BOOL OpMenuLoad::LoadFile(CCLexFile* pFileToLoad, UINT32 nPrefFilter)
{
// Make sure we have a valid file to load.
/* TRACEUSER( "JustinF", _T("In OpMenuLoad::LoadFile(%p, %u)\n"),
(LPVOID) pFileToLoad, nPrefFilter);
*/ ERROR3IF(!pFileToLoad, "Null CCLexFile* in OpMenuLoad::LoadFile");
// Find out the position of the filter selected by the user in the open dialog
INT32 SelectedPos = 0;
#if !defined(EXCLUDE_FROM_RALPH) && !defined(EXCLUDE_FROM_XARALX)
SelectedPos = BaseFileDialog::SelectedFilter;
#endif
// Go get the first filter in the list
Filter* pFilter = Filter::GetFirst();
// Do we know which filter was used? (we know nothing about things in the recent file
// list). If we don't, then use the preferred one, by default the generic filter.
if (nPrefFilter != FILTERID_USERCHOICE || SelectedPos == 0)
{
// We know nothing. We will have to go and have a look at all the possibles
// We will find the Filter Family and ask it to try and load the file.
UINT32 nID = (nPrefFilter != FILTERID_USERCHOICE) ? nPrefFilter : FILTERID_GENERIC;
while (pFilter != NULL && pFilter->FilterID != nID)
{
// Try the next filter
pFilter = Filter::GetNext(pFilter);
}
}
else
{
// We know which type of filter the user had selected in the file dialog
// Find the filter that the user chose.
while (pFilter != NULL)
{
// This is the filter?
if (pFilter->GetFlags().CanImport &&
pFilter->pOILFilter->Position == SelectedPos)
break;
// Try the next filter
pFilter = Filter::GetNext(pFilter);
}
}
// Check that the Filter existed
if (pFilter == NULL)
{
// It did not...
InformError(_R(IDT_CANT_FIND_FILTER));
return FALSE;
}
// Get pointer to current doc 'cos we'll need it several times...
Document* pCurDoc = Document::GetCurrent();
// If this is not a filter family, check for compatibility before asking
// filter to load the file.
// This means the user has chosen an explicit filter to handle the import
PathName Path = pFileToLoad->GetPathName();
String_256 FilePath = Path.GetPath();
// FilePath will be null if a pathname is not valid
if (!pFilter->IS_KIND_OF(FilterFamily) && !FilePath.IsEmpty())
{
UINT32 Size = 1024;
size_t FileSize;
ADDR FilterBuf = pFilter->LoadInitialSegment(Path, &Size, &FileSize);
// If there has been a problem in the load initial segment then fail now.
if (FilterBuf == NULL)
{
// Tell the user about the problem and get out now while the goings good
InformError();
return FALSE;
}
// Inform any filters that we are about to do a HowCompatible call.
// This would allow a set of filters which have common functionality hidden in a
// filter that cannot import and cannot export handle this call and hence set
// itself up. This would allow it to maybe cache a result which should only be
// checked by the first filter in the group.
pFilter->PreHowCompatible();
// Change this to be less than 8 as the filters like the Accusoft forms return
// 8 and 9 to make sure that they are last in the chain.
if (pFilter->HowCompatible(Path, FilterBuf, Size, UINT32(FileSize)) < 8)
{
// Not 100% happy with this file - ask for confirmation.
ErrorInfo Question;
Question.ErrorMsg = _R(IDW_OPENQUERY_NOTSURE);
Question.Button[0] = _R(IDB_OPENQUERY_OPEN);
Question.Button[1] = _R(IDB_OPENQUERY_DONTOPEN);
if ((ResourceID)AskQuestion(&Question) != _R(IDB_OPENQUERY_OPEN))
{
// User asked for this to be cancelled.
TRACEUSER( "Tim", _T("Filter compatibility was less than 10\n"));
// Close the file, report the abort and finish.
CCFree(FilterBuf);
//InformMessage(_R(IDT_IMP_USERABORT));
return FALSE;
}
}
// Get rid of initial file header
CCFree(FilterBuf);
}
// we have to try and open the file
try
{
// Found the Filter, so ask it to import the file please
if (!pFilter->DoImport(this, pFileToLoad, pCurDoc))
{
// Something went a bit wrong - tell the user what it was.
// Only tell them if not special user cancelled error message
if (Error::GetErrorNumber() != _R(IDN_USER_CANCELLED))
{
// Only supress the error if not the special user abort error
// ***** For now use the native EPS filter
if (pFilter->FilterID == FILTERID_NATIVE_EPS &&
Error::GetErrorNumber() != _R(IDT_IMPORT_USERABORT))
{
Error::ClearError();
InformError(_R(IDS_ERRORINARTFILE));
}
else
{
// Tell the user what the problem was
InformError();
wxMessageDialog dlg(
NULL,
_T( "Xara LX failed to load the design.\n\n")
_T( "This is an early demonstration version of the program which does ")
_T( "not yet support all of the data types that can appear in XAR designs."),
_T("Load failed"),
wxOK
);
dlg.ShowModal() ;
}
}
else
{
// otherwise remove the error so it won't get reported
Error::ClearError();
}
// and fail
return FALSE;
}
}
// See if there was a file io errir
catch( CFileException )
{
// Report the error if no one else did, otherwise clear it.
if (Error::GetErrorNumber() != _R(IDN_USER_CANCELLED))
InformError();
else
Error::ClearError();
// and fail
return FALSE;
}
// Success.
return TRUE;
}
