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/** @file
The file provides services to call for drivers to leverage the
EFI configuration driver interface.
Copyright (c) 2006 - 2007, 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
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef __EFI_FORM_BROWSER_H__
#define __EFI_FORM_BROWSER_H__
#define EFI_FORM_BROWSER_PROTOCOL_GUID \
{ 0xe5a1333e, 0xe1b4, 0x4e55, { 0xce, 0xeb, 0x35, 0xc3, 0xef, 0x13, 0x34, 0x43 } }
typedef struct _EFI_FORM_BROWSER_PROTOCOL EFI_FORM_BROWSER_PROTOCOL;
/**
@param LeftColumn Value that designates the text column
where the browser window will begin from
the left-hand side of the screen
RightColumn Value that designates the text
column where the browser window will end
on the right-hand side of the screen.
@param TopRow Value that designates the text row from the
top of the screen where the browser window
will start.
@param BottomRow Value that designates the text row from the
bottom of the screen where the browser
window will end.
**/
typedef struct {
UINTN LeftColumn;
UINTN RightColumn;
UINTN TopRow;
UINTN BottomRow;
} EFI_SCREEN_DESCRIPTOR;
/**
This function is the primary interface to the internal
forms-based browser. By calling this routine, one is directing
the browser to use a variety of passed-in information or
primarily use the HII database as the source of information.
@param This A pointer to the EFI_FORM_BROWSER_PROTOCOL
instance.
@param Handle A pointer to an array of HII handles to
display. This value should correspond to the
value of the HII form package that is required
to be displayed.
@param HandleCount The number of handles in the array
specified by Handle.
@param SingleUse If FALSE, the browser operates as a standard
forms processor and exits only when
explicitly requested by the user. If TRUE,
the browser will return immediately after
processing the first user-generated
selection.
@param ScreenDimensions Allows the browser to be called so
that it occupies a portion of the
physical screen instead of
dynamically determining the screen
dimensions. If the input values
violate the platform policy then the
dimensions will be dynamically
adjusted to comply.
@param ResetRequired This BOOLEAN value will tell the caller
if a reset is required based on the data
that might have been changed. The
ResetRequired parameter is primarily
applicable for configuration
applications, and is an optional
parameter.
@retval EFI_SUCCESS The function completed successfully
@retval EFI_NOT_FOUND The variable was not found.
@retval EFI_BUFFER_TOO_SMALL The DataSize is too small for
the result. DataSize has been
updated with the size needed to
complete the request.
@retval EFI_INVALID_PARAMETER One of the parameters has an
invalid value.
@retval EFI_DEVICE_ERROR The variable could not be saved due
to a hardware failure.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_SEND_FORM) (
IN CONST EFI_FORM_BROWSER_PROTOCOL *This,
IN CONST EFI_HII_HANDLE *Handle,
IN CONST UINTN HandleCount,
IN CONST BOOLEAN SingleUse,
IN CONST EFI_SCREEN_DESCRIPTOR *ScreenDimensions, OPTIONAL
OUT BOOLEAN *ResetRequired OPTIONAL
);
/**
This routine is called by a routine which was called by the
browser. This routine called this service in the browser to
retrieve or set certain uncommitted state information.
@param This A pointer to the EFI_FORM_BROWSER_PROTOCOL
instance.
@param ResultsDataSize A pointer to the size of the buffer
associated with ResultsData.
@param ResultsData A string returned from an IFR browser or
equivalent. The results string will have
no routing information in them.
@param RetrieveData A BOOLEAN field which allows an agent to
retrieve (if RetrieveData = TRUE) data
from the uncommitted browser state
information or set (if RetrieveData =
FALSE) data in the uncommitted browser
state information.
@param VariableGuid An optional field to indicate the target
variable GUID name to use.
@param VariableName An optional field to indicate the target
human-readable variable name.
@retval EFI_SUCCESS The results have been distributed or are
awaiting distribution.
@retval EFI_OUT_OF_RESOURCES The ResultsDataSize specified
was too small to contain the
results data.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_BROWSER_CALLBACK ) (
IN CONST EFI_FORM_BROWSER_PROTOCOL *This,
IN OUT UINTN *ResultsDataSize,
IN OUT EFI_STRING ResultsData,
IN CONST BOOLEAN RetrieveData,
IN CONST EFI_GUID *VariableGuid, OPTIONAL
IN CONST CHAR16 *VariableName OPTIONAL
);
/**
This protocol is the interface to call for drivers to leverage
the EFI configuration driver interface.
@param SendForm Provides direction to the configuration
driver whether to use the HII database or to
use a passed-in set of data. This functions
also establishes a pointer to the calling
driver's callback interface. See the
SendForm() function description.
@param BrowserCallback Routine used to expose internal
configuration state of the browser.
This is primarily used by callback
handler routines which were called by
the browser and in-turn need to get
additional information from the
browser itself. See the
BrowserCallback() function
description.
**/
struct _EFI_FORM_BROWSER_PROTOCOL {
EFI_SEND_FORM SendForm;
EFI_BROWSER_CALLBACK BrowserCallback;
} ;
extern EFI_GUID gEfiFormBrowserProtocolGuid;
#endif
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