QmlDesigner.NodeInstances: Add ChildrenChangedCommand

Because the order of the commands can be changed the reparenting was
changed. Now there is a command with the exact order of child items so
it should be much more correct.

src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp

@@ -339,9 +339,8 @@ void FormEditorScene::reparentItem(const QmlItemNode &node, const QmlItemNode &n
     if (newParent.isValid() && hasItemForQmlItemNode(newParent))
         parentItem = itemForQmlItemNode(newParent);
 
-    if (item->parentItem() != parentItem) {
-        item->setParentItem(parentItem);
-    }
+    item->setParentItem(0);
+    item->setParentItem(parentItem);
 }
 
 FormEditorItem* FormEditorScene::rootFormEditorItem() const

src/plugins/qmldesigner/components/formeditor/formeditorview.cpp

@@ -456,9 +456,8 @@ void FormEditorView::customNotification(const AbstractView *view, const QString
         foreach (const ModelNode &node, nodeList) {
             QmlItemNode qmlItemNode(node);
             if (qmlItemNode.isValid() && scene()->hasItemForQmlItemNode(qmlItemNode)) {
-                scene()->synchronizeParent(qmlItemNode);
                 scene()->synchronizeTransformation(qmlItemNode);
-               itemNodeList.append(scene()->itemForQmlItemNode(qmlItemNode));
+                itemNodeList.append(scene()->itemForQmlItemNode(qmlItemNode));
             }
         }
 
@@ -477,6 +476,20 @@ void FormEditorView::customNotification(const AbstractView *view, const QString
         }
     }
 
+    if (identifier == "__instance children changed__") {
+        QList<FormEditorItem*> itemNodeList;
+
+        foreach (const ModelNode &node, nodeList) {
+            QmlItemNode qmlItemNode(node);
+            if (qmlItemNode.isValid() && scene()->hasItemForQmlItemNode(qmlItemNode)) {
+                scene()->synchronizeParent(qmlItemNode);
+                itemNodeList.append(scene()->itemForQmlItemNode(qmlItemNode));
+            }
+        }
+
+        m_currentTool->formEditorItemsChanged(itemNodeList);
+    }
+
     QmlModelView::customNotification(view, identifier, nodeList, data);
 }
 

src/plugins/qmldesigner/designercore/designercore.pri

@@ -118,7 +118,8 @@ SOURCES += $$PWD/model/abstractview.cpp \
     $$PWD/instances/changestatecommand.cpp \
     $$PWD/instances/nodeinstanceserverproxy.cpp \
     $$PWD/instances/nodeinstanceclientproxy.cpp \
-    $$PWD/instances/addimportcommand.cpp
+    $$PWD/instances/addimportcommand.cpp \
+    $$PWD/instances/childrenchangedcommand.cpp
 HEADERS += $$PWD/include/corelib_global.h \
     $$PWD/include/abstractview.h \
     $$PWD/include/nodeinstanceview.h \
@@ -235,7 +236,8 @@ HEADERS += $$PWD/include/corelib_global.h \
     $$PWD/instances/changestatecommand.h \
     $$PWD/instances/nodeinstanceserverproxy.h \
     $$PWD/instances/nodeinstanceclientproxy.h \
-    $$PWD/instances/addimportcommand.h
+    $$PWD/instances/addimportcommand.h \
+    $$PWD/instances/childrenchangedcommand.h
 
 contains(CONFIG, plugin) {
   # If core.pri has been included in the qmldesigner plugin

src/plugins/qmldesigner/designercore/include/commondefines.h

@@ -23,8 +23,7 @@ enum InformationName
     IsAnchoredByChildren,
     IsAnchoredBySibling,
     HasContent,
-    HasBindingForProperty,
-    Parent
+    HasBindingForProperty
 };
 
