Synnefo » Pithos MacOS Client

//

//  LastModifiedDateTransformer.m

//  pithos-macos

//

// Copyright 2011 GRNET S.A. All rights reserved.

//

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

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// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

#import "LastModifiedDateTransformer.h"

@implementation LastModifiedDateTransformer

+ (Class)transformedValueClass {

	return [NSString class];

}

+ (BOOL)allowsReverseTransformation {

	return NO;

}

- (id)transformedValue:(id)value {

    if (value == nil)

		return nil;

    NSCalendar *calendar = [NSCalendar currentCalendar];

    NSDateComponents *comps = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate:[NSDate date]];

    [comps setHour:23];

    [comps setMinute:59];

    [comps setSecond:59];    

    NSTimeInterval timeInterval = [[calendar dateFromComponents:comps] timeIntervalSinceDate:(NSDate *)value];

    if (timeInterval < 86400) {

        // Today

        return [NSString stringWithFormat:@"Today %@", [NSDateFormatter localizedStringFromDate:(NSDate *)value 

                                                                                                 dateStyle:NSDateFormatterNoStyle 

                                                                                                 timeStyle:NSDateFormatterShortStyle]];

    } else if (timeInterval < 172800) {

        // Yesterday

        return [NSString stringWithFormat:@"Yesterday %@", [NSDateFormatter localizedStringFromDate:(NSDate *)value 

                                                                                                     dateStyle:NSDateFormatterNoStyle 

                                                                                                     timeStyle:NSDateFormatterShortStyle]];

    } else {

        return [NSDateFormatter localizedStringFromDate:(NSDate *)value 

                                              dateStyle:NSDateFormatterShortStyle 

                                              timeStyle:NSDateFormatterShortStyle];

    }

}

+ (void)initialize {

    [[self class] setValueTransformer:[self new] forName:@"LastModifiedDateTransformer"];

}

@end