main_menu_config: New plugin to configur the main menu order

Plugins/Applications/main_menu_config allows you to edit the
main menu order without having to manually edit config.cfg.

Press the standard OK button to access the internal menu
which allows you to move items up/down in the order and toggle
their visibility. Exit via this menu to have the order saved.

(Suggestions welcome to improve this UI)

Change-Id: I59715ef1ca265aeb6f9666ef27026bc1093f2579

3 files changed, 206 insertions, 0 deletions

diff --git a/apps/plugins/CATEGORIES b/apps/plugins/CATEGORIES
index 54a316e..8a849aa 100644
--- a/apps/plugins/CATEGORIES
+++ b/apps/plugins/CATEGORIES
@@ -48,6 +48,7 @@ logo,demos
 lrcplayer,apps
 lua,viewers
 fractals,demos
+main_menu_config,apps
 matrix,demos
 maze,games
 mazezam,games
diff --git a/apps/plugins/SOURCES b/apps/plugins/SOURCES
index c512a9e..59bd402 100644
--- a/apps/plugins/SOURCES
+++ b/apps/plugins/SOURCES
@@ -11,6 +11,7 @@ keybox.c
 logo.c
 lrcplayer.c
 mosaique.c
+main_menu_config.c
 properties.c
 random_folder_advance_config.c
 rockblox.c
diff --git a/apps/plugins/main_menu_config.c b/apps/plugins/main_menu_config.c
new file mode 100644
index 0000000..da9fde8
--- /dev/null
+++ b/apps/plugins/main_menu_config.c
@@ -0,0 +1,204 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 Jonathan Gordon
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* mandatory include for all plugins */
+#include "plugin.h"
+
+static struct menu_table *menu_table;
+static int menu_item_count;
+
+#define MAX_ITEM_NAME 64
+#define MAX_ITEMS 16
+struct items
+{
+    char string[MAX_ITEM_NAME];
+    bool enabled;
+};
+
+static struct items menu_items[MAX_ITEMS];
+
+
+static const char * menu_get_name(int selected_item, void * data,
+                                   char * buffer, size_t buffer_len)
+{
+    (void)data;
+    (void)buffer;
+    (void)buffer_len;
+
+    return menu_items[selected_item].string;
+}
+
+static enum themable_icons menu_get_icon(int selected_item, void * data)
+{
+    (void)data;
+
+    return menu_items[selected_item].enabled ? Icon_Config : Icon_NOICON;
+}
+
+void load_from_cfg(void)
+{
+    char config_str[128];
+    char *token, *save;
+    int done = 0;
+    int i = 0;
+    bool found = false;
+
+    rb->root_menu_write_to_cfg(NULL, config_str, sizeof(config_str));
+
+    token = strtok_r(config_str, ", ", &save);
+
+    while (token)
+    {
+        i = 0;
+        found = false;
+        for (i = 0, found = false; i < menu_item_count && !found; i++)
+        {
+            found = rb->strcmp(token, menu_table[i].string) == 0;
+        }
+        if (found)
+        {
+            rb->strcpy(menu_items[done].string, token);
+            menu_items[done].enabled = true;
+            done++;
+        }
+        token = strtok_r(NULL, ", ", &save);
+    }
+
+    if (done < menu_item_count)
+    {
+        for (i = 0; i < menu_item_count; i++)
+        {
+            found = false;
+            for (int j = 0; !found && j < done; j++)
+            {
+                found = rb->strcmp(menu_table[i].string, menu_items[j].string) == 0;
+            }
+
+            if (!found)
+            {
+                rb->strcpy(menu_items[done].string, menu_table[i].string);
+                menu_items[done].enabled = false;
+                done++;
+            }
+        }
+    }
+}
+
+static void save_to_cfg(void)
+{
+    char out[128];
+    int i, j = 0;
+
+    out[0] = '\0';
+    for (i = 0; i < menu_item_count; i++)
+    {
+        if (menu_items[i].enabled)
+        {
+            j += rb->snprintf(&out[j],sizeof(out) - j, "%s, ", menu_items[i].string);
+        }
+    }
+
+    rb->root_menu_load_from_cfg(&rb->global_settings->root_menu_customized, out);
+}
+
+static void swap_items(int a, int b)
+{
+    char temp[MAX_ITEM_NAME];
+    bool enabled;
+    
+    rb->strcpy(temp, menu_items[a].string);
+    enabled = menu_items[a].enabled;
+    rb->strcpy(menu_items[a].string,
+            menu_items[b].string);
+    menu_items[a].enabled = menu_items[b].enabled;
+    rb->strcpy(menu_items[b].string, temp);
+    menu_items[b].enabled = enabled;
+}
+
+/* this is the plugin entry point */
+enum plugin_status plugin_start(const void* parameter)
+{
+    (void)parameter;
+    struct gui_synclist list;
+    bool done = false;
+    int action, cur_sel;
+    
+    menu_table = rb->root_menu_get_options(&menu_item_count);
+    load_from_cfg();
+
+    rb->gui_synclist_init(&list, menu_get_name, NULL, false, 1, NULL);
+    rb->gui_synclist_set_icon_callback(&list, menu_get_icon);
+    rb->gui_synclist_set_nb_items(&list, menu_item_count);
+    rb->gui_synclist_set_title(&list, "Rockbox Main Menu Order", Icon_Rockbox);
+
+    while (!done)
+    {
+        rb->gui_synclist_draw(&list);
+        cur_sel = rb->gui_synclist_get_sel_pos(&list);
+        action = rb->get_action(CONTEXT_LIST,TIMEOUT_BLOCK);
+        if (rb->gui_synclist_do_button(&list,&action,LIST_WRAP_UNLESS_HELD))
+            continue;
+
+        switch (action)
+        {
+            case ACTION_STD_OK:
+            {
+                MENUITEM_STRINGLIST(menu, "Main Menu Editor", NULL,
+                                        "Toggle Item",
+                                        "Move Item Up", "Move Item down",
+                                        "----------",
+                                        "Load Default Configuration", "Exit");
+                switch (rb->do_menu(&menu, NULL, NULL, false))
+                {
+                    case 0:
+                        menu_items[cur_sel].enabled = !menu_items[cur_sel].enabled;
+                        break;
+                    case 1:
+                        if (cur_sel == 0)
+                            break;
+                            swap_items(cur_sel, cur_sel - 1);
+                        break;
+                    case 2:
+                        if (cur_sel + 1 == menu_item_count)
+                            break;
+                            swap_items(cur_sel, cur_sel + 1);
+                        break;
+                    case 4:
+                        rb->root_menu_set_default(&rb->global_settings->root_menu_customized, NULL);
+                        load_from_cfg();
+                        break;
+                    case 5:
+                        done = true;
+                        save_to_cfg();
+                        rb->global_settings->root_menu_customized = true;
+                        rb->settings_save();
+                        break;
+                }
+                break;
+            }
+            case ACTION_STD_CANCEL:
+                done = true;
+                break;
+        }
+    }
+
+
+    return PLUGIN_OK;
+}