Enable warningif opcode in browser.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14625 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/DisplayEngineDxe/ProcessOptions.c

@@ -15,6 +15,14 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include "FormDisplay.h"
 
+typedef struct {
+  EFI_EVENT   SyncEvent;
+  UINT8       *TimeOut;
+  CHAR16      *ErrorInfo;
+} WARNING_IF_CONTEXT;
+
+#define MAX_TIME_OUT_LEN  0x10
+
 /**
   Concatenate a narrow string to another string.
 
@@ -560,6 +568,136 @@ CreateMultiStringPopUp (
   VA_END (Marker);
 }
 
+/**
+  Process nothing.
+
+  @param Event    The Event need to be process
+  @param Context  The context of the event.
+
+**/
+VOID
+EFIAPI
+EmptyEventProcess (
+  IN  EFI_EVENT    Event,
+  IN  VOID         *Context
+  )
+{
+}
+
+/**
+  Process for the refresh interval statement.
+
+  @param Event    The Event need to be process
+  @param Context  The context of the event.
+
+**/
+VOID
+EFIAPI
+RefreshTimeOutProcess (
+  IN  EFI_EVENT    Event,
+  IN  VOID         *Context
+  )
+{
+  WARNING_IF_CONTEXT     *EventInfo;
+  CHAR16                 TimeOutString[MAX_TIME_OUT_LEN];
+
+  EventInfo   = (WARNING_IF_CONTEXT *) Context;
+
+  if (*(EventInfo->TimeOut) == 0) {
+    gBS->CloseEvent (Event);
+
+    gBS->SignalEvent (EventInfo->SyncEvent);
+    return;
+  }
+
+  UnicodeSPrint(TimeOutString, MAX_TIME_OUT_LEN, L"%d", *(EventInfo->TimeOut));
+
+  CreateDialog (NULL, gEmptyString, EventInfo->ErrorInfo, gPressEnter, gEmptyString, TimeOutString, NULL);
+
+  *(EventInfo->TimeOut) -= 1;
+}
+
+/**
+  Show the warning message.
+
+  @param   RetInfo    The input warning string and timeout info.
+
+**/
+VOID
+WarningIfCheck (
+  IN STATEMENT_ERROR_INFO  *RetInfo
+  )
+{
+  CHAR16             *ErrorInfo;
+  EFI_EVENT          WaitList[2];
+  EFI_EVENT          RefreshIntervalEvent;
+  EFI_EVENT          TimeOutEvent;
+  UINT8              TimeOut;
+  EFI_STATUS         Status;
+  UINTN              Index;
+  WARNING_IF_CONTEXT EventContext;
+  EFI_INPUT_KEY      Key;
+
+  TimeOutEvent         = NULL;
+  RefreshIntervalEvent = NULL;
+
+  ASSERT (RetInfo->StringId != 0);
+  ErrorInfo = GetToken (RetInfo->StringId, gFormData->HiiHandle);
+  TimeOut   = RetInfo->TimeOut;
+  if (RetInfo->TimeOut == 0) {
+    do {
+      CreateDialog (&Key, gEmptyString, ErrorInfo, gPressEnter, gEmptyString, NULL);
+    } while (Key.UnicodeChar != CHAR_CARRIAGE_RETURN);
+  } else {
+    Status = gBS->CreateEvent (EVT_NOTIFY_WAIT, TPL_CALLBACK, EmptyEventProcess, NULL, &TimeOutEvent);
+    ASSERT_EFI_ERROR (Status);
+
+    EventContext.SyncEvent = TimeOutEvent;
+    EventContext.TimeOut   = &TimeOut;
+    EventContext.ErrorInfo = ErrorInfo;
+
+    Status = gBS->CreateEvent (EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, RefreshTimeOutProcess, &EventContext, &RefreshIntervalEvent);
+    ASSERT_EFI_ERROR (Status);
+
+    //
+    // Show the dialog first to avoid long time not reaction.
+    //
+    gBS->SignalEvent (RefreshIntervalEvent);
+
+    Status = gBS->SetTimer (RefreshIntervalEvent, TimerPeriodic, ONE_SECOND);
+    ASSERT_EFI_ERROR (Status);
+
+    while (TRUE) {
+      Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
+      if (!EFI_ERROR (Status) && Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
+        break;
+      }
+
+      if (Status != EFI_NOT_READY) {
+        continue;
+      }
+
+      WaitList[0] = TimeOutEvent;
+      WaitList[1] = gST->ConIn->WaitForKey;
+
+      Status = gBS->WaitForEvent (2, WaitList, &Index);
+      ASSERT_EFI_ERROR (Status);
+
+      if (Index == 0) {
+        //
+        // Timeout occur, close the hoot time out event.
+        //
+        break;
+      }
+    }
+  }
+
+  gBS->CloseEvent (TimeOutEvent);
+  gBS->CloseEvent (RefreshIntervalEvent);
+
+  FreePool (ErrorInfo);
+}
+
 /**
   Process validate for one question.
 
@@ -600,7 +738,14 @@ ValidateQuestion (
     FreePool (ErrorInfo);
 
     Status = EFI_INVALID_PARAMETER;
-  break;
+    break;
+
+  case WARNING_IF_TRUE:
+    //
+    // Condition meet, show up warning message
+    //
+    WarningIfCheck (&RetInfo);
+    break;
 
   default:
     break;