QmlDesigner: Move QmlVisualNode::states to QmlObjectNode

This is required for StateGroup support.

Change-Id: I25d8f94c2a0fa9140ce8af3032bc92a7b858b9d8
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Henning Gründl <henning.gruendl@qt.io>

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

@@ -131,6 +131,8 @@ public:
     QList<QmlModelState> allDefinedStates() const;
     QList<QmlModelStateOperation> allInvalidStateOperations() const;
 
+    QmlModelStateGroup states() const;
+
 protected:
     NodeInstance nodeInstance() const;
     QmlObjectNode nodeForInstance(const NodeInstance &instance) const;

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

@@ -71,7 +71,6 @@ public:
     static bool isValidQmlVisualNode(const ModelNode &modelNode);
     bool isRootNode() const;
 
-    QmlModelStateGroup states() const;
     QList<QmlVisualNode> children() const;
     QList<QmlObjectNode> resources() const;
     QList<QmlObjectNode> allDirectSubNodes() const;
@@ -121,7 +120,7 @@ private:
 
 class QMLDESIGNERCORE_EXPORT QmlModelStateGroup
 {
-    friend class QmlVisualNode;
+    friend class QmlObjectNode;
     friend class StatesEditorView;
 
 public:

src/plugins/qmldesigner/designercore/model/qmlobjectnode.cpp

@@ -582,6 +582,13 @@ QList<QmlModelStateOperation> QmlObjectNode::allInvalidStateOperations() const
     return result;
 }
 
+QmlModelStateGroup QmlObjectNode::states() const
+{
+    if (isValid())
+        return QmlModelStateGroup(modelNode());
+    else
+        return QmlModelStateGroup();
+}
 
 /*!
     Removes a variant property of the object specified by \a name from the

src/plugins/qmldesigner/designercore/model/qmlvisualnode.cpp

@@ -191,14 +191,6 @@ void QmlVisualNode::initializePosition(const QmlVisualNode::Position &position)
     }
 }
 
-QmlModelStateGroup QmlVisualNode::states() const
-{
-    if (isValid())
-        return QmlModelStateGroup(modelNode());
-    else
-        return QmlModelStateGroup();
-}
-
 QmlObjectNode QmlVisualNode::createQmlObjectNode(AbstractView *view,
                                                  const ItemLibraryEntry &itemLibraryEntry,
                                                  const Position &position,