 }

src/plugins/qmldesigner/designercore/include/nodeinstance.h

@@ -56,6 +56,8 @@ protected:
                         const QVariant &information,
                         const QVariant &secondInformation,
                         const QVariant &thirdInformation);
+
+    void setParentId(qint32 instanceId);
     void setRenderImage(const QImage &image);
     NodeInstance(ProxyNodeInstanceData *d);
     qint32 instanceId() const;

src/plugins/qmldesigner/designercore/include/nodeinstanceclientinterface.h

@@ -8,6 +8,7 @@ namespace QmlDesigner {
 class ValuesChangedCommand;
 class PixmapChangedCommand;
 class InformationChangedCommand;
+class ChildrenChangedCommand;
 
 class NodeInstanceClientInterface
 {
@@ -15,6 +16,8 @@ public:
     virtual void informationChanged(const InformationChangedCommand &command) = 0;
     virtual void valuesChanged(const ValuesChangedCommand &command) = 0;
     virtual void pixmapChanged(const PixmapChangedCommand &command) = 0;
+    virtual void childrenChanged(const ChildrenChangedCommand &command) = 0;
+
     virtual void flush() {};
     virtual qint64 bytesToWrite() const {return 0;}
 

src/plugins/qmldesigner/designercore/include/nodeinstanceview.h

@@ -115,6 +115,7 @@ public:
     void valuesChanged(const ValuesChangedCommand &command);
     void pixmapChanged(const PixmapChangedCommand &command);
     void informationChanged(const InformationChangedCommand &command);
+    void childrenChanged(const ChildrenChangedCommand &command);
 
 private: // functions
     NodeInstance rootNodeInstance() const;
@@ -166,11 +167,6 @@ private: //variables
     QHash<ModelNode, NodeInstance> m_nodeInstanceHash;
     QHash<qint32, NodeInstance> m_idInstanceHash; // This is purely internal. Might contain dangling pointers!
 
-    QList<QPair<ModelNode, QString> > m_valuePropertyChangeList;
-
-    QSet<ModelNode> m_renderImageChangeSet;
-    QSet<ModelNode> m_informationChangeSet;
-
     uint m_blockUpdates;
     QWeakPointer<NodeInstanceServerInterface> m_nodeInstanceServer;
     qint32 m_instanceIdCounter;

src/plugins/qmldesigner/designercore/instances/childrenchangedcommand.cpp

+#include "childrenchangedcommand.h"
+
+namespace QmlDesigner {
+
+ChildrenChangedCommand::ChildrenChangedCommand()
+    : m_parentInstanceId(-1)
+{
+}
+
+ChildrenChangedCommand::ChildrenChangedCommand(qint32 parentInstanceId, const QVector<qint32> &children)
+    : m_parentInstanceId(parentInstanceId),
+      m_childrenVector(children)
+{
+}
+
+QVector<qint32> ChildrenChangedCommand::childrenInstances() const
+{
+    return m_childrenVector;
+}
+
+qint32 ChildrenChangedCommand::parentInstanceId() const
+{
+    return m_parentInstanceId;
+}
+
+QDataStream &operator<<(QDataStream &out, const ChildrenChangedCommand &command)
+{
+    out << command.parentInstanceId();
+    out << command.childrenInstances();
+
+    return out;
+}
+
+QDataStream &operator>>(QDataStream &in, ChildrenChangedCommand &command)
+{
+    in >> command.m_parentInstanceId;
+    in >> command.m_childrenVector;
+
+    return in;
+}
+
+} // namespace QmlDesigner

src/plugins/qmldesigner/designercore/instances/childrenchangedcommand.h

+#ifndef CHILDRENCHANGEDCOMMAND_H
+#define CHILDRENCHANGEDCOMMAND_H
+
+#include <QMetaType>
+#include <QVector>
+
+
+namespace QmlDesigner {
+
+class ChildrenChangedCommand
+{
+    friend QDataStream &operator>>(QDataStream &in, ChildrenChangedCommand &command);
+public:
+    ChildrenChangedCommand();
+    ChildrenChangedCommand(qint32 parentInstanceId, const QVector<qint32> &childrenInstances);
+
+    QVector<qint32> childrenInstances() const;
+    qint32 parentInstanceId() const;
+
+private:
+    qint32 m_parentInstanceId;
+    QVector<qint32> m_childrenVector;
+};
+
+QDataStream &operator<<(QDataStream &out, const ChildrenChangedCommand &command);
+QDataStream &operator>>(QDataStream &in, ChildrenChangedCommand &command);
+
+} // namespace QmlDesigner
+
+Q_DECLARE_METATYPE(QmlDesigner::ChildrenChangedCommand);
+
+#endif // CHILDRENCHANGEDCOMMAND_H

