public FocusAttachment attach(BuildContext context, FocusOnKeyCallback onKey = null)
{
_context = context;
_onKey = onKey ?? _onKey;
_attachment = new FocusAttachment(this);
return(_attachment);
}
public void _initNode()
{
if (widget.focusNode == null)
{
_internalNode = _internalNode ?? _createNode();
}
if (widget.skipTraversal != null)
{
focusNode.skipTraversal = widget.skipTraversal.Value;
}
if (widget.canRequestFocus != null)
{
focusNode.canRequestFocus = widget.canRequestFocus.Value;
}
_canRequestFocus = focusNode.canRequestFocus;
_hasPrimaryFocus = focusNode.hasPrimaryFocus;
_focusAttachment = focusNode.attach(context, onKey: widget.onKey);
focusNode.addListener(_handleFocusChanged);
}