internal static void StyleChanged(IInvalidating client, string styleProp)
{
StyleManager styleManager = StyleManager.Instance;
/**
* 1. Check to see if this is one of the style properties
* that is known to affect layout.
* */
if (null == styleProp || // null refreshes the object
styleProp == "styleName" || // mapper changed
styleManager.IsSizeInvalidatingStyle(styleProp)) // component size depends on this style
{
// This style property change may affect the layout of this
// object. Signal the LayoutManager to re-measure the object.
client.InvalidateSize();
}
/**
* 2. This is very important:
* It invalidates the component display list upon each style change
* UpdateDisplayList will be run in the next frame
* This means that we can read all the available styles and manipulate children (for instance in skins, see the PanelSkin)
* */
client.InvalidateDisplayList();
/**
* 3. Check if we should invalidate parent
* */
IInvalidating parent = null;
if (client is IVisualElement)
{
parent = ((IVisualElement)client).Parent as IInvalidating;
}
if (null != parent)
{
if (styleProp == "styleName" || styleManager.IsParentSizeInvalidatingStyle(styleProp))
{
parent.InvalidateSize();
}
if (styleProp == "styleName" || styleManager.IsParentDisplayListInvalidatingStyle(styleProp))
{
parent.InvalidateDisplayList();
}
}
}
