_FORCE_UPDATE)};
 195                         static const struct text_message message={lines, 2};
 196                         if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_NO)
 197                             break;
 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 /* These are all static const'd from apps/menus/ *.c
 382    so little hack so we can use them */
 383 extern struct menu_item_ex
 384         file_menu,
 385 #ifdef HAVE_TAGCACHE
 386         tagcache_menu,
 387 #endif
 388         main_menu_,
 389         manage_settings,
 390         plugin_menu,
 391         playlist_options,
 392         info_menu,
 393         system_menu;
 394 static const struct root_items items[] = {
 395     [GO_TO_FILEBROWSER] =   { browser, (void*)GO_TO_FILEBROWSER, &file_menu},
 396 #ifdef HAVE_TAGCACHE
 397     [GO_TO_DBBROWSER] =     { browser, (void*)GO_TO_DBBROWSER, &tagcache_menu },
 398 #endif
 399     [GO_TO_WPS] =           { wpsscrn, NULL, &playback_settings },
 400     [GO_TO_MAINMENU] =      { miscscrn, (struct menu_item_ex*)&main_menu_,
 401                                                             &manage_settings },
 402
 403 #ifdef HAVE_RECORDING
 404     [GO_TO_RECSCREEN] =     {  recscrn, NULL, &recording_settings_menu },
 405 #endif
 406
 407 #if CONFIG_TUNER
 408     [GO_TO_FM] =            { radio, NULL, &radio_settings_menu },
 409 #endif
 410
 411     [GO_TO_RECENTBMARKS] =  { load_bmarks, NULL, &bookmark_settings_menu },
 412     [GO_TO_BROWSEPLUGINS] = { miscscrn, &plugin_menu, NULL },
 413     [GO_TO_PLAYLISTS_SCREEN] = { playlist_view_catalog, NULL,
 414                                                         &playlist_options },
 415     [GO_TO_PLAYLIST_VIEWER] = { playlist_view, NULL, &playlist_options },
 416     [GO_TO_SYSTEM_SCREEN] = { miscscrn, &info_menu, &system_menu },
 417     [GO_TO_SHORTCUTMENU] = { do_shortcut_menu, NULL, NULL },
 418
 419 };
 420 static const int nb_items = sizeof(items)/sizeof(*items);
 421
 422 static int item_callback(int action, const struct menu_item_ex *this_item) ;
 423
 424 MENUITEM_RETURNVALUE(shortcut_menu, ID2P(LANG_SHORTCUTS), GO_TO_SHORTCUTMENU,
 425                         NULL, Icon_Bookmark);
 426
 427 MENUITEM_RETURNVALUE(file_browser, ID2P(LANG_DIR_BROWSER), GO_TO_FILEBROWSER,
 428                         NULL, Icon_file_view_menu);
 429 #ifdef HAVE_TAGCACHE
 430 MENUITEM_RETURNVALUE(db_browser, ID2P(LANG_TAGCACHE), GO_TO_DBBROWSER,
 431                         NULL, Icon_Audio);
 432 #endif
 433 MENUITEM_RETURNVALUE(rocks_browser, ID2P(LANG_PLUGINS), GO_TO_BROWSEPLUGINS,
 434                         NULL, Icon_Plugin);
 435
 436 MENUITEM_RETURNVALUE(playlist_browser, ID2P(LANG_CATALOG), GO_TO_PLAYLIST_VIEWER,
 437                         NULL, Icon_Playlist);
 438
 439 static char *get_wps_item_name(int selected_item, void * data, char *buffer)
 440 {
 441     (void)selected_item; (void)data; (void)buffer;
 442     if (audio_status())
 443         return ID2P(LANG_NOW_PLAYING);
 444     return ID2P(LANG_RESUME_PLAYBACK);
 445 }
 446 MENUITEM_RETURNVALUE_DYNTEXT(wps_item, GO_TO_WPS, NULL, get_wps_item_name,
 447                                 NULL, NULL, Icon_Playback_menu);
 448 #ifdef HAVE_RECORDING
 449 MENUITEM_RETURNVALUE(rec, ID2P(LANG_RECORDING), GO_TO_RECSCREEN,
 450                         NULL, Icon_Recording);
 451 #endif
 452 #if CONFIG_TUNER
 453 MENUITEM_RETURNVALUE(fm, ID2P(LANG_FM_RADIO), GO_TO_FM,
 454                         item_callback, Icon_Radio_screen);
 455 #endif
 456 MENUITEM_RETURNVALUE(menu_, ID2P(LANG_SETTINGS), GO_TO_MAINMENU,
 457                         NULL, Icon_Submenu_Entered);
 458 MENUITEM_RETURNVALUE(bookmarks, ID2P(LANG_BOOKMARK_MENU_RECENT_BOOKMARKS),
 459                         GO_TO_RECENTBMARKS,  item_callback,
 460                         Icon_Bookmark);
 461 MENUITEM_RETURNVALUE(playlists, ID2P(LANG_CATALOG), GO_TO_PLAYLISTS_SCREEN,
 462                      NULL, Icon_Playlist);
 463 MENUITEM_RETURNVALUE(system_menu_, ID2P(LANG_SYSTEM), GO_TO_SYSTEM_SCREEN,
 464                      NULL, Icon_System_menu);
 465
