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
 109         NavMenuItemSpec  menuItem;
 110         menuItem.version = kNavMenuItemSpecVersion;
 111         menuItem.menuCreator = 'WXNG';
 112         menuItem.menuType = data->currentfilter;
 113         wxMacStringToPascal( data->name[data->currentfilter] , (StringPtr)(menuItem.menuItemName) ) ;
 114         ::NavCustomControl(ioParams->context, kNavCtlSelectCustomType, &menuItem);
 115
 116 #else
 117         if ( data->menuitems )
 118             NavCustomControl(ioParams->context, kNavCtlSelectCustomType, &(*data->menuitems)[data->currentfilter]);
 119 #endif
 120     }
 121     else if ( inSelector == kNavCBPopupMenuSelect )
 122     {
 123         NavMenuItemSpec * menu = (NavMenuItemSpec *) ioParams->eventData.eventDataParms.param ;
 124 #if TARGET_CARBON
 125         const size_t numFilters = data->extensions.GetCount();
 126
 127         if ( menu->menuType < numFilters )
 128 #else
 129         if ( menu->menuCreator == 'WXNG' )
 130 #endif
 131         {
 132             data->currentfilter = menu->menuType ;
 133             if ( data->saveMode )
 134             {
 135                 int i = menu->menuType ;
 136                 wxString extension =  data->extensions[i].AfterLast('.') ;
 137                 extension.MakeLower() ;
 138                 wxString sfilename ;
 139
 140 #if TARGET_CARBON
 141                 wxMacCFStringHolder cfString( NavDialogGetSaveFileName( ioParams->context ) , false  );
 142                 sfilename = cfString.AsString() ;
 143 #else
 144                 Str255 filename ;
 145                 // get the current filename
 146                 NavCustomControl(ioParams->context, kNavCtlGetEditFileName, &filename);
 147                 sfilename = wxMacMakeStringFromPascal( filename ) ;
 148 #endif
 149
 150                 int pos = sfilename.Find('.', true) ;
 151                 if ( pos != wxNOT_FOUND )
 152                 {
 153                     sfilename = sfilename.Left(pos+1)+extension ;
 154 #if TARGET_CARBON
 155                     cfString.Assign( sfilename , wxFONTENCODING_DEFAULT ) ;
 156                     NavDialogSetSaveFileName( ioParams->context , cfString ) ;
 157 #else
 158                     wxMacStringToPascal( sfilename , filename ) ;
 159                     NavCustomControl(ioParams->context, kNavCtlSetEditFileName, &filename);
 160 #endif
 161                 }
 162             }
 163         }
 164     }
 165 }
 166
 167
 168 void MakeUserDataRec(OpenUserDataRec    *myData , const wxString& filter )
 169 {
 170     myData->menuitems = NULL ;
 171     myData->currentfilter = 0 ;
 172     myData->saveMode = false ;
 173
 174     if ( filter && filter[0] )
 175     {
 176         wxString filter2(filter) ;
 177         int filterIndex = 0;
 178         bool isName = true ;
 179         wxString current ;
 180         for( unsigned int i = 0; i < filter2.Len() ; i++ )
 181         {
 182             if( filter2.GetChar(i) == wxT('|') )
 183             {
 184                 if( isName ) {
 185                     myData->name.Add( current ) ;
 186                 }
 187                 else {
 188                     myData->extensions.Add( current.MakeUpper() ) ;
 189                     ++filterIndex ;
 190                 }
 191                 isName = !isName ;
 192                 current = wxEmptyString ;
 193             }
 194             else
 195             {
 196                 current += filter2.GetChar(i) ;
 197             }
 198         }
 199         // we allow for compatibility reason to have a single filter expression (like *.*) without
 200         // an explanatory text, in that case the first part is name and extension at the same time
 201
 202         wxASSERT_MSG( filterIndex == 0 || !isName , wxT("incorrect format of format string") ) ;
 203         if ( current.IsEmpty() )
 204             myData->extensions.Add( myData->name[filterIndex] ) ;
 205         else
 206             myData->extensions.Add( current.MakeUpper() ) ;
 207         if ( filterIndex == 0 || isName )
 208             myData->name.Add( current.MakeUpper() ) ;
 209
 210         ++filterIndex ;
 211
 212         const size_t extCount = myData->extensions.GetCount();
 213         for ( size_t i = 0 ; i < extCount; i++ )
 214         {
 215             wxUint32 fileType;
 216             wxUint32 creator;
 217             wxString extension = myData->extensions[i];
 218
 219             if (extension.GetChar(0) == '*')
 220                 extension = extension.Mid(1);   // Remove leading *
 221
 222             if (extension.GetChar(0) == '.')
