/// <summary>Resolves a content property.</summary>
/// <param name="styles">the styles map</param>
/// <param name="contentContainer">the content container</param>
/// <param name="context">the CSS context</param>
private void ResolveContentProperty(IDictionary <String, String> styles, INode contentContainer, CssContext
context)
{
if (contentContainer is CssPseudoElementNode || contentContainer is PageMarginBoxContextNode)
{
IList <INode> resolvedContent = CssContentPropertyResolver.ResolveContent(styles, contentContainer, context
);
if (resolvedContent != null)
{
foreach (INode child in resolvedContent)
{
contentContainer.AddChild(child);
}
}
}
if (contentContainer is IElementNode)
{
context.GetCounterManager().AddTargetCounterIfRequired((IElementNode)contentContainer);
context.GetCounterManager().AddTargetCountersIfRequired((IElementNode)contentContainer);
}
}
/// <summary>Resolves content.</summary>
/// <param name="styles">the styles map</param>
/// <param name="contentContainer">the content container</param>
/// <param name="context">the CSS context</param>
/// <returns>
/// a list of
/// <see cref="iText.StyledXmlParser.Node.INode"/>
/// instances
/// </returns>
internal static IList <INode> ResolveContent(IDictionary <String, String> styles, INode contentContainer, CssContext
context)
{
String contentStr = styles.Get(CssConstants.CONTENT);
IList <INode> result = new List <INode>();
if (contentStr == null || CssConstants.NONE.Equals(contentStr) || CssConstants.NORMAL.Equals(contentStr))
{
return(null);
}
CssDeclarationValueTokenizer tokenizer = new CssDeclarationValueTokenizer(contentStr);
CssDeclarationValueTokenizer.Token token;
CssQuotes quotes = null;
while ((token = tokenizer.GetNextValidToken()) != null)
{
if (token.IsString())
{
result.Add(new CssContentPropertyResolver.ContentTextNode(contentContainer, token.GetValue()));
}
else
{
if (token.GetValue().StartsWith(CssConstants.COUNTERS + "("))
{
String paramsStr = token.GetValue().JSubstring(CssConstants.COUNTERS.Length + 1, token.GetValue().Length -
1);
String[] @params = iText.IO.Util.StringUtil.Split(paramsStr, ",");
if (@params.Length == 0)
{
return(ErrorFallback(contentStr));
}
// Counters are denoted by case-sensitive identifiers
String counterName = @params[0].Trim();
String counterSeparationStr = @params[1].Trim();
counterSeparationStr = counterSeparationStr.JSubstring(1, counterSeparationStr.Length - 1);
String listStyleType = @params.Length > 2 ? @params[2].Trim() : null;
CssCounterManager counterManager = context.GetCounterManager();
INode scope = contentContainer;
if (CssConstants.PAGE.Equals(counterName))
{
result.Add(new PageCountElementNode(false, contentContainer));
}
else
{
if (CssConstants.PAGES.Equals(counterName))
{
result.Add(new PageCountElementNode(true, contentContainer));
}
else
{
String resolvedCounter = counterManager.ResolveCounters(counterName, counterSeparationStr, listStyleType,
scope);
if (resolvedCounter == null)
{
logger.Error(MessageFormatUtil.Format(iText.Html2pdf.LogMessageConstant.UNABLE_TO_RESOLVE_COUNTER, counterName
));
}
else
{
result.Add(new CssContentPropertyResolver.ContentTextNode(scope, resolvedCounter));
}
}
}
}
else
{
if (token.GetValue().StartsWith(CssConstants.COUNTER + "("))
{
String paramsStr = token.GetValue().JSubstring(CssConstants.COUNTER.Length + 1, token.GetValue().Length -
1);
String[] @params = iText.IO.Util.StringUtil.Split(paramsStr, ",");
if (@params.Length == 0)
{
