From ae09721a65ab3294439f6fa233adaf3b897f702f Mon Sep 17 00:00:00 2001
From: Gaurav Pandya <gaurav.pandya@amd.com>
Date: Wed, 20 Sep 2023 20:37:49 +0800
Subject: MdeModulePkg/DisplayEngineDxe: Support "^" and "V" key on pop-up form

BZ #4790
Support "^" and "V" key stokes on the pop-up form. Align the
implementation with key support on the regular HII form.

Signed-off-by: Gaurav Pandya <gaurav.pandya@amd.com>
---
 .../Universal/DisplayEngineDxe/InputHandler.c      | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/MdeModulePkg/Universal/DisplayEngineDxe/InputHandler.c b/MdeModulePkg/Universal/DisplayEngineDxe/InputHandler.c
index f70feeb55f..b6dc23476a 100644
--- a/MdeModulePkg/Universal/DisplayEngineDxe/InputHandler.c
+++ b/MdeModulePkg/Universal/DisplayEngineDxe/InputHandler.c
@@ -2,6 +2,7 @@
 Implementation for handling user input from the User Interfaces.
 
 Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -1568,6 +1569,47 @@ TheKey:
 
         break;
 
+      case '^':
+        if ((TopOptionIndex > 0) && (TopOptionIndex == HighlightOptionIndex)) {
+          //
+          // Highlight reaches the top of the popup window, scroll one menu item.
+          //
+          TopOptionIndex--;
+          ShowDownArrow = TRUE;
+        }
+
+        if (TopOptionIndex == 0) {
+          ShowUpArrow = FALSE;
+        }
+
+        if (HighlightOptionIndex > 0) {
+          HighlightOptionIndex--;
+        }
+
+        break;
+
+      case 'V':
+      case 'v':
+        if (((TopOptionIndex + MenuLinesInView) < PopUpMenuLines) &&
+            (HighlightOptionIndex == (TopOptionIndex + MenuLinesInView - 1)))
+        {
+          //
+          // Highlight reaches the bottom of the popup window, scroll one menu item.
+          //
+          TopOptionIndex++;
+          ShowUpArrow = TRUE;
+        }
+
+        if ((TopOptionIndex + MenuLinesInView) == PopUpMenuLines) {
+          ShowDownArrow = FALSE;
+        }
+
+        if (HighlightOptionIndex < (PopUpMenuLines - 1)) {
+          HighlightOptionIndex++;
+        }
+
+        break;
+
       case CHAR_NULL:
         switch (Key.ScanCode) {
           case SCAN_UP:
-- 
cgit