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Diffstat (limited to 'src/declarative/util/qmlopenmetaobject.cpp')
| -rw-r--r-- | src/declarative/util/qmlopenmetaobject.cpp | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/declarative/util/qmlopenmetaobject.cpp b/src/declarative/util/qmlopenmetaobject.cpp new file mode 100644 index 0000000..09d71bd --- /dev/null +++ b/src/declarative/util/qmlopenmetaobject.cpp @@ -0,0 +1,188 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmlopenmetaobject.h" +#include <QDebug> + + +QT_BEGIN_NAMESPACE +QmlOpenMetaObject::QmlOpenMetaObject(QObject *obj, bool automatic) +: autoCreate(automatic), parent(0), mem(0), _object(obj) +{ + mob.setSuperClass(obj->metaObject()); + mob.setFlags(QMetaObjectBuilder::DynamicMetaObject); + + QObjectPrivate *op = QObjectPrivate::get(obj); + if(op->metaObject) + mob.setSuperClass(op->metaObject); + + mem = mob.toMetaObject(); + *static_cast<QMetaObject *>(this) = *mem; + op->metaObject = this; + _propertyOffset = propertyOffset(); + _signalOffset = methodOffset(); +} + +QmlOpenMetaObject::~QmlOpenMetaObject() +{ + if(parent) + delete parent; + qFree(mem); +} + +int QmlOpenMetaObject::metaCall(QMetaObject::Call c, int id, void **a) +{ + if(( c == QMetaObject::ReadProperty || c == QMetaObject::WriteProperty) + && id >= _propertyOffset) { + int propId = id - _propertyOffset; + if(c == QMetaObject::ReadProperty) { + propertyRead(propId); + *reinterpret_cast<QVariant *>(a[0]) = data[propId]; + } else if(c == QMetaObject::WriteProperty) { + if(data[propId] != *reinterpret_cast<QVariant *>(a[0])) { + propertyWrite(propId); + data[propId] = *reinterpret_cast<QVariant *>(a[0]); + activate(_object, _signalOffset + propId, 0); + } + } + return -1; + } else { + if(parent) + return parent->metaCall(c, id, a); + else + return _object->qt_metacall(c, id, a); + } +} + +QVariant QmlOpenMetaObject::value(int id) const +{ + Q_ASSERT(id >= 0 && id < data.count()); + return data.at(id); +} + +void QmlOpenMetaObject::setValue(int id, const QVariant &value) +{ + Q_ASSERT(id >= 0 && id < data.count()); + data[id] = value; + activate(_object, id + _signalOffset, 0); +} + +QVariant QmlOpenMetaObject::value(const QByteArray &name) const +{ + QHash<QByteArray, int>::ConstIterator iter = names.find(name); + if(iter == names.end()) + return QVariant(); + + return data.at(*iter); +} + +void QmlOpenMetaObject::setValue(const QByteArray &name, const QVariant &val) +{ + QHash<QByteArray, int>::ConstIterator iter = names.find(name); + + int id = -1; + if(iter == names.end()) { + id = doCreateProperty(name.constData()) - _propertyOffset; + } else { + id = *iter; + } + + if(data[id] == val) + return; + + data[id] = val; + activate(_object, id + _signalOffset, 0); +} + +int QmlOpenMetaObject::createProperty(const char *name, const char *) +{ + if(autoCreate) + return doCreateProperty(name); + else + return -1; +} + +int QmlOpenMetaObject::doCreateProperty(const char *name) +{ + int id = mob.propertyCount(); + mob.addSignal("__" + QByteArray::number(id) + "()"); + QMetaPropertyBuilder build = mob.addProperty(name, "QVariant", id); + build.setDynamic(true); + data << propertyCreated(id, build); + qFree(mem); + mem = mob.toMetaObject(); + *static_cast<QMetaObject *>(this) = *mem; + names.insert(name, id); + + return _propertyOffset + id; +} + +void QmlOpenMetaObject::propertyRead(int) +{ +} + +void QmlOpenMetaObject::propertyWrite(int) +{ +} + +QVariant QmlOpenMetaObject::propertyCreated(int, QMetaPropertyBuilder &) +{ + return QVariant(); +} + +int QmlOpenMetaObject::count() const +{ + return data.count(); +} + +QByteArray QmlOpenMetaObject::name(int idx) const +{ + Q_ASSERT(idx >= 0 && idx < data.count()); + + return mob.property(idx).name(); +} + +QObject *QmlOpenMetaObject::object() const +{ + return _object; +} + +QT_END_NAMESPACE |