A little clarification

[wxWidgets.git] / src / mac / filedlg.cpp

diff --git a/src/mac/filedlg.cpp b/src/mac/filedlg.cpp
index ba8ad73df7644789ed70f41ffdd20a4604b89933..f2cb493f4a84eff4ea571978f045c928cd052af3 100644 (file)
--- a/src/mac/filedlg.cpp
+++ b/src/mac/filedlg.cpp
@@ -1,11 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        filedlg.cpp
 // Purpose:     wxFileDialog
 /////////////////////////////////////////////////////////////////////////////
 // Name:        filedlg.cpp
 // Purpose:     wxFileDialog

-// Author:      AUTHOR
+// Author:      Stefan Csomor

 // Modified by:
 // Modified by:

-// Created:     ??/??/98
+// Created:     1998-01-01

 // RCS-ID:      $Id$
 // RCS-ID:      $Id$

-// Copyright:   (c) AUTHOR
+// Copyright:   (c) Stefan Csomor

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -14,130 +14,662 @@
 #endif
 
 #include "wx/defs.h"
 #endif
 
 #include "wx/defs.h"

+#include "wx/app.h"

 #include "wx/utils.h"
 #include "wx/dialog.h"
 #include "wx/filedlg.h"
 #include "wx/intl.h"
 #include "wx/utils.h"
 #include "wx/dialog.h"
 #include "wx/filedlg.h"
 #include "wx/intl.h"

+#include "wx/tokenzr.h"
+
+#ifndef __DARWIN__
+  #include "PLStringFuncs.h"
+#endif

 
 #if !USE_SHARED_LIBRARY
 
 #if !USE_SHARED_LIBRARY

-IMPLEMENT_CLASS(wxFileDialog, wxDialog)
+IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)
+#endif
+
+// begin wxmac
+
+#include "wx/mac/private.h"
+
+#include <Navigation.h>
+
+#ifdef __DARWIN__
+#  include "MoreFilesX.h"
+#else
+#  include "MoreFiles.h"
+#  include "MoreFilesExtras.h"
+#endif
+
+extern bool gUseNavServices ;
+
+// the data we need to pass to our standard file hook routine
+// includes a pointer to the dialog, a pointer to the standard
+// file reply record (so we can inspect the current selection)
+// and a copy of the "previous" file spec of the reply record
+// so we can see if the selection has changed
+
+struct OpenUserDataRec {
+  int                currentfilter ;
+  bool               saveMode ;
+  wxArrayString      name ;
+  wxArrayString      extensions ;
+  wxArrayLong        filtermactypes ;
+  wxString           defaultLocation;
+#if TARGET_CARBON
+  CFArrayRef         menuitems ;
+#else
+  NavMenuItemSpecArrayHandle menuitems ;
+#endif
+};
+
+typedef struct OpenUserDataRec
+OpenUserDataRec, *OpenUserDataRecPtr;
+
+static pascal void    NavEventProc(
+                                NavEventCallbackMessage        inSelector,
+                                NavCBRecPtr                    ioParams,
+                                NavCallBackUserData            ioUserData);
+
+#if TARGET_CARBON
+        static NavEventUPP    sStandardNavEventFilter = NewNavEventUPP(NavEventProc);
+#else
+        static NavEventUPP    sStandardNavEventFilter = NewNavEventProc(NavEventProc);

 #endif
 
 #endif
 

-WXDLLEXPORT wxString wxFileSelector(const char *title,
-                     const char *defaultDir, const char *defaultFileName,
-                     const char *defaultExtension, const char *filter, int flags,
-                     wxWindow *parent, int x, int y)
+static pascal void
+NavEventProc(
+    NavEventCallbackMessage        inSelector,
+    NavCBRecPtr                    ioParams,
+    NavCallBackUserData    ioUserData    )

