// -----------------------------------------------------------------
// Retrieve text properties from specified inline object.
//
// WORKAROUND: see PS task #13486 & #3399.
// For inline object go to its parent and retrieve text decoration
// properties from there.
// ------------------------------------------------------------------
internal static TextDecorationCollection GetTextDecorationsForInlineObject(DependencyObject element, TextDecorationCollection textDecorations)
{
Debug.Assert(element != null);
DependencyObject parent = LogicalTreeHelper.GetParent(element);
TextDecorationCollection parentTextDecorations = null;
if (parent != null)
{
// Get parent text decorations if it is non-null
parentTextDecorations = GetTextDecorations(parent);
}
// see if the two text decorations are equal.
bool textDecorationsEqual = (textDecorations == null) ?
parentTextDecorations == null
: textDecorations.ValueEquals(parentTextDecorations);
if (!textDecorationsEqual)
{
if (parentTextDecorations == null)
{
textDecorations = null;
}
else
{
textDecorations = new TextDecorationCollection();
int count = parentTextDecorations.Count;
for (int i = 0; i < count; ++i)
{
textDecorations.Add(parentTextDecorations[i]);
}
}
}
return textDecorations;
}
