Add example usage of EFI_BROWSER_ACTION_FORM_OPEN and EFI_BROWSER_ACTION_FORM_CLOSE to DriverSample.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9365 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c

@@ -2,7 +2,7 @@
 This is an example of how a driver might export data to the HII protocol to be
 later utilized by the Setup Protocol
 
-Copyright (c) 2004 - 2008, Intel Corporation
+Copyright (c) 2004 - 2009, Intel Corporation
 All rights reserved. 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
@@ -554,6 +554,67 @@ DriverCallback (
   EFI_IFR_GUID_LABEL              *StartLabel;
   VOID                            *EndOpCodeHandle;
   EFI_IFR_GUID_LABEL              *EndLabel;
+  EFI_INPUT_KEY                   Key;
+  DRIVER_SAMPLE_CONFIGURATION     *Configuration;
+
+  if (Action == EFI_BROWSER_ACTION_FORM_OPEN) {
+    //
+    // On FORM_OPEN event, update the form on-the-fly
+    //
+    PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
+
+    //
+    // Initialize the container for dynamic opcodes
+    //
+    StartOpCodeHandle = HiiAllocateOpCodeHandle ();
+    ASSERT (StartOpCodeHandle != NULL);
+
+    //
+    // Create Hii Extend Label OpCode as the start opcode
+    //
+    StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
+    StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
+    StartLabel->Number       = LABEL_UPDATE2;
+
+    HiiCreateActionOpCode (
+      StartOpCodeHandle,                // Container for dynamic created opcodes
+      0x1238,                           // Question ID
+      STRING_TOKEN(STR_SAVE_TEXT),      // Prompt text
+      STRING_TOKEN(STR_SAVE_TEXT),      // Help text
+      EFI_IFR_FLAG_CALLBACK,            // Question flag
+      0                                 // Action String ID
+    );
+
+    HiiUpdateForm (
+      PrivateData->HiiHandle[0],  // HII handle
+      &mFormSetGuid,              // Formset GUID
+      0x3,                        // Form ID
+      StartOpCodeHandle,          // Label for where to insert opcodes
+      NULL                        // Insert data
+      );
+
+    HiiFreeOpCodeHandle (StartOpCodeHandle);
+    return EFI_SUCCESS;
+  }
+
+  if (Action == EFI_BROWSER_ACTION_FORM_CLOSE) {
+    //
+    // On FORM_CLOSE event, show up a pop-up
+    //
+    do {
+      CreatePopUp (
+        EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
+        &Key,
+        L"",
+        L"You are going to leave the Form!",
+        L"Press ESC or ENTER to continue ...",
+        L"",
+        NULL
+        );
+    } while ((Key.ScanCode != SCAN_ESC) && (Key.UnicodeChar != CHAR_CARRIAGE_RETURN));
+
+    return EFI_SUCCESS;
+  }
 
   if ((Value == NULL) || (ActionRequest == NULL)) {
     return EFI_INVALID_PARAMETER;
@@ -635,6 +696,28 @@ DriverCallback (
                     &PrivateData->Configuration
                     );
 
+    //
+    // Set initial vlaue of dynamic created oneof Question in Form Browser
+    //
+    Configuration = AllocateZeroPool (sizeof (DRIVER_SAMPLE_CONFIGURATION));
+    ASSERT (Configuration != NULL);
+    Status = HiiGetBrowserData (&mFormSetGuid, VariableName, sizeof (DRIVER_SAMPLE_CONFIGURATION), (UINT8 *) Configuration);
+    if (!EFI_ERROR (Status)) {
+      Configuration->DynamicOneof = 2;
+
+      //
+      // Update uncommitted data of Browser
+      //
+      HiiSetBrowserData (
+        &mFormSetGuid,
+        VariableName,
+        sizeof (DRIVER_SAMPLE_CONFIGURATION),
+        (UINT8 *) Configuration,
+        NULL
+        );
+    }
+    FreePool (Configuration);
+
     HiiCreateOneOfOpCode (
       StartOpCodeHandle,                         // Container for dynamic created opcodes
       0x8001,                                    // Question ID (or call it "key")
@@ -682,6 +765,7 @@ DriverCallback (
 
     HiiFreeOpCodeHandle (StartOpCodeHandle);
     HiiFreeOpCodeHandle (OptionsOpCodeHandle);
+    HiiFreeOpCodeHandle (EndOpCodeHandle);
     break;
 
   case 0x5678:

MdeModulePkg/Universal/DriverSampleDxe/DriverSample.h

@@ -1,6 +1,6 @@
 /** @file
 
-Copyright (c) 2007, Intel Corporation
+Copyright (c) 2007 - 2009, Intel Corporation
 All rights reserved. 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
@@ -43,6 +43,7 @@ Revision History
 #include <Library/HiiLib.h>
 #include <Library/DevicePathLib.h>
 #include <Library/PrintLib.h>
+#include <Library/UefiLib.h>
 
 #include "NVDataStruc.h"
 

MdeModulePkg/Universal/DriverSampleDxe/DriverSampleDxe.inf

@@ -2,7 +2,7 @@
 # This is a sample driver which show how HII protocol, VFR and UNI files are used to
 # create a driver which can be dipslayed and configured by a UEFI HII Form Browser.
 #
-# Copyright (c) 2007 - 2008, Intel Corporation. All rights reserved.
+# Copyright (c) 2007 - 2009, Intel Corporation. All rights reserved.
 #
 #  All rights reserved. This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
@@ -55,6 +55,7 @@
   DebugLib
   HiiLib
   PrintLib
+  UefiLib
 
 [Guids]
   gEfiIfrTianoGuid                              ## CONSUMES ## Guid