Remade the menu system slightly. All functions invoked from menus now use

the Menu typedef as return type, and *ALL* menus that intercept USB connect
can then return MENU_REFRESH_DIR so that the parent (any parent really) that
do file or dir-accesses knows that and can do the refresh. If no refresh
is needed by the parent, MENU_OK is returned.

Somewhat biggish commit this close to 1.3, but we need to sort out this
refresh-after-usb-connected business.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1948 a1c6a512-1295-4272-9138-f99709370657

23 files changed, 175 insertions, 89 deletions

diff --git a/apps/Makefile b/apps/Makefile
index e375cb9b1d..8ec3b0a581 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -15,7 +15,7 @@ OC    = sh-elf-objcopy
 
 FIRMWARE := ../firmware
 
-INCLUDES= -I$(FIRMWARE)/include -I$(FIRMWARE) -I$(FIRMWARE)/common -I$(FIRMWARE)/drivers -I$(FIRMWARE)/malloc
+INCLUDES= -I$(FIRMWARE)/include -I$(FIRMWARE) -I$(FIRMWARE)/common -I$(FIRMWARE)/drivers -I$(FIRMWARE)/malloc -I.
 
 # Pick a target to build for
 #TARGET = -DARCHOS_PLAYER=1
diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index 44079a789d..ed5e8268ea 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -82,7 +82,7 @@ void dbg_os(void)
     }
 }
 #else
-void dbg_os(void)
+Menu dbg_os(void)
 {
     char buf[32];
     int button;
@@ -109,7 +109,7 @@ void dbg_os(void)
         switch(button)
         {
         case BUTTON_STOP:
-            return;
+            return MENU_OK;
 
             case BUTTON_LEFT:
             currval--;
@@ -124,12 +124,13 @@ void dbg_os(void)
             break;
         }
     }
+    return MENU_OK;
 }
 #endif
 
 #ifdef HAVE_LCD_BITMAP
 /* Test code!!! */
-void dbg_ports(void)
+Menu dbg_ports(void)
 {
     unsigned short porta;
     unsigned short portb;
@@ -199,12 +200,13 @@ void dbg_ports(void)
             case BUTTON_LEFT:
                 charger_enable(false);
                 ide_power_enable(true);
-                return;
+                return MENU_OK;
         }
     }
+    return MENU_OK;
 }
 #else
-void dbg_ports(void)
+Menu dbg_ports(void)
 {
     unsigned short porta;
     unsigned short portb;
@@ -280,7 +282,7 @@ void dbg_ports(void)
         switch(button)
         {
         case BUTTON_STOP:
-            return;
+            return MENU_OK;
 
         case BUTTON_LEFT:
             currval--;
@@ -295,12 +297,13 @@ void dbg_ports(void)
             break;
         }
     }
+    return MENU_OK;
 }
 #endif
 
 #ifdef HAVE_RTC
 /* Read RTC RAM contents and display them */
-void dbg_rtc(void)
+Menu dbg_rtc(void)
 {
     char buf[32];
     unsigned char addr = 0, r, c;
@@ -344,14 +347,15 @@ void dbg_rtc(void)
             break;
         case BUTTON_OFF:
         case BUTTON_LEFT:
-            return;
+            return MENU_OK;
         }
     }
+    return MENU_OK;
 }
 #else
-void dbg_rtc(void)
+Menu dbg_rtc(void)
 {
-    return;
+    return MENU_OK;
 }
 #endif
 
@@ -361,7 +365,7 @@ void dbg_rtc(void)
 #define NUMROWS 4
 #endif
 /* Read MAS registers and display them */
-void dbg_mas(void)
+Menu dbg_mas(void)
 {
     char buf[32];
     unsigned int addr = 0, r, i;
@@ -405,13 +409,14 @@ void dbg_mas(void)
 #else
         case BUTTON_DOWN:
 #endif
-            return;
+            return MENU_OK;
         }
     }
+    return MENU_OK;
 }
 
