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Diffstat (limited to 'src/declarative/qml/qdeclarativepropertycache_p.h')
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diff --git a/src/declarative/qml/qdeclarativepropertycache_p.h b/src/declarative/qml/qdeclarativepropertycache_p.h new file mode 100644 index 0000000000..eeeff1aea1 --- /dev/null +++ b/src/declarative/qml/qdeclarativepropertycache_p.h @@ -0,0 +1,240 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QDECLARATIVEPROPERTYCACHE_P_H +#define QDECLARATIVEPROPERTYCACHE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "private/qdeclarativerefcount_p.h" +#include "private/qdeclarativecleanup_p.h" +#include "private/qdeclarativenotifier_p.h" + +#include <QtCore/qvector.h> + +#include <QtScript/private/qscriptdeclarativeclass_p.h> +QT_BEGIN_NAMESPACE + +class QDeclarativeEngine; +class QMetaProperty; + +class Q_AUTOTEST_EXPORT QDeclarativePropertyCache : public QDeclarativeRefCount, public QDeclarativeCleanup +{ +public: + QDeclarativePropertyCache(QDeclarativeEngine *); + QDeclarativePropertyCache(QDeclarativeEngine *, const QMetaObject *); + virtual ~QDeclarativePropertyCache(); + + struct Data { + inline Data(); + inline bool operator==(const Data &); + + enum Flag { + NoFlags = 0x00000000, + + // Can apply to all properties, except IsFunction + IsConstant = 0x00000001, + IsWritable = 0x00000002, + IsResettable = 0x00000004, + IsAlias = 0x00000008, + + // These are mutualy exclusive + IsFunction = 0x00000010, + IsQObjectDerived = 0x00000020, + IsEnumType = 0x00000040, + IsQList = 0x00000080, + IsQmlBinding = 0x00000100, + IsQScriptValue = 0x00000200, + + // Apply only to IsFunctions + IsVMEFunction = 0x00000400, + HasArguments = 0x00000800, + IsSignal = 0x00001000, + IsVMESignal = 0x00002000 + }; + Q_DECLARE_FLAGS(Flags, Flag) + + bool isValid() const { return coreIndex != -1; } + + Flags flags; + int propType; + int coreIndex; + union { + int notifyIndex; // When !IsFunction + int relatedIndex; // When IsFunction + }; + uint overrideIndexIsProperty : 1; + int overrideIndex : 31; + int revision; + int metaObjectOffset; + + static Flags flagsForProperty(const QMetaProperty &, QDeclarativeEngine *engine = 0); + void load(const QMetaProperty &, QDeclarativeEngine *engine = 0); + void load(const QMetaMethod &); + QString name(QObject *); + QString name(const QMetaObject *); + }; + + struct ValueTypeData { + inline ValueTypeData(); + inline bool operator==(const ValueTypeData &); + Data::Flags flags; // flags of the access property on the value type proxy object + int valueTypeCoreIdx; // The prop index of the access property on the value type proxy object + int valueTypePropType; // The QVariant::Type of access property on the value type proxy object + }; + + void update(QDeclarativeEngine *, const QMetaObject *); + + QDeclarativePropertyCache *copy() const; + void append(QDeclarativeEngine *, const QMetaObject *, Data::Flag propertyFlags = Data::NoFlags, + Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags); + void append(QDeclarativeEngine *, const QMetaObject *, int revision, Data::Flag propertyFlags = Data::NoFlags, + Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags); + + static Data create(const QMetaObject *, const QString &); + + inline Data *property(const QScriptDeclarativeClass::Identifier &id) const; + Data *property(const QString &) const; + Data *property(int) const; + Data *method(int) const; + QStringList propertyNames() const; + + inline Data *overrideData(Data *) const; + inline bool isAllowedInRevision(Data *) const; + + inline QDeclarativeEngine *qmlEngine() const; + static Data *property(QDeclarativeEngine *, QObject *, const QScriptDeclarativeClass::Identifier &, Data &); + static Data *property(QDeclarativeEngine *, QObject *, const QString &, Data &); + +protected: + virtual void clear(); + +private: + friend class QDeclarativeEnginePrivate; + + struct RData : public Data, public QDeclarativeRefCount { + QScriptDeclarativeClass::PersistentIdentifier identifier; + }; + + typedef QVector<RData *> IndexCache; + typedef QHash<QString, RData *> StringCache; + typedef QHash<QScriptDeclarativeClass::Identifier, RData *> IdentifierCache; + typedef QVector<int> AllowedRevisionCache; + + void updateRecur(QDeclarativeEngine *, const QMetaObject *); + + QDeclarativeEngine *engine; + IndexCache indexCache; + IndexCache methodIndexCache; + StringCache stringCache; + IdentifierCache identifierCache; + AllowedRevisionCache allowedRevisionCache; +}; +Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyCache::Data::Flags); + +QDeclarativePropertyCache::Data::Data() +: flags(0), propType(0), coreIndex(-1), notifyIndex(-1), overrideIndexIsProperty(false), overrideIndex(-1), + revision(0), metaObjectOffset(-1) +{ +} + +bool QDeclarativePropertyCache::Data::operator==(const QDeclarativePropertyCache::Data &other) +{ + return flags == other.flags && + propType == other.propType && + coreIndex == other.coreIndex && + notifyIndex == other.notifyIndex && + revision == other.revision; +} + +QDeclarativePropertyCache::Data * +QDeclarativePropertyCache::overrideData(Data *data) const +{ + if (data->overrideIndex < 0) + return 0; + + if (data->overrideIndexIsProperty) + return indexCache.at(data->overrideIndex); + else + return methodIndexCache.at(data->overrideIndex); +} + +QDeclarativePropertyCache::Data * +QDeclarativePropertyCache::property(const QScriptDeclarativeClass::Identifier &id) const +{ + return identifierCache.value(id); +} + +QDeclarativePropertyCache::ValueTypeData::ValueTypeData() +: flags(QDeclarativePropertyCache::Data::NoFlags), valueTypeCoreIdx(-1), valueTypePropType(0) +{ +} + +bool QDeclarativePropertyCache::ValueTypeData::operator==(const ValueTypeData &o) +{ + return flags == o.flags && + valueTypeCoreIdx == o.valueTypeCoreIdx && + valueTypePropType == o.valueTypePropType; +} + +bool QDeclarativePropertyCache::isAllowedInRevision(Data *data) const +{ + return (data->metaObjectOffset == -1 && data->revision == 0) || + (allowedRevisionCache[data->metaObjectOffset] >= data->revision); +} + +QDeclarativeEngine *QDeclarativePropertyCache::qmlEngine() const +{ + return engine; +} + +QT_END_NAMESPACE + +#endif // QDECLARATIVEPROPERTYCACHE_P_H |