filedlg.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

                FSRef fsref ;
                memcpy( &fsref , *theItem->dataHandle , sizeof(FSRef) ) ;



                CFURLRef fullURLRef;
                fullURLRef = ::CFURLCreateFromFSRef(NULL, &fsref);
#ifdef __UNIX__
                CFURLPathStyle pathstyle = kCFURLPOSIXPathStyle;
#else
                CFURLPathStyle pathstyle = kCFURLHFSPathStyle;
#endif
                CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, pathstyle);
                ::CFRelease( fullURLRef ) ;
                wxString file = wxMacCFStringHolder(cfString).AsString(wxFont::GetDefaultEncoding());

                display = CheckFile( file , theInfo->fileAndFolder.fileInfo.finderInfo.fdType , data ) ;
            }
#endif
        }
    }

    return display;
}

int wxFileDialog::ShowModal()
{
#if TARGET_CARBON
    OSErr err;
    NavDialogCreationOptions dialogCreateOptions;
    // set default options
    ::NavGetDefaultDialogCreationOptions(&dialogCreateOptions);

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

    wxMacCFStringHolder message(m_message, m_font.GetEncoding());
    dialogCreateOptions.windowTitle = message;

    wxMacCFStringHolder defaultFileName(m_fileName, m_font.GetEncoding());
    dialogCreateOptions.saveFileName = defaultFileName;


    NavDialogRef dialog;
    NavObjectFilterUPP navFilterUPP = NULL;
    CFArrayRef cfArray = NULL; // for popupExtension
    OpenUserDataRec myData;
    myData.defaultLocation = m_dir;

    if (HasFlag(wxFD_SAVE))
    {
        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] , m_font.GetEncoding() ) ) ;
            }
        }

        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)
        ::CFRelease(cfArray);

    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), i, typeFSRef, &theKeyword, &actualType,
                                &theFSRef, sizeof(theFSRef), &actualSize);
            if (err != noErr)
                break;

            CFURLRef fullURLRef;
            if (HasFlag(wxFD_SAVE))
            {
                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(m_font.GetEncoding());
            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 ( HasFlag(wxFD_SAVE) )
    {
        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_windowStyle & wxFD_MULTIPLE )
            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 = wxEmptyString ;
                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
}