 {
 {

-    // If there's a default extension specified but no filter, we create a suitable
-    // filter.
-
-    wxString filter2("");
-    if ( defaultExtension && !filter )
-        filter2 = wxString("*.") + wxString(defaultExtension) ;
-    else if ( filter )
-        filter2 = filter;
-
-    wxString defaultDirString;
-    if (defaultDir)
-        defaultDirString = defaultDir;
-    else
-        defaultDirString = "";
+    OpenUserDataRec * data = ( OpenUserDataRec *) ioUserData ;
+    if (inSelector == kNavCBEvent) {
+#if TARGET_CARBON
+#else
+        wxTheApp->MacHandleOneEvent(ioParams->eventData.eventDataParms.event);
+#endif
+    }
+    else if ( inSelector == kNavCBStart )
+    {
+#if TARGET_CARBON
+        if (data && !(data->defaultLocation).IsEmpty())
+        {
+            // Set default location for the modern Navigation APIs
+            // Apple Technical Q&A 1151
+            FSSpec theFSSpec;
+            wxMacFilename2FSSpec(data->defaultLocation, &theFSSpec);
+            AEDesc theLocation = {typeNull, NULL};
+            if (noErr == ::AECreateDesc(typeFSS, &theFSSpec, sizeof(FSSpec), &theLocation))
+                ::NavCustomControl(ioParams->context, kNavCtlSetLocation, (void *) &theLocation);
+        }
+#else
+        if ( data->menuitems )
+            NavCustomControl(ioParams->context, kNavCtlSelectCustomType, &(*data->menuitems)[data->currentfilter]);
+#endif
+    }
+    else if ( inSelector == kNavCBPopupMenuSelect )
+    {
+        NavMenuItemSpec * menu = (NavMenuItemSpec *) ioParams->eventData.eventDataParms.param ;
+#if TARGET_CARBON
+#else
+        if ( menu->menuCreator == 'WXNG' )
+#endif
+        {
+            data->currentfilter = menu->menuType ;
+            if ( data->saveMode )
+            {
+                int i = menu->menuType ;
+                wxString extension =  data->extensions[i].AfterLast('.') ;
+                extension.MakeLower() ;
+                wxString sfilename ;

 
 

-    wxString defaultFilenameString;
-    if (defaultFileName)
-        defaultFilenameString = defaultFileName;
-    else
-        defaultFilenameString = "";
+#if TARGET_CARBON
+                wxMacCFStringHolder cfString( NavDialogGetSaveFileName( ioParams->context ) , false  );
+                sfilename = cfString.AsString() ;
+#else
+                Str255 filename ;
+                // get the current filename
+                NavCustomControl(ioParams->context, kNavCtlGetEditFileName, &filename);
+                sfilename = wxMacMakeStringFromPascal( filename ) ;
+#endif
+
+                int pos = sfilename.Find('.', true) ;
+                if ( pos != wxNOT_FOUND )
+                {
+                    sfilename = sfilename.Left(pos+1)+extension ;
+#if TARGET_CARBON
+                    cfString = sfilename ;
+                    NavDialogSetSaveFileName( ioParams->context , cfString ) ;
+#else
+                    wxMacStringToPascal( sfilename , filename ) ;
+                    NavCustomControl(ioParams->context, kNavCtlSetEditFileName, &filename);
+#endif
+                }
+            }
+        }
+    }
+}
+
+const wxChar * gfilters[] =
+{
+    wxT("*.TXT") ,
+    wxT("*.TIF") ,
+    wxT("*.JPG") ,

 
 

-    wxFileDialog fileDialog(parent, title, defaultDirString, defaultFilenameString, filter2, flags, wxPoint(x, y));
+    NULL
+} ;

 
 

-    if ( fileDialog.ShowModal() == wxID_OK )
+OSType gfiltersmac[] =
+{
+    'TEXT' ,
+    'TIFF' ,
+    'JPEG' ,
+
+    '****'
+} ;
+
+
+void MakeUserDataRec(OpenUserDataRec    *myData , const wxString& filter )
+{
+    myData->menuitems = NULL ;
+    myData->currentfilter = 0 ;
+    myData->saveMode = false ;
+
+    if ( filter && filter[0] )