 223             {
 224                 extension = extension.Mid(1);   // Remove leading .
 225             }
 226
 227             if (wxFileName::MacFindDefaultTypeAndCreator( extension, &fileType, &creator ))
 228             {
 229                 myData->filtermactypes.Add( (OSType)fileType );
 230             }
 231             else
 232             {
 233                 myData->filtermactypes.Add( '****' ) ;          // We'll fail safe if it's not recognized
 234                 }
 235         }
 236     }
 237 }
 238
 239 static Boolean CheckFile( const wxString &filename , OSType type , OpenUserDataRecPtr data)
 240 {
 241     wxString file(filename) ;
 242     file.MakeUpper() ;
 243
 244     if ( data->extensions.GetCount() > 0 )
 245     {
 246         //for ( int i = 0 ; i < data->numfilters ; ++i )
 247         int i = data->currentfilter ;
 248         if ( data->extensions[i].Right(2) == wxT(".*") )
 249             return true ;
 250
 251         {
 252             if ( type == (OSType)data->filtermactypes[i] )
 253                 return true ;
 254
 255             wxStringTokenizer tokenizer( data->extensions[i] , wxT(";") ) ;
 256             while( tokenizer.HasMoreTokens() )
 257             {
 258                 wxString extension = tokenizer.GetNextToken() ;
 259                 if ( extension.GetChar(0) == '*' )
 260                     extension = extension.Mid(1) ;
 261
 262                 if ( file.Len() >= extension.Len() && extension == file.Right(extension.Len() ) )
 263                     return true ;
 264             }
 265         }
 266         return false ;
 267     }
 268     return true ;
 269 }
 270
 271 #ifndef __DARWIN__
 272 static pascal Boolean CrossPlatformFileFilter(CInfoPBPtr myCInfoPBPtr, void *dataPtr)
 273 {
 274     OpenUserDataRecPtr data = (OpenUserDataRecPtr) dataPtr ;
 275     // return true if this item is invisible or a file
 276
 277     Boolean visibleFlag;
 278     Boolean folderFlag;
 279
 280     visibleFlag = ! (myCInfoPBPtr->hFileInfo.ioFlFndrInfo.fdFlags & kIsInvisible);
 281     folderFlag = (myCInfoPBPtr->hFileInfo.ioFlAttrib & 0x10);
 282
 283     // because the semantics of the filter proc are "true means don't show
 284     // it" we need to invert the result that we return
 285
 286     if ( !visibleFlag )
 287         return true ;
 288
 289     if ( !folderFlag )
 290     {
 291         wxString file = wxMacMakeStringFromPascal( myCInfoPBPtr->hFileInfo.ioNamePtr ) ;
 292         return !CheckFile( file , myCInfoPBPtr->hFileInfo.ioFlFndrInfo.fdType , data ) ;
 293     }
 294
 295     return false ;
 296 }
 297 #endif
 298
 299 // end wxmac
 300
 301 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 302         const wxString& defaultDir, const wxString& defaultFileName, const wxString& wildCard,
 303         long style, const wxPoint& pos)
 304              :wxFileDialogBase(parent, message, defaultDir, defaultFileName, wildCard, style, pos)
 305 {
 306     wxASSERT_MSG( NavServicesAvailable() , wxT("Navigation Services are not running") ) ;
 307 }
 308
 309 pascal Boolean CrossPlatformFilterCallback (
 310     AEDesc *theItem,
 311     void *info,
 312     void *callBackUD,
 313     NavFilterModes filterMode
 314 )
 315 {
 316     bool display = true;
 317     OpenUserDataRecPtr data = (OpenUserDataRecPtr) callBackUD ;
 318
 319     if (filterMode == kNavFilteringBrowserList)
 320     {
 321         NavFileOrFolderInfo* theInfo = (NavFileOrFolderInfo*) info ;
