Merge branch 'master' into lighthouse-master

30 files changed, 822 insertions, 385 deletions

diff --git a/src/declarative/qml/qdeclarativebinding.cpp b/src/declarative/qml/qdeclarativebinding.cpp
index cb6ad8c..a7fbf44 100644
--- a/src/declarative/qml/qdeclarativebinding.cpp
+++ b/src/declarative/qml/qdeclarativebinding.cpp
@@ -55,6 +55,158 @@
 
 QT_BEGIN_NAMESPACE
 
+QDeclarativeAbstractBinding::QDeclarativeAbstractBinding()
+: m_object(0), m_propertyIndex(-1), m_mePtr(0), m_prevBinding(0), m_nextBinding(0)
+{
+}
+
+QDeclarativeAbstractBinding::~QDeclarativeAbstractBinding()
+{
+    Q_ASSERT(m_prevBinding == 0);
+    Q_ASSERT(m_mePtr == 0);
+}
+
+/*!
+Destroy the binding.  Use this instead of calling delete.
+
+Bindings are free to implement their own memory management, so the delete operator is not 
+necessarily safe.  The default implementation clears the binding, removes it from the object
+and calls delete.
+*/
+void QDeclarativeAbstractBinding::destroy()
+{
+    removeFromObject();
+    clear();
+
+    delete this;
+}
+
+/*!
+Add this binding to \a object.
+
+This transfers ownership of the binding to the object, marks the object's property as
+being bound.  
+
+However, it does not enable the binding itself or call update() on it.
+*/
+void QDeclarativeAbstractBinding::addToObject(QObject *object, int index)
+{
+    Q_ASSERT(object);
+
+    if (m_object == object && m_propertyIndex == index)
+        return;
+
+    removeFromObject();
+
+    Q_ASSERT(!m_prevBinding);
+
+    m_object = object;
+    m_propertyIndex = index;
+
+    QDeclarativeData *data = QDeclarativeData::get(object, true);
+
+    if (index & 0xFF000000) {
+        // Value type
+
+        int coreIndex = index & 0xFFFFFF;
+
+        // Find the value type proxy (if there is one)
+        QDeclarativeValueTypeProxyBinding *proxy = 0;
+        if (data->hasBindingBit(coreIndex)) {
+            QDeclarativeAbstractBinding *b = data->bindings;
+            while (b && b->propertyIndex() != coreIndex)
+                b = b->m_nextBinding;
+            Q_ASSERT(b && b->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy);
+            proxy = static_cast<QDeclarativeValueTypeProxyBinding *>(b);
+        }
+
+        if (!proxy) {
+            proxy = new QDeclarativeValueTypeProxyBinding(object, coreIndex);
+            proxy->addToObject(object, coreIndex);
+        }
+
+        m_nextBinding = proxy->m_bindings;
+        if (m_nextBinding) m_nextBinding->m_prevBinding = &m_nextBinding;
+        m_prevBinding = &proxy->m_bindings;
+        proxy->m_bindings = this;
+
+    } else {
+        m_nextBinding = data->bindings;
+        if (m_nextBinding) m_nextBinding->m_prevBinding = &m_nextBinding;
+        m_prevBinding = &data->bindings;
+        data->bindings = this;
+
+        data->setBindingBit(m_object, index);
+    }
+}
+
+/*!
+Remove the binding from the object.
+*/
+void QDeclarativeAbstractBinding::removeFromObject()
+{
+    if (m_prevBinding) {
+        int index = propertyIndex();
+
+        *m_prevBinding = m_nextBinding;
+        if (m_nextBinding) m_nextBinding->m_prevBinding = m_prevBinding;
+        m_prevBinding = 0;
+        m_nextBinding = 0;
+
+        if (index & 0xFF000000) {
+            // Value type - we don't remove the proxy from the object.  It will sit their happily
+            // doing nothing until it is removed by a write, a binding change or it is reused
+            // to hold more sub-bindings.
+        } else if (m_object) {
+            QDeclarativeData *data = QDeclarativeData::get(m_object, false);
+            if (data) data->clearBindingBit(index);
+        }
+
+        m_object = 0;
+        m_propertyIndex = -1;
+    }
+}
+
+static void bindingDummyDeleter(QDeclarativeAbstractBinding *)
+{
+}
+
+QDeclarativeAbstractBinding::Pointer QDeclarativeAbstractBinding::weakPointer()
+{
+    if (m_selfPointer.isNull())
+        m_selfPointer = QSharedPointer<QDeclarativeAbstractBinding>(this, bindingDummyDeleter);
+
+    return m_selfPointer.toWeakRef();
+}
+
+void QDeclarativeAbstractBinding::clear()
+{
+    if (m_mePtr) {
+        *m_mePtr = 0;
+        m_mePtr = 0;
+    }
+}
+
+QString QDeclarativeAbstractBinding::expression() const
+{
+    return QLatin1String("<Unknown>");
+}
+
+QObject *QDeclarativeAbstractBinding::object() const
+{
+    return m_object;
+}
+
+int QDeclarativeAbstractBinding::propertyIndex() const
+{
+    return m_propertyIndex;
+}
+
+void QDeclarativeAbstractBinding::setEnabled(bool enabled, QDeclarativePropertyPrivate::WriteFlags flags)
+{
+    if (enabled) update(flags);
+}
+
 void QDeclarativeBindingPrivate::refresh()
 {
     Q_Q(QDeclarativeBinding);
@@ -255,20 +407,8 @@ void QDeclarativeBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteF
     d->enabled = e;
     setNotifyOnValueChanged(e);
 
-    QDeclarativeAbstractBinding::setEnabled(e, flags);
-
-    if (e) {
-        addToObject(d->property.object());
+    if (e) 
         update(flags);
-    } else {
-        removeFromObject();
-    }
-}
-
-int QDeclarativeBinding::propertyIndex()
-{
-    Q_D(QDeclarativeBinding);
-    return QDeclarativePropertyPrivate::bindingIndex(d->property);
 }
 
 bool QDeclarativeBinding::enabled() const
@@ -283,127 +423,6 @@ QString QDeclarativeBinding::expression() const
     return QDeclarativeExpression::expression();
 }
 
-QDeclarativeAbstractBinding::QDeclarativeAbstractBinding()
-: m_object(0), m_mePtr(0), m_prevBinding(0), m_nextBinding(0)
-{
-}
-
-QDeclarativeAbstractBinding::~QDeclarativeAbstractBinding()
-{
-    Q_ASSERT(m_prevBinding == 0);
-    Q_ASSERT(m_mePtr == 0);
-}
-
-void QDeclarativeAbstractBinding::destroy()
-{
-    removeFromObject();
-    clear();
-
-    delete this;
-}
-
-void QDeclarativeAbstractBinding::addToObject(QObject *object)
-{
-    Q_ASSERT(object);
-
-    if (m_object == object)
-        return;
-
-    int index = propertyIndex();
-
-    removeFromObject();
-
-    Q_ASSERT(!m_prevBinding);
-
-    m_object = object;
-    QDeclarativeData *data = QDeclarativeData::get(object, true);
-
-    if (index & 0xFF000000) {
-        // Value type
-
-        int coreIndex = index & 0xFFFFFF;
-
-        // Find the value type proxy (if there is one)
-        QDeclarativeValueTypeProxyBinding *proxy = 0;
-        if (data->hasBindingBit(coreIndex)) {
-            QDeclarativeAbstractBinding *b = data->bindings;
-            while (b && b->propertyIndex() != coreIndex)
-                b = b->m_nextBinding;
-            Q_ASSERT(b && b->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy);
-            proxy = static_cast<QDeclarativeValueTypeProxyBinding *>(b);
-        }
-
-        if (!proxy) 
-            proxy = new QDeclarativeValueTypeProxyBinding(object, coreIndex);
-        proxy->addToObject(object);
-
-        m_nextBinding = proxy->m_bindings;
-        if (m_nextBinding) m_nextBinding->m_prevBinding = &m_nextBinding;
-        m_prevBinding = &proxy->m_bindings;
-        proxy->m_bindings = this;
-
-    } else {
-        m_nextBinding = data->bindings;
-        if (m_nextBinding) m_nextBinding->m_prevBinding = &m_nextBinding;
-        m_prevBinding = &data->bindings;
-        data->bindings = this;
-
-        data->setBindingBit(m_object, index);
-    }
-}
-
-void QDeclarativeAbstractBinding::removeFromObject()
-{
-    if (m_prevBinding) {
-        int index = propertyIndex();
-
-        *m_prevBinding = m_nextBinding;
-        if (m_nextBinding) m_nextBinding->m_prevBinding = m_prevBinding;
-        m_prevBinding = 0;
-        m_nextBinding = 0;
-
-        if (index & 0xFF000000) {
-            // Value type - we don't remove the proxy from the object.  It will sit their happily
-            // doing nothing for ever more.
-        } else if (m_object) {
-            QDeclarativeData *data = QDeclarativeData::get(m_object, false);
-            if (data) data->clearBindingBit(index);
-        }
-
-        m_object = 0;
-    }
-}
-
-static void bindingDummyDeleter(QDeclarativeAbstractBinding *)
-{
-}
-
-QDeclarativeAbstractBinding::Pointer QDeclarativeAbstractBinding::weakPointer()
-{
-    if (m_selfPointer.isNull())
-        m_selfPointer = QSharedPointer<QDeclarativeAbstractBinding>(this, bindingDummyDeleter);
-
-    return m_selfPointer.toWeakRef();
-}
-
-void QDeclarativeAbstractBinding::clear()
-{
-    if (m_mePtr) {
-        *m_mePtr = 0;
-        m_mePtr = 0;
-    }
-}
-
-QString QDeclarativeAbstractBinding::expression() const
-{
-    return QLatin1String("<Unknown>");
-}
-
-void QDeclarativeAbstractBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags)
-{
-    if (e) m_mePtr = 0;
-}
-
 QDeclarativeValueTypeProxyBinding::QDeclarativeValueTypeProxyBinding(QObject *o, int index)
 : m_object(o), m_index(index), m_bindings(0)
 {
@@ -421,16 +440,10 @@ QDeclarativeValueTypeProxyBinding::~QDeclarativeValueTypeProxyBinding()
 void QDeclarativeValueTypeProxyBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags flags)
 {
     if (e) {
-        addToObject(m_object);
-
         QDeclarativeAbstractBinding *bindings = m_bindings;
-        m_bindings = 0;
         recursiveEnable(bindings, flags);
     } else {
-        removeFromObject();
-
         QDeclarativeAbstractBinding *bindings = m_bindings;
-        m_bindings = 0;
         recursiveDisable(bindings);
     }
 }
@@ -440,13 +453,7 @@ void QDeclarativeValueTypeProxyBinding::recursiveEnable(QDeclarativeAbstractBind
     if (!b)
         return;
 
-    QDeclarativeAbstractBinding *next = b->m_nextBinding;
-    b->m_prevBinding = 0;
-    b->m_nextBinding = 0;
-    Q_ASSERT(b->m_mePtr == 0);
-    b->m_mePtr = &b;
-
-    recursiveEnable(next, flags);
+    recursiveEnable(b->m_nextBinding, flags);
 
     if (b)
         b->setEnabled(true, flags);
@@ -459,19 +466,8 @@ void QDeclarativeValueTypeProxyBinding::recursiveDisable(QDeclarativeAbstractBin
 
     recursiveDisable(b->m_nextBinding);
 
