/// <summary>
/// Parses a rule set into a list of
/// <see cref="iText.StyledXmlParser.Css.CssRuleSet"/>
/// instances.
/// </summary>
/// <remarks>
/// Parses a rule set into a list of
/// <see cref="iText.StyledXmlParser.Css.CssRuleSet"/>
/// instances.
/// This method returns a
/// <see cref="System.Collections.IList{E}"/>
/// because a selector can
/// be compound, like "p, div, #navbar".
/// </remarks>
/// <param name="selectorStr">the selector</param>
/// <param name="propertiesStr">the properties</param>
/// <returns>
/// the resulting list of
/// <see cref="iText.StyledXmlParser.Css.CssRuleSet"/>
/// instances
/// </returns>
public static IList <CssRuleSet> ParseRuleSet(String selectorStr, String propertiesStr)
{
IList <CssDeclaration> declarations = ParsePropertyDeclarations(propertiesStr);
IList <CssRuleSet> ruleSets = new List <CssRuleSet>();
//check for rules like p, {…}
String[] selectors = iText.IO.Util.StringUtil.Split(selectorStr, ",");
for (int i = 0; i < selectors.Length; i++)
{
selectors[i] = CssUtils.RemoveDoubleSpacesAndTrim(selectors[i]);
if (selectors[i].Length == 0)
{
return(ruleSets);
}
}
foreach (String currentSelectorStr in selectors)
{
try {
ruleSets.Add(new CssRuleSet(new CssSelector(currentSelectorStr), declarations));
}
catch (Exception exc) {
logger.Error(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.ERROR_PARSING_CSS_SELECTOR,
currentSelectorStr), exc);
//if any separated selector has errors, all others become invalid.
//in this case we just clear map, it is the easies way to support this.
declarations.Clear();
return(ruleSets);
}
}
return(ruleSets);
}
/// <summary>
/// Creates a new
/// <see cref="CssPageRule"/>
/// instance.
/// </summary>
/// <param name="ruleParameters">the rule parameters</param>
public CssPageRule(String ruleParameters)
: base(CssRuleName.PAGE, ruleParameters)
{
pageSelectors = new List <ICssSelector>();
String[] selectors = iText.IO.Util.StringUtil.Split(ruleParameters, ",");
for (int i = 0; i < selectors.Length; i++)
{
selectors[i] = CssUtils.RemoveDoubleSpacesAndTrim(selectors[i]);
}
foreach (String currentSelectorStr in selectors)
{
pageSelectors.Add(new CssPageSelector(currentSelectorStr));
}
}