 466 #if CONFIG_KEYPAD == PLAYER_PAD
 467 static int do_shutdown(void)
 468 {
 469 #if CONFIG_CHARGING
 470     if (charger_inserted())
 471         charging_splash();
 472     else
 473 #endif
 474         sys_poweroff();
 475     return 0;
 476 }
 477 MENUITEM_FUNCTION(do_shutdown_item, 0, ID2P(LANG_SHUTDOWN),
 478                   do_shutdown, NULL, NULL, Icon_NOICON);
 479 #endif
 480
 481 struct menu_item_ex root_menu_;
 482 static struct menu_callback_with_desc root_menu_desc = {
 483         item_callback, ID2P(LANG_ROCKBOX_TITLE), Icon_Rockbox };
 484 struct menu_table {
 485     char *string;
 486     const struct menu_item_ex *item;
 487 };
 488 static struct menu_table menu_table[] = {
 489     /* Order here represents the default ordering */
 490     { "bookmarks", &bookmarks },
 491     { "files", &file_browser },
 492 #ifdef HAVE_TAGCACHE
 493     { "database", &db_browser },
 494 #endif
 495     { "wps", &wps_item },
 496     { "settings", &menu_ },
 497 #ifdef HAVE_RECORDING
 498     { "recording", &rec },
 499 #endif
 500 #if CONFIG_TUNER
 501     { "radio", &fm },
 502 #endif
 503     { "playlists", &playlists },
 504     { "plugins", &rocks_browser },
 505     { "system_menu", &system_menu_ },
 506 #if CONFIG_KEYPAD == PLAYER_PAD
 507     { "shutdown", &do_shutdown_item },
 508 #endif
 509     { "shortcuts", &shortcut_menu },
 510 };
 511 #define MAX_MENU_ITEMS (sizeof(menu_table) / sizeof(struct menu_table))
 512 static struct menu_item_ex *root_menu__[MAX_MENU_ITEMS];
 513
 514 void root_menu_load_from_cfg(void* setting, char *value)
 515 {
 516     char *next = value, *start;
 517     unsigned int menu_item_count = 0, i;
 518     bool main_menu_added = false;
 519
 520     if (*value == '-')
 521     {
 522         root_menu_set_default(setting, NULL);
 523         return;
 524     }
 525     root_menu_.flags = MENU_HAS_DESC | MT_MENU;
 526     root_menu_.submenus = (const struct menu_item_ex **)&root_menu__;
 527     root_menu_.callback_and_desc = &root_menu_desc;
 528
 529     while (next && menu_item_count < MAX_MENU_ITEMS)
 530     {
 531         start = next;
 532         next = strchr(next, ',');
 533         if (next)
 534         {
 535             *next = '\0';
 536             next++;
 537         }
 538         for (i=0; i<MAX_MENU_ITEMS; i++)
 539         {
 540             if (*start && !strcmp(start, menu_table[i].string))
 541             {
 542                 root_menu__[menu_item_count++] = (struct menu_item_ex *)menu_table[i].item;
 543                 if (menu_table[i].item == &menu_)
 544                     main_menu_added = true;
 545                 break;
 546             }
 547         }
 548     }
 549     if (!main_menu_added)
 550         root_menu__[menu_item_count++] = (struct menu_item_ex *)&menu_;
 551     root_menu_.flags |= MENU_ITEM_COUNT(menu_item_count);
 552     *(bool*)setting = true;
 553 }
 554
 555 char* root_menu_write_to_cfg(void* setting, char*buf, int buf_len)
 556 {
 557     (void)setting;
 558     unsigned i, written, j;
 559     for (i = 0; i < MENU_GET_COUNT(root_menu_.flags); i++)
 560     {
 561         for (j=0; j<MAX_MENU_ITEMS; j++)
 562         {
 563             if (menu_table[j].item == root_menu__[i])
 564             {
 565                 written = snprintf(buf, buf_len, "%s,", menu_table[j].string);
 566                 buf_len -= written;
 567                 buf += written;
 568                 break;
 569             }
 570         }
 571     }
 572     return buf;
 573 }
 574
 575 void root_menu_set_default(void* setting, void* defaultval)
 576 {
 577     unsigned i;
 578     (void)defaultval;
 579
 580     root_menu_.flags = MENU_HAS_DESC | MT_MENU;
 581     root_menu_.submenus = (const struct menu_item_ex **)&root_menu__;
 582     root_menu_.callback_and_desc = &root_menu_desc;
 583
 584     for (i=0; i<MAX_MENU_ITEMS; i++)
 585     {
 586         root_menu__[i] = (struct menu_item_ex *)menu_table[i].item;
 587     }
 588     root_menu_.flags |= MENU_ITEM_COUNT(MAX_MENU_ITEMS);
 589     *(bool*)setting = false;
 590 }
 591
 592 bool root_menu_is_changed(void* setting, void* defaultval)