-    b->setEnabled(false, 0);
-
-    Q_ASSERT(b->m_prevBinding == 0);
-    Q_ASSERT(b->m_nextBinding == 0);
-    b->m_nextBinding = m_bindings;
-    if (b->m_nextBinding) b->m_nextBinding->m_prevBinding = &b->m_nextBinding;
-    b->m_prevBinding = &m_bindings;
-    m_bindings = b;
-}
-
-int QDeclarativeValueTypeProxyBinding::propertyIndex()
-{
-    return m_index;
+    if (b)
+        b->setEnabled(false, 0);
 }
 
 void QDeclarativeValueTypeProxyBinding::update(QDeclarativePropertyPrivate::WriteFlags)
@@ -488,4 +484,25 @@ QDeclarativeAbstractBinding *QDeclarativeValueTypeProxyBinding::binding(int prop
     return binding;
 }
 
+/*!
+Removes a collection of bindings, corresponding to the set bits in \a mask.
+*/
+void QDeclarativeValueTypeProxyBinding::removeBindings(quint32 mask)
+{
+    QDeclarativeAbstractBinding *binding = m_bindings;
+    while (binding) {
+        if (mask & (1 << (binding->propertyIndex() >> 24))) {
+            QDeclarativeAbstractBinding *remove = binding;
+            binding = remove->m_nextBinding;
+            *remove->m_prevBinding = remove->m_nextBinding;
+            if (remove->m_nextBinding) remove->m_nextBinding->m_prevBinding = remove->m_prevBinding;
+            remove->m_prevBinding = 0;
+            remove->m_nextBinding = 0;
+            remove->destroy();
+        } else {
+            binding = binding->m_nextBinding;
+        }
+    }
+}
+
 QT_END_NAMESPACE
diff --git a/src/declarative/qml/qdeclarativebinding_p.h b/src/declarative/qml/qdeclarativebinding_p.h
index 0b9bde6..7823a3d 100644
--- a/src/declarative/qml/qdeclarativebinding_p.h
+++ b/src/declarative/qml/qdeclarativebinding_p.h
@@ -78,14 +78,16 @@ public:
     enum Type { PropertyBinding, ValueTypeProxy };
     virtual Type bindingType() const { return PropertyBinding; }
 
+    QObject *object() const;
+    int propertyIndex() const;
+
     void setEnabled(bool e) { setEnabled(e, QDeclarativePropertyPrivate::DontRemoveBinding); }
     virtual void setEnabled(bool, QDeclarativePropertyPrivate::WriteFlags) = 0;
-    virtual int propertyIndex() = 0;
 
     void update() { update(QDeclarativePropertyPrivate::DontRemoveBinding); }
     virtual void update(QDeclarativePropertyPrivate::WriteFlags) = 0;
 
-    void addToObject(QObject *);
+    void addToObject(QObject *, int);
     void removeFromObject();
 
     static Pointer getPointer(QDeclarativeAbstractBinding *p) { return p ? p->weakPointer() : Pointer(); }
@@ -98,12 +100,14 @@ private:
     Pointer weakPointer();
 
     friend class QDeclarativeData;
+    friend class QDeclarativeComponentPrivate;
     friend class QDeclarativeValueTypeProxyBinding;
     friend class QDeclarativePropertyPrivate;
     friend class QDeclarativeVME;
     friend class QtSharedPointer::ExternalRefCount<QDeclarativeAbstractBinding>;
 
     QObject *m_object;
+    int m_propertyIndex;
     QDeclarativeAbstractBinding **m_mePtr;
     QDeclarativeAbstractBinding **m_prevBinding;
     QDeclarativeAbstractBinding  *m_nextBinding;
@@ -118,11 +122,12 @@ public:
     virtual Type bindingType() const { return ValueTypeProxy; }
 
     virtual void setEnabled(bool, QDeclarativePropertyPrivate::WriteFlags);
-    virtual int propertyIndex();
     virtual void update(QDeclarativePropertyPrivate::WriteFlags);
 
     QDeclarativeAbstractBinding *binding(int propertyIndex);
 
+    void removeBindings(quint32 mask);
+
 protected:
     ~QDeclarativeValueTypeProxyBinding();
 
@@ -154,7 +159,6 @@ public:
 
     // Inherited from  QDeclarativeAbstractBinding
     virtual void setEnabled(bool, QDeclarativePropertyPrivate::WriteFlags flags);
-    virtual int propertyIndex();
     virtual void update(QDeclarativePropertyPrivate::WriteFlags flags);
     virtual QString expression() const;
 
diff --git a/src/declarative/qml/qdeclarativecompiledbindings.cpp b/src/declarative/qml/qdeclarativecompiledbindings.cpp
index fbe5829..5c295b9 100644
--- a/src/declarative/qml/qdeclarativecompiledbindings.cpp
+++ b/src/declarative/qml/qdeclarativecompiledbindings.cpp
@@ -187,7 +187,6 @@ public:
 
         // Inherited from QDeclarativeAbstractBinding
         virtual void setEnabled(bool, QDeclarativePropertyPrivate::WriteFlags flags);
-        virtual int propertyIndex();
         virtual void update(QDeclarativePropertyPrivate::WriteFlags flags);
         virtual void destroy();
 
@@ -294,14 +293,6 @@ QDeclarativeAbstractBinding *QDeclarativeCompiledBindings::configBinding(int ind
 
 void QDeclarativeCompiledBindingsPrivate::Binding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags flags)
 {
-    if (e) {
-        addToObject(target);
-    } else {
-        removeFromObject();
-    }
-
-    QDeclarativeAbstractBinding::setEnabled(e, flags);
-
     if (enabled != e) {
         enabled = e;
 
@@ -309,11 +300,6 @@ void QDeclarativeCompiledBindingsPrivate::Binding::setEnabled(bool e, QDeclarati
     }
 }
 
-int QDeclarativeCompiledBindingsPrivate::Binding::propertyIndex()
-{
-    return property & 0xFFFF;
-}
-
 void QDeclarativeCompiledBindingsPrivate::Binding::update(QDeclarativePropertyPrivate::WriteFlags flags)
 {
     parent->run(this, flags);
diff --git a/src/declarative/qml/qdeclarativecompiler.cpp b/src/declarative/qml/qdeclarativecompiler.cpp
index 645402e..df428b1 100644
--- a/src/declarative/qml/qdeclarativecompiler.cpp
+++ b/src/declarative/qml/qdeclarativecompiler.cpp
@@ -946,6 +946,16 @@ void QDeclarativeCompiler::genObject(QDeclarativeParser::Object *obj)
                               QDeclarativePropertyCache::Data::IsVMEFunction, 
                               QDeclarativePropertyCache::Data::IsVMESignal);
 
+        // Add flag for alias properties
+        if (!obj->synthdata.isEmpty()) {
+            const QDeclarativeVMEMetaData *vmeMetaData = 
+                reinterpret_cast<const QDeclarativeVMEMetaData *>(obj->synthdata.constData());
+            for (int ii = 0; ii < vmeMetaData->aliasCount; ++ii) {
+                int index = obj->metaObject()->propertyOffset() + vmeMetaData->propertyCount + ii;
+                propertyCache->property(index)->flags |= QDeclarativePropertyCache::Data::IsAlias;
+            }
+        }
+
         if (obj == unitRoot) {
             propertyCache->addref();
             output->rootPropertyCache = propertyCache;
@@ -1003,7 +1013,8 @@ void QDeclarativeCompiler::genObjectBody(QDeclarativeParser::Object *obj)
             seenDefer = true;
             continue;
         }
-        genValueProperty(prop, obj);
+        if (!prop->isAlias)
+            genValueProperty(prop, obj);
     }
     if (seenDefer) {
         QDeclarativeInstruction defer;
@@ -1113,25 +1124,56 @@ void QDeclarativeCompiler::genObjectBody(QDeclarativeParser::Object *obj)
     }
 
     foreach(Property *prop, obj->valueTypeProperties) {
-        QDeclarativeInstruction fetch;
-        fetch.type = QDeclarativeInstruction::FetchValueType;
-        fetch.fetchValue.property = prop->index;
-        fetch.fetchValue.type = prop->type;
-        fetch.line = prop->location.start.line;
+        if (!prop->isAlias)
+            genValueTypeProperty(obj, prop);
+    }
 
-        output->bytecode << fetch;
+    foreach(Property *prop, obj->valueProperties) {
+        if (prop->isDeferred) 
+            continue;
+        if (prop->isAlias)
+            genValueProperty(prop, obj);
+    }
+
+    foreach(Property *prop, obj->valueTypeProperties) {
+        if (prop->isAlias)
+            genValueTypeProperty(obj, prop);
+    }
+}
 
+void QDeclarativeCompiler::genValueTypeProperty(QDeclarativeParser::Object *obj,QDeclarativeParser::Property *prop)
+{
+    QDeclarativeInstruction fetch;
+    fetch.type = QDeclarativeInstruction::FetchValueType;
+    fetch.fetchValue.property = prop->index;
+    fetch.fetchValue.type = prop->type;
+    fetch.fetchValue.bindingSkipList = 0;
+    fetch.line = prop->location.start.line;
+
+    if (obj->type == -1 || output->types.at(obj->type).component) {
+        // We only have to do this if this is a composite type.  If it is a builtin
+        // type it can't possibly already have bindings that need to be cleared.
         foreach(Property *vprop, prop->value->valueProperties) {
-            genPropertyAssignment(vprop, prop->value, prop);
+            if (!vprop->values.isEmpty()) {
+                Q_ASSERT(vprop->index >= 0 && vprop->index < 32);
+                fetch.fetchValue.bindingSkipList |= (1 << vprop->index);
+            }
         }
+    }
 
-        QDeclarativeInstruction pop;
-        pop.type = QDeclarativeInstruction::PopValueType;
-        pop.fetchValue.property = prop->index;
-        pop.fetchValue.type = prop->type;
-        pop.line = prop->location.start.line;
-        output->bytecode << pop;
+    output->bytecode << fetch;
+
+    foreach(Property *vprop, prop->value->valueProperties) {
+        genPropertyAssignment(vprop, prop->value, prop);
     }
+
+    QDeclarativeInstruction pop;
+    pop.type = QDeclarativeInstruction::PopValueType;
+    pop.fetchValue.property = prop->index;
+    pop.fetchValue.type = prop->type;
+    pop.fetchValue.bindingSkipList = 0;
+    pop.line = prop->location.start.line;
+    output->bytecode << pop;
 }
 
 void QDeclarativeCompiler::genComponent(QDeclarativeParser::Object *obj)
@@ -1440,10 +1482,22 @@ bool QDeclarativeCompiler::buildProperty(QDeclarativeParser::Property *prop,
         if (p.name()) {
             prop->type = p.userType();
         }
-    }
 
-    if (prop->index != -1) 
-        prop->parent->setBindingBit(prop->index);
+        // Check if this is an alias
+        if (prop->index != -1 && 
+            prop->parent && 
+            prop->parent->type != -1 && 
+            output->types.at(prop->parent->type).component) {
+
+            QDeclarativePropertyCache *cache = output->types.at(prop->parent->type).component->rootPropertyCache;
+            if (cache && cache->property(prop->index) && 
+                cache->property(prop->index)->flags & QDeclarativePropertyCache::Data::IsAlias)
+                prop->isAlias = true;
+        }
+
+        if (prop->index != -1 && !prop->values.isEmpty()) 
+            prop->parent->setBindingBit(prop->index);
+    }
 
     if (!prop->isDefault && prop->name == "id" && !ctxt.isSubContext()) {
 
@@ -1778,6 +1832,12 @@ bool QDeclarativeCompiler::buildGroupedProperty(QDeclarativeParser::Property *pr
                 COMPILE_EXCEPTION(prop, tr( "Invalid property assignment: \"%1\" is a read-only property").arg(QString::fromUtf8(prop->name)));
             }
 