src/plugins/qmldesigner/designercore/instances/graphicsobjectnodeinstance.cpp

@@ -60,6 +60,20 @@ bool GraphicsObjectNodeInstance::hasContent() const
     return m_hasContent;
 }
 
+QList<ServerNodeInstance> GraphicsObjectNodeInstance::childItems() const
+{
+    QList<ServerNodeInstance> instanceList;
+    foreach(QGraphicsItem *item, graphicsObject()->childItems())
+    {
+        QGraphicsObject *childObject = item->toGraphicsObject();
+        if (childObject && nodeInstanceServer()->hasInstanceForObject(childObject)) {
+            instanceList.append(nodeInstanceServer()->instanceForObject(childObject));
+        }
+    }
+
+    return instanceList;
+}
+
 void GraphicsObjectNodeInstance::setHasContent(bool hasContent)
 {
     m_hasContent = hasContent;

src/plugins/qmldesigner/designercore/instances/graphicsobjectnodeinstance.h

@@ -71,6 +71,7 @@ public:
 
     bool hasContent() const;
 
+    QList<ServerNodeInstance> childItems() const;
 
     void paintUpdate();
 

src/plugins/qmldesigner/designercore/instances/instances.pri

@@ -3,6 +3,7 @@ INCLUDEPATH += $$PWD/../include
 
 
 HEADERS += $$PWD/behaviornodeinstance.h
+HEADERS += $$PWD/childrenchangedcommand.h
 HEADERS += $$PWD/addimportcommand.h
 HEADERS += $$PWD/changebindingscommand.h
 HEADERS += $$PWD/changefileurlcommand.h
@@ -42,6 +43,7 @@ HEADERS += $$PWD/../include/nodeinstanceserverinterface.h
 
 
 SOURCES +=  $$PWD/behaviornodeinstance.cpp
+SOURCES +=  $$PWD/childrenchangedcommand.cpp
 SOURCES +=  $$PWD/addimportcommand.cpp
 SOURCES +=  $$PWD/changebindingscommand.cpp
 SOURCES +=  $$PWD/changefileurlcommand.cpp

src/plugins/qmldesigner/designercore/instances/nodeinstance.cpp

@@ -283,6 +283,11 @@ void NodeInstance::setRenderImage(const QImage &image)
     d->renderImage = image;
 }
 
+void NodeInstance::setParentId(qint32 instanceId)
+{
+    d->parentInstanceId = instanceId;
+}
+
 void NodeInstance::setInformation(InformationName name, const QVariant &information, const QVariant &secondInformation, const QVariant &thirdInformation)
 {
     switch (name) {
@@ -302,7 +307,6 @@ void NodeInstance::setInformation(InformationName name, const QVariant &informat
     case Anchor: d->anchors.insert(information.toString(), qMakePair(secondInformation.toString(), thirdInformation.value<qint32>())); break;
     case InstanceTypeForProperty: d->instanceTypes.insert(information.toString(), secondInformation.toString()); break;
     case HasBindingForProperty: d->hasBindingForProperty.insert(information.toString(), secondInformation.toBool()); break;
-    case Parent: d->parentInstanceId = information.toInt();
     case NoName:
     default: break;
     }

src/plugins/qmldesigner/designercore/instances/nodeinstanceclientproxy.cpp

@@ -27,6 +27,7 @@
 #include "informationchangedcommand.h"
 #include "pixmapchangedcommand.h"
 #include "valueschangedcommand.h"
+#include "childrenchangedcommand.h"
 
 namespace QmlDesigner {
 
@@ -70,6 +71,11 @@ void NodeInstanceClientProxy::pixmapChanged(const PixmapChangedCommand &command)
   writeCommand(QVariant::fromValue(command));
 }
 
