| 1 | // Copyright (C) 2016 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 QQMLPROXYMETAOBJECT_P_H |
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| 5 | #define QQMLPROXYMETAOBJECT_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/qtqmlglobal_p.h> |
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| 19 | #include <private/qmetaobjectbuilder_p.h> |
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| 20 | |
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| 21 | #include <QtCore/QMetaObject> |
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| 22 | #include <QtCore/QObject> |
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| 23 | |
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| 24 | #include <private/qobject_p.h> |
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| 25 | |
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| 26 | QT_BEGIN_NAMESPACE |
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| 27 | |
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| 28 | class Q_QML_PRIVATE_EXPORT QQmlProxyMetaObject : public QDynamicMetaObjectData |
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| 29 | { |
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| 30 | public: |
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| 31 | struct ProxyData { |
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| 32 | typedef QObject *(*CreateFunc)(QObject *); |
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| 33 | QMetaObject *metaObject; |
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| 34 | CreateFunc createFunc; |
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| 35 | int propertyOffset; |
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| 36 | int methodOffset; |
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| 37 | }; |
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| 38 | |
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| 39 | QQmlProxyMetaObject(QObject *, QList<ProxyData> *); |
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| 40 | ~QQmlProxyMetaObject(); |
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| 41 | |
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| 42 | static constexpr int extensionObjectId(int id) noexcept |
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| 43 | { |
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| 44 | Q_ASSERT(id >= 0); |
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| 45 | Q_ASSERT(id <= MaxExtensionCount); // MaxExtensionCount is a valid index |
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| 46 | return ExtensionObjectId | id; |
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| 47 | } |
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| 48 | |
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| 49 | protected: |
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| 50 | int metaCall(QObject *o, QMetaObject::Call _c, int _id, void **_a) override; |
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| 51 | QMetaObject *toDynamicMetaObject(QObject *) override; |
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| 52 | |
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| 53 | private: |
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| 54 | QObject *getProxy(int index); |
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| 55 | |
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| 56 | QList<ProxyData> *metaObjects; |
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| 57 | QObject **proxies; |
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| 58 | |
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| 59 | QDynamicMetaObjectData *parent; |
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| 60 | QMetaObject *metaObject; |
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| 61 | QObject *object; |
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| 62 | |
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| 63 | // ExtensionObjectId acts as a flag for whether we should interpret a |
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| 64 | // QMetaObject::CustomCall as a call to fetch the extension object (see |
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| 65 | // QQmlProxyMetaObject::metaCall()). MaxExtensionCount is a limit on how |
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| 66 | // many extensions we can query via such mechanism |
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| 67 | enum : int { |
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| 68 | MaxExtensionCount = 127, // magic number so that low bits are all '1' |
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| 69 | ExtensionObjectId = ~MaxExtensionCount, |
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| 70 | }; |
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| 71 | }; |
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| 72 | |
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| 73 | QT_END_NAMESPACE |
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| 74 | |
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| 75 | #endif // QQMLPROXYMETAOBJECT_P_H |
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| 76 | |
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| 77 | |
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