Method isConstant

src/document/UBDocumentController.h:229–229

    bool isDocument(const QModelIndex &index) const {return nodeFromIndex(index)->nodeType() == UBDocumentTreeNode::Document;}
    bool isToplevel(const QModelIndex &index) const {return nodeFromIndex(index) ? nodeFromIndex(index)->isTopLevel() : false;}
    bool isConstant(const QModelIndex &index) const {return isToplevel(index) || (index == mUntitledDocuments);}
    bool isOkToRename(const QModelIndex &index) const {return flags(index) & Qt::ItemIsEditable;}
    std::shared_ptr<UBDocumentProxy> proxyData(const QModelIndex &index) const {return nodeFromIndex(index)->proxyData();}
    void addDocument(std::shared_ptr<UBDocumentProxy> pProxyData, const QModelIndex &pParent = QModelIndex());