 #ifdef HAVE_MAS3587F
-void dbg_mas_codec(void)
+Menu dbg_mas_codec(void)
 {
     char buf[32];
     unsigned int addr = 0, r, i;
@@ -442,9 +447,10 @@ void dbg_mas_codec(void)
             if (addr) { addr -= 4; }
             break;
         case BUTTON_LEFT:
-            return;
+            return MENU_OK;
         }
     }
+    return MENU_OK;
 }
 #endif
 
@@ -458,7 +464,7 @@ void dbg_mas_codec(void)
 #define BAT_FIRST_VAL  MAX(POWER_HISTORY_LEN - LCD_WIDTH - 1, 0)
 #define BAT_YSPACE    (LCD_HEIGHT - 20)
 
-void view_battery(void)
+Menu view_battery(void)
 {
     int view = 0;
     int i, x, y;
@@ -579,15 +585,16 @@ void view_battery(void)
                 
             case BUTTON_LEFT:
             case BUTTON_OFF:
-                return;
+                return MENU_OK;
         }
     }
+    return MENU_OK;
 }
 
 #endif
 
 #ifdef HAVE_MAS3507D
-void dbg_mas_info(void)
+Menu dbg_mas_info(void)
 {
     int button;
     char buf[32];
@@ -721,7 +728,7 @@ void dbg_mas_info(void)
         switch(button)
         {
         case BUTTON_STOP:
-            return;
+            return MENU_OK;
 
         case BUTTON_LEFT:
             currval--;
@@ -757,12 +764,14 @@ void dbg_mas_info(void)
             break;
         }
     }
+    return MENU_OK;
 }
 #endif
 
-void debug_menu(void)
+Menu debug_menu(void)
 {
     int m;
+    Menu result;
 
     struct menu_items items[] = {
         { "View I/O ports", dbg_ports },
@@ -785,8 +794,10 @@ void debug_menu(void)
     };
 
     m=menu_init( items, sizeof items / sizeof(struct menu_items) );
-    menu_run(m);
+    result = menu_run(m);
     menu_exit(m);
+    
+    return result;
 }
 
 #endif /* SIMULATOR */
diff --git a/apps/debug_menu.h b/apps/debug_menu.h
index 78b344bce3..5dcc3ac183 100644
--- a/apps/debug_menu.h
+++ b/apps/debug_menu.h
@@ -19,12 +19,12 @@
 #ifndef _DEBUG_MENU_H
 #define _DEBUG_MENU_H
 
-void debug_menu(void);
+Menu debug_menu(void);
 
 #ifndef SIMULATOR
-extern void dbg_ports(void);
+extern Menu dbg_ports(void);
 #ifdef HAVE_RTC
-extern void dbg_rtc(void);
+extern Menu dbg_rtc(void);
 #endif
 #endif
 
diff --git a/apps/games_menu.c b/apps/games_menu.c
index 1d30fbbcce..3850a4f0ab 100644
--- a/apps/games_menu.c
+++ b/apps/games_menu.c
@@ -29,11 +29,12 @@
 #include "sprintf.h"
 
 #include "sokoban.h"
-extern void tetris(void);
+extern Menu tetris(void);
 
-void games_menu(void)
+Menu games_menu(void)
 {
     int m;
+    Menu result;
 
     struct menu_items items[] = {
         { "Tetris", tetris },
@@ -41,10 +42,10 @@ void games_menu(void)
     };
 
     m=menu_init( items, sizeof items / sizeof(struct menu_items) );
-    menu_run(m);
+    result = menu_run(m);
     menu_exit(m);
+
+    return result;
 }
 
 #endif
-
-
diff --git a/apps/games_menu.h b/apps/games_menu.h
index 861c27bfac..a179a2a8ea 100644
--- a/apps/games_menu.h
+++ b/apps/games_menu.h
@@ -19,6 +19,8 @@
 #ifndef _GAMES_MENU_H
 #define _GAMES_MENU_H
 
-void games_menu(void);
+#include "menu.h"
+
+Menu games_menu(void);
 
