src/mac/carbon/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        filedlg.cpp
   3 // Purpose:     wxFileDialog
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "filedlg.h"
  14 #endif
  15
  16 #include "wx/defs.h"
  17 #include "wx/app.h"
  18 #include "wx/utils.h"
  19 #include "wx/dialog.h"
  20 #include "wx/filedlg.h"
  21 #include "wx/intl.h"
  22 #include "wx/tokenzr.h"
  23 #include "wx/filename.h"
  24
  25 #ifndef __DARWIN__
  26   #include "PLStringFuncs.h"
  27 #endif
  28
  29 #if !USE_SHARED_LIBRARY
  30 IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)
  31 #endif
  32
  33 // begin wxmac
  34
  35 #include "wx/mac/private.h"
  36
  37 #include <Navigation.h>
  38
  39 #ifdef __DARWIN__
  40 #  include "MoreFilesX.h"
  41 #else
  42 #  include "MoreFiles.h"
  43 #  include "MoreFilesExtras.h"
  44 #endif
  45
  46 extern bool gUseNavServices ;
  47
  48 // the data we need to pass to our standard file hook routine
  49 // includes a pointer to the dialog, a pointer to the standard
  50 // file reply record (so we can inspect the current selection)
  51 // and a copy of the "previous" file spec of the reply record
  52 // so we can see if the selection has changed
  53
  54 struct OpenUserDataRec {
  55   int                currentfilter ;
  56   bool               saveMode ;
  57   wxArrayString      name ;
  58   wxArrayString      extensions ;
  59   wxArrayLong        filtermactypes ;
  60   wxString           defaultLocation;
  61 #if TARGET_CARBON
  62   CFArrayRef         menuitems ;
  63 #else
  64   NavMenuItemSpecArrayHandle menuitems ;
  65 #endif
  66 };
  67
  68 typedef struct OpenUserDataRec
  69 OpenUserDataRec, *OpenUserDataRecPtr;
  70
  71 static pascal void    NavEventProc(
  72                                 NavEventCallbackMessage        inSelector,
  73                                 NavCBRecPtr                    ioParams,
  74                                 NavCallBackUserData            ioUserData);
  75
  76 #if TARGET_CARBON
  77         static NavEventUPP    sStandardNavEventFilter = NewNavEventUPP(NavEventProc);
  78 #else
  79         static NavEventUPP    sStandardNavEventFilter = NewNavEventProc(NavEventProc);
  80 #endif
  81
  82 static pascal void
  83 NavEventProc(
  84     NavEventCallbackMessage        inSelector,
  85     NavCBRecPtr                    ioParams,
  86     NavCallBackUserData    ioUserData    )
  87 {
  88     OpenUserDataRec * data = ( OpenUserDataRec *) ioUserData ;
  89     if (inSelector == kNavCBEvent) {
  90 #if TARGET_CARBON
  91 #else
  92         wxTheApp->MacHandleOneEvent(ioParams->eventData.eventDataParms.event);
  93 #endif
  94     }
  95     else if ( inSelector == kNavCBStart )
  96     {
  97 #if TARGET_CARBON
  98         if (data && !(data->defaultLocation).IsEmpty())
  99         {
 100             // Set default location for the modern Navigation APIs
 101             // Apple Technical Q&A 1151
 102             FSSpec theFSSpec;
 103             wxMacFilename2FSSpec(data->defaultLocation, &theFSSpec);
 104             AEDesc theLocation = {typeNull, NULL};
 105             if (noErr == ::AECreateDesc(typeFSS, &theFSSpec, sizeof(FSSpec), &theLocation))
 106                 ::NavCustomControl(ioParams->context, kNavCtlSetLocation, (void *) &theLocation);
 107         }
 108 #else
 109         if ( data->menuitems )
 110             NavCustomControl(ioParams->context, kNavCtlSelectCustomType, &(*data->menuitems)[data->currentfilter]);
 111 #endif
 112     }
 113     else if ( inSelector == kNavCBPopupMenuSelect )
 114     {
 115         NavMenuItemSpec * menu = (NavMenuItemSpec *) ioParams->eventData.eventDataParms.param ;
 116 #if TARGET_CARBON
