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adium / Source / AILogDateFormatter.m

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//
//  AILogDateFormatter.m
//  Adium
//
//  Created by Evan Schoenberg on 7/30/06.
//

#import "AILogDateFormatter.h"
#import "AICalendarDate.h"
#import <AIUtilities/AIApplicationAdditions.h>

@implementation AILogDateFormatter

- (NSString *)stringForObjectValue:(NSDate *)date
{
        NSString *returnValue = nil;

        if ([self respondsToSelector:@selector(timeStyle)] && [date isKindOfClass:[AICalendarDate class]]) {
                NSInteger today = [[NSCalendarDate calendarDate] dayOfCommonEra];
                NSInteger dateDay = [(AICalendarDate *)date dayOfCommonEra];
                NSDateFormatterStyle timeStyle = [self timeStyle];

                if ((dateDay == today) || (dateDay == (today - 1))) {
                        NSString                        *dayString = (dateDay == today) ? AILocalizedString(@"Today", "Day designation for the current day") : AILocalizedString(@"Yesterday", "Day designation for the previous day");
                        if ((timeStyle != NSDateFormatterNoStyle) &&
                                ([(AICalendarDate *)date granularity] == AISecondGranularity)) {
                                //Supposed to show time, and the date has sufficient granularity to show it
                                NSDateFormatterStyle dateStyle = [self dateStyle];
                                NSMutableString *mutableString = [dayString mutableCopy];

                                [self setDateStyle:NSDateFormatterNoStyle];
                                [mutableString appendString:@" "];
                                [mutableString appendString:[super stringForObjectValue:date]];
                                [self setDateStyle:dateStyle];
        
                                returnValue = [mutableString autorelease];
                        }

                } else {
                        if ((timeStyle != NSDateFormatterNoStyle) &&
                                ([(AICalendarDate *)date granularity] == AIDayGranularity)) {
                                //Currently supposed to show time, but the date does not have that level of granularity
                                
                                [self setTimeStyle:NSDateFormatterNoStyle];
                                returnValue = [super stringForObjectValue:date];
                                [self setTimeStyle:timeStyle];
                        }
                }
        }

        if (![returnValue length]) returnValue = [super stringForObjectValue:date];
        if (![returnValue length]) returnValue = [date description];

        return returnValue;
}

@end