1 files changed, 73 insertions, 0 deletions
diff --git a/src/data/graphelementproperty.cpp b/src/data/graphelementproperty.cpp
new file mode 100644
index 0000000..aa1bfc8
--- /dev/null
+++ b/src/data/graphelementproperty.cpp
@@ -0,0 +1,73 @@
+/*
+    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/>.
+*/
+
+#include "graphelementproperty.h"
+
+#include <QRegExp>
+
+GraphElementProperty::GraphElementProperty ():
+    _key(""), _value(""), _atom(false)
+{}
+
+GraphElementProperty::GraphElementProperty(QString key, QString value, bool atom) :
+    _key(key), _value(value), _atom(atom)
+{}
+
+GraphElementProperty::GraphElementProperty(QString key, QString value) :
+    _key(key), _value(value), _atom(false)
+{}
+
+GraphElementProperty::GraphElementProperty(QString key) :
+    _key(key), _value(""), _atom(true)
+{}
+
+QString GraphElementProperty::key() const
+{ return _key; }
+
+QString GraphElementProperty::value() const
+{ return _value; }
+
+void GraphElementProperty::setValue(const QString &value)
+{ _value = value; }
+
+bool GraphElementProperty::atom() const
+{ return _atom; }
+
+
+bool GraphElementProperty::operator==(const GraphElementProperty &p)
+{
+    if (_atom) return p.atom() && p.key() == _key;
+    else return !p.atom() && p.key() == _key && p.value() == _value;
+}
+
+QString GraphElementProperty::tikzEscape(QString str)
+{
+    QRegExp re("[0-9a-zA-Z<> \\-'.]*");
+    if (re.exactMatch(str)) return str;
+    else return "{" + str + "}";
+}
+
+QString GraphElementProperty::tikz() {
+    if (_atom) return tikzEscape(_key);
+    return tikzEscape(_key) + "=" + tikzEscape(_value);
+}
+
+void GraphElementProperty::setKey(const QString &key)
+{
+    _key = key;
+}