Let the designer start nodes which have invalid meta info

This is only a workaround!

src/plugins/qmldesigner/components/integration/componentview.cpp

@@ -116,7 +116,7 @@ void ComponentView::searchForComponentAndAddToList(const ModelNode &node)
                 item->setEditable(false);
                 m_standardItemModel->appendRow(item);
             }
-        } else if (node.metaInfo().isComponent() && !m_componentList.contains(node.type())) {
+        } else if (node.metaInfo().isValid() && node.metaInfo().isComponent() && !m_componentList.contains(node.type())) {
             m_componentList.append(node.type());
             m_componentList.sort();
             m_listChanged = true;

src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp

@@ -190,7 +190,7 @@ NavigatorTreeModel::ItemRow NavigatorTreeModel::createItemRow(const ModelNode &n
 
     QStandardItem *idItem = new QStandardItem;
     idItem->setDragEnabled(true);
-    idItem->setDropEnabled(node.metaInfo().isContainer());
+    idItem->setDropEnabled(node.metaInfo().isValid() && node.metaInfo().isContainer());
     idItem->setEditable(true);
     idItem->setData(hash, Qt::UserRole);
 
@@ -204,7 +204,7 @@ NavigatorTreeModel::ItemRow NavigatorTreeModel::createItemRow(const ModelNode &n
     #endif
 
     QStandardItem *visibilityItem = new QStandardItem;
-    visibilityItem->setDropEnabled(node.metaInfo().isContainer());
+    visibilityItem->setDropEnabled(node.metaInfo().isValid() && node.metaInfo().isContainer());
     visibilityItem->setCheckable(true);
     visibilityItem->setEditable(false);
     visibilityItem->setData(hash, Qt::UserRole);

src/plugins/qmldesigner/components/navigator/navigatortreeview.cpp

@@ -165,7 +165,9 @@ void IdItemDelegate::paint(QPainter *painter,
 
     ModelNode node = m_TreeModel->nodeForIndex(index);
 
-    QIcon icon=node.metaInfo().icon();
+    QIcon icon;
+    if (node.metaInfo().isValid()) {
+        icon=node.metaInfo().icon();
         if (icon.isNull())
         {
             // if node has no own icon, search for it in the itemlibrary
@@ -179,8 +181,12 @@ void IdItemDelegate::paint(QPainter *painter,
             }
 
             // if the library was also empty, use the default icon
-        if (icon.isNull()) icon = QIcon(":/ItemLibrary/images/item-default-icon.png");
         }
+    }
+
+    if (icon.isNull())
+        icon = QIcon(":/ItemLibrary/images/item-default-icon.png");
+
 
     // If no icon is present, leave an empty space of 24 pixels anyway
     int pixmapSide = 16;

src/plugins/qmldesigner/core/instances/dummynodeinstance.cpp

@@ -38,16 +38,12 @@ namespace QmlDesigner {
 namespace Internal {
 
 DummyNodeInstance::DummyNodeInstance()
-   : ObjectNodeInstance(0)
+   : ObjectNodeInstance(new QObject)
 {
 }
 
-DummyNodeInstance::Pointer DummyNodeInstance::create(const NodeMetaInfo & metaInfo, QDeclarativeContext *context)
+DummyNodeInstance::Pointer DummyNodeInstance::create()
 {
-    Q_UNUSED(context);
-    qWarning() << "DummyNodeInstance created" << metaInfo.typeName();
-    foreach(const NodeMetaInfo &metaInfo, metaInfo.superClasses())
-        qWarning() << "\t" << metaInfo.typeName();
     return Pointer(new DummyNodeInstance);
 }
 
@@ -104,17 +100,10 @@ QStringList DummyNodeInstance::localProperties()
     return QStringList();
 }
 
-bool DummyNodeInstance::isVisible() const
+void DummyNodeInstance::initializePropertyWatcher(const ObjectNodeInstance::Pointer &/*objectNodeInstance*/)
 {
-    return false;
-}
 
-void DummyNodeInstance::setVisible(bool /*isVisible*/)
-{
-    Q_ASSERT_X(0, Q_FUNC_INFO, "Cannot set a dummy node instance to visible/non-visible");
-    throw InvalidNodeInstanceException(__LINE__, __FUNCTION__, __FILE__);
 }
 
-
 } // namespace Internal
 } // namespace QmlDesigner

src/plugins/qmldesigner/core/instances/dummynodeinstance.h

@@ -43,7 +43,7 @@ public:
     typedef QSharedPointer<DummyNodeInstance> Pointer;
     typedef QWeakPointer<DummyNodeInstance> WeakPointer;
 
-    static Pointer create(const NodeMetaInfo &metaInfo, QDeclarativeContext *context);
+    static Pointer create();
 
     void paint(QPainter *painter) const;
 
@@ -56,12 +56,12 @@ public:
     double opacity() const;
 
     void setPropertyVariant(const QString &name, const QVariant &value);
+    void setBindingProperty(const QString &name, const QString &expression);
     QVariant property(const QString &name) const;
     QStringList properties();
     QStringList localProperties();
 
-    bool isVisible() const;
+    void initializePropertyWatcher(const ObjectNodeInstance::Pointer &objectNodeInstance);
-    void setVisible(bool isVisible);
 
 protected:
     DummyNodeInstance();

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

@@ -132,7 +132,13 @@ Internal::ObjectNodeInstance::Pointer NodeInstance::createInstance(const NodeMet
 {
     Internal::ObjectNodeInstance::Pointer instance;
 
