From f67c4382ed24928b181160ed32119ac1039ddeb7 Mon Sep 17 00:00:00 2001
From: ydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 16 Nov 2011 05:23:38 +0000
Subject: [PATCH] Enable lock attribute for statement and form; show this
 attribute same as grayout. Signed-off-by: ydong10 Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12721 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../Universal/DriverSampleDxe/Vfr.vfr         |  1 +
 .../Universal/SetupBrowserDxe/IfrParse.c      | 22 +++++++++++++++++++
 .../Universal/SetupBrowserDxe/Presentation.c  |  2 +-
 .../Universal/SetupBrowserDxe/Setup.h         |  3 ++-
 MdeModulePkg/Universal/SetupBrowserDxe/Ui.c   |  9 ++++++++
 MdeModulePkg/Universal/SetupBrowserDxe/Ui.h   |  2 ++
 6 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Universal/DriverSampleDxe/Vfr.vfr b/MdeModulePkg/Universal/DriverSampleDxe/Vfr.vfr
index e3710acd1b..f5e3193c29 100644
--- a/MdeModulePkg/Universal/DriverSampleDxe/Vfr.vfr
+++ b/MdeModulePkg/Universal/DriverSampleDxe/Vfr.vfr
@@ -358,6 +358,7 @@ formset
             minimum = 0,
             maximum = 0xff,
             step    = 0,
+            locked,
     endnumeric;
 
     numeric varid   = MyNameValueVar[1],     // This numeric take NameValueVar1 as storage
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c b/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
index 50ae87d92e..87924792a7 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
@@ -2117,6 +2117,28 @@ ParseOpCodes (
       CurrentForm->ModalForm = TRUE;
       break;
 
+    //
+    // Lock tag, used by form and statement.
+    //
+    case EFI_IFR_LOCKED_OP:
+      //
+      // Get ScopeOpcode from top of stack
+      //
+      PopScope (&ScopeOpCode);
+      PushScope (ScopeOpCode);
+      switch (ScopeOpCode) {
+      case EFI_IFR_FORM_OP:
+      case EFI_IFR_FORM_MAP_OP:
+        ASSERT (CurrentForm != NULL);
+        CurrentForm->Locked = TRUE;
+        break;
+
+      default:
+        ASSERT (CurrentStatement != NULL);
+        CurrentStatement->Locked = TRUE;
+      }      
+      break;
+
     //
     // Vendor specific
     //
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c b/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c
index 80e3a71edd..a6be2bbcee 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c
@@ -554,7 +554,7 @@ DisplayForm (
       // We are NOT!! removing this StringPtr buffer via FreePool since it is being used in the menuoptions, we will do
       // it in UiFreeMenu.
       //
-      MenuOption = UiAddMenuOption (StringPtr, Selection->Handle, Statement, NumberOfLines, MenuItemCount);
+      MenuOption = UiAddMenuOption (StringPtr, Selection->Handle, Selection->Form, Statement, NumberOfLines, MenuItemCount);
       MenuItemCount++;
 
       if (MenuOption->IsQuestion && !MenuOption->ReadOnly) {
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h b/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h
index 8f71e7cc38..eaf409b8e6 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Setup.h
@@ -374,7 +374,7 @@ typedef struct {
 
   EFI_DEFAULT_ID        DefaultId;        // for EFI_IFR_RESET_BUTTON
   EFI_GUID              RefreshGuid;      // for EFI_IFR_REFRESH_ID
-
+  BOOLEAN               Locked;           // Whether this statement is locked.
   //
   // Get from IFR parsing
   //
@@ -425,6 +425,7 @@ typedef struct {
   EFI_IMAGE_ID      ImageId;
 
   BOOLEAN           ModalForm;            // Whether this is a modal form.
+  BOOLEAN           Locked;               // Whether this form is locked.
 
   BOOLEAN           NvUpdateRequired;     // Whether this form has NV update request.
 
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
index baf36a213b..93399c4028 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
@@ -577,6 +577,7 @@ UiWaitForSingleEvent (
 
   @param  String                 String description for this option.
   @param  Handle                 Hii handle for the package list.
+  @param  Form                   The form this statement belong to.
   @param  Statement              Statement of this Menu Option.
   @param  NumberOfLines          Display lines for this Menu Option.
   @param  MenuItemCount          The index for this Option in the Menu.
@@ -588,6 +589,7 @@ UI_MENU_OPTION *
 UiAddMenuOption (
   IN CHAR16                  *String,
   IN EFI_HII_HANDLE          Handle,
+  IN FORM_BROWSER_FORM       *Form,
   IN FORM_BROWSER_STATEMENT  *Statement,
   IN UINT16                  NumberOfLines,
   IN UINT16                  MenuItemCount
@@ -643,6 +645,13 @@ UiAddMenuOption (
       MenuOption->GrayOut = Statement->GrayOutExpression->Result.Value.b;
     }
 
+    //
+    // If the form or the question has the lock attribute, deal same as grayout.
+    //
+    if (Form->Locked || Statement->Locked) {
+      MenuOption->GrayOut = TRUE;
+    }
+    
     switch (Statement->Operand) {
     case EFI_IFR_ORDERED_LIST_OP:
     case EFI_IFR_ONE_OF_OP:
diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
index f8797725e9..92783182f9 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
@@ -295,6 +295,7 @@ UiFreeRefreshList (
 
   @param  String                 String description for this option.
   @param  Handle                 Hii handle for the package list.
+  @param  Form                   The form this statement belong to.
   @param  Statement              Statement of this Menu Option.
   @param  NumberOfLines          Display lines for this Menu Option.
   @param  MenuItemCount          The index for this Option in the Menu.
@@ -306,6 +307,7 @@ UI_MENU_OPTION *
 UiAddMenuOption (
   IN CHAR16                  *String,
   IN EFI_HII_HANDLE          Handle,
+  IN FORM_BROWSER_FORM       *Form,
   IN FORM_BROWSER_STATEMENT  *Statement,
   IN UINT16                  NumberOfLines,
   IN UINT16                  MenuItemCount