 322         if ( !theInfo->isFolder )
 323         {
 324             if (theItem->descriptorType == typeFSS )
 325             {
 326                 FSSpec    spec;
 327                 memcpy( &spec , *theItem->dataHandle , sizeof(FSSpec) ) ;
 328                 wxString file = wxMacMakeStringFromPascal( spec.name ) ;
 329                 display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
 330             }
 331  #if TARGET_CARBON
 332             else if ( theItem->descriptorType == typeFSRef )
 333             {
 334                 FSRef fsref ;
 335                 memcpy( &fsref , *theItem->dataHandle , sizeof(FSRef) ) ;
 336
 337
 338
 339                 CFURLRef fullURLRef;
 340                 fullURLRef = ::CFURLCreateFromFSRef(NULL, &fsref);
 341 #ifdef __UNIX__
 342                 CFURLPathStyle pathstyle = kCFURLPOSIXPathStyle;
 343 #else
 344                 CFURLPathStyle pathstyle = kCFURLHFSPathStyle;
 345 #endif
 346                 CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, pathstyle);
 347                 ::CFRelease( fullURLRef ) ;
 348                 wxString file = wxMacCFStringHolder(cfString).AsString(wxFont::GetDefaultEncoding());
 349
 350                 display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
 351             }
 352 #endif
 353         }
 354     }
 355
 356     return display;
 357 }
 358
 359 int wxFileDialog::ShowModal()
 360 {
 361 #if TARGET_CARBON
 362     OSErr err;
 363     NavDialogCreationOptions dialogCreateOptions;
 364     // set default options
 365     ::NavGetDefaultDialogCreationOptions(&dialogCreateOptions);
 366
 367     // this was always unset in the old code
 368     dialogCreateOptions.optionFlags &= ~kNavSelectDefaultLocation;
 369
 370     wxMacCFStringHolder message(m_message, m_font.GetEncoding());
 371     dialogCreateOptions.windowTitle = message;
 372
 373     wxMacCFStringHolder defaultFileName(m_fileName, m_font.GetEncoding());
 374     dialogCreateOptions.saveFileName = defaultFileName;
 375
 376
 377     NavDialogRef dialog;
 378     NavObjectFilterUPP navFilterUPP = NULL;
 379     CFArrayRef cfArray = NULL; // for popupExtension
 380     OpenUserDataRec myData;
 381     myData.defaultLocation = m_dir;
 382
 383     MakeUserDataRec(&myData , m_wildCard);
 384     myData.currentfilter = m_filterIndex;
 385     size_t numFilters = myData.extensions.GetCount();
 386     if (numFilters)
 387     {
 388         CFMutableArrayRef popup = CFArrayCreateMutable( kCFAllocatorDefault ,
 389             numFilters , &kCFTypeArrayCallBacks ) ;
 390         dialogCreateOptions.popupExtension = popup ;
 391         myData.menuitems = dialogCreateOptions.popupExtension ;
 392         for ( size_t i = 0 ; i < numFilters ; ++i )
 393         {
 394             CFArrayAppendValue( popup , (CFStringRef) wxMacCFStringHolder( myData.name[i] , m_font.GetEncoding() ) ) ;
 395         }
 396     }
 397
 398     if (m_dialogStyle & wxSAVE)
 399     {
 400         myData.saveMode = true;
 401
 402         if (!numFilters)
 403         {
 404             dialogCreateOptions.optionFlags |= kNavNoTypePopup;
 405         }
 406         dialogCreateOptions.optionFlags |= kNavDontAutoTranslate;
 407         dialogCreateOptions.optionFlags |= kNavDontAddTranslateItems;
 408
 409         // The extension is important
 410         if (numFilters < 2)
 411             dialogCreateOptions.optionFlags |= kNavPreserveSaveFileExtension;
 412
 413 #if TARGET_API_MAC_OSX