 117 #else
 118         if ( menu->menuCreator == 'WXNG' )
 119 #endif
 120         {
 121             data->currentfilter = menu->menuType ;
 122             if ( data->saveMode )
 123             {
 124                 int i = menu->menuType ;
 125                 wxString extension =  data->extensions[i].AfterLast('.') ;
 126                 extension.MakeLower() ;
 127                 wxString sfilename ;
 128
 129 #if TARGET_CARBON
 130                 wxMacCFStringHolder cfString( NavDialogGetSaveFileName( ioParams->context ) , false  );
 131                 sfilename = cfString.AsString() ;
 132 #else
 133                 Str255 filename ;
 134                 // get the current filename
 135                 NavCustomControl(ioParams->context, kNavCtlGetEditFileName, &filename);
 136                 sfilename = wxMacMakeStringFromPascal( filename ) ;
 137 #endif
 138
 139                 int pos = sfilename.Find('.', true) ;
 140                 if ( pos != wxNOT_FOUND )
 141                 {
 142                     sfilename = sfilename.Left(pos+1)+extension ;
 143 #if TARGET_CARBON
 144                     cfString.Assign( sfilename , wxFONTENCODING_DEFAULT ) ;
 145                     NavDialogSetSaveFileName( ioParams->context , cfString ) ;
 146 #else
 147                     wxMacStringToPascal( sfilename , filename ) ;
 148                     NavCustomControl(ioParams->context, kNavCtlSetEditFileName, &filename);
 149 #endif
 150                 }
 151             }
 152         }
 153     }
 154 }
 155
 156
 157 void MakeUserDataRec(OpenUserDataRec    *myData , const wxString& filter )
 158 {
 159     myData->menuitems = NULL ;
 160     myData->currentfilter = 0 ;
 161     myData->saveMode = false ;
 162
 163     if ( filter && filter[0] )
 164     {
 165         wxString filter2(filter) ;
 166         int filterIndex = 0;
 167         bool isName = true ;
 168         wxString current ;
 169         for( unsigned int i = 0; i < filter2.Len() ; i++ )
 170         {
 171             if( filter2.GetChar(i) == wxT('|') )
 172             {
 173                 if( isName ) {
 174                     myData->name.Add( current ) ;
 175                 }
 176                 else {
 177                     myData->extensions.Add( current.MakeUpper() ) ;
 178                     ++filterIndex ;
 179                 }
 180                 isName = !isName ;
 181                 current = wxEmptyString ;
 182             }
 183             else
 184             {
 185                 current += filter2.GetChar(i) ;
 186             }
 187         }
 188         // we allow for compatibility reason to have a single filter expression (like *.*) without
 189         // an explanatory text, in that case the first part is name and extension at the same time
 190
 191         wxASSERT_MSG( filterIndex == 0 || !isName , wxT("incorrect format of format string") ) ;
 192         if ( current.IsEmpty() )
 193             myData->extensions.Add( myData->name[filterIndex] ) ;
 194         else
 195             myData->extensions.Add( current.MakeUpper() ) ;
 196         if ( filterIndex == 0 || isName )
 197             myData->name.Add( current.MakeUpper() ) ;
 198
 199         ++filterIndex ;
 200
 201         const size_t extCount = myData->extensions.GetCount();
 202         for ( size_t i = 0 ; i < extCount; i++ )
 203         {
 204             wxUint32 fileType;
 205             wxUint32 creator;
 206             wxString extension = myData->extensions[i];
 207
 208             if (extension.GetChar(0) == '*')
 209                 extension = extension.Mid(1);   // Remove leading *
 210
 211             if (extension.GetChar(0) == '.')
