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Diffstat (limited to 'src/webchannel/qqmlwebchannel.cpp')
| -rw-r--r-- | src/webchannel/qqmlwebchannel.cpp | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/webchannel/qqmlwebchannel.cpp b/src/webchannel/qqmlwebchannel.cpp new file mode 100644 index 0000000..ca99fe5 --- /dev/null +++ b/src/webchannel/qqmlwebchannel.cpp @@ -0,0 +1,211 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com> +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtWebChannel module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qqmlwebchannel.h" + +#include "qwebchannel_p.h" +#include "qmetaobjectpublisher_p.h" +#include "qwebchannelabstracttransport.h" + +#include <QtQml/QQmlContext> + +#include "qqmlwebchannelattached_p.h" + +QT_BEGIN_NAMESPACE + +class QQmlWebChannelPrivate : public QWebChannelPrivate +{ + Q_DECLARE_PUBLIC(QQmlWebChannel) +public: + QVector<QObject*> registeredObjects; + + void _q_objectIdChanged(const QString &newId); +}; + +void QQmlWebChannelPrivate::_q_objectIdChanged(const QString &newId) +{ + Q_Q(QQmlWebChannel); + const QQmlWebChannelAttached *const attached = qobject_cast<QQmlWebChannelAttached*>(q->sender()); + Q_ASSERT(attached); + Q_ASSERT(attached->parent()); + Q_ASSERT(registeredObjects.contains(attached->parent())); + + QObject *const object = attached->parent(); + const QString &oldId = publisher->registeredObjectIds.value(object); + + if (!oldId.isEmpty()) { + q->deregisterObject(object); + } + + q->registerObject(newId, object); +} + +QQmlWebChannel::QQmlWebChannel(QObject *parent) + : QWebChannel(*(new QQmlWebChannelPrivate), parent) +{ +} + +QQmlWebChannel::~QQmlWebChannel() +{ + +} + +void QQmlWebChannel::registerObjects(const QVariantMap &objects) +{ + Q_D(QQmlWebChannel); + QMap<QString, QVariant>::const_iterator it = objects.constBegin(); + for (; it != objects.constEnd(); ++it) { + QObject *object = it.value().value<QObject*>(); + if (!object) { + qWarning("Invalid QObject given to register under name %s", qPrintable(it.key())); + continue; + } + d->publisher->registerObject(it.key(), object); + } +} + +QQmlWebChannelAttached *QQmlWebChannel::qmlAttachedProperties(QObject *obj) +{ + return new QQmlWebChannelAttached(obj); +} + +void QQmlWebChannel::connectTo(QObject *transport) +{ + if (QWebChannelAbstractTransport *realTransport = qobject_cast<QWebChannelAbstractTransport*>(transport)) { + QWebChannel::connectTo(realTransport); + } else { + qWarning() << "Cannot connect to transport" << transport << " - it is not a QWebChannelAbstractTransport."; + } +} + +void QQmlWebChannel::disconnectFrom(QObject *transport) +{ + if (QWebChannelAbstractTransport *realTransport = qobject_cast<QWebChannelAbstractTransport*>(transport)) { + QWebChannel::disconnectFrom(realTransport); + } else { + qWarning() << "Cannot disconnect from transport" << transport << " - it is not a QWebChannelAbstractTransport."; + } +} + +QQmlListProperty<QObject> QQmlWebChannel::registeredObjects() +{ + return QQmlListProperty<QObject>(this, 0, + registeredObjects_append, + registeredObjects_count, + registeredObjects_at, + registeredObjects_clear); +} + +void QQmlWebChannel::registeredObjects_append(QQmlListProperty<QObject> *prop, QObject *object) +{ + const QQmlWebChannelAttached *const attached = qobject_cast<QQmlWebChannelAttached*>( + qmlAttachedPropertiesObject<QQmlWebChannel>(object, false /* don't create */)); + if (!attached) { + const QQmlContext *const context = qmlContext(object); + qWarning() << "Cannot register object" << context->nameForObject(object) << '(' << object << ") without attached WebChannel.id property. Did you forget to set it?"; + return; + } + QQmlWebChannel *channel = static_cast<QQmlWebChannel*>(prop->object); + if (!attached->id().isEmpty()) { + // TODO: warning in such cases? + channel->registerObject(attached->id(), object); + } + channel->d_func()->registeredObjects.append(object); + connect(attached, SIGNAL(idChanged(QString)), channel, SLOT(_q_objectIdChanged(QString))); +} + +int QQmlWebChannel::registeredObjects_count(QQmlListProperty<QObject> *prop) +{ + return static_cast<QQmlWebChannel*>(prop->object)->d_func()->registeredObjects.size(); +} + +QObject *QQmlWebChannel::registeredObjects_at(QQmlListProperty<QObject> *prop, int index) +{ + return static_cast<QQmlWebChannel*>(prop->object)->d_func()->registeredObjects.at(index); +} + +void QQmlWebChannel::registeredObjects_clear(QQmlListProperty<QObject> *prop) +{ + QQmlWebChannel *channel = static_cast<QQmlWebChannel*>(prop->object); + foreach (QObject *object, channel->d_func()->registeredObjects) { + channel->deregisterObject(object); + } + return channel->d_func()->registeredObjects.clear(); +} + +QQmlListProperty<QObject> QQmlWebChannel::transports() +{ + return QQmlListProperty<QObject>(this, 0, + transports_append, + transports_count, + transports_at, + transports_clear); +} + +void QQmlWebChannel::transports_append(QQmlListProperty<QObject> *prop, QObject *transport) +{ + QQmlWebChannel *channel = static_cast<QQmlWebChannel*>(prop->object); + channel->connectTo(transport); +} + +int QQmlWebChannel::transports_count(QQmlListProperty<QObject> *prop) +{ + return static_cast<QQmlWebChannel*>(prop->object)->d_func()->transports.size(); +} + +QObject *QQmlWebChannel::transports_at(QQmlListProperty<QObject> *prop, int index) +{ + QQmlWebChannel *channel = static_cast<QQmlWebChannel*>(prop->object); + return channel->d_func()->transports.at(index); +} + +void QQmlWebChannel::transports_clear(QQmlListProperty<QObject> *prop) +{ + QWebChannel *channel = static_cast<QWebChannel*>(prop->object); + foreach (QWebChannelAbstractTransport *transport, channel->d_func()->transports) { + channel->disconnectFrom(transport); + } + Q_ASSERT(channel->d_func()->transports.isEmpty()); +} + +QT_END_NAMESPACE + +#include "moc_qqmlwebchannel.cpp" |