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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef QPatternist_ResourceDelegator_p_H
#define QPatternist_ResourceDelegator_p_H
#include <QSet>
#include <QUrl>
#include <private/qdeviceresourceloader_p.h>
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Delegates to another ResourceLoader, but in case a URI is in an
* exception list, it delegates to a different loader.
*
* This is used for handling device variables, since when a device variable
* is rebound, a resource loader needs to carry that binding, while the
* resource loader for the other query remains as is.
*
* @since 4.5
* @author Frans Englich <frans.englich@nokia.com>
*/
class ResourceDelegator : public DeviceResourceLoader
{
public:
ResourceDelegator(const QSet<QUrl> &needsOverride,
const ResourceLoader::Ptr &parentLoader,
const ResourceLoader::Ptr &forDeviceLoader) : m_needsOverride(needsOverride)
, m_parentLoader(parentLoader)
, m_forDeviceLoader(forDeviceLoader)
{
Q_ASSERT(m_parentLoader);
}
bool isUnparsedTextAvailable(const QUrl &uri,
const QString &encoding) override;
ItemType::Ptr announceUnparsedText(const QUrl &uri) override;
Item openUnparsedText(const QUrl &uri,
const QString &encoding,
const ReportContext::Ptr &context,
const SourceLocationReflection *const where) override;
Item openDocument(const QUrl &uri,
const ReportContext::Ptr &context) override;
SequenceType::Ptr announceDocument(const QUrl &uri, const Usage usageHint) override;
bool isDocumentAvailable(const QUrl &uri) override;
Item::Iterator::Ptr openCollection(const QUrl &uri) override;
SequenceType::Ptr announceCollection(const QUrl &uri) override;
/**
* Returns the union of the deviceURIs() that ResourceDelegator's two
* resource loaders has.
*/
QSet<QUrl> deviceURIs() const override;
private:
const QSet<QUrl> m_needsOverride;
const ResourceLoader::Ptr m_parentLoader;
const ResourceDelegator::Ptr m_forDeviceLoader;
};
}
QT_END_NAMESPACE
#endif
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