+
+            if (prop->isAlias) {
+                foreach (Property *vtProp, prop->value->properties)
+                    vtProp->isAlias = true;
+            }
+
             COMPILE_CHECK(buildValueTypeProperty(enginePrivate->valueTypes[prop->type],
                                                  prop->value, obj, ctxt.incr()));
             obj->addValueTypeProperty(prop);
@@ -2423,7 +2483,7 @@ bool QDeclarativeCompiler::buildDynamicMeta(QDeclarativeParser::Object *obj, Dyn
         if (p.type == Object::DynamicProperty::Alias) {
             if (mode == ResolveAliases) {
                 ((QDeclarativeVMEMetaData *)dynamicData.data())->aliasCount++;
-                compileAlias(builder, dynamicData, obj, p);
+                COMPILE_CHECK(compileAlias(builder, dynamicData, obj, p));
             } else {
                 // Need a fake signal so that the metaobject remains consistent across
                 // the resolve and non-resolve alias runs
@@ -2694,7 +2754,10 @@ void QDeclarativeCompiler::genBindingAssignment(QDeclarativeParser::Value *bindi
     }
 
     QDeclarativeInstruction store;
-    store.type = QDeclarativeInstruction::StoreBinding;
+    if (!prop->isAlias)
+        store.type = QDeclarativeInstruction::StoreBinding;
+    else
+        store.type = QDeclarativeInstruction::StoreBindingOnAlias;
     store.assignBinding.value = output->indexForByteArray(ref.compiledData);
     store.assignBinding.context = ref.bindingContext.stack;
     store.assignBinding.owner = ref.bindingContext.owner;
@@ -2769,13 +2832,17 @@ bool QDeclarativeCompiler::completeComponentBuild()
         expr.expression = binding.expression;
         expr.imports = unit->imports();
 
-        int index = bindingCompiler.compile(expr, enginePrivate);
-        if (index != -1) {
-            binding.dataType = BindingReference::Experimental;
-            binding.compiledIndex = index;
-            componentStat.optimizedBindings.append(iter.key()->location);
-            continue;
-        } 
+        // ### We don't currently optimize for bindings on alias's - because 
+        // of the solution to QTBUG-13719
+        if (!binding.property->isAlias) {
+            int index = bindingCompiler.compile(expr, enginePrivate);
+            if (index != -1) {
+                binding.dataType = BindingReference::Experimental;
+                binding.compiledIndex = index;
+                componentStat.optimizedBindings.append(iter.key()->location);
+                continue;
+            } 
+        }
 
         binding.dataType = BindingReference::QtScript;
 
diff --git a/src/declarative/qml/qdeclarativecompiler_p.h b/src/declarative/qml/qdeclarativecompiler_p.h
index 5cd1fd2..7d76ad9 100644
--- a/src/declarative/qml/qdeclarativecompiler_p.h
+++ b/src/declarative/qml/qdeclarativecompiler_p.h
@@ -252,6 +252,7 @@ private:
 
     void genObject(QDeclarativeParser::Object *obj);
     void genObjectBody(QDeclarativeParser::Object *obj);
+    void genValueTypeProperty(QDeclarativeParser::Object *obj,QDeclarativeParser::Property *);
     void genComponent(QDeclarativeParser::Object *obj);
     void genValueProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
     void genListProperty(QDeclarativeParser::Property *prop, QDeclarativeParser::Object *obj);
diff --git a/src/declarative/qml/qdeclarativecomponent.cpp b/src/declarative/qml/qdeclarativecomponent.cpp
index 2686ce3..ecb3bc5 100644
--- a/src/declarative/qml/qdeclarativecomponent.cpp
+++ b/src/declarative/qml/qdeclarativecomponent.cpp
@@ -147,32 +147,36 @@ class QByteArray;
     Components are reusable, encapsulated QML elements with well-defined interfaces.
 
     Components are often defined by \l {qdeclarativedocuments.html}{component files} -
-    that is, \c .qml files. The \e Component element allows components to be defined
-    within QML items rather than in a separate file. This may be useful for reusing 
-    a small component within a QML file, or for defining a component that logically 
-    belongs with other QML components within a file.
+    that is, \c .qml files. The \e Component element essentially allows QML components
+    to be defined inline, within a \l {QML Document}{QML document}, rather than as a separate QML file.
+    This may be useful for reusing a small component within a QML file, or for defining
+    a component that logically belongs with other QML components within a file.
 
     For example, here is a component that is used by multiple \l Loader objects.
-    It contains a top level \l Rectangle item:
+    It contains a single item, a \l Rectangle:
 
     \snippet doc/src/snippets/declarative/component.qml 0
 
     Notice that while a \l Rectangle by itself would be automatically 
     rendered and displayed, this is not the case for the above rectangle
     because it is defined inside a \c Component. The component encapsulates the
-    QML elements within, as if they were defined in a separate \c .qml
+    QML elements within, as if they were defined in a separate QML
     file, and is not loaded until requested (in this case, by the
     two \l Loader objects).
 
-    A Component cannot contain anything other
-    than an \c id and a single top level item. While the \c id is optional,
-    the top level item is not; you cannot define an empty component.
+    Defining a \c Component is similar to defining a \l {QML Document}{QML document}.
+    A QML document has a single top-level item that defines the behaviors and
+    properties of that component, and cannot define properties or behaviors outside
+    of that top-level item. In the same way, a \c Component definition contains a single
+    top level item (which in the above example is a \l Rectangle) and cannot define any
+    data outside of this item, with the exception of an \e id (which in the above example
+    is \e redSquare).
 
-    The Component element is commonly used to provide graphical components
-    for views. For example, the ListView::delegate property requires a Component
+    The \c Component element is commonly used to provide graphical components
+    for views. For example, the ListView::delegate property requires a \c Component
     to specify how each list item is to be displayed.
 
-    Component objects can also be dynamically created using
+    \c Component objects can also be created dynamically using
     \l{QML:Qt::createComponent()}{Qt.createComponent()}.
 */
 
@@ -695,17 +699,6 @@ QObject *QDeclarativeComponent::create(QDeclarativeContext *context)
     return rv;
 }
 
-QObject *QDeclarativeComponentPrivate::create(QDeclarativeContextData *context, 
-                                              const QBitField &bindings)
-{
-    if (!context)
-        context = QDeclarativeContextData::get(engine->rootContext());
-
-    QObject *rv = beginCreate(context, bindings);
-    completeCreate();
-    return rv;
-}
-
 /*!
     This method provides more advanced control over component instance creation.
     In general, programmers should use QDeclarativeComponent::create() to create a 
@@ -876,9 +869,12 @@ void QDeclarativeComponentPrivate::complete(QDeclarativeEnginePrivate *enginePri
             QDeclarativeEnginePrivate::SimpleList<QDeclarativeAbstractBinding> bv = 
                 state->bindValues.at(ii);
             for (int jj = 0; jj < bv.count; ++jj) {
-                if(bv.at(jj)) 
+                if(bv.at(jj)) {
+                    // XXX akennedy
+                    bv.at(jj)->m_mePtr = 0;
                     bv.at(jj)->setEnabled(true, QDeclarativePropertyPrivate::BypassInterceptor | 
                                                 QDeclarativePropertyPrivate::DontRemoveBinding);
+                }
             }
             QDeclarativeEnginePrivate::clear(bv);
         }
diff --git a/src/declarative/qml/qdeclarativecomponent_p.h b/src/declarative/qml/qdeclarativecomponent_p.h
index 7b30bad..daf1dcb 100644
--- a/src/declarative/qml/qdeclarativecomponent_p.h
+++ b/src/declarative/qml/qdeclarativecomponent_p.h
@@ -81,7 +81,6 @@ class Q_AUTOTEST_EXPORT QDeclarativeComponentPrivate : public QObjectPrivate, pu
 public:
     QDeclarativeComponentPrivate() : typeData(0), progress(0.), start(-1), count(-1), cc(0), engine(0), creationContext(0) {}
 
-    QObject *create(QDeclarativeContextData *, const QBitField &);
     QObject *beginCreate(QDeclarativeContextData *, const QBitField &);
     void completeCreate();
 
diff --git a/src/declarative/qml/qdeclarativedata_p.h b/src/declarative/qml/qdeclarativedata_p.h
index def4188..4767169 100644
--- a/src/declarative/qml/qdeclarativedata_p.h
+++ b/src/declarative/qml/qdeclarativedata_p.h
@@ -65,6 +65,7 @@ class QDeclarativeContext;
 class QDeclarativePropertyCache;
 class QDeclarativeContextData;
 class QDeclarativeNotifier;
+class QDeclarativeDataExtended;
 // This class is structured in such a way, that simply zero'ing it is the
 // default state for elemental object allocations.  This is crucial in the
 // workings of the QDeclarativeInstruction::CreateSimpleObject instruction.
@@ -150,17 +151,13 @@ public:
         }
     }
 
+    bool hasExtendedData() const { return extendedData != 0; }
     QDeclarativeNotifier *objectNameNotifier() const;
     QHash<int, QObject *> *attachedProperties() const;
 
-    struct ExtendedData {
-        ExtendedData();
-        ~ExtendedData();
-
-        QHash<int, QObject *> attachedProperties;
-        void *objectNameNotifier;
-    };
-    mutable ExtendedData *extendedData;
+private:
+    // For objectNameNotifier and attachedProperties
+    mutable QDeclarativeDataExtended *extendedData;
 };
 
 template<class T>
diff --git a/src/declarative/qml/qdeclarativeengine.cpp b/src/declarative/qml/qdeclarativeengine.cpp
index cd11336..adcaf3c 100644
--- a/src/declarative/qml/qdeclarativeengine.cpp
+++ b/src/declarative/qml/qdeclarativeengine.cpp
@@ -261,6 +261,33 @@ of their use.
 \endlist
 */
 
+/*!
+\qmlmethod object Qt::include(string url, jsobject callback)
+
+Includes another JavaScript file. This method can only be used from within JavaScript files,
+and not regular QML files.
+
+This imports all functions from \a url into the current script's namespace.
+
+Qt.include() returns an object that describes the status of the operation.  The object has
+a single property, \c {status}, that is set to one of the following values:
+
+\table
+\header \o Symbol \o Value \o Description
+\row \o result.OK \o 0 \o The include completed successfully.
+\row \o result.LOADING \o 1 \o Data is being loaded from the network.
+\row \o result.NETWORK_ERROR \o 2 \o A network error occurred while fetching the url.
+\row \o result.EXCEPTION \o 3 \o A JavaScript exception occurred while executing the included code.
+An additional \c exception property will be set in this case.
+\endtable
+
+The \c status property will be updated as the operation progresses.
+
+If provided, \a callback is invoked when the operation completes.  The callback is passed
+the same object as is returned from the Qt.include() call.
+*/
+// Qt.include() is implemented in qdeclarativeinclude.cpp
+
 
 QDeclarativeEnginePrivate::QDeclarativeEnginePrivate(QDeclarativeEngine *e)
 : captureProperties(false), rootContext(0), isDebugging(false),
@@ -678,6 +705,9 @@ QNetworkAccessManager *QDeclarativeEngine::networkAccessManager() const
   requests. See the QDeclarativeImageProvider documentation for details on
   implementing and using image providers.
 