     {
     {

-        strcpy(wxBuffer, (const char *)fileDialog.GetPath());
-        return wxBuffer;
+        wxString filter2(filter) ;
+        int filterIndex = 0;
+        bool isName = true ;
+        wxString current ;
+        for( unsigned int i = 0; i < filter2.Len() ; i++ )
+        {
+            if( filter2.GetChar(i) == wxT('|') )
+            {
+                if( isName ) {
+                    myData->name.Add( current ) ;
+                }
+                else {
+                    myData->extensions.Add( current.MakeUpper() ) ;
+                    ++filterIndex ;
+                }
+                isName = !isName ;
+                current = wxEmptyString ;
+            }
+            else
+            {
+                current += filter2.GetChar(i) ;
+            }
+        }
+        // we allow for compatibility reason to have a single filter expression (like *.*) without
+        // an explanatory text, in that case the first part is name and extension at the same time
+
+        wxASSERT_MSG( filterIndex == 0 || !isName , wxT("incorrect format of format string") ) ;
+        if ( current.IsEmpty() )
+            myData->extensions.Add( myData->name[filterIndex] ) ;
+        else
+            myData->extensions.Add( current.MakeUpper() ) ;
+        if ( filterIndex == 0 || isName )
+            myData->name.Add( current.MakeUpper() ) ;
+
+        ++filterIndex ;
+
+        const size_t extCount = myData->extensions.GetCount();
+        for ( size_t i = 0 ; i < extCount; i++ )
+        {
+            int j ;
+            for ( j = 0 ; gfilters[j] ; j++ )
+            {
+                if ( myData->extensions[i] == gfilters[j]  )
+                {
+                    myData->filtermactypes.Add( gfiltersmac[j] ) ;
+                    break ;
+                }
+            }
+            if( gfilters[j] == NULL )
+            {
+                myData->filtermactypes.Add( '****' ) ;
+            }
+        }

     }
     }

-    else
-        return NULL;

 }
 
 }
 

-WXDLLEXPORT wxString wxFileSelectorEx(const char *title,
-                       const char *defaultDir,
-                       const char *defaultFileName,
-                       int* defaultFilterIndex,
-                       const char *filter,
-                       int       flags,
-                       wxWindow* parent,
-                       int       x,
-                       int       y)
+static Boolean CheckFile( const wxString &filename , OSType type , OpenUserDataRecPtr data)
+{
+    wxString file(filename) ;
+    file.MakeUpper() ;
+
+    if ( data->extensions.GetCount() > 0 )
+    {
+        //for ( int i = 0 ; i < data->numfilters ; ++i )
+        int i = data->currentfilter ;
+        if ( data->extensions[i].Right(2) == wxT(".*") )
+            return true ;
+
+        {
+            if ( type == (OSType)data->filtermactypes[i] )
+                return true ;
+
+            wxStringTokenizer tokenizer( data->extensions[i] , wxT(";") ) ;
+            while( tokenizer.HasMoreTokens() )
+            {
+                wxString extension = tokenizer.GetNextToken() ;
+                if ( extension.GetChar(0) == '*' )
+                    extension = extension.Mid(1) ;

 
 

+                if ( file.Len() >= extension.Len() && extension == file.Right(extension.Len() ) )
+                    return true ;
+            }
+        }
+        return false ;
+    }
+    return true ;
+}
+
+#ifndef __DARWIN__
+static pascal Boolean CrossPlatformFileFilter(CInfoPBPtr myCInfoPBPtr, void *dataPtr)

 {
 {

-    wxFileDialog fileDialog(parent, title ? title : "", defaultDir ? defaultDir : "",
-        defaultFileName ? defaultFileName : "", filter ? filter : "", flags, wxPoint(x, y));
+    OpenUserDataRecPtr data = (OpenUserDataRecPtr) dataPtr ;
+    // return true if this item is invisible or a file
+
+    Boolean visibleFlag;
+    Boolean folderFlag;
+
+    visibleFlag = ! (myCInfoPBPtr->hFileInfo.ioFlFndrInfo.fdFlags & kIsInvisible);
+    folderFlag = (myCInfoPBPtr->hFileInfo.ioFlAttrib & 0x10);
+
+    // because the semantics of the filter proc are "true means don't show
+    // it" we need to invert the result that we return

 
 

-    if ( fileDialog.ShowModal() == wxID_OK )
+    if ( !visibleFlag )
+        return true ;
+
+    if ( !folderFlag )

     {
     {

-        *defaultFilterIndex = fileDialog.GetFilterIndex();
-        strcpy(wxBuffer, (const char *)fileDialog.GetPath());
-        return wxBuffer;
+        wxString file = wxMacMakeStringFromPascal( myCInfoPBPtr->hFileInfo.ioNamePtr ) ;
+        return !CheckFile( file , myCInfoPBPtr->hFileInfo.ioFlFndrInfo.fdType , data ) ;

