/// <summary>Gets a style definition by css selector from the StyleSheet.
/// If it's not found in the style sheet, the default stylesheet is checked.</summary>
/// <param name="selector">The css selector to search for.</param>
/// <returns>If found, a selector style definition; null otherwise.</returns>
public List <Css.Style> getStylesBySelector(string selectorText)
{
// Create the lexer:
Css.CssLexer lexer = new Css.CssLexer(selectorText, documentElement);
// Read a selector:
Css.Selector selector = lexer.ReadSelector();
return(getStylesBySelector(selector));
}
/// <summary>Attempts to get one or more styles from this sheet by selector.</summary>
/// <param name="selector">The selector to lookup.</param>
/// <returns>A style for the selector if its found; null otherwise.</returns>
public List <Css.Style> getStylesBySelector(Css.Selector selector)
{
// NOTE: The given selector is *not* an object we can match by reference (via ==).
// We must compare it for it's actual components.
string styleText = selector.LastRoot.StyleText;
List <Css.StyleRule> selectors;
if (styleText == "*")
{
selectors = AnySelectors;
}
else
{
// Stubs provide our first (and often sizeable) filtering.
if (!SelectorStubs.TryGetValue(styleText, out selectors))
{
return(null);
}
}
if (selectors.Count == 0)
{
return(null);
}
List <Css.Style> res = new List <Css.Style>();
// For each potential matcher..
foreach (Css.StyleRule compare in selectors)
{
if (compare.Selector.Equals(selector))
{
res.Add(compare.Style);
}
}
if (res.Count == 0)
{
return(null);
}
return(res);
}
