tristate property

bool get tristate

Whether the checkbox supports a tri-state (null) value.

Implementation

bool get tristate => _tristate;

set tristate (bool v)

Sets the tristate flag and invalidates the paint cache.

Implementation

set tristate(bool v) {
  if (_tristate == v) return;
  _tristate = v;
  _invalidateCache();
  markNeedsPaint();
}