/*

     File: Asset.m

 Abstract: Asset Model Class for CocoaSlides

  Version: 1.5

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 be used to endorse or promote products derived from the Apple Software

 without specific prior written permission from Apple.  Except as

 expressly stated in this notice, no other rights or licenses, express or

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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

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 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

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 */

#import "Asset.h"

@implementation Asset

+ (NSArray *)fileTypes {

    // Subclasses should override this.

    return nil;

}

- (id)initWithURL:(NSURL *)newURL {

    self = [super init];

    if (self) {

        [self setURL:newURL];

    }

    return self;

}

- (void)dealloc {

    [previewImage release];

    [dateLastUpdated release];

    [url release];

    [super dealloc];

}

- (NSURL *)url {

    return url;

}

- (void)setURL:(NSURL *)newURL {

    [url autorelease];

    url = [newURL copy];

}

- (NSString *)filename {

    return [[[[[self url] path] lastPathComponent] copy] autorelease];

}

- (NSString *)localizedTypeDescription {

    NSError *error;

    NSWorkspace *workspace = [NSWorkspace sharedWorkspace];

    NSString *type = [workspace typeOfFile:[[self url] path] error:&error];

    return type ? [workspace localizedDescriptionForType:type] : @"(Unrecognized file type)";

}

- (NSDate *)dateLastUpdated {

    return dateLastUpdated;

}

- (void)setDateLastUpdated:(NSDate *)newDate {

    id old = dateLastUpdated;

    dateLastUpdated = [newDate copy];

    [old release];

}

- (unsigned long long)fileSize {

    if (fileSize == 0) {

        NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[[self url] path] error:nil];

        fileSize = [[attributes objectForKey:NSFileSize] unsignedLongLongValue];

    }

    return fileSize;

}

- (void)setFileSize:(unsigned long long)newFileSize {

    fileSize = newFileSize;

}

- (NSImage *)previewImage {

    return previewImage;

}

- (void)setPreviewImage:(NSImage *)newPreviewImage {

    if (previewImage != newPreviewImage) {

        [previewImage autorelease];

        previewImage = [newPreviewImage retain];

    }

}

- (BOOL)includedInSlideshow {

    return includedInSlideshow;

}

- (void)setIncludedInSlideshow:(BOOL)flag {

    includedInSlideshow = flag;

}

- (BOOL)loadMetadata {

    // Subclasses should override this.

    return NO;

}

- (BOOL)loadPreviewImage {

    // Subclasses should override this.

    return NO;

}

- (void)loadPreviewImageInBackgroundThread:(id)unusedObject {

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    [self loadPreviewImage];

    [pool release];

}

- (void)requestPreviewImage {

    if (previewImage == nil) {

        [NSThread detachNewThreadSelector:@selector(loadPreviewImageInBackgroundThread:) toTarget:self withObject:nil];

    }

}

@end