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Diffstat (limited to 'src/qtquick1/util/qdeclarativeopenmetaobject.cpp')
| -rw-r--r-- | src/qtquick1/util/qdeclarativeopenmetaobject.cpp | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/src/qtquick1/util/qdeclarativeopenmetaobject.cpp b/src/qtquick1/util/qdeclarativeopenmetaobject.cpp new file mode 100644 index 0000000000..b4864a9a7c --- /dev/null +++ b/src/qtquick1/util/qdeclarativeopenmetaobject.cpp @@ -0,0 +1,384 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "QtQuick1/private/qdeclarativeopenmetaobject_p.h" +#include "QtDeclarative/private/qdeclarativepropertycache_p.h" +#include "QtDeclarative/private/qdeclarativedata_p.h" +#include <QtDeclarative/private/qmetaobjectbuilder_p.h> +#include <qdebug.h> + +QT_BEGIN_NAMESPACE + + + + +class QDeclarative1OpenMetaObjectTypePrivate +{ +public: + QDeclarative1OpenMetaObjectTypePrivate() : mem(0), cache(0), engine(0) {} + + void init(const QMetaObject *metaObj); + + int propertyOffset; + int signalOffset; + QHash<QByteArray, int> names; + QMetaObjectBuilder mob; + QMetaObject *mem; + QDeclarativePropertyCache *cache; + QDeclarativeEngine *engine; + QSet<QDeclarative1OpenMetaObject*> referers; +}; + +QDeclarative1OpenMetaObjectType::QDeclarative1OpenMetaObjectType(const QMetaObject *base, QDeclarativeEngine *engine) + : d(new QDeclarative1OpenMetaObjectTypePrivate) +{ + d->engine = engine; + d->init(base); +} + +QDeclarative1OpenMetaObjectType::~QDeclarative1OpenMetaObjectType() +{ + if (d->mem) + qFree(d->mem); + if (d->cache) + d->cache->release(); + delete d; +} + + +int QDeclarative1OpenMetaObjectType::propertyOffset() const +{ + return d->propertyOffset; +} + +int QDeclarative1OpenMetaObjectType::signalOffset() const +{ + return d->signalOffset; +} + +int QDeclarative1OpenMetaObjectType::createProperty(const QByteArray &name) +{ + int id = d->mob.propertyCount(); + d->mob.addSignal("__" + QByteArray::number(id) + "()"); + QMetaPropertyBuilder build = d->mob.addProperty(name, "QVariant", id); + propertyCreated(id, build); + qFree(d->mem); + d->mem = d->mob.toMetaObject(); + d->names.insert(name, id); + QSet<QDeclarative1OpenMetaObject*>::iterator it = d->referers.begin(); + while (it != d->referers.end()) { + QDeclarative1OpenMetaObject *omo = *it; + *static_cast<QMetaObject *>(omo) = *d->mem; + if (d->cache) + d->cache->update(d->engine, omo); + ++it; + } + + return d->propertyOffset + id; +} + +void QDeclarative1OpenMetaObjectType::propertyCreated(int id, QMetaPropertyBuilder &builder) +{ + if (d->referers.count()) + (*d->referers.begin())->propertyCreated(id, builder); +} + +void QDeclarative1OpenMetaObjectTypePrivate::init(const QMetaObject *metaObj) +{ + if (!mem) { + mob.setSuperClass(metaObj); + mob.setClassName(metaObj->className()); + mob.setFlags(QMetaObjectBuilder::DynamicMetaObject); + + mem = mob.toMetaObject(); + + propertyOffset = mem->propertyOffset(); + signalOffset = mem->methodOffset(); + } +} + +//---------------------------------------------------------------------------- + +class QDeclarative1OpenMetaObjectPrivate +{ +public: + QDeclarative1OpenMetaObjectPrivate(QDeclarative1OpenMetaObject *_q) + : q(_q), parent(0), type(0), cacheProperties(false) {} + + inline QVariant &getData(int idx) { + while (data.count() <= idx) + data << QPair<QVariant, bool>(QVariant(), false); + QPair<QVariant, bool> &prop = data[idx]; + if (!prop.second) { + prop.first = q->initialValue(idx); + prop.second = true; + } + return prop.first; + } + + inline void writeData(int idx, const QVariant &value) { + while (data.count() <= idx) + data << QPair<QVariant, bool>(QVariant(), false); + QPair<QVariant, bool> &prop = data[idx]; + prop.first = value; + prop.second = true; + } + + inline bool hasData(int idx) const { + if (idx >= data.count()) + return false; + return data[idx].second; + } + + bool autoCreate; + QDeclarative1OpenMetaObject *q; + QAbstractDynamicMetaObject *parent; + QList<QPair<QVariant, bool> > data; + QObject *object; + QDeclarative1OpenMetaObjectType *type; + bool cacheProperties; +}; + +QDeclarative1OpenMetaObject::QDeclarative1OpenMetaObject(QObject *obj, bool automatic) +: d(new QDeclarative1OpenMetaObjectPrivate(this)) +{ + d->autoCreate = automatic; + d->object = obj; + + d->type = new QDeclarative1OpenMetaObjectType(obj->metaObject(), 0); + d->type->d->referers.insert(this); + + QObjectPrivate *op = QObjectPrivate::get(obj); + d->parent = static_cast<QAbstractDynamicMetaObject *>(op->metaObject); + *static_cast<QMetaObject *>(this) = *d->type->d->mem; + op->metaObject = this; +} + +QDeclarative1OpenMetaObject::QDeclarative1OpenMetaObject(QObject *obj, QDeclarative1OpenMetaObjectType *type, bool automatic) +: d(new QDeclarative1OpenMetaObjectPrivate(this)) +{ + d->autoCreate = automatic; + d->object = obj; + + d->type = type; + d->type->addref(); + d->type->d->referers.insert(this); + + QObjectPrivate *op = QObjectPrivate::get(obj); + d->parent = static_cast<QAbstractDynamicMetaObject *>(op->metaObject); + *static_cast<QMetaObject *>(this) = *d->type->d->mem; + op->metaObject = this; +} + +QDeclarative1OpenMetaObject::~QDeclarative1OpenMetaObject() +{ + if (d->parent) + delete d->parent; + d->type->d->referers.remove(this); + d->type->release(); + delete d; +} + +QDeclarative1OpenMetaObjectType *QDeclarative1OpenMetaObject::type() const +{ + return d->type; +} + +int QDeclarative1OpenMetaObject::metaCall(QMetaObject::Call c, int id, void **a) +{ + if (( c == QMetaObject::ReadProperty || c == QMetaObject::WriteProperty) + && id >= d->type->d->propertyOffset) { + int propId = id - d->type->d->propertyOffset; + if (c == QMetaObject::ReadProperty) { + propertyRead(propId); + *reinterpret_cast<QVariant *>(a[0]) = d->getData(propId); + } else if (c == QMetaObject::WriteProperty) { + if (propId <= d->data.count() || d->data[propId].first != *reinterpret_cast<QVariant *>(a[0])) { + propertyWrite(propId); + d->writeData(propId, *reinterpret_cast<QVariant *>(a[0])); + propertyWritten(propId); + activate(d->object, d->type->d->signalOffset + propId, 0); + } + } + return -1; + } else { + if (d->parent) + return d->parent->metaCall(c, id, a); + else + return d->object->qt_metacall(c, id, a); + } +} + +QAbstractDynamicMetaObject *QDeclarative1OpenMetaObject::parent() const +{ + return d->parent; +} + +QVariant QDeclarative1OpenMetaObject::value(int id) const +{ + return d->getData(id); +} + +void QDeclarative1OpenMetaObject::setValue(int id, const QVariant &value) +{ + d->writeData(id, value); + activate(d->object, id + d->type->d->signalOffset, 0); +} + +QVariant QDeclarative1OpenMetaObject::value(const QByteArray &name) const +{ + QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.find(name); + if (iter == d->type->d->names.end()) + return QVariant(); + + return d->getData(*iter); +} + +QVariant &QDeclarative1OpenMetaObject::operator[](const QByteArray &name) +{ + QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.find(name); + Q_ASSERT(iter != d->type->d->names.end()); + + return d->getData(*iter); +} + +QVariant &QDeclarative1OpenMetaObject::operator[](int id) +{ + return d->getData(id); +} + +void QDeclarative1OpenMetaObject::setValue(const QByteArray &name, const QVariant &val) +{ + QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.find(name); + + int id = -1; + if (iter == d->type->d->names.end()) { + id = createProperty(name.constData(), "") - d->type->d->propertyOffset; + } else { + id = *iter; + } + + if (id >= 0) { + QVariant &dataVal = d->getData(id); + if (dataVal == val) + return; + + dataVal = val; + activate(d->object, id + d->type->d->signalOffset, 0); + } +} + +// returns true if this value has been initialized by a call to either value() or setValue() +bool QDeclarative1OpenMetaObject::hasValue(int id) const +{ + return d->hasData(id); +} + +void QDeclarative1OpenMetaObject::setCached(bool c) +{ + if (c == d->cacheProperties || !d->type->d->engine) + return; + + d->cacheProperties = c; + + QDeclarativeData *qmldata = QDeclarativeData::get(d->object, true); + if (d->cacheProperties) { + if (!d->type->d->cache) + d->type->d->cache = new QDeclarativePropertyCache(d->type->d->engine, this); + qmldata->propertyCache = d->type->d->cache; + d->type->d->cache->addref(); + } else { + if (d->type->d->cache) + d->type->d->cache->release(); + qmldata->propertyCache = 0; + } +} + + +int QDeclarative1OpenMetaObject::createProperty(const char *name, const char *) +{ + if (d->autoCreate) + return d->type->createProperty(name); + else + return -1; +} + +void QDeclarative1OpenMetaObject::propertyRead(int) +{ +} + +void QDeclarative1OpenMetaObject::propertyWrite(int) +{ +} + +void QDeclarative1OpenMetaObject::propertyWritten(int) +{ +} + +void QDeclarative1OpenMetaObject::propertyCreated(int, QMetaPropertyBuilder &) +{ +} + +QVariant QDeclarative1OpenMetaObject::initialValue(int) +{ + return QVariant(); +} + +int QDeclarative1OpenMetaObject::count() const +{ + return d->type->d->names.count(); +} + +QByteArray QDeclarative1OpenMetaObject::name(int idx) const +{ + Q_ASSERT(idx >= 0 && idx < d->type->d->names.count()); + + return d->type->d->mob.property(idx).name(); +} + +QObject *QDeclarative1OpenMetaObject::object() const +{ + return d->object; +} + + + +QT_END_NAMESPACE |