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Diffstat (limited to 'src/declarative/util/qdeclarativeopenmetaobject.cpp')
| -rw-r--r-- | src/declarative/util/qdeclarativeopenmetaobject.cpp | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/src/declarative/util/qdeclarativeopenmetaobject.cpp b/src/declarative/util/qdeclarativeopenmetaobject.cpp new file mode 100644 index 0000000..8c23354 --- /dev/null +++ b/src/declarative/util/qdeclarativeopenmetaobject.cpp @@ -0,0 +1,355 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdeclarativeopenmetaobject_p.h" +#include "qdeclarativepropertycache_p.h" +#include "qdeclarativedeclarativedata_p.h" +#include <qmetaobjectbuilder_p.h> +#include <qdebug.h> + +QT_BEGIN_NAMESPACE + + +class QDeclarativeOpenMetaObjectTypePrivate +{ +public: + QDeclarativeOpenMetaObjectTypePrivate() : 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<QDeclarativeOpenMetaObject*> referers; +}; + +QDeclarativeOpenMetaObjectType::QDeclarativeOpenMetaObjectType(const QMetaObject *base, QDeclarativeEngine *engine) + : d(new QDeclarativeOpenMetaObjectTypePrivate) +{ + d->engine = engine; + d->init(base); +} + +QDeclarativeOpenMetaObjectType::~QDeclarativeOpenMetaObjectType() +{ + if (d->mem) + qFree(d->mem); + if (d->cache) + d->cache->release(); + delete d; +} + + +int QDeclarativeOpenMetaObjectType::propertyOffset() const +{ + return d->propertyOffset; +} + +int QDeclarativeOpenMetaObjectType::signalOffset() const +{ + return d->signalOffset; +} + +int QDeclarativeOpenMetaObjectType::createProperty(const QByteArray &name) +{ + int id = d->mob.propertyCount(); + d->mob.addSignal("__" + QByteArray::number(id) + "()"); + QMetaPropertyBuilder build = d->mob.addProperty(name, "QVariant", id); + build.setDynamic(true); + propertyCreated(id, build); + qFree(d->mem); + d->mem = d->mob.toMetaObject(); + d->names.insert(name, id); + QSet<QDeclarativeOpenMetaObject*>::iterator it = d->referers.begin(); + while (it != d->referers.end()) { + QDeclarativeOpenMetaObject *omo = *it; + *static_cast<QMetaObject *>(omo) = *d->mem; + if (d->cache) + d->cache->update(d->engine, omo); + ++it; + } + + return d->propertyOffset + id; +} + +void QDeclarativeOpenMetaObjectType::propertyCreated(int id, QMetaPropertyBuilder &builder) +{ + if (d->referers.count()) + (*d->referers.begin())->propertyCreated(id, builder); +} + +void QDeclarativeOpenMetaObjectTypePrivate::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 QDeclarativeOpenMetaObjectPrivate +{ +public: + QDeclarativeOpenMetaObjectPrivate(QDeclarativeOpenMetaObject *_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; + } + + bool autoCreate; + QDeclarativeOpenMetaObject *q; + QAbstractDynamicMetaObject *parent; + QList<QPair<QVariant, bool> > data; + QObject *object; + QDeclarativeOpenMetaObjectType *type; + bool cacheProperties; +}; + +QDeclarativeOpenMetaObject::QDeclarativeOpenMetaObject(QObject *obj, bool automatic) +: d(new QDeclarativeOpenMetaObjectPrivate(this)) +{ + d->autoCreate = automatic; + d->object = obj; + + d->type = new QDeclarativeOpenMetaObjectType(obj->metaObject(), 0); + d->type->d->referers.insert(this); + + QObjectPrivate *op = QObjectPrivate::get(obj); + *static_cast<QMetaObject *>(this) = *d->type->d->mem; + op->metaObject = this; +} + +QDeclarativeOpenMetaObject::QDeclarativeOpenMetaObject(QObject *obj, QDeclarativeOpenMetaObjectType *type, bool automatic) +: d(new QDeclarativeOpenMetaObjectPrivate(this)) +{ + d->autoCreate = automatic; + d->object = obj; + + d->type = type; + d->type->addref(); + d->type->d->referers.insert(this); + + QObjectPrivate *op = QObjectPrivate::get(obj); + *static_cast<QMetaObject *>(this) = *d->type->d->mem; + op->metaObject = this; +} + +QDeclarativeOpenMetaObject::~QDeclarativeOpenMetaObject() +{ + if (d->parent) + delete d->parent; + d->type->d->referers.remove(this); + d->type->release(); + delete d; +} + +QDeclarativeOpenMetaObjectType *QDeclarativeOpenMetaObject::type() const +{ + return d->type; +} + +int QDeclarativeOpenMetaObject::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 (d->data[propId].first != *reinterpret_cast<QVariant *>(a[0])) { + propertyWrite(propId); + d->writeData(propId, *reinterpret_cast<QVariant *>(a[0])); + 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 *QDeclarativeOpenMetaObject::parent() const +{ + return d->parent; +} + +QVariant QDeclarativeOpenMetaObject::value(int id) const +{ + return d->getData(id); +} + +void QDeclarativeOpenMetaObject::setValue(int id, const QVariant &value) +{ + d->writeData(id, value); + activate(d->object, id + d->type->d->signalOffset, 0); +} + +QVariant QDeclarativeOpenMetaObject::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 &QDeclarativeOpenMetaObject::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); +} + +void QDeclarativeOpenMetaObject::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 = d->type->createProperty(name.constData()) - d->type->d->propertyOffset; + } else { + id = *iter; + } + + QVariant &dataVal = d->getData(id); + if (dataVal == val) + return; + + dataVal = val; + activate(d->object, id + d->type->d->signalOffset, 0); +} + +void QDeclarativeOpenMetaObject::setCached(bool c) +{ + if (c == d->cacheProperties || !d->type->d->engine) + return; + + d->cacheProperties = c; + + QDeclarativeDeclarativeData *qmldata = QDeclarativeDeclarativeData::get(d->object, true); + if (d->cacheProperties) { + if (!d->type->d->cache) + d->type->d->cache = QDeclarativePropertyCache::create(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 QDeclarativeOpenMetaObject::createProperty(const char *name, const char *) +{ + if (d->autoCreate) + return d->type->createProperty(name); + else + return -1; +} + +void QDeclarativeOpenMetaObject::propertyRead(int) +{ +} + +void QDeclarativeOpenMetaObject::propertyWrite(int) +{ +} + +void QDeclarativeOpenMetaObject::propertyCreated(int, QMetaPropertyBuilder &) +{ +} + +QVariant QDeclarativeOpenMetaObject::initialValue(int) +{ + return QVariant(); +} + +int QDeclarativeOpenMetaObject::count() const +{ + return d->type->d->names.count(); +} + +QByteArray QDeclarativeOpenMetaObject::name(int idx) const +{ + Q_ASSERT(idx >= 0 && idx < d->type->d->names.count()); + + return d->type->d->mob.property(idx).name(); +} + +QObject *QDeclarativeOpenMetaObject::object() const +{ + return d->object; +} + +QT_END_NAMESPACE |