     }
     }

-    else
-        return NULL;
+
+    return false ;

 }
 }

+#endif
+
+// end wxmac

 
 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
         const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
         long style, const wxPoint& pos)
 
 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
         const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
         long style, const wxPoint& pos)

+             :wxFileDialogBase(parent, message, defaultDir, defaultFileName, wildCard, style, pos)

 {
 {

-    m_message = message;
-    m_dialogStyle = style;
-    m_parent = parent;
-    m_path = "";
-    m_fileName = defaultFileName;
-    m_dir = defaultDir;
-    m_wildCard = wildCard;
-    m_filterIndex = 1;
+    wxASSERT_MSG( NavServicesAvailable() , wxT("Navigation Services are not running") ) ;

 }
 
 }
 

-int wxFileDialog::ShowModal()
+pascal Boolean CrossPlatformFilterCallback (
+    AEDesc *theItem,
+    void *info,
+    void *callBackUD,
+    NavFilterModes filterMode
+)

 {
 {

-    // TODO
-    return wxID_CANCEL;
-}
+    bool display = true;
+    OpenUserDataRecPtr data = (OpenUserDataRecPtr) callBackUD ;

 
 

-// Generic file load/save dialog
-static wxString
-wxDefaultFileSelector(bool load, const char *what, const char *extension, const char *default_name, wxWindow *parent)
-{
-  char *ext = (char *)extension;
-  
-  char prompt[50];
-  wxString str;
-  if (load)
-    str = "Load %s file";
-  else
-    str = "Save %s file";
-  sprintf(prompt, wxGetTranslation(str), what);
-
-  if (*ext == '.') ext++;
-  char wild[60];
-  sprintf(wild, "*.%s", ext);
-
-  return wxFileSelector (prompt, NULL, default_name, ext, wild, 0, parent);
+    if (filterMode == kNavFilteringBrowserList)
+    {
+        NavFileOrFolderInfo* theInfo = (NavFileOrFolderInfo*) info ;
+        if ( !theInfo->isFolder )
+        {
+            if (theItem->descriptorType == typeFSS )
+            {
+                FSSpec    spec;
+                memcpy( &spec , *theItem->dataHandle , sizeof(FSSpec) ) ;
+                wxString file = wxMacMakeStringFromPascal( spec.name ) ;
+                display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
+            }
+ #if TARGET_CARBON
+            else if ( theItem->descriptorType == typeFSRef )
+            {
+                FSRef fsref ;
+                memcpy( &fsref , *theItem->dataHandle , sizeof(FSRef) ) ;
+                wxString file ;
+                const short maxpath = 1024 ;
+                FSRefMakePath( &fsref , (UInt8*) file.GetWriteBuf(maxpath+1),maxpath) ;
+                file.UngetWriteBuf() ;
+                display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
+            }
+#endif
+        }
+    }
+
+    return display;

 }
 
 }
 

-// Generic file load dialog
-wxString
-wxLoadFileSelector(const char *what, const char *extension, const char *default_name, wxWindow *parent)
+int wxFileDialog::ShowModal()

 {
 {

-  return wxDefaultFileSelector(TRUE, what, extension, default_name, parent);
-}
+#if TARGET_CARBON
+    OSErr err;
+    NavDialogCreationOptions dialogCreateOptions;
+    // set default options
+    ::NavGetDefaultDialogCreationOptions(&dialogCreateOptions);

 
 

+    // this was always unset in the old code
+    dialogCreateOptions.optionFlags &= ~kNavSelectDefaultLocation;

 
 