 #endif
diff --git a/apps/main_menu.c b/apps/main_menu.c
index 2cb9bda9bd..885deea6c4 100644
--- a/apps/main_menu.c
+++ b/apps/main_menu.c
@@ -105,7 +105,7 @@ int show_logo( void )
     return 0;
 }
 
-void show_credits(void)
+Menu show_credits(void)
 {
     int j = 0;
     int btn;
@@ -120,22 +120,23 @@ void show_credits(void)
 
         btn = button_get(false);
         if (btn !=  BUTTON_NONE && !(btn & BUTTON_REL))
-            return;
+            return MENU_OK;
     }
     roll_credits();
+    return MENU_OK;
 }
 
 #ifdef SIMULATOR
 #define mp3buf 0
 #define mp3end 0
 
-extern void simulate_usb(void);
+extern Menu simulate_usb(void);
 #else
 /* defined in linker script */
 extern unsigned char mp3buf[];
 extern unsigned char mp3end[];
 #endif
-void show_info(void)
+Menu show_info(void)
 {
     char s[32];
     int buflen = ((mp3end - mp3buf) * 100) / 0x100000;
@@ -181,11 +182,14 @@ void show_info(void)
         if(button_get(false) & ~BUTTON_REL)
             done = true;
     }
+
+    return MENU_OK;
 }
 
-void main_menu(void)
+Menu main_menu(void)
 {
     int m;
+    Menu result;
 
     /* main menu */
     struct menu_items items[] = {
@@ -208,11 +212,13 @@ void main_menu(void)
 #ifdef HAVE_LCD_CHARCELLS
     lcd_icon(ICON_PARAM, true);
 #endif
-    menu_run(m);
+    result = menu_run(m);
 #ifdef HAVE_LCD_CHARCELLS
     lcd_icon(ICON_PARAM, false);
 #endif
     menu_exit(m);
 
     settings_save();
+
+    return result;
 }
diff --git a/apps/main_menu.h b/apps/main_menu.h
index 54cc6023c7..8efcd6f380 100644
--- a/apps/main_menu.h
+++ b/apps/main_menu.h
@@ -19,7 +19,9 @@
 #ifndef _MAIN_MENU_H
 #define _MAIN_MENU_H
 
+#include "menu.h"
+
 extern int show_logo(void);
-extern void main_menu(void);
+extern Menu main_menu(void);
 
 #endif
diff --git a/apps/menu.c b/apps/menu.c
index 418ccf309d..b0060f4df4 100644
--- a/apps/menu.c
+++ b/apps/menu.c
@@ -212,13 +212,14 @@ void menu_exit(int m)
     inuse[m] = false;
 }
 
-void menu_run(int m)
+Menu menu_run(int m)
 {
 #ifndef SIMULATOR
 #ifdef HAVE_LCD_BITMAP
     bool laststate;
 #endif
 #endif
+    Menu result = MENU_OK;
 
     menu_draw(m);
 
@@ -273,7 +274,7 @@ void menu_run(int m)
             case BUTTON_MENU:
 #endif
                 lcd_stop_scroll();
-                return;
+                return result;
 
 #ifdef HAVE_RECORDER_KEYPAD
             case BUTTON_F3:
@@ -298,6 +299,7 @@ void menu_run(int m)
 #else
                 lcd_icon(ICON_PARAM, true);
 #endif
+                result = MENU_REFRESH_DIR;
                 break;
 #endif
 
@@ -308,4 +310,6 @@ void menu_run(int m)
         status_draw();
         lcd_update();
     }
+
+    return result;
 }
diff --git a/apps/menu.h b/apps/menu.h
index 0871e502c8..fc962c79aa 100644
--- a/apps/menu.h
+++ b/apps/menu.h
@@ -22,15 +22,23 @@
 
 #include <stdbool.h>
 
+typedef enum {
+  MENU_OK,
+  MENU_REFRESH_DIR, /* any file/directory contents need to be re-read */
+  MENU_LAST /* don't use as return code, only for number of return codes
+               available */
+} Menu;
+
 struct menu_items {
     char *desc;
-    void (*function) (void);
+    Menu (*function) (void);
 };
 
 int menu_init(struct menu_items* items, int count);
 void menu_exit(int menu);
-void menu_run(int menu);
 
 void put_cursorxy(int x, int y, bool on);
 
