/*

    File:       MovieDocument.mm

    Abstract:   The NSDocument sublass for a Movie document. Overrides

                the methods involving document reading, writing.

    Version:    2.0

                Originally introduced at WWDC 2004 at Session 214:

                "Programming QuickTime with Cocoa." 

                Secondarily simplified and reintroducted at WWDC 2008 at Session:

                Extending and Integrating Post-Production Applications with Final Cut Pro

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Inc. ("Apple")

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                terms, please do not use, install, modify or redistribute this Apple

                software.

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                "Apple Software" ), to use, reproduce, modify and redistribute the Apple

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                provided that if you redistribute the Apple Software in its entirety and

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                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON - INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A

                PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION

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    Copyright © 2006-2008 Apple Inc. All Rights Reserved.

*/

#import "MovieDocument.h"

@implementation MovieDocument

#pragma mark

#pragma mark ---- Class method ----

+ (id)movieDocumentWithMovie:(QTMovie *)movie

{

    return [[(MovieDocument *)[self alloc] initWithMovie:movie] autorelease];

}

#pragma mark

#pragma mark ---- Init / Dealloc ----

- (id)init

{

    self = [super init];

    if (self) 

    {   // init

        [self setFileType:@"MovieDocument"];

    }

    return self;

}

- (id)initWithMovie:(QTMovie *)movie

{

    self = [self init];

    if (self) 

    {

        [self setMovie:movie];

        if (mMovie == nil)

        {

            [self release];

            self = nil;

        }

    }

    return self;

}

- (void)dealloc

{   

    [self setMovie:nil];

    [super dealloc];

}

#pragma mark

#pragma mark ---- Getters ----

- (QTMovie *)movie

{

    return mMovie;

}

#pragma mark

#pragma mark ---- Setters ----

- (void) setMovie:(QTMovie *)movie

{

    [movie retain];

    [mMovie release];

    mMovie = movie;

}

#pragma mark

#pragma mark ---- NSDocument overrides ----

- (void)windowControllerDidLoadNib:(NSWindowController *)windowController

{

    // set the editable state

    [mMovie setAttribute:[NSNumber numberWithBool:YES] forKey:QTMovieEditableAttribute];

}

- (BOOL)writeWithBackupToFile:(NSString *)fullDocumentPath ofType:(NSString *)type saveOperation:(NSSaveOperationType)saveOperation

{

    BOOL success = NO;

    // update/save

    if (saveOperation == NSSaveOperation)

    {

        success = [mMovie updateMovieFile];

    }

    else

    {

        NSError *error = nil;

        success = [super writeSafelyToURL:[NSURL URLWithString:fullDocumentPath] ofType:type forSaveOperation:saveOperation error:&error];

        if (!success && error != nil)

            NSLog(@"error writing out file: %@",[error localizedDescription]);

    }

    return success;

}

- (NSData *)dataRepresentationOfType:(NSString *)docType

{

    return [mMovie movieFormatRepresentation];

}

- (BOOL)readFromFile:(NSString *)fileName ofType:(NSString *)type

{

    BOOL    success = NO;

    // read the movie

    if ([QTMovie canInitWithFile:fileName])

    {

        [self setMovie:((QTMovie *)[QTMovie movieWithFile:fileName error:nil])];

        success = (mMovie != nil);

    }

    return success;

}

- (id)openDocumentWithContentsOfFile:(NSURL *)fileURL display:(BOOL)displayFlag

{

    NSDocumentController *sharedDocController = [NSDocumentController sharedDocumentController];

    MovieDocument *movieDocument = [sharedDocController documentForURL:fileURL];

    // first check whether we already have a document for this file

    if (movieDocument)

    {   // we've got one, just bring it forward

        if (displayFlag)

        {

            [movieDocument showWindows];

        }

    }

    else 

    {   // we must create a new document.

        // we always create a movie document regardless of type

        // init

        NSError *error = nil;

        movieDocument = [[[MovieDocument allocWithZone:[self zone]] initWithContentsOfURL:fileURL ofType:@"mov" error:&error] autorelease];

        // set up the document

        if (movieDocument)

        {

            // add the document

            [sharedDocController addDocument:movieDocument];

            // set up the document

            [movieDocument makeWindowControllers];

            if (displayFlag)

            {

                [movieDocument showWindows];

            }

        } else if (error != nil){

            NSLog(@"error opening document:%@", [error localizedDescription]);

        }

    }

    return movieDocument;

}

- (void)openDocument:(id)sender {

    NSOpenPanel *openPanel = [NSOpenPanel openPanel];

    [openPanel setDelegate:self];

    [openPanel setAllowsMultipleSelection:NO];

    // files are filtered through the panel:shouldShowFilename: method above

    if ([openPanel runModalForTypes:nil] == NSOKButton) 

    {

        [self openDocumentWithContentsOfFile:[[openPanel URLs] lastObject] display:YES];

    }

}

- (BOOL)readFromURL:(NSURL *)url ofType:(NSString *)type

{

    BOOL    success = NO;

    // read the movie

    if ([QTMovie canInitWithURL:url])

    {

        [self setMovie:((QTMovie *)[QTMovie movieWithURL:url error:nil])];

        success = (mMovie != nil);

    }

    return success;

}

@end