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/*=====================================================================
QGroundControl Open Source Ground Control Station
(c) 2009 - 2014 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
This file is part of the QGROUNDCONTROL project
QGROUNDCONTROL 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.
QGROUNDCONTROL 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 QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
======================================================================*/
#ifndef FactLoader_h
#define FactLoader_h
#include <QObject>
#include <QMap>
#include <QXmlStreamReader>
#include <QLoggingCategory>
#include "Fact.h"
#include "UASInterface.h"
/// @file
/// @author Don Gagne <don@thegagnes.com>
Q_DECLARE_LOGGING_CATEGORY(FactLoaderLog)
/// Connects to Parameter Manager to load/update Facts
///
/// These Facts are available for binding within QML code. For example:
/// @code{.unparsed}
/// TextInput {
/// text: autopilot.parameters["RC_MAP_THROTTLE"].value
/// }
/// @endcode
class FactLoader : public QObject
{
Q_OBJECT
public:
/// @param uas Uas which this set of facts is associated with
FactLoader(UASInterface* uas, QObject* parent = NULL);
~FactLoader();
/// Returns true if the full set of facts are ready
bool factsAreReady(void) { return _factsReady; }
/// Returns the fact QVariantMap
const QVariantMap& factMap(void) { return _mapParameterName2Variant; }
signals:
/// Signalled when the full set of facts are ready
void factsReady(void);
protected:
/// Base implementation adds generic meta data based on variant type. Derived class can override to provide
/// more details meta data.
virtual void _addMetaDataToFact(Fact* fact);
private slots:
void _parameterChanged(int uas, int component, QString parameterName, QVariant value);
void _valueUpdated(QVariant value);
void _paramMgrParameterListUpToDate(void);
private:
static QVariant _stringToTypedVariant(const QString& string, FactMetaData::ValueType_t type, bool failOk = false);
QMap<Fact*, QString> _mapFact2ParameterName; ///< Maps from a Fact to a parameter name
int _uasId; ///< Id for uas which this set of Facts are associated with
int _lastSeenComponent;
QGCUASParamManagerInterface* _paramMgr;
QVariantMap _mapParameterName2Variant;
bool _factsReady; ///< All facts received from param mgr
};
#endif