plasma-framework/scripting/dataenginescript.h
Aaron J. Seigo 8379d47abb add useful includes
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=779433
2008-02-26 05:07:15 +00:00

101 lines
3.1 KiB
C++

/*
* Copyright 2007 by Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, 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 Library 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 PLASMA_DATAENGINESCRIPT_H
#define PLASMA_DATAENGINESCRIPT_H
#include <KGenericFactory>
#include <plasma/plasma_export.h>
#include <plasma/scripting/scriptengine.h>
namespace Plasma
{
class DataEngine;
class PLASMA_EXPORT DataEngineScript : public ScriptEngine
{
Q_OBJECT
public:
/**
* Default constructor for a DataEngineScript.
* Subclasses should not attempt to access the Plasma::DataEngine
* associated with this DataEngineScript in the constructor. All
* such set up that requires the DataEngine itself should be done
* in the init() method.
*/
explicit DataEngineScript(QObject *parent = 0);
~DataEngineScript();
/**
* Sets the Plasma::DataEngine associated with this DataEngineScript
*/
void setDataEngine(DataEngine *dataEngine);
/**
* Returns the Plasma::DataEngine associated with this script component
*/
DataEngine* dataEngine() const;
/**
* Called when the script should create a source that does not currently
* exist.
*
* @param name the name of the source that should be created
* @return true if a DataContainer was set up, false otherwise
*/
virtual bool sourceRequested(const QString &name);
/**
* Called when the script should refresh the data contained in a given
* source.
*
* @param source the name of the source that should be updated
* @return true if the data was changed, or false if there was no
* change or if the change will occur later
**/
virtual bool updateSource(const QString& source);
protected:
void setData(const QString& source, const QString& key,
const QVariant& value);
void setData(const QString &source, const QVariant &value);
void clearData(const QString& source);
void removeData(const QString& source, const QString& key);
void setSourceLimit(uint limit);
void setMinimumUpdateInterval(int minimumMs);
int minimumUpdateInterval() const;
void setUpdateInterval(uint frequency);
void clearSources();
private:
class Private;
Private * const d;
};
#define K_EXPORT_PLASMA_DATAENGINESCRIPTENGINE(libname, classname) \
K_PLUGIN_FACTORY(factory, registerPlugin<classname>();) \
K_EXPORT_PLUGIN(factory("plasma_dataenginescriptengine_" #libname))
} //Plasma namespace
#endif