Change the way how playlists and system menu items in the main menu are internally invoked so that the mechanism to

pass the back button press to the android system (to let it go to the home screen) works for them.
This fixes that the back button goes still to the home screen after entering these items.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29157 a1c6a512-1295-4272-9138-f99709370657

apps/menu.c

@@ -327,7 +327,7 @@ int do_menu(const struct menu_item_ex *start_menu, int *start_selected,
     int selected = start_selected? *start_selected : 0;
     int action;
     struct gui_synclist lists;
-    const struct menu_item_ex *temp, *menu;
+    const struct menu_item_ex *temp, *menu = start_menu;
     int ret = 0, i;
     bool redraw_lists;
     int old_audio_status = audio_status();
@@ -347,9 +347,6 @@ int do_menu(const struct menu_item_ex *start_menu, int *start_selected,
 #endif
 
     menu_callback_type menu_callback = NULL;
-    if (start_menu == NULL)
-        menu = &main_menu_;
-    else menu = start_menu;
 
     /* if hide_theme is true, assume parent has been fixed before passed into
      * this function, e.g. with viewport_set_defaults(parent, screen) */

apps/menus/exported_menus.h

@@ -26,7 +26,6 @@
 #ifndef PLUGIN 
 
 extern const struct menu_item_ex 
-        main_menu_,                 /* main_menu.c      */
         display_menu,               /* display_menu.c   */
         playback_settings,          /* playback_menu.c  */
 #ifdef HAVE_RECORDING
@@ -38,12 +37,10 @@ extern const struct menu_item_ex
         sound_settings,             /* sound_menu.c     */
         settings_menu_item,         /* settings_menu.c  */
         playlist_settings,          /* playlist_menu.c  */
-        playlist_options,           /* playlist_menu.c  */
         equalizer_menu,             /* eq_menu.c        */
 #ifdef AUDIOHW_HAVE_EQ
         audiohw_eq_tone_controls,   /* audiohw_eq_menu.c */
 #endif
-        info_menu,                  /* info_menu.c      */
         theme_menu;                 /* theme_menu.c     */
 
 struct browse_folder_info {

apps/root_menu.c

@@ -271,14 +271,8 @@ static int browser(void* param)
 #endif
     }
     return ret_val;
-}  
-
-static int menu(void* param)
-{
-    (void)param;
-    return do_menu(NULL, 0, NULL, false);
-    
 }
+
 #ifdef HAVE_RECORDING
 static int recscrn(void* param)
 {
@@ -323,6 +317,18 @@ static int radio(void* param)
 }
 #endif
 
+static int miscscrn(void * param)
+{
+    const struct menu_item_ex *menu = (const struct menu_item_ex*)param;
+    switch (do_menu(menu, NULL, NULL, false))
+    {
+        case GO_TO_PLAYLIST_VIEWER:
+            return GO_TO_PLAYLIST_VIEWER;
+        default:
+            return GO_TO_ROOT;
+    }
+}
+    
 static int playlist_view(void * param)
 {
     (void)param;
@@ -391,10 +397,13 @@ extern struct menu_item_ex
 #ifdef HAVE_TAGCACHE
         tagcache_menu,
 #endif
+        main_menu_,
         manage_settings,
         recording_settings_menu,
         radio_settings_menu,
         bookmark_settings_menu,
+        playlist_options,
+        info_menu,
         system_menu;
 static const struct root_items items[] = {
     [GO_TO_FILEBROWSER] =   { browser, (void*)GO_TO_FILEBROWSER, &file_menu},
@@ -402,7 +411,8 @@ static const struct root_items items[] = {
     [GO_TO_DBBROWSER] =     { browser, (void*)GO_TO_DBBROWSER, &tagcache_menu },
 #endif
     [GO_TO_WPS] =           { wpsscrn, NULL, &playback_settings },
-    [GO_TO_MAINMENU] =      { menu, NULL, &manage_settings },
+    [GO_TO_MAINMENU] =      { miscscrn, (struct menu_item_ex*)&main_menu_,
+                                                            &manage_settings },
     
 #ifdef HAVE_RECORDING
     [GO_TO_RECSCREEN] =     {  recscrn, NULL, &recording_settings_menu },
@@ -414,7 +424,9 @@ static const struct root_items items[] = {
     
     [GO_TO_RECENTBMARKS] =  { load_bmarks, NULL, &bookmark_settings_menu }, 
     [GO_TO_BROWSEPLUGINS] = { plugins_menu, NULL, NULL },
+    [GO_TO_PLAYLISTS_SCREEN]     = { miscscrn, &playlist_options, NULL },
     [GO_TO_PLAYLIST_VIEWER] = { playlist_view, NULL, NULL },
+    [GO_TO_SYSTEM_SCREEN] = { miscscrn, &info_menu, &system_menu },
     
 };
 static const int nb_items = sizeof(items)/sizeof(*items);
@@ -451,6 +463,11 @@ MENUITEM_RETURNVALUE(menu_, ID2P(LANG_SETTINGS), GO_TO_MAINMENU,
 MENUITEM_RETURNVALUE(bookmarks, ID2P(LANG_BOOKMARK_MENU_RECENT_BOOKMARKS),
                         GO_TO_RECENTBMARKS,  item_callback, 
                         Icon_Bookmark);
+MENUITEM_RETURNVALUE(playlists, ID2P(LANG_PLAYLISTS), GO_TO_PLAYLISTS_SCREEN,
+                     NULL, Icon_Playlist);
+MENUITEM_RETURNVALUE(system_menu_, ID2P(LANG_SYSTEM), GO_TO_SYSTEM_SCREEN,
+                     NULL, Icon_System_menu);
+
 #ifdef HAVE_LCD_CHARCELLS
 static int do_shutdown(void)
 {
@@ -478,7 +495,7 @@ MAKE_MENU(root_menu_, ID2P(LANG_ROCKBOX_TITLE),
 #if CONFIG_TUNER
             &fm,
 #endif
-            &playlist_options, &rocks_browser,  &info_menu
+            &playlists, &rocks_browser,  &system_menu_
 
 #ifdef HAVE_LCD_CHARCELLS
             ,&do_shutdown_item

apps/root_menu.h

@@ -55,7 +55,9 @@ enum {
        will need editing if this is the case. */
     GO_TO_BROWSEPLUGINS,
     GO_TO_TIMESCREEN,
+    GO_TO_PLAYLISTS_SCREEN,
     GO_TO_PLAYLIST_VIEWER,
+    GO_TO_SYSTEM_SCREEN,
 };
 
 extern const struct menu_item_ex root_menu_;