+  All required image providers should be added to the engine before any
+  QML sources files are loaded.
+
   Note that images loaded from a QDeclarativeImageProvider are cached
   by QPixmapCache, similar to any image loaded by QML.
 
@@ -730,8 +760,10 @@ QImage QDeclarativeEnginePrivate::getImageFromProvider(const QUrl &url, QSize *s
     QImage image;
     QSharedPointer<QDeclarativeImageProvider> provider = imageProviders.value(url.host());
     locker.unlock();
-    if (provider)
-        image = provider->requestImage(url.path().mid(1), size, req_size);
+    if (provider) {
+        QString imageId = url.toString(QUrl::RemoveScheme | QUrl::RemoveAuthority).mid(1);
+        image = provider->requestImage(imageId, size, req_size);
+    }
     return image;
 }
 
@@ -741,8 +773,10 @@ QPixmap QDeclarativeEnginePrivate::getPixmapFromProvider(const QUrl &url, QSize
     QPixmap pixmap;
     QSharedPointer<QDeclarativeImageProvider> provider = imageProviders.value(url.host());
     locker.unlock();
-    if (provider)
-        pixmap = provider->requestPixmap(url.path().mid(1), size, req_size);
+    if (provider) {
+        QString imageId = url.toString(QUrl::RemoveScheme | QUrl::RemoveAuthority).mid(1);
+        pixmap = provider->requestPixmap(imageId, size, req_size);
+    }
     return pixmap;
 }
 
@@ -897,9 +931,7 @@ void QDeclarativeEngine::setObjectOwnership(QObject *object, ObjectOwnership own
     if (!object)
         return;
 
-    // No need to do anything if CppOwnership and there is no QDeclarativeData as
-    // the current ownership must be CppOwnership
-    QDeclarativeData *ddata = QDeclarativeData::get(object, ownership == JavaScriptOwnership);
+    QDeclarativeData *ddata = QDeclarativeData::get(object, true);
     if (!ddata)
         return;
 
@@ -957,7 +989,7 @@ QObject *qmlAttachedPropertiesObjectById(int id, const QObject *object, bool cre
     if (!data)
         return 0; // Attached properties are only on objects created by QML
 
-    QObject *rv = data->extendedData?data->attachedProperties()->value(id):0;
+    QObject *rv = data->hasExtendedData()?data->attachedProperties()->value(id):0;
     if (rv || !create)
         return rv;
 
@@ -985,6 +1017,35 @@ QObject *qmlAttachedPropertiesObject(int *idCache, const QObject *object,
     return qmlAttachedPropertiesObjectById(*idCache, object, create);
 }
 
+class QDeclarativeDataExtended {
+public:
+    QDeclarativeDataExtended();
+    ~QDeclarativeDataExtended();
+
+    QHash<int, QObject *> attachedProperties;
+    QDeclarativeNotifier objectNameNotifier;
+};
+
+QDeclarativeDataExtended::QDeclarativeDataExtended()
+{
+}
+
+QDeclarativeDataExtended::~QDeclarativeDataExtended()
+{
+}
+
+QDeclarativeNotifier *QDeclarativeData::objectNameNotifier() const
+{
+    if (!extendedData) extendedData = new QDeclarativeDataExtended;
+    return &extendedData->objectNameNotifier;
+}
+
+QHash<int, QObject *> *QDeclarativeData::attachedProperties() const
+{
+    if (!extendedData) extendedData = new QDeclarativeDataExtended;
+    return &extendedData->attachedProperties;
+}
+
 void QDeclarativeData::destroyed(QObject *object)
 {
     if (deferredComponent)
@@ -1075,28 +1136,6 @@ void QDeclarativeData::setBindingBit(QObject *obj, int bit)
     bindingBits[bit / 32] |= (1 << (bit % 32));
 }
 
-QDeclarativeData::ExtendedData::ExtendedData()
-: objectNameNotifier(0)
-{
-}
-
-QDeclarativeData::ExtendedData::~ExtendedData()
-{
-    ((QDeclarativeNotifier *)&objectNameNotifier)->~QDeclarativeNotifier();
-}
-
-QDeclarativeNotifier *QDeclarativeData::objectNameNotifier() const
-{
-    if (!extendedData) extendedData = new ExtendedData;
-    return (QDeclarativeNotifier *)&extendedData->objectNameNotifier;
-}
-
-QHash<int, QObject *> *QDeclarativeData::attachedProperties() const
-{
-    if (!extendedData) extendedData = new ExtendedData;
-    return &extendedData->attachedProperties;
-}
-
 /*!
     Creates a QScriptValue allowing you to use \a object in QML script.
     \a engine is the QDeclarativeEngine it is to be created in.
@@ -2225,8 +2264,9 @@ bool QDeclarative_isFileCaseCorrect(const QString &fileName)
         if (a != c)
             return false;
     }
+#else
+    Q_UNUSED(fileName)
 #endif
-
     return true;
 }
 
diff --git a/src/declarative/qml/qdeclarativeenginedebug.cpp b/src/declarative/qml/qdeclarativeenginedebug.cpp
index bffe681..e54f7d6 100644
--- a/src/declarative/qml/qdeclarativeenginedebug.cpp
+++ b/src/declarative/qml/qdeclarativeenginedebug.cpp
@@ -146,7 +146,10 @@ QDeclarativeEngineDebugServer::propertyData(QObject *obj, int propIdx)
     if (binding)
         rv.binding = binding->expression();
 
-    QVariant value = prop.read(obj);
+    QVariant value;
+    if (prop.userType() != 0) {
+        value = prop.read(obj);
+    }
     rv.value = valueContents(value);
 
     if (QDeclarativeValueTypeFactory::isValueType(prop.userType())) {
diff --git a/src/declarative/qml/qdeclarativeglobal_p.h b/src/declarative/qml/qdeclarativeglobal_p.h
index 31fbb1e..b8428b8 100644
--- a/src/declarative/qml/qdeclarativeglobal_p.h
+++ b/src/declarative/qml/qdeclarativeglobal_p.h
@@ -65,7 +65,7 @@ QT_MODULE(Declarative)
     }
 
 #ifdef Q_OS_SYMBIAN
-#define Q_DECLARATIVE_PRIVATE_EXPORT
+#define Q_DECLARATIVE_PRIVATE_EXPORT Q_AUTOTEST_EXPORT
 #else
 #define Q_DECLARATIVE_PRIVATE_EXPORT Q_DECLARATIVE_EXPORT
 #endif
diff --git a/src/declarative/qml/qdeclarativeimageprovider.cpp b/src/declarative/qml/qdeclarativeimageprovider.cpp
index ef31be7..e3da645 100644
--- a/src/declarative/qml/qdeclarativeimageprovider.cpp
+++ b/src/declarative/qml/qdeclarativeimageprovider.cpp
@@ -182,13 +182,17 @@ QDeclarativeImageProvider::ImageType QDeclarativeImageProvider::imageType() cons
     Implement this method to return the image with \a id. The default 
     implementation returns an empty image.
 
+    The \a id is the requested image source, with the "image:" scheme and
+    provider identifier removed. For example, if the image \l{Image::}{source}
+    was "image://myprovider/icons/home", the given \a id would be "icons/home".
+
     The \a requestedSize corresponds to the \l {Image::sourceSize} requested by
     an Image element. If \a requestedSize is a valid size, the image
     returned should be of that size.
 
     In all cases, \a size must be set to the original size of the image. This
-    is used to set the \l {Item::}{width} and \l {Item::}{height} of image
-    elements that should be automatically sized to the loaded image.
+    is used to set the \l {Item::}{width} and \l {Item::}{height} of the
+    relevant \l Image if these values have not been set explicitly.
 
     \note this method may be called by multiple threads, so ensure the
     implementation of this method is reentrant.
@@ -207,13 +211,17 @@ QImage QDeclarativeImageProvider::requestImage(const QString &id, QSize *size, c
     Implement this method to return the pixmap with \a id. The default
     implementation returns an empty pixmap.
 
+    The \a id is the requested image source, with the "image:" scheme and
+    provider identifier removed. For example, if the image \l{Image::}{source}
+    was "image://myprovider/icons/home", the given \a id would be "icons/home".
+
     The \a requestedSize corresponds to the \l {Image::sourceSize} requested by
     an Image element. If \a requestedSize is a valid size, the image
     returned should be of that size.
 
     In all cases, \a size must be set to the original size of the image. This
-    is used to set the \l {Item::}{width} and \l {Item::}{height} of image
-    elements that should be automatically sized to the loaded image.
+    is used to set the \l {Item::}{width} and \l {Item::}{height} of the
+    relevant \l Image if these values have not been set explicitly.
 */
 QPixmap QDeclarativeImageProvider::requestPixmap(const QString &id, QSize *size, const QSize& requestedSize)
 {
diff --git a/src/declarative/qml/qdeclarativeimport.cpp b/src/declarative/qml/qdeclarativeimport.cpp
index 6f5216a..94765f2 100644
--- a/src/declarative/qml/qdeclarativeimport.cpp
+++ b/src/declarative/qml/qdeclarativeimport.cpp
@@ -51,6 +51,10 @@
 #include <private/qdeclarativetypenamecache_p.h>
 #include <private/qdeclarativeengine_p.h>
 
+#ifdef Q_OS_SYMBIAN
+#include "private/qcore_symbian_p.h"
+#endif
+
 QT_BEGIN_NAMESPACE
 
 DEFINE_BOOL_CONFIG_OPTION(qmlImportTrace, QML_IMPORT_TRACE)
@@ -378,7 +382,13 @@ bool QDeclarativeImportsPrivate::importExtension(const QString &absoluteFilePath
         foreach (const QDeclarativeDirParser::Plugin &plugin, qmldirParser.plugins()) {
 
             QString resolvedFilePath = database->resolvePlugin(dir, plugin.path, plugin.name);
-
+#if defined(QT_LIBINFIX) && defined(Q_OS_SYMBIAN)
+            if (resolvedFilePath.isEmpty()) {
+                // In case of libinfixed build, attempt to load libinfixed version, too.
+                QString infixedPluginName = plugin.name + QLatin1String(QT_LIBINFIX);
+                resolvedFilePath = database->resolvePlugin(dir, plugin.path, infixedPluginName);
+            }
+#endif
             if (!resolvedFilePath.isEmpty()) {
                 if (!database->importPlugin(resolvedFilePath, uri, errorString)) {
                     if (errorString)
@@ -658,8 +668,32 @@ QDeclarativeImportDatabase::QDeclarativeImportDatabase(QDeclarativeEngine *e)
 
     // Search order is applicationDirPath(), $QML_IMPORT_PATH, QLibraryInfo::ImportsPath
 
-    addImportPath(QLibraryInfo::location(QLibraryInfo::ImportsPath));
+    QString installImportsPath =  QLibraryInfo::location(QLibraryInfo::ImportsPath);
 
