plasma-framework/examples/dataengines/simpleEngine/simpleEngine.cpp
Bhushan Shah 8557409793 Port simple DataEngine example
REVIEW: 112510
2013-09-04 18:14:53 +05:30

82 lines
3.3 KiB
C++

/*
* Copyright 2011 Aaron Seigo <aseigo@kde.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <QColor>
#include <QTime>
#include <klocalizedstring.h>
#include "simpleEngine.h"
/*
This DataEngine provides a static set of data that is created on
engine creation. This is a common pattern for DataEngines that relay
information such as hardware events and shows the most basic form of
a DataEngine
*/
SimpleEngine::SimpleEngine(QObject *parent, const QVariantList &args)
: Plasma::DataEngine(parent, args)
{
// we've passed the constructor's args to our parent class
// we're done for now! Call init()
init();
}
void SimpleEngine::init()
{
// So now we will set up some sources.
// Each DataEngine will, generally, be loaded once. Each DataEngine
// can provide multiple sets of data keyed by a string, called "Sources".
// In this simplest of cases, we just create some sources arbitrarily.
// This is the simplest form, with source name and one bit of data.
// Note how the source name is not translated! They can be marked with
// I18N_NOOP, however, if they should be translatable in a visualization.
setData("Simple Source", i18n("Very simple data"));
// a source can have multiple entries, differentiated by key names,
// which are also not translated:
setData("Multiple Source", "First", i18n("First"));
setData("Multiple Source", "Second", i18n("Second"));
// We can also set the data up first and apply it all at once
// Note how data types other than strings can be used as well; anything
// that works with QVariant, in fact.
Plasma::DataEngine::Data data;
data.insert("Cow", "mooo");
data.insert("Black", QColor(0, 0, 0));
data.insert("Time", QTime::currentTime());
setData("Another Source", data);
}
// export the plugin; use the plugin name and the class name
K_EXPORT_PLASMA_DATAENGINE_WITH_JSON(org.kde.examples.simpleEngine, SimpleEngine, "plasma-dataengine-example-simpleEngine.json")
// include the moc file so the build system makes it for us
#include "simpleEngine.moc"