IVE: Undo actions performed after entering/leaving nested view mess up the scene

src/libs/libiveditor/interfacedocument.cpp

@@ -655,7 +655,7 @@ void InterfaceDocument::onItemDoubleClicked(const shared::Id &id)
         if (entity->isFunction()) {
             if (auto fn = entity->as<ivm::IVFunction *>()) {
                 if (fn->hasNestedChildren()) {
-                    d->objectsModel->setRootObject(id);
+                    d->itemsModel->changeRootItem(id);
                     return;
                 }
             }

src/libs/libiveditor/itemeditor/ivfunctiongraphicsitem.cpp

@@ -58,6 +58,15 @@ IVFunctionGraphicsItem::IVFunctionGraphicsItem(ivm::IVFunction *entity, QGraphic
 
 IVFunctionGraphicsItem::~IVFunctionGraphicsItem() { }
 
+void IVFunctionGraphicsItem::init()
+{
+    IVFunctionTypeGraphicsItem::init();
+    if (auto dataObj = entity()) {
+        connect(dataObj, &ivm::IVFunction::childAdded, this, [this](){ update(); });
+        connect(dataObj, &ivm::IVFunction::childRemoved, this, [this](){ update(); });
+    }
+}
+
 ivm::IVFunction *IVFunctionGraphicsItem::entity() const
 {
     return qobject_cast<ivm::IVFunction *>(m_dataObject);

src/libs/libiveditor/itemeditor/ivfunctiongraphicsitem.h

@@ -45,6 +45,8 @@ public:
         Type = UserType + static_cast<int>(ivm::IVObject::Type::Function)
     };
 
+    void init() override;
+
     ivm::IVFunction *entity() const override;
 
     int type() const override { return Type; }