1 files changed, 355 insertions, 0 deletions
diff --git a/src/declarative/util/qmlopenmetaobject.cpp b/src/declarative/util/qmlopenmetaobject.cpp
new file mode 100644
index 0000000..1be81de
--- /dev/null
+++ b/src/declarative/util/qmlopenmetaobject.cpp
@@ -0,0 +1,355 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 "qmlopenmetaobject_p.h"
+#include "qmlpropertycache_p.h"
+#include "qmldeclarativedata_p.h"
+#include <qmetaobjectbuilder_p.h>
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+
+class QmlOpenMetaObjectTypePrivate
+{
+public:
+    QmlOpenMetaObjectTypePrivate() : mem(0), cache(0), engine(0) {}
+
+    void init(const QMetaObject *metaObj);
+
+    int propertyOffset;
+    int signalOffset;
+    QHash<QByteArray, int> names;
+    QMetaObjectBuilder mob;
+    QMetaObject *mem;
+    QmlPropertyCache *cache;
+    QmlEngine *engine;
+    QSet<QmlOpenMetaObject*> referers;
+};
+
+QmlOpenMetaObjectType::QmlOpenMetaObjectType(const QMetaObject *base, QmlEngine *engine)
+    : d(new QmlOpenMetaObjectTypePrivate)
+{
+    d->engine = engine;
+    d->init(base);
+}
+
+QmlOpenMetaObjectType::~QmlOpenMetaObjectType()
+{
+    if (d->mem)
+        qFree(d->mem);
+    if (d->cache)
+        d->cache->release();
+    delete d;
+}
+
+
+int QmlOpenMetaObjectType::propertyOffset() const
+{
+    return d->propertyOffset;
+}
+
+int QmlOpenMetaObjectType::signalOffset() const
+{
+    return d->signalOffset;
+}
+
+int QmlOpenMetaObjectType::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<QmlOpenMetaObject*>::iterator it = d->referers.begin();
+    while (it != d->referers.end()) {
+        QmlOpenMetaObject *omo = *it;
+        *static_cast<QMetaObject *>(omo) = *d->mem;
+        if (d->cache)
+            d->cache->update(d->engine, omo);
+        ++it;
+    }
+
+    return d->propertyOffset + id;
+}
+
+void QmlOpenMetaObjectType::propertyCreated(int id, QMetaPropertyBuilder &builder)
+{
+    if (d->referers.count())
+        (*d->referers.begin())->propertyCreated(id, builder);
+}
+
+void QmlOpenMetaObjectTypePrivate::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 QmlOpenMetaObjectPrivate
+{
+public:
+    QmlOpenMetaObjectPrivate(QmlOpenMetaObject *_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;
+    QmlOpenMetaObject *q;
+    QAbstractDynamicMetaObject *parent;
+    QList<QPair<QVariant, bool> > data;
+    QObject *object;
+    QmlOpenMetaObjectType *type;
+    bool cacheProperties;
+};
+
+QmlOpenMetaObject::QmlOpenMetaObject(QObject *obj, bool automatic)
+: d(new QmlOpenMetaObjectPrivate(this))
+{
+    d->autoCreate = automatic;
+    d->object = obj;
+
+    d->type = new QmlOpenMetaObjectType(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;
+}
+
+QmlOpenMetaObject::QmlOpenMetaObject(QObject *obj, QmlOpenMetaObjectType *type, bool automatic)
+: d(new QmlOpenMetaObjectPrivate(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;
+}
+
+QmlOpenMetaObject::~QmlOpenMetaObject()
+{
+    if (d->parent)
+        delete d->parent;
+    d->type->d->referers.remove(this);
+    d->type->release();
+    delete d;
+}
+
+QmlOpenMetaObjectType *QmlOpenMetaObject::type() const
+{
+    return d->type;
+}
+
+int QmlOpenMetaObject::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 *QmlOpenMetaObject::parent() const
+{
+    return d->parent;
+}
+
+QVariant QmlOpenMetaObject::value(int id) const
+{
+    return d->getData(id);
+}
+
+void QmlOpenMetaObject::setValue(int id, const QVariant &value)
+{
+    d->writeData(id, value);
+    activate(d->object, id + d->type->d->signalOffset, 0);
+}
+
+QVariant QmlOpenMetaObject::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 &QmlOpenMetaObject::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 QmlOpenMetaObject::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 QmlOpenMetaObject::setCached(bool c)
+{
+    if (c == d->cacheProperties || !d->type->d->engine)
+        return;
+
+    d->cacheProperties = c;
+
+    QmlDeclarativeData *qmldata = QmlDeclarativeData::get(d->object, true);
+    if (d->cacheProperties) {
+        if (!d->type->d->cache)
+            d->type->d->cache = QmlPropertyCache::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 QmlOpenMetaObject::createProperty(const char *name, const char *)
+{
+    if (d->autoCreate)
+        return d->type->createProperty(name);
+    else
+        return -1;
+}
+
+void QmlOpenMetaObject::propertyRead(int)
+{
+}
+
+void QmlOpenMetaObject::propertyWrite(int)
+{
+}
+
+void QmlOpenMetaObject::propertyCreated(int, QMetaPropertyBuilder &)
+{
+}
+
+QVariant QmlOpenMetaObject::initialValue(int)
+{
+    return QVariant();
+}
+
+int QmlOpenMetaObject::count() const
+{
+    return d->type->d->names.count();
+}
+
+QByteArray QmlOpenMetaObject::name(int idx) const
+{
+    Q_ASSERT(idx >= 0 && idx < d->type->d->names.count());
+
+    return d->type->d->mob.property(idx).name();
+}
+
+QObject *QmlOpenMetaObject::object() const
+{
+    return d->object;
+}
+
+QT_END_NAMESPACE