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73 lines
2.5 KiB
73 lines
2.5 KiB
/***************************************************************************
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* Copyright (C) 2007 by Ken Werner *
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* ken.werner@web.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#ifndef TRIGGEREDSOURCE_H
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#define TRIGGEREDSOURCE_H
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#include "source.h"
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#include <qevent.h>
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/**
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* TriggeredSource provides fetchValue and
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* can be triggered asynchronously by ThreadedTrigger
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* @author Ken Werner
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*/
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class TriggeredSource : public Source{
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Q_OBJECT //macro which activates signals and slots (moc)
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public:
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/**
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* Creates a new TriggeredSource
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*/
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TriggeredSource(QWidget* inParent);
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virtual ~TriggeredSource();
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public slots:
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/**
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* Returns the formatted value of this source
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*/
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virtual QString getValue() const;
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/**
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* Fetches and returns the value of this source
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* This method might be called from a thread so don't call it directly
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*/
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virtual QString fetchValue() = 0;
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signals:
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/**
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* This signal is emitted whenever the value of this source (mValue) is updated
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*/
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void valueUpdated(const QString& inValue);
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protected:
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/**
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* consumes the UpdateEvent
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*/
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virtual void customEvent(QCustomEvent* event);
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/**
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* the buffered value of this source
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*/
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QString mValue;
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};
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#endif //TRIGGEREDSOURCE_H
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