+void NodeInstanceClientProxy::childrenChanged(const ChildrenChangedCommand &command)
+{
+  writeCommand(QVariant::fromValue(command));
+}
+
 void NodeInstanceClientProxy::flush()
 {
 }

src/plugins/qmldesigner/designercore/instances/nodeinstanceclientproxy.h

@@ -23,6 +23,7 @@ public:
     void informationChanged(const InformationChangedCommand &command);
     void valuesChanged(const ValuesChangedCommand &command);
     void pixmapChanged(const PixmapChangedCommand &command);
+    void childrenChanged(const ChildrenChangedCommand &command);
     void flush();
     qint64 bytesToWrite() const;
 

src/plugins/qmldesigner/designercore/instances/nodeinstanceserver.cpp

@@ -35,6 +35,7 @@
 #include "childrenchangeeventfilter.h"
 #include "changestatecommand.h"
 #include "addimportcommand.h"
+#include "childrenchangedcommand.h"
 
 #include <iostream>
 #include <stdio.h>
@@ -244,7 +245,9 @@ void NodeInstanceServer::addImport(const AddImportCommand &command)
         engine()->addPluginPath(importPath);
     }
 
-    importComponent.setData(componentString.toLatin1(), QUrl());
+    qDebug() << __FUNCTION__ << fileUrl().resolved(QUrl("content/samegame.js")) << componentString;
+
+    importComponent.setData(componentString.toUtf8(), QUrl());
 
     if (!importComponent.errorString().isEmpty())
         qDebug() << "QmlDesigner.NodeInstances: import wrong: " << importComponent.errorString();
@@ -509,6 +512,36 @@ NodeInstanceClientInterface *NodeInstanceServer::nodeInstanceClient() const
     return m_nodeInstanceClient;
 }
 
+void NodeInstanceServer::sendChildrenChangedCommand(const QList<ServerNodeInstance> childList)
+{
+    QSet<ServerNodeInstance> parentSet;
+    QList<ServerNodeInstance> noParentList;
+
+    foreach (const ServerNodeInstance &child, childList) {
+        if (!child.hasParent())
+            noParentList.append(child);
+        parentSet.insert(child.parent());
+    }
+
+
+    foreach (const ServerNodeInstance &parent, parentSet)
+        nodeInstanceClient()->childrenChanged(createChildrenChangedCommand(parent, parent.childItems()));
+
+    if (!noParentList.isEmpty())
+        nodeInstanceClient()->childrenChanged(createChildrenChangedCommand(ServerNodeInstance(), noParentList));
+
+}
+
+ChildrenChangedCommand NodeInstanceServer::createChildrenChangedCommand(const ServerNodeInstance &parentInstance, const QList<ServerNodeInstance> &instanceList) const
+{
+    QVector<qint32> instanceVector;
+
+    foreach(const ServerNodeInstance &instance, instanceList)
+        instanceVector.append(instance.instanceId());
+
+    return ChildrenChangedCommand(parentInstance.instanceId(), instanceVector);
+}
+
 InformationChangedCommand NodeInstanceServer::createAllInformationChangedCommand(const QList<ServerNodeInstance> &instanceList, bool initial) const
 {
     QVector<InformationContainer> informationVector;
@@ -525,7 +558,6 @@ InformationChangedCommand NodeInstanceServer::createAllInformationChangedCommand
         informationVector.append(InformationContainer(instance.instanceId(), IsResizable, instance.isResizable()));
         informationVector.append(InformationContainer(instance.instanceId(), IsInPositioner, instance.isInPositioner()));
         informationVector.append(InformationContainer(instance.instanceId(), PenWidth, instance.penWidth()));
-        informationVector.append(InformationContainer(instance.instanceId(), Parent, instance.parent().instanceId()));
         informationVector.append(InformationContainer(instance.instanceId(), IsAnchoredByChildren, instance.isAnchoredByChildren()));
         informationVector.append(InformationContainer(instance.instanceId(), IsAnchoredBySibling, instance.isAnchoredBySibling()));
 
