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//
//
// GraphElementProperty.m
// TikZiT
//
// Copyright 2010 Aleks Kissinger. All rights reserved.
//
//
// This file is part of TikZiT.
//
// TikZiT is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// TikZiT is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with TikZiT. If not, see <http://www.gnu.org/licenses/>.
//
#import "GraphElementProperty.h"
#import "NSString+Tikz.h"
@implementation GraphElementProperty
+ (id)atom:(NSString*)n {
return [[[self alloc] initWithAtomName:n] autorelease];
}
+ (id)property:(NSString*)k withValue:(NSString*)v {
return [[[self alloc] initWithPropertyValue:v forKey:k] autorelease];
}
+ (id)keyMatching:(NSString*)k {
return [[[self alloc] initWithKeyMatching:k] autorelease];
}
- (id)initWithAtomName:(NSString*)n {
[super init];
[self setKey:n];
[self setValue:nil];
isAtom = YES;
isKeyMatch = NO;
return self;
}
- (id)initWithPropertyValue:(NSString*)v forKey:(NSString*)k {
[super init];
[self setKey:k];
[self setValue:v];
isAtom = NO;
isKeyMatch = NO;
return self;
}
- (id)initWithKeyMatching:(NSString*)k {
[super init];
[self setKey:k];
[self setValue:nil];
isAtom = NO;
isKeyMatch = YES;
return self;
}
- (void)setValue:(NSString *)v {
if (value != v) {
[value release];
value = [v copy];
}
}
- (NSString*)value {
if (isAtom) {
return @"(atom)";
} else {
return value;
}
}
- (void)setKey:(NSString *)k {
if (k == nil) k = @""; // don't allow nil keys
if (key != k) {
[key release];
key = [k retain];
}
}
- (NSString*)key {
return key;
}
- (BOOL)isAtom { return isAtom; }
- (BOOL)isKeyMatch { return isKeyMatch; }
- (BOOL)matches:(GraphElementProperty*)object {
// properties and atoms are taken to be incomparable
if ([self isAtom] != [object isAtom]) return NO;
// only compare keys if (a) we are both atoms, (b) i am a key match, or (c) object is a key match
if (([self isAtom] && [object isAtom]) || [self isKeyMatch] || [object isKeyMatch]) {
return [[self key] isEqual:[object key]];
}
// otherwise compare key and value
return [[self key] isEqual:[object key]] && [[self value] isEqual:[object value]];
}
- (BOOL)isEqual:(id)object {
return [self matches:object];
}
- (id)copyWithZone:(NSZone*)zone {
if (isAtom) {
return [[GraphElementProperty allocWithZone:zone] initWithAtomName:[self key]];
} else if (isKeyMatch) {
return [[GraphElementProperty allocWithZone:zone] initWithKeyMatching:[self key]];
} else {
return [[GraphElementProperty allocWithZone:zone] initWithPropertyValue:[self value] forKey:[self key]];
}
}
- (NSString*)description {
if ([self isAtom]) {
return [[self key] tikzEscapedString];
} else if ([self isKeyMatch]) {
return [NSString stringWithFormat:@"%@=*", [[self key] tikzEscapedString]];
} else {
return [NSString stringWithFormat:@"%@=%@",
[[self key] tikzEscapedString],
[[self value] tikzEscapedString]];
}
}
@end
// vi:ft=objc:ts=4:noet:sts=4:sw=4
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