-    if (metaInfo.isSubclassOf("Qt/QGraphicsView", 4, 6))
+    if (!metaInfo.isValid())
+        instance = Internal::DummyNodeInstance::create();
+    else if (metaInfo.isSubclassOf("org.webkit/WebView", 1, 0))
+        instance = Internal::DummyNodeInstance::create();
+    else if (metaInfo.isSubclassOf("Qt/QWidget", 4, 6))
+        instance = Internal::DummyNodeInstance::create();
+    else if (metaInfo.isSubclassOf("Qt/QGraphicsView", 4, 6))
         instance = Internal::GraphicsViewNodeInstance::create(metaInfo, context, objectToBeWrapped);
     else if (metaInfo.isSubclassOf("Qt/QDeclarativeView", 4, 6))
         instance = Internal::QDeclarativeViewNodeInstance::create(metaInfo, context, objectToBeWrapped);
@@ -140,8 +146,6 @@ Internal::ObjectNodeInstance::Pointer NodeInstance::createInstance(const NodeMet
         instance = Internal::GraphicsWidgetNodeInstance::create(metaInfo, context, objectToBeWrapped);
     else if (metaInfo.isSubclassOf("Qt/Item", 4, 6))
         instance = Internal::QmlGraphicsItemNodeInstance::create(metaInfo, context, objectToBeWrapped);
-    else if (metaInfo.isSubclassOf("Qt/QWidget", 4, 6))
-        instance = Internal::WidgetNodeInstance::create(metaInfo, context, objectToBeWrapped);
     else if (metaInfo.isSubclassOf("Qt/QGraphicsScene", 4, 6))
         instance = Internal::GraphicsSceneNodeInstance::create(metaInfo, context, objectToBeWrapped);
     else if (metaInfo.isSubclassOf("Qt/Component", 4, 6))
@@ -156,10 +160,9 @@ Internal::ObjectNodeInstance::Pointer NodeInstance::createInstance(const NodeMet
         instance = Internal::BehaviorNodeInstance::create(metaInfo, context, objectToBeWrapped);
     else if (metaInfo.isSubclassOf("Qt/QtObject", 4, 6))
         instance = Internal::ObjectNodeInstance::create(metaInfo, context, objectToBeWrapped);
+    else
+        instance = Internal::DummyNodeInstance::create();
 
-    if (instance.isNull()) {
-        instance = Internal::DummyNodeInstance::create(metaInfo, context);
-    }
 
     return instance;
 }

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

@@ -401,8 +401,6 @@ void NodeInstanceView::loadNodes(const QList<ModelNode> &nodeList)
 // TODO: Set base state as current model state
 void NodeInstanceView::loadModel(Model *model)
 {
-    Q_ASSERT(rootModelNode().isValid());
-
     removeAllInstanceNodeRelationships();
 
     engine()->rootContext()->setBaseUrl(model->fileUrl());
@@ -602,7 +600,6 @@ void NodeInstanceView::emitParentChanged(QObject *child)
 
 NodeInstance NodeInstanceView::loadNode(const ModelNode &node, QObject *objectToBeWrapped)
 {
-    Q_ASSERT(node.isValid());
     NodeInstance instance(NodeInstance::create(this, node, objectToBeWrapped));
 
     insertInstanceNodeRelationship(node, instance);

src/plugins/qmldesigner/core/instances/objectnodeinstance.h

@@ -95,7 +95,7 @@ public:
 
     NodeInstanceView *nodeInstanceView() const;
     void setNodeInstanceView(NodeInstanceView *view);
-    void initializePropertyWatcher(const Pointer &objectNodeInstance);
+    virtual void initializePropertyWatcher(const Pointer &objectNodeInstance);
     virtual void paint(QPainter *painter) const;
 
     virtual bool isTopLevel() const;

src/plugins/qmldesigner/core/model/modelnode.cpp

@@ -250,7 +250,7 @@ A node might become invalid if e.g. it or one of its ancestors is deleted.
 */
 bool ModelNode::isValid() const
 {
-    return !m_model.isNull() && !m_view.isNull() && m_internalNode &&m_internalNode->isValid();
+    return !m_model.isNull() && !m_view.isNull() && m_internalNode &&m_internalNode->isValid() /*&& model()->metaInfo().hasNodeMetaInfo(m_internalNode->type(), m_internalNode->majorVersion(), m_internalNode->minorVersion())*/;
 }
 
 /*!

src/plugins/qmldesigner/core/model/qmlitemnode.cpp

@@ -45,7 +45,7 @@ namespace QmlDesigner {
 
 bool QmlItemNode::isValid() const
 {
-    return QmlModelNodeFacade::isValid() && modelNode().metaInfo().isSubclassOf("Qt/Item", 4, 6);
+    return QmlModelNodeFacade::isValid() && modelNode().metaInfo().isValid() && modelNode().metaInfo().isSubclassOf("Qt/Item", 4, 6);
 }
 
 bool QmlItemNode::isRootNode() const

src/plugins/qmldesigner/core/model/qmlstate.cpp

@@ -228,6 +228,7 @@ void QmlModelState::setName(const QString &name)
 bool QmlModelState::isValid() const
 {
     return QmlModelNodeFacade::isValid() &&
+            modelNode().metaInfo().isValid() &&
             (modelNode().metaInfo().isSubclassOf("Qt/State", 4, 6) || isBaseState());
 }