-// Generic file save dialog
-wxString
-wxSaveFileSelector(const char *what, const char *extension, const char *default_name, wxWindow *parent)
-{
-  return wxDefaultFileSelector(FALSE, what, extension, default_name, parent);
-}
+#if wxUSE_UNICODE
+    // tried using wxMacCFStringHolder in the code below, but it seems
+    // the CFStrings were being released before the save dialog was called,
+    // causing a crash - open dialog works fine with or without wxMacCFStringHolder
+    CFStringRef titleRef = ::CFStringCreateWithCharacters( kCFAllocatorDefault,
+                                (const unsigned short*)m_message.wc_str(), 
+                                m_message.Len() );
+#else
+    CFStringRef titleRef = ::CFStringCreateWithCString(NULL,
+                                                       m_message.c_str(),
+                                                       CFStringGetSystemEncoding());
+#endif
+    dialogCreateOptions.windowTitle = titleRef;
+#if wxUSE_UNICODE
+    CFStringRef defaultFileNameRef = ::CFStringCreateWithCharacters( kCFAllocatorDefault,
+                                        (const unsigned short*)m_fileName.wc_str(), 
+                                        m_fileName.Len() );
+#else
+    CFStringRef defaultFileNameRef = ::CFStringCreateWithCString(NULL,
+                                                                 m_fileName.c_str(),
+                                                                 CFStringGetSystemEncoding());
+#endif
+    dialogCreateOptions.saveFileName = defaultFileNameRef;
+    NavDialogRef dialog;
+    NavObjectFilterUPP navFilterUPP = NULL;
+    CFArrayRef cfArray = NULL; // for popupExtension
+    OpenUserDataRec myData;
+    myData.defaultLocation = m_dir;
+
+    if (m_dialogStyle & wxSAVE)
+    {
+        dialogCreateOptions.optionFlags |= kNavNoTypePopup;
+        dialogCreateOptions.optionFlags |= kNavDontAutoTranslate;
+        dialogCreateOptions.optionFlags |= kNavDontAddTranslateItems;
+
+        // The extension is important
+        dialogCreateOptions.optionFlags |= kNavPreserveSaveFileExtension;
+
+        err = ::NavCreatePutFileDialog(&dialogCreateOptions,
+                                       'TEXT',
+                                       'TEXT',
+                                       sStandardNavEventFilter,
+                                       &myData, // for defaultLocation
+                                       &dialog);
+    }
+    else
+    {
+        MakeUserDataRec(&myData , m_wildCard);
+        size_t numfilters = myData.extensions.GetCount();
+        if (numfilters > 0)
+        {
+            CFMutableArrayRef popup = CFArrayCreateMutable( kCFAllocatorDefault ,
+                numfilters , &kCFTypeArrayCallBacks ) ;
+            dialogCreateOptions.popupExtension = popup ;
+            myData.menuitems = dialogCreateOptions.popupExtension ;
+            for ( size_t i = 0 ; i < numfilters ; ++i )
+            {
+                CFArrayAppendValue( popup , (CFStringRef) wxMacCFStringHolder( myData.name[i] ) ) ;
+            }
+        }
+
+        navFilterUPP = NewNavObjectFilterUPP(CrossPlatformFilterCallback);
+        err = ::NavCreateGetFileDialog(&dialogCreateOptions,
+                                       NULL, // NavTypeListHandle
+                                       sStandardNavEventFilter,
+                                       NULL, // NavPreviewUPP
+                                       navFilterUPP,
+                                       (void *) &myData, // inClientData
+                                       &dialog);
+    }
+
+    if (err == noErr)
+        err = ::NavDialogRun(dialog);
+
+    // clean up filter related data, etc.
