| 1 | // Copyright (C) 2022 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QQMLPROPERTYTOPROPERTYBINDINDING_P_H |
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| 5 | #define QQMLPROPERTYTOPROPERTYBINDINDING_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <private/qqmlabstractbinding_p.h> |
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| 19 | #include <private/qqmlnotifier_p.h> |
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| 20 | #include <QtCore/qproperty.h> |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | class Q_QML_PRIVATE_EXPORT QQmlPropertyToPropertyBinding |
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| 25 | : public QQmlAbstractBinding, public QQmlNotifierEndpoint |
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| 26 | { |
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| 27 | public: |
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| 28 | QQmlPropertyToPropertyBinding( |
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| 29 | QQmlEngine *engine, QObject *sourceObject, int sourcePropertyIndex, |
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| 30 | QObject *targetObject, int targetPropertyIndex); |
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| 31 | |
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| 32 | Kind kind() const final; |
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| 33 | void setEnabled(bool e, QQmlPropertyData::WriteFlags flags) final; |
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| 34 | |
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| 35 | void update(QQmlPropertyData::WriteFlags flags = QQmlPropertyData::DontRemoveBinding); |
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| 36 | |
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| 37 | private: |
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| 38 | static void trigger(QPropertyObserver *, QUntypedPropertyData *); |
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| 39 | |
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| 40 | void captureProperty( |
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| 41 | const QMetaObject *sourceMetaObject, int notifyIndex, |
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| 42 | bool isSourceBindable, bool isTargetBindable); |
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| 43 | |
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| 44 | struct Observer : QPropertyObserver { |
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| 45 | static void trigger(QPropertyObserver *observer, QUntypedPropertyData *); |
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| 46 | Observer(QQmlPropertyToPropertyBinding *binding) |
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| 47 | : QPropertyObserver(trigger) |
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| 48 | , binding(binding) |
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| 49 | { |
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| 50 | } |
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| 51 | QQmlPropertyToPropertyBinding *binding = nullptr; |
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| 52 | }; |
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| 53 | |
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| 54 | std::unique_ptr<Observer> observer; |
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| 55 | QQmlEngine *m_engine = nullptr; |
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| 56 | QObject *m_sourceObject = nullptr; |
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| 57 | int m_sourcePropertyIndex = -1; |
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| 58 | }; |
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| 59 | |
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| 60 | void QQmlPropertyGuard_callback(QQmlNotifierEndpoint *e, void **); |
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| 61 | |
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| 62 | QT_END_NAMESPACE |
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| 63 | |
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| 64 | #endif |
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| 65 | |
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