//
//  GroupMembersArrayTransformer.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
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
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// The views and conclusions contained in the software and
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#import "GroupMembersDictionaryTransformer.h"

@implementation GroupMembersDictionaryTransformer

+ (Class)transformedValueClass {
	return [NSMutableDictionary class];}

+ (BOOL)allowsReverseTransformation {
	return YES;
}

- (id)transformedValue:(id)value {
    NSMutableDictionary *groupMembersDictionary = [NSMutableDictionary dictionary];
    if (value != nil) {
        for (NSString *groupMember in (NSMutableArray *)value) {
            if ([groupMember length])
                [groupMembersDictionary setObject:@"" forKey:groupMember];
        }
    }
    return groupMembersDictionary;
}

- (id)reverseTransformedValue:(id)value {
    if (value != nil) {
        return [NSMutableArray arrayWithArray:[(NSMutableDictionary *)value allKeys]];
    } else {
        return [NSMutableArray array];
    }
}

+ (void)initialize {
    [[self class] setValueTransformer:[self new] forName:@"GroupMembersDictionaryTransformer"];
}

@end