 212             {
 213                 extension = extension.Mid(1);   // Remove leading .
 214             }
 215
 216             if (wxFileName::MacFindDefaultTypeAndCreator( extension, &fileType, &creator ))
 217             {
 218                 myData->filtermactypes.Add( (OSType)fileType );
 219             }
 220             else
 221             {
 222                 myData->filtermactypes.Add( '****' ) ;          // We'll fail safe if it's not recognized
 223                 }
 224         }
 225     }
 226 }
 227
 228 static Boolean CheckFile( const wxString &filename , OSType type , OpenUserDataRecPtr data)
 229 {
 230     wxString file(filename) ;
 231     file.MakeUpper() ;
 232
 233     if ( data->extensions.GetCount() > 0 )
 234     {
 235         //for ( int i = 0 ; i < data->numfilters ; ++i )
 236         int i = data->currentfilter ;
 237         if ( data->extensions[i].Right(2) == wxT(".*") )
 238             return true ;
 239
 240         {
 241             if ( type == (OSType)data->filtermactypes[i] )
 242                 return true ;
 243
 244             wxStringTokenizer tokenizer( data->extensions[i] , wxT(";") ) ;
 245             while( tokenizer.HasMoreTokens() )
 246             {
 247                 wxString extension = tokenizer.GetNextToken() ;
 248                 if ( extension.GetChar(0) == '*' )
 249                     extension = extension.Mid(1) ;
 250
 251                 if ( file.Len() >= extension.Len() && extension == file.Right(extension.Len() ) )
 252                     return true ;
 253             }
 254         }
 255         return false ;
 256     }
 257     return true ;
 258 }
 259
 260 #ifndef __DARWIN__
 261 static pascal Boolean CrossPlatformFileFilter(CInfoPBPtr myCInfoPBPtr, void *dataPtr)
 262 {
 263     OpenUserDataRecPtr data = (OpenUserDataRecPtr) dataPtr ;
 264     // return true if this item is invisible or a file
 265
 266     Boolean visibleFlag;
 267     Boolean folderFlag;
 268
 269     visibleFlag = ! (myCInfoPBPtr->hFileInfo.ioFlFndrInfo.fdFlags & kIsInvisible);
 270     folderFlag = (myCInfoPBPtr->hFileInfo.ioFlAttrib & 0x10);
 271
 272     // because the semantics of the filter proc are "true means don't show
 273     // it" we need to invert the result that we return
 274
 275     if ( !visibleFlag )
 276         return true ;
 277
 278     if ( !folderFlag )
 279     {
 280         wxString file = wxMacMakeStringFromPascal( myCInfoPBPtr->hFileInfo.ioNamePtr ) ;
 281         return !CheckFile( file , myCInfoPBPtr->hFileInfo.ioFlFndrInfo.fdType , data ) ;
 282     }
 283
 284     return false ;
 285 }
 286 #endif
 287
 288 // end wxmac
 289
 290 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 291         const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
 292         long style, const wxPoint& pos)
 293              :wxFileDialogBase(parent, message, defaultDir, defaultFileName, wildCard, style, pos)
 294 {
 295     wxASSERT_MSG( NavServicesAvailable() , wxT("Navigation Services are not running") ) ;
 296 }
 297
 298 pascal Boolean CrossPlatformFilterCallback (
 299     AEDesc *theItem,
 300     void *info,
 301     void *callBackUD,
 302     NavFilterModes filterMode
 303 )
 304 {
 305     bool display = true;
 306     OpenUserDataRecPtr data = (OpenUserDataRecPtr) callBackUD ;
 307
 308     if (filterMode == kNavFilteringBrowserList)
 309     {
 310         NavFileOrFolderInfo* theInfo = (NavFileOrFolderInfo*) info ;
 311         if ( !theInfo->isFolder )
 312         {
 313             if (theItem->descriptorType == typeFSS )
 314             {
 315                 FSSpec    spec;
