OpMenuLoad Class Reference

Imports the specified file as NativeEPS. More...

#include <nativeop.h>

Inheritance diagram for OpMenuLoad:

List of all members.

Public Member Functions
virtual void	DoWithParam (OpDescriptor *, OpParam *pOpParam)
	Loads a Camelot Native EPS file.
virtual BOOL	MayChangeNodeBounds () const
Static Public Member Functions
static BOOL	Init ()
	Registers the opdescriptor for the Native Load operation.
static OpState	GetState (String_256 *, OpDescriptor *)
	Yet another annoying OpState function that does nothing.
Protected Member Functions
BOOL	LoadFile (CCLexFile *pFileToLoad, UINT32 nPrefFilter)
	Tries to load the file specified. If it is not a Camelot file then it should report errors etc. Most of this function is actually looking for the Native Load/Save filter to try and load.

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Detailed Description

Imports the specified file as NativeEPS.

Author:

Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>

Date:

21/12/94

Definition at line 144 of file nativeop.h.

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Member Function Documentation

void OpMenuLoad::DoWithParam (  OpDescriptor *  , OpParam *  pOpParam )  [virtual]

Loads a Camelot Native EPS file. Author: Justin_Flude (Xara Group Ltd) <camelotdev@xara.com> Date: 18/8/96 Parameters: OpDescriptor  - Not Used. [INPUTS] pOpParam->Param1 - a pointer to the NativeFileOpParams for this invokation. Reimplemented from Operation. Definition at line 240 of file nativeop.cpp. { // Extract the parameters. NativeFileOpParams* ppm = (NativeFileOpParams*)(void *)(pOpParam->Param1); // Try to load the file. ERROR3IF(!ppm->pFile, "Null CCLexFile* in OpMenuLoad::DoWithParam"); ppm->fStatus = ppm->pFile && LoadFile(ppm->pFile, ppm->nPrefFilter); if (!ppm->fStatus) FailAndExecute(); // Before we call End() we must ensure that CurrentDoc == SelectedDoc Document::GetSelected()->SetCurrent(); End(); }

OpState OpMenuLoad::GetState (  String_256 *  , OpDescriptor *  )  [static]

Yet another annoying OpState function that does nothing. Author: Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com> Date: 21/12/94 Definition at line 221 of file nativeop.cpp. { // Dunno OpState Blobby; return Blobby; }

BOOL OpMenuLoad::Init (  void   )  [static]

Registers the opdescriptor for the Native Load operation. Author: Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com> Date: 21/12/94 Returns: TRUE if it worked, FALSE if not. Reimplemented from SimpleCCObject. Definition at line 198 of file nativeop.cpp. { // Register this operations descriptor return RegisterOpDescriptor(0, _R(IDT_IMPORT), CC_RUNTIME_CLASS(OpMenuLoad), OPTOKEN_NATIVELOAD, GetState, 0, _R(IDBBL_IMPORTFILEOP), 0,0,SYSTEMBAR_ILLEGAL, TRUE, FALSE, TRUE); return false; }

BOOL OpMenuLoad::LoadFile (  CCLexFile *  pFileToLoad, UINT32  nPrefFilter )  [protected]

Tries to load the file specified. If it is not a Camelot file then it should report errors etc. Most of this function is actually looking for the Native Load/Save filter to try and load. Author: Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com> & JustinF Date: 3/1/95 Parameters: pFileToLoad  - the file to load from. [INPUTS] nPreFilter - the ID of the filter to use Returns: TRUE if it worked, FALSE if it failed See also: OpMenuLoad; RecentFileOp Definition at line 271 of file nativeop.cpp. { // 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; }

virtual BOOL OpMenuLoad::MayChangeNodeBounds (   )  const [inline, virtual]

Reimplemented from SelOperation. Definition at line 155 of file nativeop.h. { return FALSE; }

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The documentation for this class was generated from the following files:

• Kernel/nativeop.h (r1785/r1282)
• Kernel/nativeop.cpp (r1785/r1461)

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