/**
This function processes the results of changes in configuration.
When user select a interactive opcode, this callback will be triggered.
Based on the Question(QuestionId) that triggers the callback, the corresponding
actions is performed. It handles:
1) Process the axtra action or exit file explorer when user select one file .
2) update of file content if a dir is selected.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Action Specifies the type of action taken by the browser.
@param QuestionId A unique value which is sent to the original exporting driver
so that it can identify the type of data to expect.
@param Type The type of value for the question.
@param Value A pointer to the data being sent to the original exporting driver.
@param ActionRequest On return, points to the action requested by the callback function.
@retval EFI_SUCCESS The callback successfully handled the action.
@retval other error Error occur when parse one directory.
**/
EFI_STATUS
EFIAPI
LibCallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
EFI_STATUS Status;
BOOLEAN NeedExit;
NeedExit = TRUE;
if (Action != EFI_BROWSER_ACTION_CHANGING && Action != EFI_BROWSER_ACTION_CHANGED) {
//
// Do nothing for other UEFI Action. Only do call back when data is changed.
//
return EFI_UNSUPPORTED;
}
if (Action == EFI_BROWSER_ACTION_CHANGED) {
if ((Value == NULL) || (ActionRequest == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (QuestionId >= FILE_OPTION_OFFSET) {
LibGetDevicePath(QuestionId);
//
// Process the extra action.
//
if (gFileExplorerPrivate.ChooseHandler != NULL) {
NeedExit = gFileExplorerPrivate.ChooseHandler (gFileExplorerPrivate.RetDevicePath);
}
if (NeedExit) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
}
} else if (Action == EFI_BROWSER_ACTION_CHANGING) {
if (Value == NULL) {
return EFI_INVALID_PARAMETER;
}
if (QuestionId >= FILE_OPTION_OFFSET) {
Status = LibUpdateFileExplorer (QuestionId);
if (EFI_ERROR (Status)) {
return Status;
}
}
}
return EFI_SUCCESS;
}
/**
This function processes the results of changes in configuration.
When user select a interactive opcode, this callback will be triggered.
Based on the Question(QuestionId) that triggers the callback, the corresponding
actions is performed. It handles:
1) Process the axtra action or exit file explorer when user select one file .
2) update of file content if a dir is selected.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Action Specifies the type of action taken by the browser.
@param QuestionId A unique value which is sent to the original exporting driver
so that it can identify the type of data to expect.
@param Type The type of value for the question.
@param Value A pointer to the data being sent to the original exporting driver.
@param ActionRequest On return, points to the action requested by the callback function.
@retval EFI_SUCCESS The callback successfully handled the action.
@retval other error Error occur when parse one directory.
**/
EFI_STATUS
EFIAPI
LibCallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
EFI_STATUS Status;
BOOLEAN NeedExit;
CHAR16 *NewFileName;
CHAR16 *NewFolderName;
NeedExit = TRUE;
NewFileName = NULL;
NewFolderName = NULL;
if (Action != EFI_BROWSER_ACTION_CHANGING && Action != EFI_BROWSER_ACTION_CHANGED) {
//
// Do nothing for other UEFI Action. Only do call back when data is changed.
//
return EFI_UNSUPPORTED;
}
if (Action == EFI_BROWSER_ACTION_CHANGED) {
if ((Value == NULL) || (ActionRequest == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (QuestionId == KEY_VALUE_CREATE_FILE_AND_EXIT) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
if (!IsZeroBuffer (mNewFileName, sizeof (mNewFileName))) {
Status = LibCreateNewFile (mNewFileName,TRUE);
ZeroMem (mNewFileName,sizeof (mNewFileName));
}
}
if (QuestionId == KEY_VALUE_NO_CREATE_FILE_AND_EXIT) {
ZeroMem (mNewFileName,sizeof (mNewFileName));
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
if (QuestionId == KEY_VALUE_CREATE_FOLDER_AND_EXIT) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
if (!IsZeroBuffer (mNewFolderName, sizeof (mNewFolderName))) {
Status = LibCreateNewFile (mNewFolderName, FALSE);
ZeroMem (mNewFolderName,sizeof (mNewFolderName));
}
}
if (QuestionId == KEY_VALUE_NO_CREATE_FOLDER_AND_EXIT) {
ZeroMem (mNewFolderName,sizeof (mNewFolderName));
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
if (QuestionId == NEW_FILE_NAME_ID) {
NewFileName = HiiGetString (gFileExplorerPrivate.FeHiiHandle, Value->string, NULL);
if (NewFileName != NULL) {
StrCpyS (mNewFileName, MAX_FILE_NAME_LEN, NewFileName);
FreePool (NewFileName);
NewFileName = NULL;
} else {
return EFI_INVALID_PARAMETER;
}
}
if (QuestionId == NEW_FOLDER_NAME_ID) {
NewFolderName = HiiGetString (gFileExplorerPrivate.FeHiiHandle, Value->string, NULL);
if (NewFolderName != NULL) {
StrCpyS (mNewFolderName, MAX_FOLDER_NAME_LEN, NewFolderName);
FreePool (NewFolderName);
NewFolderName = NULL;
} else {
return EFI_INVALID_PARAMETER;
}
}
if (QuestionId >= FILE_OPTION_OFFSET) {
LibGetDevicePath(QuestionId);
//
// Process the extra action.
//
if (gFileExplorerPrivate.ChooseHandler != NULL) {
NeedExit = gFileExplorerPrivate.ChooseHandler (gFileExplorerPrivate.RetDevicePath);
}
if (NeedExit) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
}
} else if (Action == EFI_BROWSER_ACTION_CHANGING) {
if (Value == NULL) {
return EFI_INVALID_PARAMETER;
}
if (QuestionId >= FILE_OPTION_OFFSET) {
LibGetDevicePath(QuestionId);
Status = LibUpdateFileExplorer (QuestionId);
if (EFI_ERROR (Status)) {
return Status;
}
}
}
return EFI_SUCCESS;
}