 316                 memcpy( &spec , *theItem->dataHandle , sizeof(FSSpec) ) ;
 317                 wxString file = wxMacMakeStringFromPascal( spec.name ) ;
 318                 display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
 319             }
 320  #if TARGET_CARBON
 321             else if ( theItem->descriptorType == typeFSRef )
 322             {
 323                 FSRef fsref ;
 324                 memcpy( &fsref , *theItem->dataHandle , sizeof(FSRef) ) ;
 325
 326
 327
 328                 CFURLRef fullURLRef;
 329                 fullURLRef = ::CFURLCreateFromFSRef(NULL, &fsref);
 330 #ifdef __UNIX__
 331                 CFURLPathStyle pathstyle = kCFURLPOSIXPathStyle;
 332 #else
 333                 CFURLPathStyle pathstyle = kCFURLHFSPathStyle;
 334 #endif
 335                 CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, pathstyle);
 336                 wxString file = wxMacCFStringHolder(cfString).AsString(wxFont::GetDefaultEncoding());
 337
 338                 display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
 339             }
 340 #endif
 341         }
 342     }
 343
 344     return display;
 345 }
 346
 347 int wxFileDialog::ShowModal()
 348 {
 349 #if TARGET_CARBON
 350     OSErr err;
 351     NavDialogCreationOptions dialogCreateOptions;
 352     // set default options
 353     ::NavGetDefaultDialogCreationOptions(&dialogCreateOptions);
 354
 355     // this was always unset in the old code
 356     dialogCreateOptions.optionFlags &= ~kNavSelectDefaultLocation;
 357
 358 #if wxUSE_UNICODE
 359     // tried using wxMacCFStringHolder in the code below, but it seems
 360     // the CFStrings were being released before the save dialog was called,
 361     // causing a crash - open dialog works fine with or without wxMacCFStringHolder
 362     CFStringRef titleRef = ::CFStringCreateWithCharacters( kCFAllocatorDefault,
 363                                 (const unsigned short*)m_message.wc_str(),
 364                                 m_message.Len() );
 365 #else
 366     CFStringRef titleRef = ::CFStringCreateWithCString(NULL,
 367                                                        m_message.c_str(),
 368                                                        m_font.GetEncoding() );
 369 #endif
 370     dialogCreateOptions.windowTitle = titleRef;
 371 #if wxUSE_UNICODE
 372     CFStringRef defaultFileNameRef = ::CFStringCreateWithCharacters( kCFAllocatorDefault,
 373                                         (const unsigned short*)m_fileName.wc_str(),
 374                                         m_fileName.Len() );
 375 #else
 376     CFStringRef defaultFileNameRef = ::CFStringCreateWithCString(NULL,
 377                                                                  m_fileName.c_str(),
 378                                                                  m_font.GetEncoding());
 379 #endif
 380     dialogCreateOptions.saveFileName = defaultFileNameRef;
 381     NavDialogRef dialog;
 382     NavObjectFilterUPP navFilterUPP = NULL;
 383     CFArrayRef cfArray = NULL; // for popupExtension
 384     OpenUserDataRec myData;
 385     myData.defaultLocation = m_dir;
 386
 387     if (m_dialogStyle & wxSAVE)
 388     {
 389         dialogCreateOptions.optionFlags |= kNavNoTypePopup;
 390         dialogCreateOptions.optionFlags |= kNavDontAutoTranslate;
 391         dialogCreateOptions.optionFlags |= kNavDontAddTranslateItems;
 392
 393         // The extension is important
 394         dialogCreateOptions.optionFlags |= kNavPreserveSaveFileExtension;
 395
 396         err = ::NavCreatePutFileDialog(&dialogCreateOptions,
 397                                        'TEXT',
 398                                        'TEXT',