 414         if (!(m_dialogStyle & wxOVERWRITE_PROMPT))
 415         {
 416                 dialogCreateOptions.optionFlags |= kNavDontConfirmReplacement;
 417         }
 418 #endif
 419         err = ::NavCreatePutFileDialog(&dialogCreateOptions,
 420                                        // Suppresses the 'Default' (top) menu item
 421                                        kNavGenericSignature, kNavGenericSignature,
 422                                        sStandardNavEventFilter,
 423                                        &myData, // for defaultLocation
 424                                        &dialog);
 425     }
 426     else
 427     {
 428
 429         //let people select bundles/programs in dialogs
 430         dialogCreateOptions.optionFlags |= kNavSupportPackages;
 431
 432         navFilterUPP = NewNavObjectFilterUPP(CrossPlatformFilterCallback);
 433         err = ::NavCreateGetFileDialog(&dialogCreateOptions,
 434                                        NULL, // NavTypeListHandle
 435                                        sStandardNavEventFilter,
 436                                        NULL, // NavPreviewUPP
 437                                        navFilterUPP,
 438                                        (void *) &myData, // inClientData
 439                                        &dialog);
 440     }
 441
 442     if (err == noErr)
 443         err = ::NavDialogRun(dialog);
 444
 445     // clean up filter related data, etc.
 446     if (navFilterUPP)
 447         ::DisposeNavObjectFilterUPP(navFilterUPP);
 448     if (cfArray)
 449         ::CFRelease(cfArray);
 450
 451     if (err != noErr)
 452         return wxID_CANCEL;
 453
 454     NavReplyRecord navReply;
 455     err = ::NavDialogGetReply(dialog, &navReply);
 456     if (err == noErr && navReply.validRecord)
 457     {
 458         AEKeyword   theKeyword;
 459         DescType    actualType;
 460         Size        actualSize;
 461         FSRef       theFSRef;
 462         wxString thePath ;
 463
 464         m_filterIndex = myData.currentfilter ;
 465
 466         long count;
 467         ::AECountItems(&navReply.selection , &count);
 468         for (long i = 1; i <= count; ++i)
 469         {
 470             err = ::AEGetNthPtr(&(navReply.selection), i, typeFSRef, &theKeyword, &actualType,
 471                                 &theFSRef, sizeof(theFSRef), &actualSize);
 472             if (err != noErr)
 473                 break;
 474
 475             CFURLRef fullURLRef = 0 ;
 476             if (m_dialogStyle & wxSAVE)
 477             {
 478                 CFURLRef parentURLRef = ::CFURLCreateFromFSRef(NULL, &theFSRef);
 479
 480                 if (parentURLRef)
 481                 {
 482                     fullURLRef =
 483                         ::CFURLCreateCopyAppendingPathComponent(NULL,
 484                                                                 parentURLRef,
 485                                                                 navReply.saveFileName,
 486                                                                 false);
 487                     ::CFRelease(parentURLRef);
 488                 }
 489             }
 490             else
 491             {
 492                 fullURLRef = ::CFURLCreateFromFSRef(NULL, &theFSRef);
 493             }
 494 #ifdef __UNIX__
 495             CFURLPathStyle pathstyle = kCFURLPOSIXPathStyle;
 496 #else
 497             CFURLPathStyle pathstyle = kCFURLHFSPathStyle;
 498 #endif