+#if defined(Q_OS_SYMBIAN)
+    // Append imports path for all available drives in Symbian
+    if (installImportsPath.at(1) != QChar(QLatin1Char(':'))) {
+        QString tempPath = installImportsPath;
+        if (tempPath.at(tempPath.length() - 1) != QDir::separator()) {
+            tempPath += QDir::separator();
+        }
+        RFs& fs = qt_s60GetRFs();
+        TPtrC tempPathPtr(reinterpret_cast<const TText*> (tempPath.constData()));
+        TFindFile finder(fs);
+        TInt err = finder.FindByDir(tempPathPtr, tempPathPtr);
+        while (err == KErrNone) {
+            QString foundDir(reinterpret_cast<const QChar *>(finder.File().Ptr()),
+                             finder.File().Length());
+            foundDir = QDir(foundDir).canonicalPath();
+            addImportPath(foundDir);
+            err = finder.Find();
+        }
+    } else {
+        addImportPath(installImportsPath);
+    }
+#else
+    addImportPath(installImportsPath);
+#endif
     // env import paths
     QByteArray envImportPath = qgetenv("QML_IMPORT_PATH");
     if (!envImportPath.isEmpty()) {
diff --git a/src/declarative/qml/qdeclarativeinclude.cpp b/src/declarative/qml/qdeclarativeinclude.cpp
index 1e240d7..a9ecdda 100644
--- a/src/declarative/qml/qdeclarativeinclude.cpp
+++ b/src/declarative/qml/qdeclarativeinclude.cpp
@@ -172,28 +172,8 @@ void QDeclarativeInclude::callback(QScriptEngine *engine, QScriptValue &callback
     }
 }
 
-/*!
-\qmlmethod object Qt::include(string url, jsobject callback)
-
-Include another JavaScript file.  This method can only be used from within JavaScript files, 
-and not regular QML files.
-
-Qt.include() returns an object that describes the status of the operation.  The object has
-a single property, \c {status} that is set to one of the following values:
-
-\table
-\header \o Symbol \o Value \o Description
-\row \o result.OK \o 0 \o The include completed successfully.
-\row \o result.LOADING \o 1 \o Data is being loaded from the network.
-\row \o result.NETWORK_ERROR \o 2 \o A network error occurred while fetching the url.
-\row \o result.EXCEPTION \o 3 \o A JavaScript exception occurred while executing the included code.
-An additional \c exception property will be set in this case.
-\endtable
-
-The return object's properties will be updated as the operation progresses.
-
-If provided, \a callback is invoked when the operation completes.  The callback is passed
-the same object as is returned from the Qt.include() call.
+/*
+    Documented in qdeclarativeengine.cpp
 */
 QScriptValue QDeclarativeInclude::include(QScriptContext *ctxt, QScriptEngine *engine)
 {
diff --git a/src/declarative/qml/qdeclarativeinstruction.cpp b/src/declarative/qml/qdeclarativeinstruction.cpp
index 1767d2f..818c15d 100644
--- a/src/declarative/qml/qdeclarativeinstruction.cpp
+++ b/src/declarative/qml/qdeclarativeinstruction.cpp
@@ -63,7 +63,7 @@ void QDeclarativeCompiledData::dump(QDeclarativeInstruction *instr, int idx)
         qWarning().nospace() << idx << "\t\t" << line << "\t" << "INIT\t\t\t" << instr->init.bindingsSize << "\t" << instr->init.parserStatusSize << "\t" << instr->init.contextCache << "\t" << instr->init.compiledBinding;
         break;
     case QDeclarativeInstruction::CreateObject:
-        qWarning().nospace() << idx << "\t\t" << line << "\t" << "CREATE\t\t\t" << instr->create.type << "\t\t\t" << types.at(instr->create.type).className;
+        qWarning().nospace() << idx << "\t\t" << line << "\t" << "CREATE\t\t\t" << instr->create.type << "\t" << instr->create.bindingBits << "\t\t" << types.at(instr->create.type).className;
         break;
     case QDeclarativeInstruction::CreateSimpleObject:
         qWarning().nospace() << idx << "\t\t" << line << "\t" << "CREATE_SIMPLE\t\t" << instr->createSimple.typeSize;
@@ -174,6 +174,9 @@ void QDeclarativeCompiledData::dump(QDeclarativeInstruction *instr, int idx)
     case QDeclarativeInstruction::StoreBinding:
         qWarning().nospace() << idx << "\t\t" << line << "\t" << "STORE_BINDING\t" << instr->assignBinding.property << "\t" << instr->assignBinding.value << "\t" << instr->assignBinding.context;
         break;
+    case QDeclarativeInstruction::StoreBindingOnAlias:
+        qWarning().nospace() << idx << "\t\t" << line << "\t" << "STORE_BINDING_ALIAS\t" << instr->assignBinding.property << "\t" << instr->assignBinding.value << "\t" << instr->assignBinding.context;
+        break;
     case QDeclarativeInstruction::StoreCompiledBinding:
         qWarning().nospace() << idx << "\t\t" << line << "\t" << "STORE_COMPILED_BINDING\t" << instr->assignBinding.property << "\t" << instr->assignBinding.value << "\t" << instr->assignBinding.context;
         break;
@@ -203,7 +206,7 @@ void QDeclarativeCompiledData::dump(QDeclarativeInstruction *instr, int idx)
         qWarning().nospace() << idx << "\t\t" << line << "\t" << "FETCH\t\t\t" << instr->fetch.property;
         break;
     case QDeclarativeInstruction::FetchValueType:
-        qWarning().nospace() << idx << "\t\t" << line << "\t" << "FETCH_VALUE\t\t" << instr->fetchValue.property << "\t" << instr->fetchValue.type;
+        qWarning().nospace() << idx << "\t\t" << line << "\t" << "FETCH_VALUE\t\t" << instr->fetchValue.property << "\t" << instr->fetchValue.type << "\t" << instr->fetchValue.bindingSkipList;
         break;
     case QDeclarativeInstruction::PopFetchedObject:
         qWarning().nospace() << idx << "\t\t" << line << "\t" << "POP";
diff --git a/src/declarative/qml/qdeclarativeinstruction_p.h b/src/declarative/qml/qdeclarativeinstruction_p.h
index f0b032c..94676fc 100644
--- a/src/declarative/qml/qdeclarativeinstruction_p.h
+++ b/src/declarative/qml/qdeclarativeinstruction_p.h
@@ -132,6 +132,7 @@ public:
         AssignCustomType,         /* assignCustomType */
 
         StoreBinding,             /* assignBinding */
+        StoreBindingOnAlias,      /* assignBinding */
         StoreCompiledBinding,     /* assignBinding */
         StoreValueSource,         /* assignValueSource */
         StoreValueInterceptor,    /* assignValueInterceptor */
@@ -214,6 +215,7 @@ public:
     struct FetchValueInstruction {
         int property;
         int type;
+        quint32 bindingSkipList;
     };
     struct FetchQmlListInstruction {
         int property;
diff --git a/src/declarative/qml/qdeclarativenetworkaccessmanagerfactory.cpp b/src/declarative/qml/qdeclarativenetworkaccessmanagerfactory.cpp
index d22798d..36e9721 100644
--- a/src/declarative/qml/qdeclarativenetworkaccessmanagerfactory.cpp
+++ b/src/declarative/qml/qdeclarativenetworkaccessmanagerfactory.cpp
@@ -46,27 +46,44 @@ QT_BEGIN_NAMESPACE
 /*!
     \class QDeclarativeNetworkAccessManagerFactory
     \since 4.7
-    \brief The QDeclarativeNetworkAccessManagerFactory class provides a factory for QNetworkAccessManager for use by a Qt Declarative engine.
+    \brief The QDeclarativeNetworkAccessManagerFactory class creates QNetworkAccessManager instances for a QML engine.
 
-    QNetworkAccessManager is used for all network access by QML.
-    By implementing a factory it is possible to create custom
-    QNetworkAccessManager with specialized caching, proxy and
-    cookie support.
+    A QML engine uses QNetworkAccessManager for all network access.
+    By implementing a factory, it is possible to provide the QML engine
+    with custom QNetworkAccessManager instances with specialized caching,
+    proxy and cookies support.
 
-    To implement a factory, subclass QDeclarativeNetworkAccessManagerFactory and implement
-    the create() method.
+    To implement a factory, subclass QDeclarativeNetworkAccessManagerFactory and
+    implement the virtual create() method, then assign it to the relevant QML
+    engine using QDeclarativeEngine::setNetworkAccessManagerFactory().
 
-    To use a factory, assign it to the relevant QDeclarativeEngine using
-    QDeclarativeEngine::setNetworkAccessManagerFactory().
+    Note the QML engine may create QNetworkAccessManager instances
+    from multiple threads. Because of this, the implementation of the create()
+    method must be \l{Reentrancy and Thread-Safety}{reentrant}. In addition,
+    the developer should be careful if the signals of the object to be
+    returned from create() are connected to the slots of an object that may
+    be created in a different thread:
 
-    Note: the create() method may be called by multiple threads, so ensure the
-    implementation of this method is reentrant.
+    \list
+    \o The QML engine internally handles all requests, and cleans up any
+       QNetworkReply objects it creates. Receiving the
+       QNetworkAccessManager::finished() signal in another thread may not
+       provide the receiver with a valid reply object if it has already
+       been deleted.
+    \o Authentication details provided to QNetworkAccessManager::authenticationRequired()
+       must be provided immediately, so this signal cannot be connected as a
+       Qt::QueuedConnection (or as the default Qt::AutoConnection from another
+       thread).
+    \endlist
+
+    For more information about signals and threads, see
+    \l {Threads and QObjects} and \l {Signals and Slots Across Threads}.
 
-    \sa QDeclarativeEngine::setNetworkAccessManagerFactory(), {declarative/cppextensions/networkaccessmanagerfactory}{NetworkAccessManagerFactory example}
+    \sa {declarative/cppextensions/networkaccessmanagerfactory}{NetworkAccessManagerFactory example}
 */
 
 /*!
-  The destructor is empty.
+    Destroys the factory. The default implementation does nothing.
  */
 QDeclarativeNetworkAccessManagerFactory::~QDeclarativeNetworkAccessManagerFactory()
 {
@@ -75,13 +92,9 @@ QDeclarativeNetworkAccessManagerFactory::~QDeclarativeNetworkAccessManagerFactor
 /*!
     \fn QNetworkAccessManager *QDeclarativeNetworkAccessManagerFactory::create(QObject *parent)
 
-    Implement this method to create a QNetworkAccessManager with \a parent.
-    This allows proxies, caching and cookie support to be setup appropriately.
-
-    This method must return a new QNetworkAccessManager each time it is called.
-    The parent of the QNetworkAccessManager must be the \a parent provided.
-    The QNetworkAccessManager(s) created by this
-    function will be destroyed automatically when their parent is destroyed.
+    Creates and returns a network access manager with the specified \a parent.
+    This method must return a new QNetworkAccessManager instance each time
+    it is called.
 
