| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtWebEngine 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 |
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| ** |
| ** 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 |
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| ** information to ensure the GNU General Public License requirements will |
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| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QWEBENGINECALLBACK_H |
| #define QWEBENGINECALLBACK_H |
| |
| #include <QtWebEngineCore/qtwebenginecoreglobal.h> |
| |
| #include <QtCore/qshareddata.h> |
| #include <QtCore/qstring.h> |
| #include <QtCore/qvariant.h> |
| |
| namespace QtWebEngineCore { |
| class CallbackDirectory; |
| } |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QtWebEnginePrivate { |
| |
| template<typename T> |
| class QWebEngineCallbackPrivateBase : public QSharedData { |
| public: |
| QWebEngineCallbackPrivateBase() {} |
| virtual ~QWebEngineCallbackPrivateBase() {} |
| virtual void operator()(T) = 0; |
| }; |
| |
| template<typename T, typename F> |
| class QWebEngineCallbackPrivate : public QWebEngineCallbackPrivateBase<T> { |
| public: |
| QWebEngineCallbackPrivate(F callable) : m_callable(callable) {} |
| void operator()(T value) override { m_callable(value); } |
| |
| private: |
| F m_callable; |
| }; |
| |
| } // namespace QtWebEnginePrivate |
| |
| template<typename T> |
| class QWebEngineCallback { |
| public: |
| template<typename F> |
| QWebEngineCallback(F f) |
| : d(new QtWebEnginePrivate::QWebEngineCallbackPrivate<T, F>(f)) |
| {} |
| QWebEngineCallback() {} |
| void swap(QWebEngineCallback &other) Q_DECL_NOTHROW { qSwap(d, other.d); } |
| operator bool() const { return d; } |
| |
| private: |
| friend class QtWebEngineCore::CallbackDirectory; |
| QExplicitlySharedDataPointer<QtWebEnginePrivate::QWebEngineCallbackPrivateBase<T>> d; |
| }; |
| |
| Q_DECLARE_SHARED(QWebEngineCallback<int>) |
| Q_DECLARE_SHARED(QWebEngineCallback<const QByteArray &>) |
| Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QWebEngineCallback<bool>) |
| Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QWebEngineCallback<const QString &>) |
| Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QWebEngineCallback<const QVariant &>) |
| |
| QT_END_NAMESPACE |
| |
| #endif // QWEBENGINECALLBACK_H |