+Menu menu_run(int menu);
+
 #endif /* End __MENU_H__ */
diff --git a/apps/recorder/blank.c b/apps/recorder/blank.c
index 835420f63b..2c59ec66bc 100644
--- a/apps/recorder/blank.c
+++ b/apps/recorder/blank.c
@@ -24,6 +24,7 @@
 #include "lcd.h"
 #include "button.h"
 #include "kernel.h"
+#include "menu.h"
 
 #ifdef SIMULATOR
 #include <stdio.h>
@@ -33,7 +34,7 @@
 #define SS_TITLE       "Blank"
 #define SS_TITLE_FONT  2
 
-void blank(void)
+Menu blank(void)
 {
     int w, h;
     char *off = "[Off] to stop";
@@ -76,15 +77,16 @@ void blank(void)
     lcd_update();
     sleep(HZ);
 
-        lcd_clear_display();
+    lcd_clear_display();
     lcd_update();
 
-        while(1) {
-                if(button_get(false))
-                        return;
+    while(1) {
+        if(button_get(false))
+            return MENU_OK;
         sleep(HZ/10);
-        }
-
+    }
+    
+    return MENU_OK;
 }
 
 #endif
diff --git a/apps/recorder/bounce.c b/apps/recorder/bounce.c
index 6b500964f0..cb080a0d00 100644
--- a/apps/recorder/bounce.c
+++ b/apps/recorder/bounce.c
@@ -24,6 +24,7 @@
 #include "lcd.h"
 #include "button.h"
 #include "kernel.h"
+#include "menu.h"
 
 #ifdef SIMULATOR
 #include <stdio.h>
@@ -83,7 +84,7 @@ static void loopit(void)
 }
 
 
-void bounce(void)
+Menu bounce(void)
 {
     int w, h;
     char *off = "[Off] to stop";
@@ -126,6 +127,8 @@ void bounce(void)
     lcd_update();
     sleep(HZ);
     loopit();
+
+    return MENU_OK;
 }
 
 #endif
diff --git a/apps/recorder/boxes.c b/apps/recorder/boxes.c
index 6b6d0065c9..60fdef6f9b 100644
--- a/apps/recorder/boxes.c
+++ b/apps/recorder/boxes.c
@@ -25,6 +25,7 @@
 #include "lcd.h"
 #include "button.h"
 #include "kernel.h"
+#include "menu.h"
 
 #ifdef SIMULATOR
 #include <stdio.h>
@@ -82,7 +83,7 @@ static void ss_loop(void)
     }
 }
 
-void boxes(void)
+Menu boxes(void)
 {
     int w, h;
     char *off = "[Off] to stop";
@@ -125,6 +126,8 @@ void boxes(void)
     lcd_update();
     sleep(HZ/2);
     ss_loop();
+
+    return MENU_OK;
 }
 
 #endif
diff --git a/apps/recorder/boxes.h b/apps/recorder/boxes.h
index bf3e095a65..2defb0bbfc 100644
--- a/apps/recorder/boxes.h
+++ b/apps/recorder/boxes.h
@@ -20,7 +20,9 @@
 #ifndef __BOXES_H__
 #define __BOXES_H__
 
-void boxes(void);
+#include "menu.h"
+
+Menu boxes(void);
 
 #endif /* __BOXES_H__ */
 
diff --git a/apps/recorder/sokoban.c b/apps/recorder/sokoban.c
index 2795d745e6..6ce19e6a41 100644
--- a/apps/recorder/sokoban.c
+++ b/apps/recorder/sokoban.c
@@ -23,6 +23,7 @@
 #include "lcd.h"
 #include "button.h"
 #include "kernel.h"
+#include "menu.h"
 
 #ifdef SIMULATOR
 #include <stdio.h>
@@ -1334,7 +1335,7 @@ void sokoban_loop(void) {
 }
 