     Note: this method may be called by multiple threads, so ensure the
     implementation of this method is reentrant.
diff --git a/src/declarative/qml/qdeclarativeobjectscriptclass.cpp b/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
index eff59df..b0bc5bb 100644
--- a/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
+++ b/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
@@ -69,7 +69,7 @@ struct ObjectData : public QScriptDeclarativeClass::Object {
     virtual ~ObjectData() {
         if (object && !object->parent()) {
             QDeclarativeData *ddata = QDeclarativeData::get(object, false);
-            if (ddata && !ddata->indestructible && 0 == --ddata->objectDataRefCount)
+            if (ddata && !ddata->indestructible && 0 == --ddata->objectDataRefCount) 
                 object->deleteLater();
         }
     }
@@ -808,7 +808,14 @@ QScriptDeclarativeClass::Value MetaCallArgument::toValue(QDeclarativeEngine *e)
         }
         return QScriptDeclarativeClass::Value(engine, rv);
     } else if (type == -1 || type == qMetaTypeId<QVariant>()) {
-        return QScriptDeclarativeClass::Value(engine, QDeclarativeEnginePrivate::get(e)->scriptValueFromVariant(*((QVariant *)&data)));
+        QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(e);
+        QScriptValue rv = ep->scriptValueFromVariant(*((QVariant *)&data));
+        if (rv.isQObject()) {
+            QObject *object = rv.toQObject();
+            if (object)
+                QDeclarativeData::get(object, true)->setImplicitDestructible();
+        }
+        return QScriptDeclarativeClass::Value(engine, rv);
     } else {
         return QScriptDeclarativeClass::Value();
     }
diff --git a/src/declarative/qml/qdeclarativeparser.cpp b/src/declarative/qml/qdeclarativeparser.cpp
index 8d00ef8..effecb1 100644
--- a/src/declarative/qml/qdeclarativeparser.cpp
+++ b/src/declarative/qml/qdeclarativeparser.cpp
@@ -205,13 +205,13 @@ QDeclarativeParser::Object::DynamicSlot::DynamicSlot(const DynamicSlot &o)
 
 QDeclarativeParser::Property::Property()
 : parent(0), type(0), index(-1), value(0), isDefault(true), isDeferred(false), 
-  isValueTypeSubProperty(false)
+  isValueTypeSubProperty(false), isAlias(false)
 {
 }
 
 QDeclarativeParser::Property::Property(const QByteArray &n)
 : parent(0), type(0), index(-1), value(0), name(n), isDefault(false), 
-  isDeferred(false), isValueTypeSubProperty(false)
+  isDeferred(false), isValueTypeSubProperty(false), isAlias(false)
 {
 }
 
diff --git a/src/declarative/qml/qdeclarativeparser_p.h b/src/declarative/qml/qdeclarativeparser_p.h
index 77184c2..633847d 100644
--- a/src/declarative/qml/qdeclarativeparser_p.h
+++ b/src/declarative/qml/qdeclarativeparser_p.h
@@ -358,6 +358,9 @@ namespace QDeclarativeParser
         bool isDeferred;
         // True if this property is a value-type pseudo-property
         bool isValueTypeSubProperty;
+        // True if this property is a property alias.  Set by the 
+        // QDeclarativeCompiler
+        bool isAlias;
 
         LocationSpan location;
         LocationRange listValueRange;
diff --git a/src/declarative/qml/qdeclarativeproperty.cpp b/src/declarative/qml/qdeclarativeproperty.cpp
index 1395e97..60edd64 100644
--- a/src/declarative/qml/qdeclarativeproperty.cpp
+++ b/src/declarative/qml/qdeclarativeproperty.cpp
@@ -77,15 +77,28 @@ a property on a specific object instance.  To read a property's value, programme
 QDeclarativeProperty instance and call the read() method.  Likewise to write a property value the
 write() method is used.
 
+For example, for the following QML code:
+
+\qml
+// MyItem.qml
+import QtQuick 1.0
+
+Text { text: "A bit of text" }
+\endqml
+
+The \l Text object's properties could be accessed using QDeclarativeProperty, like this:
+
 \code
+#include <QDeclarativeProperty>
+#include <QGraphicsObject>
 
-QObject *object = declarativeComponent.create();
+...
 
-QDeclarativeProperty property(object, "font.pixelSize");
+QDeclarativeView view(QUrl::fromLocalFile("MyItem.qml"));
+QDeclarativeProperty property(view.rootObject(), "font.pixelSize");
 qWarning() << "Current pixel size:" << property.read().toInt();
 property.write(24);
 qWarning() << "Pixel size should now be 24:" << property.read().toInt();
-
 \endcode
 */
 
@@ -607,26 +620,7 @@ QDeclarativePropertyPrivate::binding(const QDeclarativeProperty &that)
     if (!that.isProperty() || !that.d->object)
         return 0;
 
-    QDeclarativeData *data = QDeclarativeData::get(that.d->object);
-    if (!data) 
-        return 0;
-
-    if (!data->hasBindingBit(that.d->core.coreIndex))
-        return 0;
-
-    QDeclarativeAbstractBinding *binding = data->bindings;
-    while (binding && binding->propertyIndex() != that.d->core.coreIndex) 
-        binding = binding->m_nextBinding;
-
-    if (binding && that.d->valueType.valueTypeCoreIdx != -1) {
-        if (binding->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy) {
-            QDeclarativeValueTypeProxyBinding *proxy = static_cast<QDeclarativeValueTypeProxyBinding *>(binding);
-
-            binding = proxy->binding(bindingIndex(that));
-        }
-    }
-
-    return binding;
+    return binding(that.d->object, that.d->core.coreIndex, that.d->valueType.valueTypeCoreIdx);
 }
 
 /*!
@@ -658,12 +652,106 @@ QDeclarativePropertyPrivate::setBinding(const QDeclarativeProperty &that,
 }
 
 QDeclarativeAbstractBinding *
+QDeclarativePropertyPrivate::binding(QObject *object, int coreIndex, int valueTypeIndex)
+{
+    QDeclarativeData *data = QDeclarativeData::get(object);
+    if (!data)
+        return 0;
+
+    QDeclarativePropertyCache::Data *propertyData = 
+        data->propertyCache?data->propertyCache->property(coreIndex):0;
+    if (propertyData && propertyData->flags & QDeclarativePropertyCache::Data::IsAlias) {
+        const QDeclarativeVMEMetaObject *vme = 
+            static_cast<const QDeclarativeVMEMetaObject *>(metaObjectForProperty(object->metaObject(), coreIndex));
+
+        QObject *aObject = 0; int aCoreIndex = -1; int aValueTypeIndex = -1;
+        if (!vme->aliasTarget(coreIndex, &aObject, &aCoreIndex, &aValueTypeIndex))
+            return 0;
+
+        // This will either be a value type sub-reference or an alias to a value-type sub-reference not both
+        Q_ASSERT(valueTypeIndex == -1 || aValueTypeIndex == -1);
+        return binding(aObject, aCoreIndex, (valueTypeIndex == -1)?aValueTypeIndex:valueTypeIndex);
+    }
+
+    if (!data->hasBindingBit(coreIndex))
+        return 0;
+
+    QDeclarativeAbstractBinding *binding = data->bindings;
+    while (binding && binding->propertyIndex() != coreIndex)
+        binding = binding->m_nextBinding;
+
+    if (binding && valueTypeIndex != -1) {
+        if (binding->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy) {
+            int index = coreIndex | (valueTypeIndex << 24);
+            binding = static_cast<QDeclarativeValueTypeProxyBinding *>(binding)->binding(index);
+        }
+    }
+
+    return binding;
+}
+
+void QDeclarativePropertyPrivate::findAliasTarget(QObject *object, int bindingIndex, 
+                                                  QObject **targetObject, int *targetBindingIndex)
+{
+    int coreIndex = bindingIndex & 0xFFFFFF;
+    int valueTypeIndex = bindingIndex >> 24;
+    if (valueTypeIndex == 0) valueTypeIndex = -1;
+
+    QDeclarativeData *data = QDeclarativeData::get(object, false);
+    if (data) {
+        QDeclarativePropertyCache::Data *propertyData = 
+            data->propertyCache?data->propertyCache->property(coreIndex):0;
+        if (propertyData && propertyData->flags & QDeclarativePropertyCache::Data::IsAlias) {
+            const QDeclarativeVMEMetaObject *vme = 
+                static_cast<const QDeclarativeVMEMetaObject *>(metaObjectForProperty(object->metaObject(), coreIndex));
+            QObject *aObject = 0; int aCoreIndex = -1; int aValueTypeIndex = -1;
+            if (vme->aliasTarget(coreIndex, &aObject, &aCoreIndex, &aValueTypeIndex)) {
+                // This will either be a value type sub-reference or an alias to a value-type sub-reference not both
+                Q_ASSERT(valueTypeIndex == -1 || aValueTypeIndex == -1);
+
+                int aBindingIndex = aCoreIndex;
+                if (aValueTypeIndex != -1) 
+                    aBindingIndex |= aValueTypeIndex << 24;
+                else if (valueTypeIndex != -1)
+                    aBindingIndex |= valueTypeIndex << 24;
+
+                findAliasTarget(aObject, aBindingIndex, targetObject, targetBindingIndex);
+                return;
+            }
+        }
+    }
+
+    *targetObject = object; 
+    *targetBindingIndex = bindingIndex;
+}
+
+QDeclarativeAbstractBinding *
 QDeclarativePropertyPrivate::setBinding(QObject *object, int coreIndex, int valueTypeIndex,
                                         QDeclarativeAbstractBinding *newBinding, WriteFlags flags)
 {
     QDeclarativeData *data = QDeclarativeData::get(object, 0 != newBinding);
     QDeclarativeAbstractBinding *binding = 0;
 
+    if (data) {
+        QDeclarativePropertyCache::Data *propertyData = 
+            data->propertyCache?data->propertyCache->property(coreIndex):0;
+        if (propertyData && propertyData->flags & QDeclarativePropertyCache::Data::IsAlias) {
+            const QDeclarativeVMEMetaObject *vme = 
+                static_cast<const QDeclarativeVMEMetaObject *>(metaObjectForProperty(object->metaObject(), coreIndex));
+
+            QObject *aObject = 0; int aCoreIndex = -1; int aValueTypeIndex = -1;
+            if (!vme->aliasTarget(coreIndex, &aObject, &aCoreIndex, &aValueTypeIndex)) {
+                if (newBinding) newBinding->destroy();
+                return 0;
+            }
+
+            // This will either be a value type sub-reference or an alias to a value-type sub-reference not both
+            Q_ASSERT(valueTypeIndex == -1 || aValueTypeIndex == -1);
+            return setBinding(aObject, aCoreIndex, (valueTypeIndex == -1)?aValueTypeIndex:valueTypeIndex,
+                              newBinding, flags);
+        }
+    }
+
     if (data && data->hasBindingBit(coreIndex)) {
         binding = data->bindings;
 
@@ -671,16 +759,72 @@ QDeclarativePropertyPrivate::setBinding(QObject *object, int coreIndex, int valu
             binding = binding->m_nextBinding;
     }
 
