private static void ApplyStructuralInlinePropertyAcrossRun(TextPointer start, TextPointer end, Run run, DependencyProperty formattingProperty, object value)
{
if (start.CompareTo(end) == 0)
{
// When the range is empty we should ignore the command, except
// for the case of empty Run which can be encountered in empty paragraphs
if (run.IsEmpty)
{
run.SetValue(formattingProperty, value);
}
}
else
{
// Split elements at start and end boundaries.
start = SplitFormattingElements(start, /*keepEmptyFormatting:*/false, /*limitingAncestor*/run.Parent as TextElement);
end = SplitFormattingElements(end, /*keepEmptyFormatting:*/false, /*limitingAncestor*/run.Parent as TextElement);
run = (Run)start.GetAdjacentElement(LogicalDirection.Forward);
run.SetValue(formattingProperty, value);
}
// Clear property value from all ancestors of this Run.
FixupStructuralPropertyEnvironment(run, formattingProperty);
}