 593 {
 594     (void)defaultval;
 595     return *(bool*)setting;
 596 }
 597
 598 static int item_callback(int action, const struct menu_item_ex *this_item)
 599 {
 600     switch (action)
 601     {
 602         case ACTION_TREE_STOP:
 603             return ACTION_REDRAW;
 604         case ACTION_REQUEST_MENUITEM:
 605 #if CONFIG_TUNER
 606             if (this_item == &fm)
 607             {
 608                 if (radio_hardware_present() == 0)
 609                     return ACTION_EXIT_MENUITEM;
 610             }
 611             else
 612 #endif
 613                 if (this_item == &bookmarks)
 614             {
 615                 if (global_settings.usemrb == 0)
 616                     return ACTION_EXIT_MENUITEM;
 617             }
 618         break;
 619     }
 620     return action;
 621 }
 622 static int get_selection(int last_screen)
 623 {
 624     int i;
 625     int len = ARRAYLEN(root_menu__);
 626     for(i=0; i < len; i++)
 627     {
 628         if (((root_menu__[i]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE) &&
 629             (root_menu__[i]->value == last_screen))
 630         {
 631             return i;
 632         }
 633     }
 634     return 0;
 635 }
 636
 637 static inline int load_screen(int screen)
 638 {
 639     /* set the global_status.last_screen before entering,
 640         if we dont we will always return to the wrong screen on boot */
 641     int old_previous = last_screen;
 642     int ret_val;
 643     enum current_activity activity = ACTIVITY_UNKNOWN;
 644     if (screen <= GO_TO_ROOT)
 645         return screen;
 646     if (screen == old_previous)
 647         old_previous = GO_TO_ROOT;
 648     global_status.last_screen = (char)screen;
 649     status_save();
 650
 651     if (screen == GO_TO_BROWSEPLUGINS)
 652         activity = ACTIVITY_PLUGINBROWSER;
 653     else if (screen == GO_TO_MAINMENU)
 654         activity = ACTIVITY_SETTINGS;
 655     else if (screen == GO_TO_SYSTEM_SCREEN)
 656         activity =  ACTIVITY_SYSTEMSCREEN;
 657
 658     if (activity != ACTIVITY_UNKNOWN)
 659         push_current_activity(activity);
 660
 661     ret_val = items[screen].function(items[screen].param);
 662
 663     if (activity != ACTIVITY_UNKNOWN)
 664         pop_current_activity();
 665
 666     last_screen = screen;
 667     if (ret_val == GO_TO_PREVIOUS)
 668         last_screen = old_previous;
 669     return ret_val;
 670 }
 671 static int load_context_screen(int selection)
 672 {
 673     const struct menu_item_ex *context_menu = NULL;
 674     int retval = GO_TO_PREVIOUS;
 675     push_current_activity(ACTIVITY_CONTEXTMENU);
 676     if ((root_menu__[selection]->flags&MENU_TYPE_MASK) == MT_RETURN_VALUE)
 677     {
 678         int item = root_menu__[selection]->value;
 679         context_menu = items[item].context_menu;
 680     }
 681     /* special cases */
 682     else if (root_menu__[selection] == &info_menu)
 683     {
 684         context_menu = &system_menu;
 685     }
 686
 687     if (context_menu)
 688         retval = do_menu(context_menu, NULL, NULL, false);
 689     pop_current_activity();
 690     return retval;
 691 }
 692
 693 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 694 static int load_plugin_screen(char *plug_path)
 695 {
 696     int ret_val;
 697     int old_previous = last_screen;
 698     last_screen = next_screen;
 699     global_status.last_screen = (char)next_screen;
 700     status_save();
 701
 702     switch (plugin_load(plug_path, NULL))
 703     {
 704     case PLUGIN_GOTO_WPS:
 705         ret_val = GO_TO_WPS;
 706         break;
 707     case PLUGIN_OK:
 708         ret_val = audio_status() ? GO_TO_PREVIOUS : GO_TO_ROOT;
 709         break;
 710     default:
 711         ret_val = GO_TO_PREVIOUS;
 712         break;
 713     }
 714
 715     if (ret_val == GO_TO_PREVIOUS)
 716         last_screen = (old_previous == next_screen) ? GO_TO_ROOT : old_previous;
 717     return ret_val;
 718 }
 719 #endif
 720
 721 static int previous_music = GO_TO_WPS;
 722
 723 void previous_music_is_wps(void)
 724 {
 725     previous_music = GO_TO_WPS;
