private void InvokeAsyncCallback(LayoutCallback callback)
{
if (this.layoutHandler != null)
{
this.layoutHandler.InvokeLayoutCallback(callback);
}
}
private void InvokeAsyncCallback(LayoutCallback callback)
{
if (this.layoutHandler == null)
{
return;
}
this.layoutHandler.InvokeLayoutCallback(callback);
}
public override void updateCallback(LayoutCallback <SliverConstraints> value)
{
if (value == _callback)
{
return;
}
_callback = value;
markNeedsLayout();
}
public _RenderLayoutBuilder(
LayoutCallback <BoxConstraints> callback = null)
{
this._callback = callback;
}