return(ErrorFallback(contentStr));
}
// Counters are denoted by case-sensitive identifiers
String counterName = @params[0].Trim();
String listStyleType = @params.Length > 1 ? @params[1].Trim() : null;
CssCounterManager counterManager = context.GetCounterManager();
INode scope = contentContainer;
if (CssConstants.PAGE.Equals(counterName))
{
result.Add(new PageCountElementNode(false, contentContainer));
}
else
{
if (CssConstants.PAGES.Equals(counterName))
{
result.Add(new PageCountElementNode(true, contentContainer));
}
else
{
String resolvedCounter = counterManager.ResolveCounter(counterName, listStyleType, scope);
if (resolvedCounter == null)
{
logger.Error(MessageFormatUtil.Format(iText.Html2pdf.LogMessageConstant.UNABLE_TO_RESOLVE_COUNTER, counterName
));
}
else
{
result.Add(new CssContentPropertyResolver.ContentTextNode(scope, resolvedCounter));
}
}
}
}
else
{
if (token.GetValue().StartsWith("url("))
{
IDictionary <String, String> attributes = new Dictionary <String, String>();
attributes.Put(AttributeConstants.SRC, CssUtils.ExtractUrl(token.GetValue()));
//TODO: probably should add user agent styles on CssContentElementNode creation, not here.
attributes.Put(AttributeConstants.STYLE, CssConstants.DISPLAY + ":" + CssConstants.INLINE_BLOCK);
result.Add(new CssContentElementNode(contentContainer, TagConstants.IMG, attributes));
}
else
{
if (CssGradientUtil.IsCssLinearGradientValue(token.GetValue()))
{
IDictionary <String, String> attributes = new Dictionary <String, String>();
attributes.Put(AttributeConstants.STYLE, CssConstants.BACKGROUND_IMAGE + ":" + token.GetValue() + ";" + CssConstants
.HEIGHT + ":" + CssConstants.INHERIT + ";" + CssConstants.WIDTH + ":" + CssConstants.INHERIT + ";");
result.Add(new CssContentElementNode(contentContainer, TagConstants.DIV, attributes));
}
else
{
if (token.GetValue().StartsWith("attr(") && contentContainer is CssPseudoElementNode)
{
int endBracket = token.GetValue().IndexOf(')');
if (endBracket > 5)
{
String attrName = token.GetValue().JSubstring(5, endBracket);
if (attrName.Contains("(") || attrName.Contains(" ") || attrName.Contains("'") || attrName.Contains("\""))
{
return(ErrorFallback(contentStr));
}
IElementNode element = (IElementNode)contentContainer.ParentNode();
String value = element.GetAttribute(attrName);
result.Add(new CssContentPropertyResolver.ContentTextNode(contentContainer, value == null ? "" : value));
}
}
else
{
if (token.GetValue().EndsWith("quote") && contentContainer is IStylesContainer)
{
if (quotes == null)
{
quotes = CssQuotes.CreateQuotes(styles.Get(CssConstants.QUOTES), true);
}
String value = quotes.ResolveQuote(token.GetValue(), context);
if (value == null)
{
return(ErrorFallback(contentStr));
}
result.Add(new CssContentPropertyResolver.ContentTextNode(contentContainer, value));
}
else
{
if (token.GetValue().StartsWith(CssConstants.ELEMENT + "(") && contentContainer is PageMarginBoxContextNode
)
{
String paramsStr = token.GetValue().JSubstring(CssConstants.ELEMENT.Length + 1, token.GetValue().Length -
1);
String[] @params = iText.IO.Util.StringUtil.Split(paramsStr, ",");
if (@params.Length == 0)
{
return(ErrorFallback(contentStr));
}
String name = @params[0].Trim();
String runningElementOccurrence = null;
if (@params.Length > 1)
{
runningElementOccurrence = @params[1].Trim();
}
result.Add(new PageMarginRunningElementNode(name, runningElementOccurrence));
}
else
{
return(ErrorFallback(contentStr));
}
}
}
}
}
}
}
}
}
return(result);
}