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/*
TikZiT - a GUI diagram editor for TikZ
Copyright (C) 2018 Aleks Kissinger
This program 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.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
/*!
* A class which holds either a single key/value pair (i.e. a proper property)
* or simply a key with no value (i.e. an atom).
*/
#ifndef GRAPHELEMENTPROPERTY_H
#define GRAPHELEMENTPROPERTY_H
#include <QObject>
class GraphElementProperty
{
public:
GraphElementProperty();
GraphElementProperty(QString key, QString value, bool atom);
/*!
* \brief GraphElementProperty constructs a proper property with the given key/value
* \param key
* \param value
*/
GraphElementProperty(QString key, QString value);
/*!
* \brief GraphElementProperty constructs an atom with the given key
* \param key
*/
GraphElementProperty(QString key);
QString key() const;
void setKey(const QString &key);
QString value() const;
void setValue(const QString &value);
bool atom() const;
/*!
* \brief operator == returns true for atoms if the keys match and for properties
* if the keys and values match. Note a property is never equal to an atom.
* \param p
* \return
*/
bool operator==(const GraphElementProperty &p);
/*!
* \brief tikzEscape prepares a property key or value for export to tikz code. If
* the property only contains numbers, letters, whitespace, or the characters (<,>,-)
* this method does nothing. Otherwise, wrap the property in curly braces.
* \param str
* \return
*/
static QString tikzEscape(QString str);
/*!
* \brief tikz escapes the key/value of a propery or atom and outputs it as "key=value"
* for properties and "key" for atoms.
* \return
*/
QString tikz();
signals:
public slots:
private:
QString _key;
QString _value;
bool _atom;
};
#endif // GRAPHELEMENTPROPERTY_H
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