internal static bool UpdateFlowDirection(this UIView view, IVisualElementController controller)
{
if (controller == null || view == null || !Forms.IsiOS9OrNewer)
{
return(false);
}
if (controller is IView v)
{
var current = view.SemanticContentAttribute;
view.UpdateFlowDirection(v);
return(current != view.SemanticContentAttribute);
}
UISemanticContentAttribute updateValue = view.SemanticContentAttribute;
if (controller.EffectiveFlowDirection.IsRightToLeft())
{
updateValue = UISemanticContentAttribute.ForceRightToLeft;
}
else if (controller.EffectiveFlowDirection.IsLeftToRight())
{
updateValue = UISemanticContentAttribute.ForceLeftToRight;
}
if (updateValue != view.SemanticContentAttribute)
{
view.SemanticContentAttribute = updateValue;
return(true);
}
return(false);
}
internal static bool UpdateFlowDirection(this UIView view, IVisualElementController controller)
{
if (controller == null || view == null || !Forms.IsiOS9OrNewer)
return false;
UISemanticContentAttribute updateValue = view.SemanticContentAttribute;
if (controller.EffectiveFlowDirection.IsRightToLeft())
updateValue = UISemanticContentAttribute.ForceRightToLeft;
else if (controller.EffectiveFlowDirection.IsLeftToRight())
updateValue = UISemanticContentAttribute.ForceLeftToRight;
if (updateValue != view.SemanticContentAttribute)
{
view.SemanticContentAttribute = updateValue;
return true;
}
return false;
}
public static void UpdateFlowDirection(this UIView nativeView, IView view)
{
UISemanticContentAttribute updateValue = nativeView.SemanticContentAttribute;
if (view.FlowDirection == view.Handler?.MauiContext?.GetFlowDirection() ||
view.FlowDirection == FlowDirection.MatchParent)
{
updateValue = UISemanticContentAttribute.Unspecified;
}
else if (view.FlowDirection == FlowDirection.RightToLeft)
{
updateValue = UISemanticContentAttribute.ForceRightToLeft;
}
else if (view.FlowDirection == FlowDirection.LeftToRight)
{
updateValue = UISemanticContentAttribute.ForceLeftToRight;
}
if (updateValue != nativeView.SemanticContentAttribute)
{
nativeView.SemanticContentAttribute = updateValue;
}
}
public static void UpdateFlowDirection(this UIView platformView, IView view)
{
UISemanticContentAttribute updateValue = platformView.SemanticContentAttribute;
switch (view.FlowDirection)
{
case FlowDirection.MatchParent:
updateValue = UISemanticContentAttribute.Unspecified;
break;
case FlowDirection.LeftToRight:
updateValue = UISemanticContentAttribute.ForceLeftToRight;
break;
case FlowDirection.RightToLeft:
updateValue = UISemanticContentAttribute.ForceRightToLeft;
break;
}
if (updateValue != platformView.SemanticContentAttribute)
{
platformView.SemanticContentAttribute = updateValue;
}
}
internal extern static IntPtr IntPtr_objc_msgSend(IntPtr receiver, IntPtr selector, UISemanticContentAttribute arg1);
