registerFocusController method

void registerFocusController(
  1. FocusController focusController
)

Registers a focus controller.

The focusController represents the focus controller of this control.

Implementation

void registerFocusController(FocusController focusController) {
  if (_focusController == focusController) {
    return;
  }

  if (_focusController != null) {
    unregisterFocusController(_focusController!);
  }

  _focusController = focusController;
  _focusController!.addListener(_onFocusControllerChanged);
}