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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/>.
======================================================================*/
/// @file
/// @author Don Gagne <don@thegagnes.com>
#ifndef FactSystem_h
#define FactSystem_h
#include "Fact.h"
#include "FactLoader.h"
#include "FactMetaData.h"
#include "UASInterface.h"
#include "QGCSingleton.h"
#include "FactValidator.h"
/// FactSystem is a singleton which provides access to the Facts in the system
///
/// The components of the FactSystem are a Fact which holds an individual value. FactMetaData holds
/// additional meta data associated with a Fact such as description, min/max ranges and so forth.
/// The FactValidator object is a QML validator which validates input according to the FactMetaData
/// settings. Client code can then use this system to expose sets of Facts to QML code. An example
/// of this is the PX4ParameterFacts onbject which is part of the PX4 AutoPilot plugin. It exposes
/// the firmware parameters to QML such that you can bind QML ui elements directly to parameters.
class FactSystem : public QGCSingleton
{
Q_OBJECT
DECLARE_QGC_SINGLETON(FactSystem, FactSystem)
private:
/// All access to FactSystem is through FactSystem::instance, so constructor is private
FactSystem(QObject* parent = NULL);
~FactSystem();
static const char* _factSystemQmlUri; ///< URI for FactSystem QML imports
};
#endif