-    if (binding && valueTypeIndex != -1 && binding->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy) {
-        int index = coreIndex | (valueTypeIndex << 24);
+    int index = coreIndex;
+    if (valueTypeIndex != -1)
+        index |= (valueTypeIndex << 24);
+
+    if (binding && valueTypeIndex != -1 && binding->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy) 
         binding = static_cast<QDeclarativeValueTypeProxyBinding *>(binding)->binding(index);
+
+    if (binding) {
+        binding->removeFromObject();
+        binding->setEnabled(false, 0);
+    }
+
+    if (newBinding) {
+        newBinding->addToObject(object, index);
+        newBinding->setEnabled(true, flags);
+    }
+
+    return binding;
+}
+
+QDeclarativeAbstractBinding *
+QDeclarativePropertyPrivate::setBindingNoEnable(QObject *object, int coreIndex, int valueTypeIndex,
+                                                QDeclarativeAbstractBinding *newBinding)
+{
+    QDeclarativeData *data = QDeclarativeData::get(object, 0 != newBinding);
+    QDeclarativeAbstractBinding *binding = 0;
+
+    if (data) {
+        QDeclarativePropertyCache::Data *propertyData = 
+            data->propertyCache?data->propertyCache->property(coreIndex):0;
+        if (propertyData && propertyData->flags & QDeclarativePropertyCache::Data::IsAlias) {
+            const QDeclarativeVMEMetaObject *vme = 
+                static_cast<const QDeclarativeVMEMetaObject *>(metaObjectForProperty(object->metaObject(), coreIndex));
+
+            QObject *aObject = 0; int aCoreIndex = -1; int aValueTypeIndex = -1;
+            if (!vme->aliasTarget(coreIndex, &aObject, &aCoreIndex, &aValueTypeIndex)) {
+                if (newBinding) newBinding->destroy();
+                return 0;
+            }
+
+            // This will either be a value type sub-reference or an alias to a value-type sub-reference not both
+            Q_ASSERT(valueTypeIndex == -1 || aValueTypeIndex == -1);
+            return setBindingNoEnable(aObject, aCoreIndex, (valueTypeIndex == -1)?aValueTypeIndex:valueTypeIndex,
+                                      newBinding);
+        }
+    }
+
+    if (data && data->hasBindingBit(coreIndex)) {
+        binding = data->bindings;
+
+        while (binding && binding->propertyIndex() != coreIndex) 
+            binding = binding->m_nextBinding;
     }
 
+    int index = coreIndex;
+    if (valueTypeIndex != -1)
+        index |= (valueTypeIndex << 24);
+
+    if (binding && valueTypeIndex != -1 && binding->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy) 
+        binding = static_cast<QDeclarativeValueTypeProxyBinding *>(binding)->binding(index);
+
     if (binding) 
-        binding->setEnabled(false);
+        binding->removeFromObject();
 
     if (newBinding) 
-        newBinding->setEnabled(true, flags);
+        newBinding->addToObject(object, index);
 
     return binding;
 }
@@ -1392,11 +1536,26 @@ static inline int QMetaObject_methods(const QMetaObject *metaObject)
         int className;
         int classInfoCount, classInfoData;
         int methodCount, methodData;
+        int propertyCount, propertyData;
     };
 
     return reinterpret_cast<const Private *>(metaObject->d.data)->methodCount;
 }
 
+static inline int QMetaObject_properties(const QMetaObject *metaObject)
+{
+    struct Private
+    {
+        int revision;
+        int className;
+        int classInfoCount, classInfoData;
+        int methodCount, methodData;
+        int propertyCount, propertyData;
+    };
+
+    return reinterpret_cast<const Private *>(metaObject->d.data)->propertyCount;
+}
+
 static inline void flush_vme_signal(const QObject *object, int index)
 {
     QDeclarativeData *data = static_cast<QDeclarativeData *>(QObjectPrivate::get(const_cast<QObject *>(object))->declarativeData);
@@ -1437,4 +1596,19 @@ bool QDeclarativePropertyPrivate::connect(const QObject *sender, int signal_inde
     return QMetaObject::connect(sender, signal_index, receiver, method_index, type, types);
 }
 
+/*!
+Return \a metaObject's [super] meta object that provides data for \a property.
+*/
+const QMetaObject *QDeclarativePropertyPrivate::metaObjectForProperty(const QMetaObject *metaObject, int property)
+{
+    int propertyOffset = metaObject->propertyOffset();
+
+    while (propertyOffset > property) {
+        metaObject = metaObject->d.superdata;
+        propertyOffset -= QMetaObject_properties(metaObject);
+    }
+
+    return metaObject;
+}
+
 QT_END_NAMESPACE
diff --git a/src/declarative/qml/qdeclarativeproperty_p.h b/src/declarative/qml/qdeclarativeproperty_p.h
index a9d6979..6392f88 100644
--- a/src/declarative/qml/qdeclarativeproperty_p.h
+++ b/src/declarative/qml/qdeclarativeproperty_p.h
@@ -68,7 +68,7 @@ class QDeclarativeExpression;
 class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativePropertyPrivate
 {
 public:
-    enum WriteFlag { BypassInterceptor = 0x01, DontRemoveBinding = 0x02 };
+    enum WriteFlag { BypassInterceptor = 0x01, DontRemoveBinding = 0x02, RemoveBindingOnAliasWrite = 0x04 };
     Q_DECLARE_FLAGS(WriteFlags, WriteFlag)
 
     QDeclarativePropertyPrivate()
@@ -108,9 +108,13 @@ public:
                                   const QVariant &value, int flags);
     static bool write(QObject *, const QDeclarativePropertyCache::Data &, const QVariant &, 
                       QDeclarativeContextData *, WriteFlags flags = 0);
+    static void findAliasTarget(QObject *, int, QObject **, int *);
     static QDeclarativeAbstractBinding *setBinding(QObject *, int coreIndex, int valueTypeIndex /* -1 */,
                                                    QDeclarativeAbstractBinding *,
                                                    WriteFlags flags = DontRemoveBinding);
+    static QDeclarativeAbstractBinding *setBindingNoEnable(QObject *, int coreIndex, int valueTypeIndex /* -1 */,
+                                                           QDeclarativeAbstractBinding *);
+    static QDeclarativeAbstractBinding *binding(QObject *, int coreIndex, int valueTypeIndex /* -1 */);
 
     static QByteArray saveValueType(const QMetaObject *, int, 
                                     const QMetaObject *, int);
@@ -120,7 +124,6 @@ public:
     static bool equal(const QMetaObject *, const QMetaObject *);
     static bool canConvert(const QMetaObject *from, const QMetaObject *to);
 
-
     // "Public" (to QML) methods
     static QDeclarativeAbstractBinding *binding(const QDeclarativeProperty &that);
     static QDeclarativeAbstractBinding *setBinding(const QDeclarativeProperty &that,
@@ -136,6 +139,7 @@ public:
     static bool connect(const QObject *sender, int signal_index,
                         const QObject *receiver, int method_index,
                         int type = 0, int *types = 0);
+    static const QMetaObject *metaObjectForProperty(const QMetaObject *, int);
 };
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyPrivate::WriteFlags)
diff --git a/src/declarative/qml/qdeclarativepropertycache.cpp b/src/declarative/qml/qdeclarativepropertycache.cpp
index 0adcdbd..dd9a224 100644
--- a/src/declarative/qml/qdeclarativepropertycache.cpp
+++ b/src/declarative/qml/qdeclarativepropertycache.cpp
@@ -320,7 +320,6 @@ void QDeclarativePropertyCache::update(QDeclarativeEngine *engine, const QMetaOb
 {
     Q_ASSERT(engine);
     Q_ASSERT(metaObject);
-    QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
 
     clear();
 
diff --git a/src/declarative/qml/qdeclarativepropertycache_p.h b/src/declarative/qml/qdeclarativepropertycache_p.h
index 922010d..f7c5daa 100644
--- a/src/declarative/qml/qdeclarativepropertycache_p.h
+++ b/src/declarative/qml/qdeclarativepropertycache_p.h
@@ -83,6 +83,7 @@ public:
                     IsConstant        = 0x00000001,
                     IsWritable        = 0x00000002,
                     IsResettable      = 0x00000004,
+                    IsAlias           = 0x00000008,
 
                     // These are mutualy exclusive
                     IsFunction        = 0x00000010,
diff --git a/src/declarative/qml/qdeclarativesqldatabase.cpp b/src/declarative/qml/qdeclarativesqldatabase.cpp
index 42b596a..d9a5cc3 100644
--- a/src/declarative/qml/qdeclarativesqldatabase.cpp
+++ b/src/declarative/qml/qdeclarativesqldatabase.cpp
@@ -172,16 +172,23 @@ static const char* sqlerror[] = {
     return errorValue; \
 }
 
-
-static QString databaseFile(const QString& connectionName, QScriptEngine *engine)
+static QString qmlsqldatabase_databasesPath(QScriptEngine *engine)
 {
     QDeclarativeScriptEngine *qmlengine = static_cast<QDeclarativeScriptEngine*>(engine);
-    QString basename = qmlengine->offlineStoragePath
-                + QDir::separator() + QLatin1String("Databases") + QDir::separator();
-    basename += connectionName;
-    return basename;
+    return qmlengine->offlineStoragePath
+            + QDir::separator() + QLatin1String("Databases");
 }
 
+static void qmlsqldatabase_initDatabasesPath(QScriptEngine *engine)
+{
+    QDir().mkpath(qmlsqldatabase_databasesPath(engine));
+}
+
+static QString qmlsqldatabase_databaseFile(const QString& connectionName, QScriptEngine *engine)
+{
+    return qmlsqldatabase_databasesPath(engine) + QDir::separator()
+            + connectionName;
+}
 
 
 static QScriptValue qmlsqldatabase_item(QScriptContext *context, QScriptEngine *engine)
@@ -302,7 +309,7 @@ static QScriptValue qmlsqldatabase_change_version(QScriptContext *context, QScri
 
     if (ok) {
         context->thisObject().setProperty(QLatin1String("version"), to_version, QScriptValue::ReadOnly);
-        QSettings ini(databaseFile(db.connectionName(),engine)+QLatin1String(".ini"),QSettings::IniFormat);
+        QSettings ini(qmlsqldatabase_databaseFile(db.connectionName(),engine) + QLatin1String(".ini"), QSettings::IniFormat);
         ini.setValue(QLatin1String("Version"), to_version);
     }
 
@@ -348,6 +355,8 @@ static QScriptValue qmlsqldatabase_read_transaction(QScriptContext *context, QSc
 */
 static QScriptValue qmlsqldatabase_open_sync(QScriptContext *context, QScriptEngine *engine)
 {
+    qmlsqldatabase_initDatabasesPath(engine);
+
     QSqlDatabase database;
 
     QString dbname = context->argument(0).toString();
@@ -360,7 +369,7 @@ static QScriptValue qmlsqldatabase_open_sync(QScriptContext *context, QScriptEng
     md5.addData(dbname.toUtf8());
     QString dbid(QLatin1String(md5.result().toHex()));
 
-    QString basename = databaseFile(dbid,engine);
+    QString basename = qmlsqldatabase_databaseFile(dbid, engine);
     bool created = false;
     QString version = dbversion;
 
@@ -375,7 +384,6 @@ static QScriptValue qmlsqldatabase_open_sync(QScriptContext *context, QScriptEng
         } else {
             created = !QFile::exists(basename+QLatin1String(".sqlite"));
             database = QSqlDatabase::addDatabase(QLatin1String("QSQLITE"), dbid);
-            QDir().mkpath(basename);
             if (created) {
                 ini.setValue(QLatin1String("Name"), dbname);
                 if (dbcreationCallback.isFunction())
diff --git a/src/declarative/qml/qdeclarativevaluetype.cpp b/src/declarative/qml/qdeclarativevaluetype.cpp
index b9e9cec..5dc6ffd 100644
--- a/src/declarative/qml/qdeclarativevaluetype.cpp
+++ b/src/declarative/qml/qdeclarativevaluetype.cpp
@@ -109,36 +109,54 @@ void QDeclarativeValueTypeFactory::registerValueTypes()
 
