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//
// GraphElementProperty.h
// 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 <Foundation/Foundation.h>
/*!
@class GraphElementProperty
@brief A property. I.e. a single entry in a node's/edge's/graph's
GraphElementData table.
*/
@interface GraphElementProperty : NSObject<NSCopying> {
NSString *key;
NSString *value;
BOOL isAtom;
BOOL isKeyMatch;
}
@property (readwrite,retain) NSString *key;
@property (readwrite,retain) NSString *value;
@property (readonly) BOOL isAtom;
@property (readonly) BOOL isKeyMatch;
/*!
@brief Initialize a new key-matching object.
@param k a key to match
@result A key-matching object.
*/
- (id)initWithKeyMatching:(NSString*)k;
+ (id)keyMatching:(NSString*)k;
/*!
@brief Initialize a new atomic property.
@param n the atom's name
@result An atom.
*/
- (id)initWithAtomName:(NSString*)n;
+ (id)atom:(NSString*)n;
/*!
@brief Initialize a new property.
@param v the property's value
@param k the associated key
@result A property.
*/
- (id)initWithPropertyValue:(NSString*)v forKey:(NSString*)k;
+ (id)property:(NSString*)k withValue:(NSString*)v;
/*!
@brief A matching function for properties.
@details Two properties match iff their keys match and one of the following:
(a) they are both atomic, (b) one is a key-matching and one is a non-atomic
property, or (c) they are both non-atomic and their values match.
@param object another GraphElementProperty
@result A boolean.
*/
- (BOOL)matches:(GraphElementProperty*)object;
/*!
@brief An alias for <tt>matches:</tt>. This allows one to use built-in methods that
filter on <tt>isEqual:</tt> for <tt>NSObject</tt>s.
@param object another GraphElementProperty
@result A boolean.
*/
- (BOOL)isEqual:(id)object;
@end
// vi:ft=objc:noet:ts=4:sts=4:sw=4
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