 
-void sokoban(void)
+Menu sokoban(void)
 {
     int w, h;
     int len = strlen(SOKOBAN_TITLE);
@@ -1371,4 +1372,6 @@ void sokoban(void)
     sleep(HZ*2);
     lcd_clear_display();
     sokoban_loop();
+
+    return MENU_OK;
 }
diff --git a/apps/recorder/sokoban.h b/apps/recorder/sokoban.h
index 8e6c54c43e..ee1398c011 100644
--- a/apps/recorder/sokoban.h
+++ b/apps/recorder/sokoban.h
@@ -20,10 +20,12 @@
 #ifndef __SOKOBAN__
 #define __SOKOBAN__
 
+#include "menu.h"
+
 void load_level(int);
 void update_screen(void);
 void sokoban_loop(void);
-void sokoban(void);
+Menu sokoban(void);
 
 #endif /*__SOKOBAN__ */
 
diff --git a/apps/recorder/tetris.c b/apps/recorder/tetris.c
index 76d1940889..910374920f 100644
--- a/apps/recorder/tetris.c
+++ b/apps/recorder/tetris.c
@@ -27,6 +27,7 @@
 #include "button.h"
 #include "kernel.h"
 #include <string.h>
+#include "menu.h"
 
 #ifdef SIMULATOR
 #include <stdio.h>
@@ -388,7 +389,7 @@ void init_tetris(void)
     next_f = 0;
 }
 
-void tetris(void)
+Menu tetris(void)
 {
     init_tetris();
 
@@ -400,6 +401,8 @@ void tetris(void)
     next_f = t_rand(block_frames[next_b]);
     new_block();
     game_loop();
+
+    return MENU_OK;
 }
 
 #endif
diff --git a/apps/screensavers_menu.c b/apps/screensavers_menu.c
index a7bd4d422c..b184b916cc 100644
--- a/apps/screensavers_menu.c
+++ b/apps/screensavers_menu.c
@@ -30,12 +30,13 @@
 #include "sprintf.h"
 
 #include "boxes.h"
-extern void bounce(void);
-extern void blank(void);
+extern Menu bounce(void);
+extern Menu blank(void);
 
-void screensavers_menu(void)
+Menu screensavers_menu(void)
 {
     int m;
+    Menu result;
 
     struct menu_items items[] = {
         { "Boxes", boxes },
@@ -44,8 +45,10 @@ void screensavers_menu(void)
     };
 
     m=menu_init( items, sizeof items / sizeof(struct menu_items) );
-    menu_run(m);
+    result = menu_run(m);
     menu_exit(m);
+
+    return result;
 }
 
 #endif
diff --git a/apps/screensavers_menu.h b/apps/screensavers_menu.h
index 42a40cf826..cac4c43cc9 100644
--- a/apps/screensavers_menu.h
+++ b/apps/screensavers_menu.h
@@ -19,7 +19,7 @@
 #ifndef _SCREENSAVERS_MENU_H
 #define _SCREENSAVERS_MENU_H
 
-void screensavers_menu(void);
+Menu screensavers_menu(void);
 
 #endif
 
diff --git a/apps/settings_menu.c b/apps/settings_menu.c
index 0d88edfff4..2bb4ef4481 100644
--- a/apps/settings_menu.c
+++ b/apps/settings_menu.c
@@ -36,39 +36,45 @@
 #include "powermgmt.h"
 #include "rtc.h"
 
-static void show_hidden_files(void)
+static Menu show_hidden_files(void)
 {
     set_bool( "[Show hidden files]", &global_settings.show_hidden_files );
+    return MENU_OK;
 }
 
-static void contrast(void)
+static Menu contrast(void)
 {
     set_int( "[Contrast]", "", &global_settings.contrast, 
              lcd_set_contrast, 1, 0, MAX_CONTRAST_SETTING );
+    return MENU_OK;
 }
 
-static void shuffle(void)
+static Menu shuffle(void)
 {
     set_bool( "[Shuffle]", &global_settings.playlist_shuffle );
+    return MENU_OK;
 }
 