 499             CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, pathstyle);
 500             thePath = wxMacCFStringHolder(cfString).AsString(m_font.GetEncoding());
 501             if (!thePath)
 502             {
 503                 ::NavDisposeReply(&navReply);
 504                 return wxID_CANCEL;
 505             }
 506             m_path = thePath;
 507             m_paths.Add(m_path);
 508             m_fileName = wxFileNameFromPath(m_path);
 509             m_fileNames.Add(m_fileName);
 510         }
 511         // set these to the first hit
 512         m_path = m_paths[0];
 513         m_fileName = wxFileNameFromPath(m_path);
 514         m_dir = wxPathOnly(m_path);
 515     }
 516     ::NavDisposeReply(&navReply);
 517
 518     return (err == noErr) ? wxID_OK : wxID_CANCEL;
 519 #else // TARGET_CARBON
 520
 521     NavDialogOptions           mNavOptions;
 522     NavObjectFilterUPP           mNavFilterUPP = NULL;
 523     NavPreviewUPP           mNavPreviewUPP = NULL ;
 524     NavReplyRecord           mNavReply;
 525     AEDesc               mDefaultLocation ;
 526     bool               mSelectDefault = false ;
 527     OSStatus            err = noErr ;
 528     // setup dialog
 529
 530     mNavFilterUPP    = nil;
 531     mNavPreviewUPP    = nil;
 532     mSelectDefault    = false;
 533     mDefaultLocation.descriptorType = typeNull;
 534     mDefaultLocation.dataHandle     = nil;
 535
 536     NavGetDefaultDialogOptions(&mNavOptions);
 537     wxMacStringToPascal( m_message , (StringPtr)mNavOptions.message ) ;
 538     wxMacStringToPascal( m_fileName , (StringPtr)mNavOptions.savedFileName ) ;
 539
 540     // Set default location, the location
 541     //   that's displayed when the dialog
 542     //   first appears
 543
 544     FSSpec location ;
 545     wxMacFilename2FSSpec( m_dir , &location ) ;
 546
 547     err = ::AECreateDesc(typeFSS, &location, sizeof(FSSpec), &mDefaultLocation );
 548
 549     if ( mDefaultLocation.dataHandle )
 550     {
 551         if (mSelectDefault)
 552         {
 553             mNavOptions.dialogOptionFlags |= kNavSelectDefaultLocation;
 554         } else {
 555             mNavOptions.dialogOptionFlags &= ~kNavSelectDefaultLocation;
 556         }
 557     }
 558
 559     memset( &mNavReply , 0 , sizeof( mNavReply ) ) ;
 560     mNavReply.validRecord = false;
 561     mNavReply.replacing = false;
 562     mNavReply.isStationery = false;
 563     mNavReply.translationNeeded = false;
 564     mNavReply.selection.descriptorType = typeNull;
 565     mNavReply.selection.dataHandle = nil;
 566     mNavReply.keyScript = smSystemScript;
 567     mNavReply.fileTranslation = nil;
 568     mNavReply.version = kNavReplyRecordVersion ;
 569
 570     // zero all data
 571
 572     m_path = wxEmptyString ;
 573     m_fileName = wxEmptyString ;
 574     m_paths.Empty();
 575     m_fileNames.Empty();
 576
 577     OpenUserDataRec            myData;
 578     MakeUserDataRec( &myData , m_wildCard ) ;
 579     myData.currentfilter = m_filterIndex ;
 580     if ( myData.extensions.GetCount() > 0 )
 581     {
 582         mNavOptions.popupExtension = (NavMenuItemSpecArrayHandle) NewHandle( sizeof( NavMenuItemSpec ) * myData.extensions.GetCount() ) ;
 583         myData.menuitems = mNavOptions.popupExtension ;
 584         for ( size_t i = 0 ; i < myData.extensions.GetCount() ; ++i )
 585         {
 586             (*mNavOptions.popupExtension)[i].version     = kNavMenuItemSpecVersion ;
