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// Copyright (C) 2008 Lukas Lalinsky
//
// 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 2 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#ifndef DOMUTILS_H
#define DOMUTILS_H
#include <QDebug>
#include <QDomDocument>
#include <QDomElement>
#include <QMetaEnum>
#include <QMetaObject>
inline void
appendStringElement(QDomDocument &doc, QDomElement &parent, const QString &name, const QString &value)
{
if (!value.isEmpty()) {
QDomElement element = doc.createElement(name);
element.appendChild(doc.createTextNode(value));
parent.appendChild(element);
}
}
inline QString
readStringElement(QDomElement &parent, const QString &name, const QString &defaultValue = QString())
{
QDomElement element = parent.firstChildElement(name);
if (!element.isNull()) {
return element.text();
}
return defaultValue;
}
inline const char *
enumNameFromValue(const QObject *obj, const char *enumerator, int value)
{
const QMetaObject *metaObj = obj->metaObject();
int enumeratorIndex = metaObj->indexOfEnumerator(enumerator);
return metaObj->enumerator(enumeratorIndex).valueToKey(value);
}
inline int
enumValueFromName(const QObject *obj, const char *enumerator, const char *key)
{
const QMetaObject *metaObj = obj->metaObject();
int enumeratorIndex = metaObj->indexOfEnumerator(enumerator);
return metaObj->enumerator(enumeratorIndex).keyToValue(key);
}
template <typename T> inline void
appendEnumElement(QDomDocument doc, QDomElement element, const QString &name, T value, const QObject *obj, const char *enumName)
{
appendStringElement(doc, element, name, enumNameFromValue(obj, enumName, value));
}
template <typename T> inline T
readEnumElement(QDomElement &parent, const QString &name, T defaultValue, const QObject *obj, const char *enumName)
{
QDomElement element = parent.firstChildElement(name);
if (!element.isNull()) {
return T(enumValueFromName(obj, enumName, element.text().toLatin1().constData()));
}
return defaultValue;
}
inline void
appendBoolElement(QDomDocument doc, QDomElement element, const QString &name, bool value, const QString &trueName = "True", const QString &falseName = "False")
{
appendStringElement(doc, element, name, value ? trueName : falseName);
}
inline bool
readBoolElement(QDomElement &parent, const QString &name, bool defaultValue = false, const QString &trueName = "True", const QString &falseName = "False")
{
QDomElement element = parent.firstChildElement(name);
if (!element.isNull()) {
QString value = element.text();
if (value == trueName) {
return true;
}
else if (value == falseName) {
return false;
}
else {
qWarning() << "Invalid value for" << name << ":" << value << "(must be either" << trueName << "or" << falseName << ")";
}
}
return defaultValue;
}
inline void
appendFloatElement(QDomDocument &doc, QDomElement &parent, const QString &name, qreal value)
{
QDomElement element = doc.createElement(name);
element.appendChild(doc.createTextNode(QString::number(double(value))));
parent.appendChild(element);
}
inline qreal
readFloatElement(QDomElement &parent, const QString &name, qreal defaultValue = 0)
{
QDomElement element = parent.firstChildElement(name);
if (!element.isNull()) {
return element.text().toDouble();
}
return defaultValue;
}
inline void
appendIntElement(QDomDocument &doc, QDomElement &parent, const QString &name, int value)
{
QDomElement element = doc.createElement(name);
element.appendChild(doc.createTextNode(QString::number(value)));
parent.appendChild(element);
}
inline int
readIntElement(QDomElement &parent, const QString &name, int defaultValue = 0)
{
QDomElement element = parent.firstChildElement(name);
if (!element.isNull()) {
return element.text().toInt();
}
return defaultValue;
}
inline void
appendPointElement(QDomDocument &doc, QDomElement &parent, const QString &name, QPointF value)
{
if (!value.isNull()) {
QDomElement element = doc.createElement(name);
appendFloatElement(doc, element, "x", value.x());
appendFloatElement(doc, element, "y", value.y());
parent.appendChild(element);
}
}
inline QPointF
readPointElement(QDomElement &parent, const QString &name)
{
QDomElement element = parent.firstChildElement(name);
if (!element.isNull()) {
qreal x = readFloatElement(element, "x");
qreal y = readFloatElement(element, "y");
return QPointF(x, y);
}
return QPointF();
}
#endif
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