 QDeclarativeValueType *QDeclarativeValueTypeFactory::valueType(int t)
 {
+    QDeclarativeValueType *rv = 0;
+
     switch (t) {
     case QVariant::Point:
-        return new QDeclarativePointValueType;
+        rv = new QDeclarativePointValueType;
+        break;
     case QVariant::PointF:
-        return new QDeclarativePointFValueType;
+        rv = new QDeclarativePointFValueType;
+        break;
     case QVariant::Size:
-        return new QDeclarativeSizeValueType;
+        rv = new QDeclarativeSizeValueType;
+        break;
     case QVariant::SizeF:
-        return new QDeclarativeSizeFValueType;
+        rv = new QDeclarativeSizeFValueType;
+        break;
     case QVariant::Rect:
-        return new QDeclarativeRectValueType;
+        rv = new QDeclarativeRectValueType;
+        break;
     case QVariant::RectF:
-        return new QDeclarativeRectFValueType;
+        rv = new QDeclarativeRectFValueType;
+        break;
     case QVariant::Vector2D:
-        return new QDeclarativeVector2DValueType;
+        rv = new QDeclarativeVector2DValueType;
+        break;
     case QVariant::Vector3D:
-        return new QDeclarativeVector3DValueType;
+        rv = new QDeclarativeVector3DValueType;
+        break;
     case QVariant::Vector4D:
-        return new QDeclarativeVector4DValueType;
+        rv = new QDeclarativeVector4DValueType;
+        break;
     case QVariant::Quaternion:
-        return new QDeclarativeQuaternionValueType;
+        rv = new QDeclarativeQuaternionValueType;
+        break;
     case QVariant::Matrix4x4:
-        return new QDeclarativeMatrix4x4ValueType;
+        rv = new QDeclarativeMatrix4x4ValueType;
+        break;
     case QVariant::EasingCurve:
-        return new QDeclarativeEasingValueType;
+        rv = new QDeclarativeEasingValueType;
+        break;
     case QVariant::Font:
-        return new QDeclarativeFontValueType;
+        rv = new QDeclarativeFontValueType;
+        break;
     default:
-        return 0;
+        break;
     }
+
+    Q_ASSERT(!rv || rv->metaObject()->propertyCount() < 32);
+    return rv;
 }
 
 QDeclarativeValueType::QDeclarativeValueType(QObject *parent)
diff --git a/src/declarative/qml/qdeclarativevme.cpp b/src/declarative/qml/qdeclarativevme.cpp
index db90aff..c742dec 100644
--- a/src/declarative/qml/qdeclarativevme.cpp
+++ b/src/declarative/qml/qdeclarativevme.cpp
@@ -154,7 +154,8 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack,
     QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(ctxt->engine);
 
     int status = -1;    //for dbus
-    QDeclarativePropertyPrivate::WriteFlags flags = QDeclarativePropertyPrivate::BypassInterceptor;
+    QDeclarativePropertyPrivate::WriteFlags flags = QDeclarativePropertyPrivate::BypassInterceptor |
+                                                    QDeclarativePropertyPrivate::RemoveBindingOnAliasWrite;
 
     for (int ii = start; !isError() && ii < (start + count); ++ii) {
         const QDeclarativeInstruction &instr = comp->bytecode.at(ii);
@@ -664,6 +665,7 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack,
             break;
 
         case QDeclarativeInstruction::StoreBinding:
+        case QDeclarativeInstruction::StoreBindingOnAlias:
             {
                 QObject *target = 
                     stack.at(stack.count() - 1 - instr.assignBinding.owner);
@@ -675,14 +677,20 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack,
 
                 int coreIndex = mp.index();
 
-                if (stack.count() == 1 && bindingSkipList.testBit(coreIndex))  
+                if ((stack.count() - instr.assignBinding.owner) == 1 && bindingSkipList.testBit(coreIndex)) 
                     break;
 
                 QDeclarativeBinding *bind = new QDeclarativeBinding((void *)datas.at(instr.assignBinding.value).constData(), comp, context, ctxt, comp->name, instr.line, 0);
                 bindValues.append(bind);
                 bind->m_mePtr = &bindValues.values[bindValues.count - 1];
                 bind->setTarget(mp);
-                bind->addToObject(target);
+
+                if (instr.type == QDeclarativeInstruction::StoreBindingOnAlias) {
+                    QDeclarativeAbstractBinding *old = QDeclarativePropertyPrivate::setBindingNoEnable(target, coreIndex, QDeclarativePropertyPrivate::valueTypeCoreIndex(mp), bind);
+                    if (old) { old->destroy(); }
+                } else {
+                    bind->addToObject(target, QDeclarativePropertyPrivate::bindingIndex(mp));
+                }
             }
             break;
 
@@ -701,7 +709,7 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack,
                     ctxt->optimizedBindings->configBinding(instr.assignBinding.value, target, scope, property);
                 bindValues.append(binding);
                 binding->m_mePtr = &bindValues.values[bindValues.count - 1];
-                binding->addToObject(target);
+                binding->addToObject(target, property);
             }
             break;
 
@@ -874,8 +882,26 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack,
         case QDeclarativeInstruction::FetchValueType:
             {
                 QObject *target = stack.top();
-                QDeclarativeValueType *valueHandler = 
-                    ep->valueTypes[instr.fetchValue.type];
+
+                if (instr.fetchValue.bindingSkipList != 0) {
+                    // Possibly need to clear bindings
+                    QDeclarativeData *targetData = QDeclarativeData::get(target);
+                    if (targetData) {
+                        QDeclarativeAbstractBinding *binding = 
+                            QDeclarativePropertyPrivate::binding(target, instr.fetchValue.property, -1);
+
+                        if (binding && binding->bindingType() != QDeclarativeAbstractBinding::ValueTypeProxy) {
+                            QDeclarativePropertyPrivate::setBinding(target, instr.fetchValue.property, -1, 0);
+                            binding->destroy();
+                        } else if (binding) {
+                            QDeclarativeValueTypeProxyBinding *proxy = 
+                                static_cast<QDeclarativeValueTypeProxyBinding *>(binding);
+                            proxy->removeBindings(instr.fetchValue.bindingSkipList);
+                        }
+                    }
+                }
+
+                QDeclarativeValueType *valueHandler = ep->valueTypes[instr.fetchValue.type];
                 valueHandler->read(target, instr.fetchValue.property);
                 stack.push(valueHandler);
             }
diff --git a/src/declarative/qml/qdeclarativevmemetaobject.cpp b/src/declarative/qml/qdeclarativevmemetaobject.cpp
index e28062b..38c1709 100644
--- a/src/declarative/qml/qdeclarativevmemetaobject.cpp
+++ b/src/declarative/qml/qdeclarativevmemetaobject.cpp
@@ -46,6 +46,7 @@
 #include "qdeclarativeexpression.h"
 #include "private/qdeclarativeexpression_p.h"
 #include "private/qdeclarativecontext_p.h"
+#include "private/qdeclarativebinding_p.h"
 
 Q_DECLARE_METATYPE(QScriptValue);
 
@@ -589,7 +590,21 @@ int QDeclarativeVMEMetaObject::metaCall(QMetaObject::Call c, int _id, void **a)
                 if (d->isObjectAlias()) {
                     *reinterpret_cast<QObject **>(a[0]) = target;
                     return -1;
-                } else if (d->isValueTypeAlias()) {
+                } 
+                
+                // Remove binding (if any) on write
+                if(c == QMetaObject::WriteProperty) {
+                    int flags = *reinterpret_cast<int*>(a[3]);
+                    if (flags & QDeclarativePropertyPrivate::RemoveBindingOnAliasWrite) {
+                        QDeclarativeData *targetData = QDeclarativeData::get(target);
+                        if (targetData && targetData->hasBindingBit(d->propertyIndex())) {
+                            QDeclarativeAbstractBinding *binding = QDeclarativePropertyPrivate::setBinding(target, d->propertyIndex(), d->isValueTypeAlias()?d->valueTypeIndex():-1, 0);
+                            if (binding) binding->destroy();
+                        }
+                    }
+                }
+                
+                if (d->isValueTypeAlias()) {
                     // Value type property
                     QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(ctxt->engine);
 
@@ -821,6 +836,36 @@ void QDeclarativeVMEMetaObject::setVMEProperty(int index, const QScriptValue &v)
     return writeVarProperty(index - propOffset, v);
 }
 
+bool QDeclarativeVMEMetaObject::aliasTarget(int index, QObject **target, int *coreIndex, int *valueTypeIndex) const
+{
+    Q_ASSERT(index >= propOffset + metaData->propertyCount);
+
+    *target = 0;
+    *coreIndex = -1;
+    *valueTypeIndex = -1;
+
+    if (!ctxt)
+        return false;
+
+    QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + (index - propOffset - metaData->propertyCount);
+    QDeclarativeContext *context = ctxt->asQDeclarativeContext();
+    QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
+
+    *target = ctxtPriv->data->idValues[d->contextIdx].data();
+    if (!*target)
+        return false;
+
+    if (d->isObjectAlias()) {
+    } else if (d->isValueTypeAlias()) {
+        *coreIndex = d->propertyIndex();
+        *valueTypeIndex = d->valueTypeIndex();
+    } else {
+        *coreIndex = d->propertyIndex();
+    }
+
+    return true;
+}
+
 void QDeclarativeVMEMetaObject::connectAlias(int aliasId)
 {
     if (!aConnected.testBit(aliasId)) {
diff --git a/src/declarative/qml/qdeclarativevmemetaobject_p.h b/src/declarative/qml/qdeclarativevmemetaobject_p.h
index 5134763..7b6b410 100644
--- a/src/declarative/qml/qdeclarativevmemetaobject_p.h
+++ b/src/declarative/qml/qdeclarativevmemetaobject_p.h
@@ -138,6 +138,7 @@ public:
                      QDeclarativeCompiledData *compiledData);
     ~QDeclarativeVMEMetaObject();
 
+    bool aliasTarget(int index, QObject **target, int *coreIndex, int *valueTypeIndex) const;
     void registerInterceptor(int index, int valueIndex, QDeclarativePropertyValueInterceptor *interceptor);
     QScriptValue vmeMethod(int index);
     int vmeMethodLineNumber(int index);
@@ -146,6 +147,7 @@ public:
     void setVMEProperty(int index, const QScriptValue &);
 
     void connectAliasSignal(int index);
+
 protected:
     virtual int metaCall(QMetaObject::Call _c, int _id, void **_a);
 
diff --git a/src/declarative/qml/qdeclarativeworkerscript.cpp b/src/declarative/qml/qdeclarativeworkerscript.cpp
index 75cc6f9..2699bd2 100644
--- a/src/declarative/qml/qdeclarativeworkerscript.cpp
+++ b/src/declarative/qml/qdeclarativeworkerscript.cpp
@@ -458,7 +458,7 @@ QDeclarativeWorkerScriptEngine::QDeclarativeWorkerScriptEngine(QDeclarativeEngin
 {
     d->m_lock.lock();
     connect(d, SIGNAL(stopThread()), this, SLOT(quit()), Qt::DirectConnection);
-    start(QThread::LowPriority);
+    start(QThread::IdlePriority);
     d->m_wait.wait(&d->m_lock);
     d->moveToThread(this);
     d->m_lock.unlock();