 587             (*mNavOptions.popupExtension)[i].menuCreator = 'WXNG' ;
 588             // TODO : according to the new docs  -1 to 10 are reserved for the OS
 589             (*mNavOptions.popupExtension)[i].menuType    = i ;
 590             wxMacStringToPascal( myData.name[i] , (StringPtr)(*mNavOptions.popupExtension)[i].menuItemName ) ;
 591         }
 592     }
 593     if ( m_dialogStyle & wxSAVE )
 594     {
 595         myData.saveMode = true ;
 596
 597         mNavOptions.dialogOptionFlags |= kNavDontAutoTranslate ;
 598         mNavOptions.dialogOptionFlags |= kNavDontAddTranslateItems ;
 599
 600         err = ::NavPutFile(
 601                            &mDefaultLocation,
 602                            &mNavReply,
 603                            &mNavOptions,
 604                            sStandardNavEventFilter ,
 605                            NULL,
 606                            kNavGenericSignature,
 607                            &myData);                    // User Data
 608         m_filterIndex = myData.currentfilter ;
 609     }
 610     else
 611     {
 612         myData.saveMode = false ;
 613
 614         mNavFilterUPP = NewNavObjectFilterUPP( CrossPlatformFilterCallback ) ;
 615         if ( m_dialogStyle & wxMULTIPLE )
 616             mNavOptions.dialogOptionFlags |= kNavAllowMultipleFiles ;
 617         else
 618             mNavOptions.dialogOptionFlags &= ~kNavAllowMultipleFiles ;
 619
 620         err = ::NavGetFile(
 621                            &mDefaultLocation,
 622                            &mNavReply,
 623                            &mNavOptions,
 624                            sStandardNavEventFilter ,
 625                            mNavPreviewUPP,
 626                            mNavFilterUPP,
 627                            NULL ,
 628                            &myData);
 629         m_filterIndex = myData.currentfilter ;
 630     }
 631
 632     DisposeNavObjectFilterUPP(mNavFilterUPP);
 633     if ( mDefaultLocation.dataHandle != nil )
 634     {
 635         ::AEDisposeDesc(&mDefaultLocation);
 636     }
 637
 638     if ( (err != noErr) && (err != userCanceledErr) ) {
 639         return wxID_CANCEL ;
 640     }
 641
 642     if (mNavReply.validRecord)
 643     {
 644         FSSpec  outFileSpec ;
 645         AEDesc specDesc ;
 646         AEKeyword keyWord ;
 647
 648         long count ;
 649         ::AECountItems( &mNavReply.selection , &count ) ;
 650         for ( long i = 1 ; i <= count ; ++i )
 651         {
 652             OSErr err = ::AEGetNthDesc( &mNavReply.selection , i , typeFSS, &keyWord , &specDesc);
 653             if ( err != noErr )
 654             {
 655                 m_path = wxT("") ;
 656                 return wxID_CANCEL ;
 657             }
 658             outFileSpec = **(FSSpec**) specDesc.dataHandle;
 659             if (specDesc.dataHandle != nil) {
 660                 ::AEDisposeDesc(&specDesc);
 661             }
 662             m_path = wxMacFSSpec2MacFilename( &outFileSpec ) ;
 663
 664             m_paths.Add( m_path ) ;
 665             m_fileName = wxFileNameFromPath(m_path);
 666             m_fileNames.Add(m_fileName);
 667         }
 668         // set these to the first hit
 669         m_path = m_paths[ 0 ] ;
 670         m_fileName = wxFileNameFromPath(m_path);
 671         m_dir = wxPathOnly(m_path);
 672         NavDisposeReply( &mNavReply ) ;
 673         return wxID_OK ;
 674     }
 675     return wxID_CANCEL;
 676 #endif // TARGET_CARBON
 677 }
 678