internal static void PropagateFlowDirection(Element target, Element source)
{
IFlowDirectionController controller = target as IFlowDirectionController;
if (controller == null)
{
return;
}
var sourceController = source as IFlowDirectionController;
if (sourceController == null)
{
return;
}
if (controller.EffectiveFlowDirection.IsImplicit())
{
var flowDirection = sourceController.EffectiveFlowDirection.ToFlowDirection();
if (flowDirection != controller.EffectiveFlowDirection.ToFlowDirection())
{
controller.EffectiveFlowDirection = flowDirection.ToEffectiveFlowDirection();
}
}
controller.EffectiveFlowDirection = controller.EffectiveFlowDirection;
}
internal static void SetFlowDirectionFromParent(Element child)
{
IFlowDirectionController controller = child as IFlowDirectionController;
if (controller == null)
{
return;
}
if (controller.EffectiveFlowDirection.IsImplicit())
{
var parentView = child.Parent as IFlowDirectionController;
if (parentView == null)
{
return;
}
var flowDirection = parentView.EffectiveFlowDirection.ToFlowDirection();
if (flowDirection != controller.EffectiveFlowDirection.ToFlowDirection())
{
controller.EffectiveFlowDirection = flowDirection.ToEffectiveFlowDirection();
}
}
}
