(Menu) Create menu_entries_get_description

frontend/menu/backend/menu_common_backend.c

@@ -78,11 +78,14 @@ static int menu_info_screen_iterate(unsigned action)
          setting_data_get_description(current_setting, msg, sizeof(msg));
       else
       {
+         const char *label = NULL;
          unsigned info_type;
          file_list_get_at_offset(driver.menu->selection_buf,
-               driver.menu->selection_ptr, NULL, NULL,
+               driver.menu->selection_ptr, NULL, &label,
                &info_type);
 
+         if (menu_entries_get_description(label, msg, sizeof(msg)) == -1)
+         {
             switch (info_type)
             {
                case MENU_SETTINGS_SHADER_PRESET:
@@ -114,26 +117,6 @@ static int menu_info_screen_iterate(unsigned action)
                         "in the menu might not be correct."
                         );
                   break;
-#if 0
-            case MENU_SETTINGS_SHADER_APPLY:
-               snprintf(msg, sizeof(msg),
-                     " -- Apply Shader Changes. \n"
-                     " \n"
-                     "After changing shader settings, use this to \n"
-                     "apply changes. \n"
-                     " \n"
-                     "Changing shader settings is a somewhat \n"
-                     "expensive operation so it has to be \n"
-                     "done explicitly. \n"
-                     " \n"
-                     "When you apply shaders, the menu shader \n"
-                     "settings are saved to a temporary file (either \n"
-                     "menu.cgp or menu.glslp) and loaded. The file \n"
-                     "persists after RetroArch exits. The file is \n"
-                     "saved to Shader Directory."
-                     );
-               break;
-#endif
                case MENU_SETTINGS_SHADER_PASSES:
                   snprintf(msg, sizeof(msg),
                         " -- Shader Passes. \n"
@@ -431,6 +414,7 @@ static int menu_info_screen_iterate(unsigned action)
             }
          }
       }
+   }
 
    if (driver.video_data && driver.menu_ctx &&
          driver.menu_ctx->render_messagebox)

frontend/menu/menu_entries.c

@@ -840,3 +840,31 @@ void menu_entries_push(file_list_t *list,
    menu_clear_navigation(driver.menu);
    driver.menu->need_refresh = true;
 }
+
+int menu_entries_get_description(const char *label, 
+      char *msg, size_t sizeof_msg)
+{
+   if (!strcmp(label, "shader_apply_changes"))
+   {
+      snprintf(msg, sizeof_msg,
+            " -- Apply Shader Changes. \n"
+            " \n"
+            "After changing shader settings, use this to \n"
+            "apply changes. \n"
+            " \n"
+            "Changing shader settings is a somewhat \n"
+            "expensive operation so it has to be \n"
+            "done explicitly. \n"
+            " \n"
+            "When you apply shaders, the menu shader \n"
+            "settings are saved to a temporary file (either \n"
+            "menu.cgp or menu.glslp) and loaded. The file \n"
+            "persists after RetroArch exits. The file is \n"
+            "saved to Shader Directory."
+            );
+
+      return 0;
+   }
+
+   return -1;
+}

frontend/menu/menu_entries.h

@@ -37,4 +37,7 @@ void menu_entries_pop(file_list_t *list);
 
 void menu_flush_stack_type(file_list_t *list, unsigned final_type);
 
+int menu_entries_get_description(const char *label, char *msg,
+      size_t sizeof_msg);
+
 #endif