@@ -666,7 +698,7 @@ bool NodeInstanceServer::nonInstanceChildIsDirty(QGraphicsObject *graphicsObject
                 continue;
 
             QGraphicsItemPrivate *childPrivate = QGraphicsItemPrivate::get(child);
-            if (childPrivate->dirty || childPrivate->dirtyChildren || nonInstanceChildIsDirty(childGraphicsObject))
+            if (childPrivate->dirty || nonInstanceChildIsDirty(childGraphicsObject))
                 return true;
         }
     }
@@ -693,6 +725,7 @@ void NodeInstanceServer::findItemChangesAndSendChangeCommands()
         QSet<ServerNodeInstance> dirtyInstanceSet;
         QSet<ServerNodeInstance> informationChangedInstanceSet;
         QVector<InstancePropertyPair> propertyChangedList;
+        QSet<ServerNodeInstance> parentChangedSet;
         bool adjustSceneRect = false;
 
         if (m_declarativeView) {
@@ -731,6 +764,7 @@ void NodeInstanceServer::findItemChangesAndSendChangeCommands()
 
                 if (propertyName == "parent") {
                     informationChangedInstanceSet.insert(instance);
+                    parentChangedSet.insert(instance);
                 } else {
                     propertyChangedList.append(property);
                 }
@@ -739,9 +773,13 @@ void NodeInstanceServer::findItemChangesAndSendChangeCommands()
             m_changedPropertyList.clear();
             resetAllItems();
 
+            if (!parentChangedSet.isEmpty())
+                sendChildrenChangedCommand(parentChangedSet.toList());
+
             if (!informationChangedInstanceSet.isEmpty())
                 nodeInstanceClient()->informationChanged(createAllInformationChangedCommand(informationChangedInstanceSet.toList()));
 
+
             if (!propertyChangedList.isEmpty())
                 nodeInstanceClient()->valuesChanged(createValuesChangedCommand(propertyChangedList));
 

src/plugins/qmldesigner/designercore/instances/nodeinstanceserver.h

@@ -21,6 +21,7 @@ class NodeInstanceClientInterface;
 class ValuesChangedCommand;
 class PixmapChangedCommand;
 class InformationChangedCommand;
+class ChildrenChangedCommand;
 
 namespace Internal {
     class ChildrenChangeEventFilter;
@@ -102,6 +103,9 @@ protected:
     ValuesChangedCommand createValuesChangedCommand(const QVector<InstancePropertyPair> &propertyList) const;
     PixmapChangedCommand createPixmapChangedCommand(const ServerNodeInstance &instance) const;
     InformationChangedCommand createAllInformationChangedCommand(const QList<ServerNodeInstance> &instanceList, bool initial = false) const;
+    ChildrenChangedCommand createChildrenChangedCommand(const ServerNodeInstance &parentInstance, const QList<ServerNodeInstance> &instanceList) const;
+
+    void sendChildrenChangedCommand(const QList<ServerNodeInstance> childList);
 
     void addChangedProperty(const InstancePropertyPair &property);
 

src/plugins/qmldesigner/designercore/instances/nodeinstanceserverinterface.cpp

@@ -21,6 +21,7 @@
 #include "pixmapchangedcommand.h"
 #include "valueschangedcommand.h"
 #include "addimportcommand.h"
+#include "childrenchangedcommand.h"
 
 namespace QmlDesigner {
 
@@ -104,6 +105,9 @@ void NodeInstanceServerInterface::registerCommands()
 
     qRegisterMetaType<AddImportCommand>("AddImportCommand");
     qRegisterMetaTypeStreamOperators<AddImportCommand>("AddImportCommand");
+
+    qRegisterMetaType<ChildrenChangedCommand>("ChildrenChangedCommand");
+    qRegisterMetaTypeStreamOperators<ChildrenChangedCommand>("ChildrenChangedCommand");
 }
 