 726 }
 727
 728 void root_menu(void)
 729 {
 730     int previous_browser = GO_TO_FILEBROWSER;
 731     int selected = 0;
 732
 733     push_current_activity(ACTIVITY_MAINMENU);
 734
 735     if (global_settings.start_in_screen == 0)
 736         next_screen = (int)global_status.last_screen;
 737     else next_screen = global_settings.start_in_screen - 2;
 738     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, rootmenu_track_changed_callback);
 739 #ifdef HAVE_RTC_ALARM
 740     if ( rtc_check_alarm_started(true) )
 741     {
 742         rtc_enable_alarm(false);
 743         next_screen = GO_TO_WPS;
 744 #if CONFIG_TUNER
 745         if (global_settings.alarm_wake_up_screen == ALARM_START_FM)
 746             next_screen = GO_TO_FM;
 747 #endif
 748 #ifdef HAVE_RECORDING
 749         if (global_settings.alarm_wake_up_screen == ALARM_START_REC)
 750         {
 751             recording_start_automatic = true;
 752             next_screen = GO_TO_RECSCREEN;
 753         }
 754 #endif
 755     }
 756 #endif /* HAVE_RTC_ALARM */
 757
 758 #ifdef HAVE_HEADPHONE_DETECTION
 759     if (next_screen == GO_TO_WPS &&
 760         (global_settings.unplug_autoresume && !headphones_inserted() ))
 761             next_screen = GO_TO_ROOT;
 762 #endif
 763
 764     while (true)
 765     {
 766         switch (next_screen)
 767         {
 768             case MENU_ATTACHED_USB:
 769             case MENU_SELECTED_EXIT:
 770                 /* fall through */
 771             case GO_TO_ROOT:
 772                 if (last_screen != GO_TO_ROOT)
 773                     selected = get_selection(last_screen);
 774 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
 775                 /* When we are in the main menu we want the hardware BACK
 776                  * button to be handled by Android instead of rockbox */
 777                 android_ignore_back_button(true);
 778 #endif
 779                 next_screen = do_menu(&root_menu_, &selected, NULL, false);
 780 #if (CONFIG_PLATFORM&PLATFORM_ANDROID)
 781                 android_ignore_back_button(false);
 782 #endif
 783                 if (next_screen != GO_TO_PREVIOUS)
 784                     last_screen = GO_TO_ROOT;
 785                 break;
 786
 787             case GO_TO_PREVIOUS:
 788                 next_screen = last_screen;
 789                 break;
 790
 791             case GO_TO_PREVIOUS_BROWSER:
 792                 next_screen = previous_browser;
 793                 break;
 794
 795             case GO_TO_PREVIOUS_MUSIC:
 796                 next_screen = previous_music;
 797                 break;
 798             case GO_TO_ROOTITEM_CONTEXT:
 799                 next_screen = load_context_screen(selected);
 800                 break;
 801 #ifdef HAVE_PICTUREFLOW_INTEGRATION
 802             case GO_TO_PICTUREFLOW:
 803                 while ( !tagcache_is_usable() )
 804                 {
 805                     splash(0, str(LANG_TAGCACHE_BUSY));
 806                     if ( action_userabort(HZ/5) )
 807                         break;
 808                 }
 809                 {
 810                     char pf_path[MAX_PATH];
 811                     snprintf(pf_path, sizeof(pf_path),
 812                             "%s/pictureflow.rock",
 813                             PLUGIN_DEMOS_DIR);
 814                     next_screen = load_plugin_screen(pf_path);
 815                 }
 816                 previous_browser = GO_TO_PICTUREFLOW;
 817                 break;
 818 #endif
 819             default:
 820                 if (next_screen == GO_TO_FILEBROWSER
 821 #ifdef HAVE_TAGCACHE
 822                     || next_screen == GO_TO_DBBROWSER
 823 #endif
 824                    )
 825                     previous_browser = next_screen;
 826                 if (next_screen == GO_TO_WPS
 827 #if CONFIG_TUNER
 828                     || next_screen == GO_TO_FM
 829 #endif
 830                    )
 831                     previous_music = next_screen;
 832                 next_screen = load_screen(next_screen);
 833                 break;
 834         } /* switch() */
 835     }
 836 }