// Helper to clear formatting properties from passed inline element, preserving only non-formatting ones
private static void ClearFormattingInlineProperties(Inline inline)
{
// Clear all properties from this inline element
LocalValueEnumerator properties = inline.GetLocalValueEnumerator();
while (properties.MoveNext())
{
DependencyProperty property = properties.Current.Property;
// Skip readonly and non-formatting properties
if (property.ReadOnly || TextSchema.IsNonFormattingCharacterProperty(property))
{
continue;
}
inline.ClearValue(properties.Current.Property);
}
}
// Returns true if an Inline has one or more non-readonly local property values.
private static bool HasWriteableLocalPropertyValues(Inline inline)
{
LocalValueEnumerator enumerator = inline.GetLocalValueEnumerator();
bool hasLocalValues = false;
while (!hasLocalValues && enumerator.MoveNext())
{
hasLocalValues = !enumerator.Current.Property.ReadOnly;
}
return hasLocalValues;
}