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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qfxloader_p.h"
#include <private/qmlengine_p.h>
QT_BEGIN_NAMESPACE
QFxLoaderPrivate::QFxLoaderPrivate()
: item(0), qmlcomp(0)
{
}
QFxLoaderPrivate::~QFxLoaderPrivate()
{
}
QML_DEFINE_TYPE(Qt,4,6,(QT_VERSION&0x00ff00)>>8,Loader,QFxLoader)
/*!
\qmlclass Loader
\inherits Item
\brief The Loader item allows you to dynamically load an Item-based
subtree from a QML URL.
*/
/*!
\internal
\class QFxLoader
\qmlclass Loader
*/
/*!
Create a new QFxLoader instance.
*/
QFxLoader::QFxLoader(QFxItem *parent)
: QFxItem(*(new QFxLoaderPrivate), parent)
{
}
/*!
Destroy the loader instance.
*/
QFxLoader::~QFxLoader()
{
}
/*!
\internal
\fn void QFxItem::sourceChanged()
This signal is emitted whenever the item's dynamic QML
source url changes.
*/
/*!
\qmlproperty url Loader::source
This property holds the dynamic URL of the QML for the item.
This property is used for dynamically loading QML into the
item.
*/
QUrl QFxLoader::source() const
{
Q_D(const QFxLoader);
return d->source;
}
void QFxLoader::setSource(const QUrl &url)
{
Q_D(QFxLoader);
if (d->source == url)
return;
if (!d->source.isEmpty()) {
QHash<QString, QFxItem *>::Iterator iter = d->cachedChildren.find(d->source.toString());
if (iter != d->cachedChildren.end())
(*iter)->setOpacity(0.);
}
d->source = url;
d->item = 0;
if (d->source.isEmpty()) {
emit sourceChanged();
return;
}
QHash<QString, QFxItem *>::Iterator iter = d->cachedChildren.find(d->source.toString());
if (iter != d->cachedChildren.end()) {
(*iter)->setOpacity(1.);
d->item = (*iter);
emit sourceChanged();
} else {
d->qmlcomp =
new QmlComponent(qmlEngine(this), d->source, this);
if (!d->qmlcomp->isLoading())
d->_q_sourceLoaded();
else
connect(d->qmlcomp, SIGNAL(statusChanged(QmlComponent::Status)),
this, SLOT(_q_sourceLoaded()));
}
}
void QFxLoaderPrivate::_q_sourceLoaded()
{
Q_Q(QFxLoader);
if (qmlcomp) {
QmlContext *ctxt = new QmlContext(qmlContext(q));
ctxt->addDefaultObject(q);
if (!qmlcomp->errors().isEmpty()) {
qWarning() << qmlcomp->errors();
delete qmlcomp;
qmlcomp = 0;
emit q->sourceChanged();
return;
}
QObject *obj = qmlcomp->create(ctxt);
if (!qmlcomp->errors().isEmpty())
qWarning() << qmlcomp->errors();
QFxItem *qmlChild = qobject_cast<QFxItem *>(obj);
if (qmlChild) {
qmlChild->setParentItem(q);
cachedChildren.insert(source.toString(), qmlChild);
item = qmlChild;
} else {
delete qmlChild;
source = QUrl();
}
delete qmlcomp;
qmlcomp = 0;
emit q->sourceChanged();
}
}
/*!
\qmlproperty Item Loader::item
This property holds the top-level item created from source.
*/
QFxItem *QFxLoader::item() const
{
Q_D(const QFxLoader);
return d->item;
}
QT_END_NAMESPACE
#include "moc_qfxloader.cpp"
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