 }

src/plugins/qmldesigner/designercore/instances/nodeinstanceserverproxy.cpp

@@ -26,6 +26,7 @@
 #include "informationchangedcommand.h"
 #include "pixmapchangedcommand.h"
 #include "valueschangedcommand.h"
+#include "childrenchangedcommand.h"
 
 #include "nodeinstanceview.h"
 #include "nodeinstanceclientproxy.h"
@@ -73,6 +74,7 @@ void NodeInstanceServerProxy::dispatchCommand(const QVariant &command)
     static const int informationChangedCommandType = QMetaType::type("InformationChangedCommand");
     static const int valuesChangedCommandType = QMetaType::type("ValuesChangedCommand");
     static const int pixmapChangedCommandType = QMetaType::type("PixmapChangedCommand");
+    static const int childrenChangedCommandType = QMetaType::type("ChildrenChangedCommand");
 
     if (command.userType() ==  informationChangedCommandType)
         nodeInstanceClient()->informationChanged(command.value<InformationChangedCommand>());
@@ -80,6 +82,8 @@ void NodeInstanceServerProxy::dispatchCommand(const QVariant &command)
         nodeInstanceClient()->valuesChanged(command.value<ValuesChangedCommand>());
     else if (command.userType() ==  pixmapChangedCommandType)
         nodeInstanceClient()->pixmapChanged(command.value<PixmapChangedCommand>());
+    else if (command.userType() == childrenChangedCommandType)
+        nodeInstanceClient()->childrenChanged(command.value<ChildrenChangedCommand>());
     else
         Q_ASSERT(false);
 }

src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp

@@ -71,6 +71,7 @@
 #include "informationchangedcommand.h"
 #include "changestatecommand.h"
 #include "addimportcommand.h"
+#include "childrenchangedcommand.h"
 
 #include "nodeinstanceserverproxy.h"
 
@@ -105,8 +106,7 @@ d too.
 \see ~NodeInstanceView setRenderOffScreen
 */
 NodeInstanceView::NodeInstanceView(QObject *parent)
-        : AbstractView(parent),
-          m_blockUpdates(false)
+        : AbstractView(parent)
 {
 }
 
@@ -162,9 +162,6 @@ void NodeInstanceView::restartProcess()
     Model *oldModel = model();
     if (oldModel) {
         oldModel->detachView(this);
-        m_valuePropertyChangeList.clear();
-        m_renderImageChangeSet.clear();
-        m_informationChangeSet.clear();
         oldModel->attachView(this);
     }
     setBlockUpdates(false);
@@ -610,24 +607,6 @@ void NodeInstanceView::setBlockUpdates(bool block)
     } else if (m_blockUpdates > 0) {
         m_blockUpdates--;
     }
-
-    if (m_blockUpdates == 0) {
-        m_nodeInstanceServer->setBlockUpdates(false);
-        if (!m_informationChangeSet.isEmpty()) {
-            emitCustomNotification("__instance information changed__", m_informationChangeSet.toList());
-            m_informationChangeSet.clear();
-        }
-
-        if (!m_valuePropertyChangeList.isEmpty()) {
-            emitInstancePropertyChange(m_valuePropertyChangeList);
-            m_valuePropertyChangeList.clear();
-        }
-
-        if (!m_renderImageChangeSet.isEmpty()) {
-            emitCustomNotification("__instance render pixmap changed__", m_renderImageChangeSet.toList());
-            m_renderImageChangeSet.clear();
-        }
-    }
 }
 
 void NodeInstanceView::setStateInstance(const NodeInstance &stateInstance)
@@ -865,57 +844,71 @@ AddImportCommand NodeInstanceView::createImportCommand(const Import &import)
 