 399                                        sStandardNavEventFilter,
 400                                        &myData, // for defaultLocation
 401                                        &dialog);
 402     }
 403     else
 404     {
 405         MakeUserDataRec(&myData , m_wildCard);
 406         size_t numfilters = myData.extensions.GetCount();
 407         if (numfilters > 0)
 408         {
 409             CFMutableArrayRef popup = CFArrayCreateMutable( kCFAllocatorDefault ,
 410                 numfilters , &kCFTypeArrayCallBacks ) ;
 411             dialogCreateOptions.popupExtension = popup ;
 412             myData.menuitems = dialogCreateOptions.popupExtension ;
 413             for ( size_t i = 0 ; i < numfilters ; ++i )
 414             {
 415                 CFArrayAppendValue( popup , (CFStringRef) wxMacCFStringHolder( myData.name[i] , m_font.GetEncoding() ) ) ;
 416             }
 417         }
 418
 419         navFilterUPP = NewNavObjectFilterUPP(CrossPlatformFilterCallback);
 420         err = ::NavCreateGetFileDialog(&dialogCreateOptions,
 421                                        NULL, // NavTypeListHandle
 422                                        sStandardNavEventFilter,
 423                                        NULL, // NavPreviewUPP
 424                                        navFilterUPP,
 425                                        (void *) &myData, // inClientData
 426                                        &dialog);
 427     }
 428
 429     if (err == noErr)
 430         err = ::NavDialogRun(dialog);
 431
 432     // clean up filter related data, etc.
 433     if (navFilterUPP)
 434         ::DisposeNavObjectFilterUPP(navFilterUPP);
 435     if (cfArray)
 436     {
 437         CFIndex n = ::CFArrayGetCount(cfArray);
 438         for (CFIndex i = 0; i < n; i++)
 439         {
 440             CFStringRef str = (CFStringRef) ::CFArrayGetValueAtIndex(cfArray, i);
 441             if (str)
 442                 ::CFRelease(str);
 443         }
 444         ::CFRelease(cfArray);
 445     }
 446     if (titleRef)
 447         ::CFRelease(titleRef);
 448     if (defaultFileNameRef)
 449         ::CFRelease(defaultFileNameRef);
 450     if (err != noErr)
 451         return wxID_CANCEL;
 452
 453     NavReplyRecord navReply;
 454     err = ::NavDialogGetReply(dialog, &navReply);
 455     if (err == noErr && navReply.validRecord)
 456     {
 457         AEKeyword   theKeyword;
 458         DescType    actualType;
 459         Size        actualSize;
 460         FSRef       theFSRef;
 461         wxString thePath ;
 462         long count;
 463         ::AECountItems(&navReply.selection , &count);
 464         for (long i = 1; i <= count; ++i)
 465         {
 466             err = ::AEGetNthPtr(&(navReply.selection), 1, typeFSRef, &theKeyword, &actualType,
 467                                 &theFSRef, sizeof(theFSRef), &actualSize);
 468             if (err != noErr)
 469                 break;
 470
 471             CFURLRef fullURLRef;
 472             if (m_dialogStyle & wxSAVE)
 473             {
 474                 CFURLRef parentURLRef = ::CFURLCreateFromFSRef(NULL, &theFSRef);
 475
 476                 if (parentURLRef)
 477                 {
 478                     fullURLRef =
 479                         ::CFURLCreateCopyAppendingPathComponent(NULL,
 480                                                                 parentURLRef,
 481                                                                 navReply.saveFileName,
 482                                                                 false);
 483                     ::CFRelease(parentURLRef);
