showScrollbar property

@protected bool showScrollbar

Overridable getter to indicate that the scrollbar should be visible, even when a scroll is not underway.

Subclasses can override this getter to make its value depend on an inherited theme.

Defaults to false when MaterialRawScrollbar.isAlwaysShown or MaterialRawScrollbar.thumbVisibility is null.

See also:

• MaterialRawScrollbar.isAlwaysShown, which overrides the default behavior.

Implementation

@protected
bool get showScrollbar =>
    widget.isAlwaysShown ?? widget.thumbVisibility ?? false;