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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
****************************************************************************/
#pragma once
#include "imagecachecollectorinterface.h"
namespace QmlDesigner {
template<typename CollectorEntries>
class ImageCacheDispatchCollector final : public ImageCacheCollectorInterface
{
public:
ImageCacheDispatchCollector(CollectorEntries collectors)
: m_collectors{std::move(collectors)} {};
void start(Utils::SmallStringView filePath,
Utils::SmallStringView state,
const ImageCache::AuxiliaryData &auxiliaryData,
CaptureCallback captureCallback,
AbortCallback abortCallback) override
{
std::apply(
[&](const auto &...collectors) {
dispatchStart(filePath,
state,
auxiliaryData,
std::move(captureCallback),
std::move(abortCallback),
collectors...);
},
m_collectors);
}
std::pair<QImage, QImage> createImage(Utils::SmallStringView filePath,
Utils::SmallStringView state,
const ImageCache::AuxiliaryData &auxiliaryData) override
{
return std::apply(
[&](const auto &...entries) {
return dispatchCreateImage(filePath, state, auxiliaryData, entries...);
},
m_collectors);
}
QIcon createIcon(Utils::SmallStringView filePath,
Utils::SmallStringView state,
const ImageCache::AuxiliaryData &auxiliaryData) override
{
return std::apply(
[&](const auto &...entries) {
return dispatchCreateIcon(filePath, state, auxiliaryData, entries...);
},
m_collectors);
}
private:
template<typename Collector, typename... Collectors>
void dispatchStart(Utils::SmallStringView filePath,
Utils::SmallStringView state,
const ImageCache::AuxiliaryData &auxiliaryData,
CaptureCallback captureCallback,
AbortCallback abortCallback,
const Collector &collector,
const Collectors &...collectors)
{
if (collector.first(filePath, state, auxiliaryData)) {
collector.second->start(filePath,
state,
auxiliaryData,
std::move(captureCallback),
std::move(abortCallback));
} else {
dispatchStart(filePath,
state,
auxiliaryData,
std::move(captureCallback),
std::move(abortCallback),
collectors...);
}
}
void dispatchStart(Utils::SmallStringView,
Utils::SmallStringView,
const ImageCache::AuxiliaryData &,
CaptureCallback,
AbortCallback)
{
qWarning() << "ImageCacheDispatchCollector: cannot handle file type.";
}
template<typename Collector, typename... Collectors>
QIcon dispatchCreateIcon(Utils::SmallStringView filePath,
Utils::SmallStringView state,
const ImageCache::AuxiliaryData &auxiliaryData,
const Collector &collector,
const Collectors &...collectors)
{
if (collector.first(filePath, state, auxiliaryData)) {
return collector.second->createIcon(filePath, state, auxiliaryData);
}
return dispatchCreateIcon(filePath, state, auxiliaryData, collectors...);
}
QIcon dispatchCreateIcon(Utils::SmallStringView,
Utils::SmallStringView,
const ImageCache::AuxiliaryData &)
{
qWarning() << "ImageCacheDispatchCollector: cannot handle file type.";
return {};
}
template<typename Collector, typename... Collectors>
std::pair<QImage, QImage> dispatchCreateImage(Utils::SmallStringView filePath,
Utils::SmallStringView state,
const ImageCache::AuxiliaryData &auxiliaryData,
const Collector &collector,
const Collectors &...collectors)
{
if (collector.first(filePath, state, auxiliaryData)) {
return collector.second->createImage(filePath, state, auxiliaryData);
}
return dispatchCreateImage(filePath, state, auxiliaryData, collectors...);
}
std::pair<QImage, QImage> dispatchCreateImage(Utils::SmallStringView,
Utils::SmallStringView,
const ImageCache::AuxiliaryData &)
{
qWarning() << "ImageCacheDispatchCollector: cannot handle file type.";
return {};
}
private:
CollectorEntries m_collectors;
};
} // namespace QmlDesigner
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