[patch] IntelFrameworkModulePkg/BootMaint: Show "Change Boot order" page correctly

[Dandan Bi <dandan.bi@intel.com>]

Some boot options may be deleted in the "Delete Boot Option page",
But the data BootOptionOrder in BmmFakeNvData may not be updated.
So when user enter the "Change Boot Order" page, we should not always
get the BootOptionOrder in BmmFakeNvData, it will result in incorrect
UI behaviors. When the Boot Options have been saved,
we should get the BootOptionOrder through function GetBootOrder.

For driver option codes need to do the same change.

This patch is to fix the issue in bugzilla:
https://bugzilla.tianocore.org/show_bug.cgi?id=39

Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
---
 .../Universal/BdsDxe/BootMaint/UpdatePage.c        | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/UpdatePage.c b/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/UpdatePage.c
index b13ed11..b7fee3a 100644
--- a/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/UpdatePage.c
+++ b/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/UpdatePage.c
@@ -1,9 +1,9 @@
 /** @file
 Dynamically update the pages.
 
-Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -557,18 +557,34 @@ UpdateOrderPage (
   QuestionId = 0;
   VarOffset = 0;
   switch (UpdatePageId) { 
 
   case FORM_BOOT_CHG_ID:
-    //GetBootOrder (CallbackData);
+    //
+    // If the BootOptionOrder in the BmmFakeNvData are same with the date in the BmmOldFakeNVData,
+    // means all Boot Options has been save in BootOptionMenu, we can get the date from the menu.
+    // else means browser maintains some uncommitted date which are not saved in BootOptionMenu,
+    // so we should not get the data from BootOptionMenu to show it.
+    //
+    if (CompareMem (CallbackData->BmmFakeNvData.BootOptionOrder, CallbackData->BmmOldFakeNVData.BootOptionOrder, sizeof (CallbackData->BmmFakeNvData.BootOptionOrder)) == 0) {
+      GetBootOrder (CallbackData);
+    }
     OptionOrder = CallbackData->BmmFakeNvData.BootOptionOrder;
     QuestionId = BOOT_OPTION_ORDER_QUESTION_ID;
     VarOffset = BOOT_OPTION_ORDER_VAR_OFFSET;
     break;
 
   case FORM_DRV_CHG_ID:
-    //GetDriverOrder (CallbackData);
+    //
+    // If the DriverOptionOrder in the BmmFakeNvData are same with the date in the BmmOldFakeNVData,
+    // means all Driver Options has been save in DriverOptionMenu, we can get the DriverOptionOrder from the menu.
+    // else means browser maintains some uncommitted date which are not saved in DriverOptionMenu,
+    // so we should not get the data from DriverOptionMenu to show it.
+    //
+    if (CompareMem (CallbackData->BmmFakeNvData.DriverOptionOrder, CallbackData->BmmOldFakeNVData.DriverOptionOrder, sizeof (CallbackData->BmmFakeNvData.DriverOptionOrder)) == 0) {
+      GetDriverOrder (CallbackData);
+    }
     OptionOrder = CallbackData->BmmFakeNvData.DriverOptionOrder;
     QuestionId = DRIVER_OPTION_ORDER_QUESTION_ID;
     VarOffset = DRIVER_OPTION_ORDER_VAR_OFFSET;
     break;
   }  
-- 
1.9.5.msysgit.1