 484                 }
 485             }
 486             else
 487             {
 488                 fullURLRef = ::CFURLCreateFromFSRef(NULL, &theFSRef);
 489             }
 490 #ifdef __UNIX__
 491             CFURLPathStyle pathstyle = kCFURLPOSIXPathStyle;
 492 #else
 493             CFURLPathStyle pathstyle = kCFURLHFSPathStyle;
 494 #endif
 495             CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, pathstyle);
 496             thePath = wxMacCFStringHolder(cfString).AsString(m_font.GetEncoding());
 497             if (!thePath)
 498             {
 499                 ::NavDisposeReply(&navReply);
 500                 return wxID_CANCEL;
 501             }
 502             m_path = thePath;
 503             m_paths.Add(m_path);
 504             m_fileName = wxFileNameFromPath(m_path);
 505             m_fileNames.Add(m_fileName);
 506         }
 507         // set these to the first hit
 508         m_path = m_paths[0];
 509         m_fileName = wxFileNameFromPath(m_path);
 510         m_dir = wxPathOnly(m_path);
 511     }
 512     ::NavDisposeReply(&navReply);
 513
 514     return (err == noErr) ? wxID_OK : wxID_CANCEL;
 515 #else // TARGET_CARBON
 516
 517     NavDialogOptions           mNavOptions;
 518     NavObjectFilterUPP           mNavFilterUPP = NULL;
 519     NavPreviewUPP           mNavPreviewUPP = NULL ;
 520     NavReplyRecord           mNavReply;
 521     AEDesc               mDefaultLocation ;
 522     bool               mSelectDefault = false ;
 523     OSStatus            err = noErr ;
 524     // setup dialog
 525
 526     mNavFilterUPP    = nil;
 527     mNavPreviewUPP    = nil;
 528     mSelectDefault    = false;
 529     mDefaultLocation.descriptorType = typeNull;
 530     mDefaultLocation.dataHandle     = nil;
 531
 532     NavGetDefaultDialogOptions(&mNavOptions);
 533     wxMacStringToPascal( m_message , (StringPtr)mNavOptions.message ) ;
 534     wxMacStringToPascal( m_fileName , (StringPtr)mNavOptions.savedFileName ) ;
 535
 536     // Set default location, the location
 537     //   that's displayed when the dialog
 538     //   first appears
 539
 540     FSSpec location ;
 541     wxMacFilename2FSSpec( m_dir , &location ) ;
 542
 543     err = ::AECreateDesc(typeFSS, &location, sizeof(FSSpec), &mDefaultLocation );
 544
 545     if ( mDefaultLocation.dataHandle )
 546     {
 547         if (mSelectDefault)
 548         {
 549             mNavOptions.dialogOptionFlags |= kNavSelectDefaultLocation;
 550         } else {
 551             mNavOptions.dialogOptionFlags &= ~kNavSelectDefaultLocation;
 552         }
 553     }
 554
 555     memset( &mNavReply , 0 , sizeof( mNavReply ) ) ;
 556     mNavReply.validRecord = false;
 557     mNavReply.replacing = false;
 558     mNavReply.isStationery = false;
 559     mNavReply.translationNeeded = false;
 560     mNavReply.selection.descriptorType = typeNull;
 561     mNavReply.selection.dataHandle = nil;
 562     mNavReply.keyScript = smSystemScript;
 563     mNavReply.fileTranslation = nil;
 564     mNavReply.version = kNavReplyRecordVersion ;
 565
 566     // zero all data
 567
 568     m_path = wxEmptyString ;
 569     m_fileName = wxEmptyString ;
 570     m_paths.Empty();
 571     m_fileNames.Empty();
 572
 573     OpenUserDataRec            myData;
 574     MakeUserDataRec( &myData , m_wildCard ) ;
 575     myData.currentfilter = m_filterIndex ;
 576     if ( myData.extensions.GetCount() > 0 )
 577     {
 578         mNavOptions.popupExtension = (NavMenuItemSpecArrayHandle) NewHandle( sizeof( NavMenuItemSpec ) * myData.extensions.GetCount() ) ;
 579         myData.menuitems = mNavOptions.popupExtension ;
