126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
/*
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* Copyright 2009 by Alan Alpert <alan.alpert@nokia.com>
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* Copyright 2010 by Ménard Alexis <menard@kde.org>
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* Copyright 2010 by Marco MArtin <mart@kde.org>
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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 Library General Public License as
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* published by the Free Software Foundation; either version 2, 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 Library General Public
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* License 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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#include "datasource_p.h"
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#include "qdeclarativeengine.h"
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#include "qdeclarativecontext.h"
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#include <Plasma/Applet>
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namespace Plasma
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{
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DataSource::DataSource(QObject* parent)
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: QObject(parent),
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m_interval(1000),
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m_dataEngine(0)
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{
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setObjectName("DataSource");
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m_data = new QDeclarativePropertyMap(this);
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connect(this, SIGNAL(engineChanged()),
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this, SLOT(setupData()));
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connect(this, SIGNAL(sourceChanged()),
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this, SLOT(setupData()));
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connect(this, SIGNAL(intervalChanged()),
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this, SLOT(setupData()));
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}
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void DataSource::setSource(const QString &s)
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{
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if (s == m_source) {
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return;
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}
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m_source = s;
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emit sourceChanged();
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}
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void DataSource::setupData()
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{
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if (/*m_source.isEmpty() ||*/ m_engine.isEmpty()) {
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return;
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}
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if (m_dataEngine) {
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m_dataEngine->disconnectSource(m_connectedSource, this);
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m_dataEngine = 0;
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m_keys.clear();
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emit keysChanged();
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}
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Plasma::DataEngine* de = dataEngine(m_engine);
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if (!de) {
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kWarning() << "DataEngine not found";
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return;
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}
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de->connectSource(m_source, this, m_interval);
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m_dataEngine = de;
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m_connectedSource = m_source;
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connect(de, SIGNAL(sourceAdded(constQString&)), this, SIGNAL(sourcesChanged()));
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connect(de, SIGNAL(sourceRemoved(constQString&)), this, SIGNAL(sourcesChanged()));
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}
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void DataSource::dataUpdated(const QString &sourceName, const Plasma::DataEngine::Data &data)
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{
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Q_UNUSED(sourceName);//Only one source
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QStringList newKeys;
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foreach (const QString &key, data.keys()) {
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// Properties in QML must start lowercase.
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QString ourKey = key.toLower();
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m_data->insert(ourKey.toLatin1(), data.value(key));
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newKeys << ourKey;
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}
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if (newKeys != m_keys) {
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//FIXME: pretty utterly inefficient
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foreach (const QString &key, m_keys) {
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if (!newKeys.contains(key)) {
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m_data->insert(key.toLatin1(), QVariant());
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}
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}
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emit keysChanged();
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m_keys = newKeys;
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}
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emit dataChanged();
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}
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Plasma::Service *DataSource::service()
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{
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if (!m_service) {
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m_service = m_dataEngine->serviceForSource(m_source);
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}
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return m_service;
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}
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}
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#include "datasource_p.moc"
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