+    if (navFilterUPP)
+        ::DisposeNavObjectFilterUPP(navFilterUPP);
+    if (cfArray)
+    {
+        CFIndex n = ::CFArrayGetCount(cfArray);
+        for (CFIndex i = 0; i < n; i++)
+        {
+            CFStringRef str = (CFStringRef) ::CFArrayGetValueAtIndex(cfArray, i);
+            if (str)
+                ::CFRelease(str);
+        }
+        ::CFRelease(cfArray);
+    }
+    if (titleRef)
+        ::CFRelease(titleRef);
+    if (defaultFileNameRef)
+        ::CFRelease(defaultFileNameRef);
+    if (err != noErr)
+        return wxID_CANCEL;
+
+    NavReplyRecord navReply;
+    err = ::NavDialogGetReply(dialog, &navReply);
+    if (err == noErr && navReply.validRecord)
+    {
+        AEKeyword   theKeyword;
+        DescType    actualType;
+        Size        actualSize;
+        FSRef       theFSRef;
+        wxString thePath ;
+        long count;
+        ::AECountItems(&navReply.selection , &count);
+        for (long i = 1; i <= count; ++i)
+        {
+            err = ::AEGetNthPtr(&(navReply.selection), 1, typeFSRef, &theKeyword, &actualType,
+                                &theFSRef, sizeof(theFSRef), &actualSize);
+            if (err != noErr)
+                break;
+
+            CFURLRef fullURLRef;
+            if (m_dialogStyle & wxSAVE)
+            {
+                CFURLRef parentURLRef = ::CFURLCreateFromFSRef(NULL, &theFSRef);
+
+                if (parentURLRef)
+                {
+                    fullURLRef =
+                        ::CFURLCreateCopyAppendingPathComponent(NULL,
+                                                                parentURLRef,
+                                                                navReply.saveFileName,
+                                                                false);
+                    ::CFRelease(parentURLRef);
+                }
+            }
+            else
+            {
+                fullURLRef = ::CFURLCreateFromFSRef(NULL, &theFSRef);
+            }
+#ifdef __UNIX__
+            CFURLPathStyle pathstyle = kCFURLPOSIXPathStyle;
+#else
+            CFURLPathStyle pathstyle = kCFURLHFSPathStyle;
+#endif
+            CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, pathstyle);
+            thePath = wxMacCFStringHolder(cfString).AsString();
+            if (!thePath)
+            {
+                ::NavDisposeReply(&navReply);
+                return wxID_CANCEL;
+            }
+            m_path = thePath;
+            m_paths.Add(m_path);
+            m_fileName = wxFileNameFromPath(m_path);
+            m_fileNames.Add(m_fileName);
+        }
+        // set these to the first hit
+        m_path = m_paths[0];
+        m_fileName = wxFileNameFromPath(m_path);
+        m_dir = wxPathOnly(m_path);
+    }
+    ::NavDisposeReply(&navReply);
+
+    return (err == noErr) ? wxID_OK : wxID_CANCEL;
+#else // TARGET_CARBON
+
+    NavDialogOptions           mNavOptions;
+    NavObjectFilterUPP           mNavFilterUPP = NULL;
+    NavPreviewUPP           mNavPreviewUPP = NULL ;
+    NavReplyRecord           mNavReply;
+    AEDesc               mDefaultLocation ;
+    bool               mSelectDefault = false ;
+    OSStatus            err = noErr ;
+    // setup dialog
+
+    mNavFilterUPP    = nil;
+    mNavPreviewUPP    = nil;
+    mSelectDefault    = false;
+    mDefaultLocation.descriptorType = typeNull;
+    mDefaultLocation.dataHandle     = nil;
+
+    NavGetDefaultDialogOptions(&mNavOptions);
+    wxMacStringToPascal( m_message , (StringPtr)mNavOptions.message ) ;
+    wxMacStringToPascal( m_fileName , (StringPtr)mNavOptions.savedFileName ) ;
+
+    // Set default location, the location
+    //   that's displayed when the dialog
+    //   first appears