 580         for ( size_t i = 0 ; i < myData.extensions.GetCount() ; ++i )
 581         {
 582             (*mNavOptions.popupExtension)[i].version     = kNavMenuItemSpecVersion ;
 583             (*mNavOptions.popupExtension)[i].menuCreator = 'WXNG' ;
 584             // TODO : according to the new docs  -1 to 10 are reserved for the OS
 585             (*mNavOptions.popupExtension)[i].menuType    = i ;
 586             wxMacStringToPascal( myData.name[i] , (StringPtr)(*mNavOptions.popupExtension)[i].menuItemName ) ;
 587         }
 588     }
 589     if ( m_dialogStyle & wxSAVE )
 590     {
 591         myData.saveMode = true ;
 592
 593         mNavOptions.dialogOptionFlags |= kNavDontAutoTranslate ;
 594         mNavOptions.dialogOptionFlags |= kNavDontAddTranslateItems ;
 595
 596         err = ::NavPutFile(
 597                            &mDefaultLocation,
 598                            &mNavReply,
 599                            &mNavOptions,
 600                            sStandardNavEventFilter ,
 601                            NULL,
 602                            kNavGenericSignature,
 603                            &myData);                    // User Data
 604         m_filterIndex = myData.currentfilter ;
 605     }
 606     else
 607     {
 608         myData.saveMode = false ;
 609
 610         mNavFilterUPP = NewNavObjectFilterUPP( CrossPlatformFilterCallback ) ;
 611         if ( m_dialogStyle & wxMULTIPLE )
 612             mNavOptions.dialogOptionFlags |= kNavAllowMultipleFiles ;
 613         else
 614             mNavOptions.dialogOptionFlags &= ~kNavAllowMultipleFiles ;
 615
 616         err = ::NavGetFile(
 617                            &mDefaultLocation,
 618                            &mNavReply,
 619                            &mNavOptions,
 620                            sStandardNavEventFilter ,
 621                            mNavPreviewUPP,
 622                            mNavFilterUPP,
 623                            NULL ,
 624                            &myData);
 625         m_filterIndex = myData.currentfilter ;
 626     }
 627
 628     DisposeNavObjectFilterUPP(mNavFilterUPP);
 629     if ( mDefaultLocation.dataHandle != nil )
 630     {
 631         ::AEDisposeDesc(&mDefaultLocation);
 632     }
 633
 634     if ( (err != noErr) && (err != userCanceledErr) ) {
 635         return wxID_CANCEL ;
 636     }
 637
 638     if (mNavReply.validRecord)
 639     {
 640         FSSpec  outFileSpec ;
 641         AEDesc specDesc ;
 642         AEKeyword keyWord ;
 643
 644         long count ;
 645         ::AECountItems( &mNavReply.selection , &count ) ;
 646         for ( long i = 1 ; i <= count ; ++i )
 647         {
 648             OSErr err = ::AEGetNthDesc( &mNavReply.selection , i , typeFSS, &keyWord , &specDesc);
 649             if ( err != noErr )
 650             {
 651                 m_path = wxT("") ;
 652                 return wxID_CANCEL ;
 653             }
 654             outFileSpec = **(FSSpec**) specDesc.dataHandle;
 655             if (specDesc.dataHandle != nil) {
 656                 ::AEDisposeDesc(&specDesc);
 657             }
 658             m_path = wxMacFSSpec2MacFilename( &outFileSpec ) ;
 659
 660             m_paths.Add( m_path ) ;
 661             m_fileName = wxFileNameFromPath(m_path);
 662             m_fileNames.Add(m_fileName);
 663         }
 664         // set these to the first hit
 665         m_path = m_paths[ 0 ] ;
 666         m_fileName = wxFileNameFromPath(m_path);
 667         m_dir = wxPathOnly(m_path);
 668         NavDisposeReply( &mNavReply ) ;
 669         return wxID_OK ;
 670     }
 671     return wxID_CANCEL;
 672 #endif // TARGET_CARBON
 673 }
 674