cell<T, V extends ValueCell<T>> method

V cell<T, V extends ValueCell<T>>(CreateCell<V> create)

Return an instance of a ValueCell that is kept between builds of the widget.

This function is intended to be used within build to create and retrieve an instance of a ValueCell, so that the same instance will be returned across calls to build.

During the first build of the widget every call to cell will result in a new ValueCell instance being created by calling the provided create function. In subsequent builds, cell returns the existing ValueCell instance that was created during the first build using create.

NOTE: This method may only be called within the build method.

Implementation

V cell<T, V extends ValueCell<T>>(CreateCell<V> create) {
  assert(_activeCellElement != null);
  return _activeCellElement!.getCell(create);
}