HiiSetToDefaults behavior

* HiiSetToDefaults behavior
@ 2017-08-25  8:13 Wim Vervoorn
  2017-08-25  8:57 ` Bi, Dandan
  0 siblings, 1 reply; 4+ messages in thread
From: Wim Vervoorn @ 2017-08-25  8:13 UTC (permalink / raw)
  To: edk2-devel@lists.01.org

Hello,

I have a question about the expect behavior of HiiSetToDefaults(). So far I haven't been able to find a clear definition of what this should do.

What I expect is that this call would only touch the items that have a default defined. So what I would think is that Test2OfValue below would become 1 and Test1OfValue would be untouched as long as it's value is either 0 or 1 and become 1 if this is not the case.

What seems to happen is that for Test1OfValue the first item is used as the default.

oneof name = Test1OneOf,                               // Define reference name for Question
      varid   = lIfrNVData.Test1OfValue,                                      // Use "DataStructure.Member" to reference Buffer Storage
      prompt  = STRING_TOKEN(STR_TEST1_PROMPT),
      help    = STRING_TOKEN(STR_TEST1_HELP),
      //
      // Define an option (EFI_IFR_ONE_OF_OPTION)
      //
      option text = STRING_TOKEN(STR_ENABLE), value = 1, flags = 0;
      option text = STRING_TOKEN(STR_DISABLE), value = 0, flags = 0;
endoneof;

oneof name = Test2OneOf,                               // Define reference name for Question
      varid   = lIfrNVData.Test2OfValue,                                      // Use "DataStructure.Member" to reference Buffer Storage
      prompt  = STRING_TOKEN(STR_TEST2_PROMPT),
      help    = STRING_TOKEN(STR_TEST2_HELP),
      //
      // Define an option (EFI_IFR_ONE_OF_OPTION)
      //
      option text = STRING_TOKEN(STR_ENABLE), value = 1, flags = DEFAULT;
      option text = STRING_TOKEN(STR_DISABLE), value = 0, flags = 0;
endoneof;

Best Regards,
Wim Vervoorn

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