-static void mp3_filter(void)
+static Menu mp3_filter(void)
 {
     set_bool( "[MP3/M3U filter]", &global_settings.mp3filter );
+    return MENU_OK;
 }
 
-static void sort_case(void)
+static Menu sort_case(void)
 {
     set_bool( "[Sort case sensitive]", &global_settings.sort_case );
+    return MENU_OK;
 }
 
-static void resume(void)
+static Menu resume(void)
 {
     char* names[] = { "off", "ask", "on " };
     set_option( "[Resume]", &global_settings.resume, names, 3 );
+    return MENU_OK;
 }
 
-static void backlight_timer(void)
+static Menu backlight_timer(void)
 {
     char* names[] = { "off", "on ",
                       "1s ", "2s ", "3s ", "4s ", "5s ",
@@ -77,15 +83,17 @@ static void backlight_timer(void)
                       "60s", "90s"};
     set_option("[Backlight]", &global_settings.backlight, names, 19 );
     backlight_time(global_settings.backlight);
+    return MENU_OK;
 }
 
-static void scroll_speed(void)
+static Menu scroll_speed(void)
 {
     set_int("Scroll speed indicator...", "", &global_settings.scroll_speed, 
             &lcd_scroll_speed, 1, 1, 20 );
+    return MENU_OK;
 }
 
-static void wps_set(void)
+static Menu wps_set(void)
 {
 #ifdef HAVE_LCD_BITMAP
     char* names[] = { "ID3 Tags", "File     ", "Parse    " };
@@ -102,18 +110,20 @@ static void wps_set(void)
 #endif
 
 #endif
+    return MENU_OK;
 }
 
 #ifdef HAVE_CHARGE_CTRL
-static void deep_discharge(void)
+static Menu deep_discharge(void)
 {
     set_bool( "[Deep discharge]", &global_settings.discharge );
     charge_restart_level = global_settings.discharge ? CHARGE_RESTART_LO : CHARGE_RESTART_HI;
+    return MENU_OK;
 }
 #endif
 
 #ifdef HAVE_RTC
-static void timedate_set(void)
+static Menu timedate_set(void)
 {
     int timedate[7]; /* hour,minute,second,year,month,day,dayofweek */
 
@@ -150,24 +160,28 @@ static void timedate_set(void)
         rtc_write(0x04, timedate[6] | (rtc_read(0x04) & 0xf8));  /* dayofweek          */
         rtc_write(0x00, 0x00);                                   /* 0.1 + 0.01 seconds */
     }
+    return MENU_OK;
 }
 #endif
 
-static void ff_rewind(void)
+static Menu ff_rewind(void)
 {
     set_int("[FF/Rewind Step Size]", "s", &global_settings.ff_rewind,
             NULL, 1, 1, 999 );
+    return MENU_OK;
 }
 
-void settings_menu(void)
+Menu settings_menu(void)
 {
     int m;
+    Menu result;
+
     struct menu_items items[] = {
         { "Shuffle",         shuffle         }, 
         { "MP3/M3U filter",  mp3_filter      },
         { "Sort mode",       sort_case       },
         { "Backlight Timer", backlight_timer },
-        { "Contrast",    contrast    },  
+        { "Contrast",        contrast    },  
         { "Scroll speed",    scroll_speed    },  
         { "While Playing",   wps_set         },
 #ifdef HAVE_CHARGE_CTRL
@@ -183,7 +197,7 @@ void settings_menu(void)
     bool old_shuffle = global_settings.playlist_shuffle;
     
     m=menu_init( items, sizeof items / sizeof(struct menu_items) );
-    menu_run(m);
+    result = menu_run(m);
     menu_exit(m);
 
     if (old_shuffle != global_settings.playlist_shuffle)
@@ -197,4 +211,5 @@ void settings_menu(void)
             sort_playlist();
         }
     }
+    return result;
 }
diff --git a/apps/settings_menu.h b/apps/settings_menu.h
index 00227c08fa..19cffaccae 100644
--- a/apps/settings_menu.h
+++ b/apps/settings_menu.h
@@ -19,6 +19,8 @@
 #ifndef _SETTINGS_MENU_H
 #define _SETTINGS_MENU_H
 
