/*

File: NavServicesHandling.c

Abstract: Code to handle the save dialog for our sample application.

Version: 1.0

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*/

#include "MyCarbonPrinting.h"

#include "NavServicesHandling.h"

#include "AppDrawing.h"

#include "UIHandling.h"

#define kFileCreator            'prvw'

#define kFileTypePDF            'PDF '

#define kFileTypePS             'PS  '

#define kFileTypePDFCFStr       CFSTR("%@.pdf")     // our format string for making the save as file name

#define kFileTypePSCFStr        CFSTR("%@.ps")      // our format string for making the save as file name

// these are values are used to keep "unique" set of preferences for each Nav dialog,

// for example: using more than one NavChooseObject style dialog in one application:

#define kSavePrefKey            1

/****  Typedefs ********/

// the structure we're going to give to the save dialog to hang our data off of

typedef struct OurSaveDialogData {  

    NavDialogRef    dialogRef;

    WindowRef       parentWindow;

    void        *documentDataP;

    Boolean     doPostScript;

} OurSaveDialogData;

/**** Prototypes ****/

static OSStatus DoFSRefSave(const OurSaveDialogData *dialogDataP, NavReplyRecord* reply, AEDesc *actualDescP);

static void NavEventProc( NavEventCallbackMessage callBackSelector, NavCBRecPtr callBackParms, void* callBackUD );

// this code originates from the NavServices sample code in the CarbonLib SDK

OSStatus DoSaveAsFile(WindowRef w, void *ourDataP, Boolean doPostScript)

{

    OSStatus            err = noErr;

    NavDialogCreationOptions    dialogOptions;

    static NavEventUPP  gNavEventProc = NULL;

    // event proc for our Nav Dialogs 

    if( !gNavEventProc)

        gNavEventProc = NewNavEventUPP(NavEventProc);

    if(!err && (( err = NavGetDefaultDialogCreationOptions( &dialogOptions )) == noErr )) {

        OurSaveDialogData *dialogDataP = NULL;

        CFStringRef tempString;

        CopyWindowTitleAsCFString(w, &tempString);

        if(doPostScript) {

            dialogOptions.saveFileName = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, kFileTypePSCFStr, tempString);

        } else {

            dialogOptions.saveFileName = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, kFileTypePDFCFStr, tempString);

        }

        CFRelease(tempString);

        // make the dialog modal to our parent doc, AKA sheets

        dialogOptions.parentWindow = w;

        dialogOptions.modality = kWindowModalityWindowModal;

        dialogDataP = (OurSaveDialogData *)malloc(sizeof(OurSaveDialogData));

        if(dialogDataP) {

            OSType fileType = doPostScript ? kFileTypePS : kFileTypePDF;

            dialogDataP->dialogRef = NULL;

            dialogDataP->parentWindow = w;

            dialogDataP->documentDataP = ourDataP;

            dialogDataP->doPostScript = doPostScript;

            err = NavCreatePutFileDialog(&dialogOptions, fileType, kFileCreator,

                                gNavEventProc, dialogDataP,

                                &dialogDataP->dialogRef);

            if (!err && dialogDataP->dialogRef != NULL) {

                err = NavDialogRun( dialogDataP->dialogRef );

                if (err != noErr) {

                    NavDialogDispose( dialogDataP->dialogRef );

                    dialogDataP->dialogRef = NULL;

                    free(dialogDataP);

                }

            }

        } else {

            err = memFullErr;

        }

        if ( dialogOptions.saveFileName != NULL )

            CFRelease( dialogOptions.saveFileName );

    }

    return err;

}

static void NavEventProc( NavEventCallbackMessage callBackSelector, NavCBRecPtr callBackParms, void* callBackUD )

{

    OurSaveDialogData *dialogDataP = (OurSaveDialogData*)callBackUD;

    OSStatus    err = noErr;                

    switch( callBackSelector )

    {

        case kNavCBUserAction:

        {

            NavReplyRecord  reply;

            NavUserAction   userAction = 0;

            err = NavDialogGetReply( callBackParms->context, &reply );

            if (!err) {

                OSStatus tempErr;

                userAction = NavDialogGetUserAction( callBackParms->context );

                if(userAction == kNavUserActionSaveAs) {

                    if ( dialogDataP != NULL ) {

                        AEDesc  actualDesc;

                        err = AECoerceDesc( &reply.selection, typeFSRef, &actualDesc );

                        if (!err) { 

                            // the coercion succeeded as an FSRef, 

                            // so use HFS+ APIs to save the file:

                            err = DoFSRefSave( dialogDataP, &reply, &actualDesc);

                            AEDisposeDesc( &actualDesc );

                        }

                    }

                }

                tempErr = NavDisposeReply( &reply );

                if(!err)

                    err = tempErr;

            }

        }

        break;

        case kNavCBTerminate:

        {

            if( dialogDataP ) {

                if(dialogDataP->dialogRef)

                    NavDialogDispose( dialogDataP->dialogRef );

                dialogDataP->dialogRef = NULL;

                free(dialogDataP);

            }

        }

        break;

    }

}

static OSStatus DoFSRefSave(const OurSaveDialogData *dialogDataP, NavReplyRecord* reply, AEDesc *actualDescP)

{

    OSStatus    err = noErr;

    FSRef       fileRefParent;

    err = AEGetDescData( actualDescP, &fileRefParent, sizeof( FSRef ) );

    if ( !err ) {

        // get the name data and its length:    

        HFSUniStr255    nameBuffer;

        err = FSGetHFSUniStrFromString( reply->saveFileName, &nameBuffer );

        if ( !err )

        {   

            if ( reply->replacing )

            {

                // delete the file we are replacing:

                FSRef fileToDelete;

                err = FSMakeFSRefUnicode( &fileRefParent, nameBuffer.length, nameBuffer.unicode, kTextEncodingUnicodeDefault, &fileToDelete );

                if ( !err )

                {

                    err = FSDeleteObject( &fileToDelete );

                    if ( err == fBsyErr ) {

                        DoErrorAlert(fBsyErr, kMyDeleteErrorFormatStrKey);

                    }

                }

            }

            if ( !err ) {

                FSRef fsRef;

                FSCatalogInfo catInfo;

                FInfo *fileInfoP = (FInfo*)&catInfo.finderInfo;

                fileInfoP->fdType = dialogDataP->doPostScript ? kFileTypePS : kFileTypePDF;

                fileInfoP->fdCreator = kFileCreator;

                fileInfoP->fdFlags = 0;

                fileInfoP->fdLocation.h = 0;

                fileInfoP->fdLocation.v = 0;

                err = FSCreateFileUnicode( &fileRefParent, nameBuffer.length, nameBuffer.unicode, kFSCatInfoFinderInfo, &catInfo, &fsRef, NULL);

                if ( !err) {

                    CFURLRef saveURL = CFURLCreateFromFSRef(NULL, &fsRef);

                    if(saveURL) {

                        err = MakePDForPSDocument(dialogDataP->parentWindow, dialogDataP->documentDataP, saveURL, dialogDataP->doPostScript);

                        if(!err)

                            err = NavCompleteSave( reply, kNavTranslateInPlace );

                        if(err) {

                            // An error ocurred saving the file, so delete the copy left over.

                            FSDeleteObject( &fsRef );

                            DoErrorAlert(err, kMyWriteErrorFormatStrKey);

                        }

                        CFRelease(saveURL);

                    }

                }

            }

        }

    }

    return err;

}