| 1 | // Copyright (C) 2021 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 QQMLCPPONASSIGNMENT_P_H |
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| 5 | #define QQMLCPPONASSIGNMENT_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/qqmlpropertyvalueinterceptor_p.h> |
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| 19 | #include <QtQml/qqmlpropertyvaluesource.h> |
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| 20 | |
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| 21 | QT_BEGIN_NAMESPACE |
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| 22 | |
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| 23 | /*! \internal |
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| 24 | |
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| 25 | Helper class that provides setTarget() functionality for both value |
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| 26 | interceptors and value sources. |
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| 27 | |
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| 28 | Property value sources could be problematic because QQuickAbstractAnimation |
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| 29 | changes access specifier of QQmlPropertyValueSource::setTarget() to private |
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| 30 | (unintentionally?). This API allows to avoid manual casts to base types as |
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| 31 | the C++ compiler would implicitly cast derived classes in this case. |
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| 32 | */ |
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| 33 | struct Q_QML_PRIVATE_EXPORT QQmlCppOnAssignmentHelper |
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| 34 | { |
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| 35 | // TODO: in theory, this API might just accept QObject * and int that would |
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| 36 | // give the QMetaProperty. using the meta property, one could create |
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| 37 | // QQmlProperty with a call to QQmlProperty::restore() (if there's an |
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| 38 | // overload that takes QMetaProperty instead of QQmlPropertyData - which is |
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| 39 | // also possible to add by using QQmlPropertyData::load()) |
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| 40 | static void set(QQmlPropertyValueInterceptor *interceptor, const QQmlProperty &property); |
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| 41 | static void set(QQmlPropertyValueSource *valueSource, const QQmlProperty &property); |
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| 42 | }; |
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| 43 | |
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| 44 | QT_END_NAMESPACE |
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| 45 | |
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| 46 | #endif // QQMLCPPONASSIGNMENT_P_H |
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| 47 | |
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