-void settings_menu(void);
+#include "menu.h"
+
+Menu settings_menu(void);
 
 #endif
diff --git a/apps/sound_menu.c b/apps/sound_menu.c
index 63873ff0f8..24da3f5555 100644
--- a/apps/sound_menu.c
+++ b/apps/sound_menu.c
@@ -145,48 +145,56 @@ void set_sound(char* string,
     lcd_stop_scroll();
 }
 
-static void volume(void)
+static Menu volume(void)
 {
     set_sound("Volume", &global_settings.volume, SOUND_VOLUME);
+    return MENU_OK;
 }
 
-static void balance(void)
+static Menu balance(void)
 {
     set_sound("Balance", &global_settings.balance, SOUND_BALANCE);
+    return MENU_OK;
 }
 
-static void bass(void)
+static Menu bass(void)
 {
     set_sound("Bass", &global_settings.bass, SOUND_BASS);
+    return MENU_OK;
 };
 
-static void treble(void)
+static Menu treble(void)
 {
     set_sound("Treble", &global_settings.treble, SOUND_TREBLE);
+    return MENU_OK;
 }
 
 #ifdef HAVE_MAS3587F
-static void loudness(void)
+static Menu loudness(void)
 {
     set_sound("Loudness", &global_settings.loudness, SOUND_LOUDNESS);
+    return MENU_OK;
 };
 
-static void bass_boost(void)
+static Menu bass_boost(void)
 {
     set_sound("Bass boost", &global_settings.bass_boost, SOUND_SUPERBASS);
+    return MENU_OK;
 };
 
-static void avc(void)
+static Menu avc(void)
 {
     char* names[] = { "off", "2s ", "4s ", "8s " };
     set_option("[AV decay time]", &global_settings.avc, names, 4 );
     mpeg_sound_set(SOUND_AVC, global_settings.avc);
+    return MENU_OK;
 }
 #endif /* ARCHOS_RECORDER */
 
-void sound_menu(void)
+Menu sound_menu(void)
 {
     int m;
+    Menu result;
     struct menu_items items[] = {
         { "Volume", volume },
         { "Bass",   bass },
@@ -200,6 +208,8 @@ void sound_menu(void)
     };
     
     m=menu_init( items, sizeof items / sizeof(struct menu_items) );
-    menu_run(m);
+    result = menu_run(m);
     menu_exit(m);
+
+    return result;
 }
diff --git a/apps/sound_menu.h b/apps/sound_menu.h
index db40c120aa..27e9c5efa3 100644
--- a/apps/sound_menu.h
+++ b/apps/sound_menu.h
@@ -19,6 +19,8 @@
 #ifndef _SOUND_MENU_H
 #define _SOUND_MENU_H
 
-void sound_menu(void);
+#include "menu.h"
+
+Menu sound_menu(void);
 
 #endif
diff --git a/apps/tree.c b/apps/tree.c
index 8718252ac5..0c4e26ab8e 100644
--- a/apps/tree.c
+++ b/apps/tree.c
@@ -640,13 +640,15 @@ bool dirbrowse(char *root)
                 bool lastfilter = global_settings.mp3filter;
                 bool lastsortcase = global_settings.sort_case;
                 bool show_hidden_files = global_settings.show_hidden_files;
+                Menu result;
 
                 lcd_stop_scroll();
-                main_menu();
+                result = main_menu();
                 /* do we need to rescan dir? */
-                if ( lastfilter != global_settings.mp3filter ||
-                     lastsortcase != global_settings.sort_case ||
-                     show_hidden_files != global_settings.show_hidden_files)
+                if (result == MENU_REFRESH_DIR ||
+                    lastfilter != global_settings.mp3filter ||
+                    lastsortcase != global_settings.sort_case ||
+                    show_hidden_files != global_settings.show_hidden_files)
                     lastdir[0] = 0;
                 restore = true;
                 break;