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//
// GraphElementData.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 GraphElementData
@brief Store extra data associated with a graph, node, or edge.
@details Store the extra (style, ...) data associated with
a graph, node, or edge. This data is stored as a mutable
array of properties. It also implements hash-like accessors,
but care should be taken using these, as the list can contain
multiple occurrences of the same key.
Convention: Getters and setters act on the *first* occurrence
of the key. 'Unsetters' remove *all* occurrences.
*/
@interface GraphElementData : NSMutableArray {
NSMutableArray *properties;
}
/*!
@brief Set the given value for the *first* property matching this key. Add a
new property if it doesn't already exist.
@param val the value to set
@param key the key for this property
*/
- (void)setProperty:(NSString*)val forKey:(NSString*)key;
/*!
@brief Remove *all* occurences of the property with the given key.
@param key
*/
- (void)unsetProperty:(NSString*)key;
/*!
@brief Return the value of the *first* occurrence of the given key.
@param key
*/
- (NSString*)propertyForKey:(NSString*)key;
/*!
@brief Add the given atom to the list, if it's not already present.
@param atom
*/
- (void)setAtom:(NSString*)atom;
/*!
@brief Remove *all* occurrences of the given atom.
@param atom
*/
- (void)unsetAtom:(NSString*)atom;
/*!
@brief Returns YES if the list contains at least one occurrence of
the given atom.
@param atom
@result A boolean value.
*/
- (BOOL)isAtomSet:(NSString*)atom;
/*!
@brief Returns a TikZ-friendly string containing all of the properties.
@result A string.
*/
- (NSString*)tikzList;
@end
// vi:ft=objc:noet:ts=4:sts=4:sw=4
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