 
 

+    FSSpec location ;
+    wxMacFilename2FSSpec( m_dir , &location ) ;
+
+    err = ::AECreateDesc(typeFSS, &location, sizeof(FSSpec), &mDefaultLocation );
+
+    if ( mDefaultLocation.dataHandle )
+    {
+        if (mSelectDefault)
+        {
+            mNavOptions.dialogOptionFlags |= kNavSelectDefaultLocation;
+        } else {
+            mNavOptions.dialogOptionFlags &= ~kNavSelectDefaultLocation;
+        }
+    }
+
+    memset( &mNavReply , 0 , sizeof( mNavReply ) ) ;
+    mNavReply.validRecord = false;
+    mNavReply.replacing = false;
+    mNavReply.isStationery = false;
+    mNavReply.translationNeeded = false;
+    mNavReply.selection.descriptorType = typeNull;
+    mNavReply.selection.dataHandle = nil;
+    mNavReply.keyScript = smSystemScript;
+    mNavReply.fileTranslation = nil;
+    mNavReply.version = kNavReplyRecordVersion ;
+
+    // zero all data
+
+    m_path = wxEmptyString ;
+    m_fileName = wxEmptyString ;
+    m_paths.Empty();
+    m_fileNames.Empty();
+
+    OpenUserDataRec            myData;
+    MakeUserDataRec( &myData , m_wildCard ) ;
+    myData.currentfilter = m_filterIndex ;
+    if ( myData.extensions.GetCount() > 0 )
+    {
+        mNavOptions.popupExtension = (NavMenuItemSpecArrayHandle) NewHandle( sizeof( NavMenuItemSpec ) * myData.extensions.GetCount() ) ;
+        myData.menuitems = mNavOptions.popupExtension ;
+        for ( size_t i = 0 ; i < myData.extensions.GetCount() ; ++i )
+        {
+            (*mNavOptions.popupExtension)[i].version     = kNavMenuItemSpecVersion ;
+            (*mNavOptions.popupExtension)[i].menuCreator = 'WXNG' ;
+            // TODO : according to the new docs  -1 to 10 are reserved for the OS
+            (*mNavOptions.popupExtension)[i].menuType    = i ;
+            wxMacStringToPascal( myData.name[i] , (StringPtr)(*mNavOptions.popupExtension)[i].menuItemName ) ;
+        }
+    }
+    if ( m_dialogStyle & wxSAVE )
+    {
+        myData.saveMode = true ;
+
+        mNavOptions.dialogOptionFlags |= kNavDontAutoTranslate ;
+        mNavOptions.dialogOptionFlags |= kNavDontAddTranslateItems ;
+
+        err = ::NavPutFile(
+                           &mDefaultLocation,
+                           &mNavReply,
+                           &mNavOptions,
+                           sStandardNavEventFilter ,
+                           NULL,
+                           kNavGenericSignature,
+                           &myData);                    // User Data
+        m_filterIndex = myData.currentfilter ;
+    }
+    else
+    {
+        myData.saveMode = false ;
+
+        mNavFilterUPP = NewNavObjectFilterUPP( CrossPlatformFilterCallback ) ;
+        if ( m_dialogStyle & wxMULTIPLE )
+            mNavOptions.dialogOptionFlags |= kNavAllowMultipleFiles ;
+        else
+            mNavOptions.dialogOptionFlags &= ~kNavAllowMultipleFiles ;
+
+        err = ::NavGetFile(
+                           &mDefaultLocation,
+                           &mNavReply,
+                           &mNavOptions,
+                           sStandardNavEventFilter ,
+                           mNavPreviewUPP,
+                           mNavFilterUPP,
+                           NULL ,
+                           &myData);
+        m_filterIndex = myData.currentfilter ;
+    }
+
+    DisposeNavObjectFilterUPP(mNavFilterUPP);
+    if ( mDefaultLocation.dataHandle != nil )
+    {
+        ::AEDisposeDesc(&mDefaultLocation);
+    }
+
+    if ( (err != noErr) && (err != userCanceledErr) ) {
+        return wxID_CANCEL ;
+    }
+
+    if (mNavReply.validRecord)
+    {
+        FSSpec  outFileSpec ;
+        AEDesc specDesc ;
+        AEKeyword keyWord ;
+
+        long count ;
+        ::AECountItems( &mNavReply.selection , &count ) ;
+        for ( long i = 1 ; i <= count ; ++i )
+        {
+            OSErr err = ::AEGetNthDesc( &mNavReply.selection , i , typeFSS, &keyWord , &specDesc);
+            if ( err != noErr )
+            {
+                m_path = wxT("") ;
+                return wxID_CANCEL ;
+            }
+            outFileSpec = **(FSSpec**) specDesc.dataHandle;
+            if (specDesc.dataHandle != nil) {
+                ::AEDisposeDesc(&specDesc);
+            }
+            m_path = wxMacFSSpec2MacFilename( &outFileSpec ) ;
+
+            m_paths.Add( m_path ) ;
+            m_fileName = wxFileNameFromPath(m_path);
+            m_fileNames.Add(m_fileName);
+        }
+        // set these to the first hit
+        m_path = m_paths[ 0 ] ;
+        m_fileName = wxFileNameFromPath(m_path);
+        m_dir = wxPathOnly(m_path);
+        NavDisposeReply( &mNavReply ) ;
+        return wxID_OK ;
+    }
+    return wxID_CANCEL;
+#endif // TARGET_CARBON
+}