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/*
SPDX-FileCopyrightText: 2011 Aaron Seigo <aseigo@kde.org>
SPDX-License-Identifier: BSD-2-Clause
*/
#include <QDebug>
#include <QUrl>
#include "customDataContainersEngine.h"
#include "httpContainer.h"
/*
This DataEngine shows how to use a subclass of DataContainer to create and
manage sources. This is particularly useful when managing asynchronous requests,
such as sources that reflect network, D-Bus, etc. results.
*/
DataContainersEngine::DataContainersEngine(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!
}
bool DataContainersEngine::sourceRequestEvent(const QString &source)
{
// This engine will fetch webpages over http. First thing we do is check
// the source to make sure it is indeed an http URL.
QUrl url(source);
qDebug() << "going to fetch" << source << url << url.scheme();
if (!url.scheme().startsWith(QLatin1String("http"), Qt::CaseInsensitive)) {
return false;
}
// Create a HttpContainer, which is a subclass of Plasma::DataContainer
HttpContainer *container = new HttpContainer(url, this);
// Set the object name to be the same as the source name; DataEngine
// relies on this to identify the container. This could also be done
// in HttpContainer's constructor, but for the sake of this example
// we're dong it here to show that it must be done *before* the
// DataContainer subclass is passed to addSource
container->setObjectName(source);
// Now we tell Plasma::DataEngine about this new container
addSource(container);
// Since we successfully set up the source, return true
return true;
}
bool DataContainersEngine::updateSourceEvent(const QString &source)
{
HttpContainer *container = qobject_cast<HttpContainer *>(containerForSource(source));
if (container) {
container->fetchUrl();
}
// HttpContainer is asynchronous, so the data hasn't actually been updated yet. So
// we return false here to let the DataEngine know that nothing has changed quite yet.
return false;
}
// export the plugin; use the plugin name and the class name
K_PLUGIN_CLASS_WITH_JSON(DataContainersEngine, "plasma-dataengine-example-customDataContainers.json")
// include the moc file so the build system makes it for us
#include "customDataContainersEngine.moc"
#include "moc_customDataContainersEngine.cpp"
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