 void NodeInstanceView::valuesChanged(const ValuesChangedCommand &command)
 {
+    QList<QPair<ModelNode, QString> > valuePropertyChangeList;
+
     foreach(const PropertyValueContainer &container, command.valueChanges()) {
         if (hasInstanceForId(container.instanceId())) {
             NodeInstance instance = instanceForId(container.instanceId());
             if (instance.isValid()) {
                 instance.setProperty(container.name(), container.value());
-                m_valuePropertyChangeList.append(qMakePair(instance.modelNode(), container.name()));
+                valuePropertyChangeList.append(qMakePair(instance.modelNode(), container.name()));
             }
         }
     }
 
-    if (!m_blockUpdates && !m_valuePropertyChangeList.isEmpty()) {
-        emitInstancePropertyChange(m_valuePropertyChangeList);
-        m_valuePropertyChangeList.clear();
-    }
+    if (!valuePropertyChangeList.isEmpty())
+        emitInstancePropertyChange(valuePropertyChangeList);
 }
 
 void NodeInstanceView::pixmapChanged(const PixmapChangedCommand &command)
 {            
+    QSet<ModelNode> renderImageChangeSet;
 
     if (hasInstanceForId(command.instanceId())) {
         NodeInstance instance = instanceForId(command.instanceId());
         if (instance.isValid()) {
             instance.setRenderImage(command.renderImage());
-            m_renderImageChangeSet.insert(instance.modelNode());
+            renderImageChangeSet.insert(instance.modelNode());
         }
     }
 
-    if (!m_blockUpdates && !m_renderImageChangeSet.isEmpty()) {
-         emitCustomNotification("__instance render pixmap changed__", m_renderImageChangeSet.toList());
-         m_renderImageChangeSet.clear();
-    }
+    if (!renderImageChangeSet.isEmpty())
+         emitCustomNotification("__instance render pixmap changed__", renderImageChangeSet.toList());
 }
 
 void NodeInstanceView::informationChanged(const InformationChangedCommand &command)
 {
+    QList<ModelNode> informationChangedList;
+
     foreach(const InformationContainer &container, command.informations()) {
         if (hasInstanceForId(container.instanceId())) {
             NodeInstance instance = instanceForId(container.instanceId());
             if (instance.isValid()) {
                 instance.setInformation(container.name(), container.information(), container.secondInformation(), container.thirdInformation());
-                m_informationChangeSet.insert(instance.modelNode());
+                informationChangedList.append(instance.modelNode());
             }
         }
     }
 
-    if (!m_blockUpdates && !m_informationChangeSet.isEmpty()) {
-        emitCustomNotification("__instance information changed__", m_informationChangeSet.toList());
-        m_informationChangeSet.clear();
-    }
+    if (!informationChangedList.isEmpty())
+        emitCustomNotification("__instance information changed__", informationChangedList);
 }
 
+void NodeInstanceView::childrenChanged(const ChildrenChangedCommand &command)
+{
+    QList<ModelNode> childNodeList;
+
+    foreach(qint32 instanceId, command.childrenInstances()) {
+        if (hasInstanceForId(instanceId)) {
+            NodeInstance instance = instanceForId(instanceId);
+            instance.setParentId(command.parentInstanceId());
+            childNodeList.append(instance.modelNode());
+        }
+    }
+
+    if (!childNodeList.isEmpty())
+        emitCustomNotification("__instance children changed__", childNodeList);
+}
 
 qint32 NodeInstanceView::generateInstanceId()
 {

src/plugins/qmldesigner/designercore/instances/objectnodeinstance.cpp

@@ -604,6 +604,10 @@ QString ObjectNodeInstance::instanceType(const QString &name) const
     return property.propertyTypeName();
 }
 
+QList<ServerNodeInstance> ObjectNodeInstance::childItems() const
+{
+    return QList<ServerNodeInstance>();
+}
 
 void ObjectNodeInstance::setDeleteHeldInstance(bool deleteInstance)
 {