// ====================================================================
//
// PRIVATE/PROTECTED METHODS
//
// ====================================================================
private void CheckTag()
{
if (TagName.EndsWith("/"))
{
TagName = TagName.Substring(0, TagName.Length - 1);
}
TagNameNS = TagName;
ElementInfo = HtmlElementInfo.GetElementInfo(TagNameNS);
int pos = TagName.IndexOf(':');
if (pos != -1)
{
Namespace = TagName.Substring(0, pos);
TagName = TagName.Substring(pos + 1);
}
if (ElementInfo == null)
{
if (Namespace == null)
{
AddWarning("Unknown tag: " + TagName);
}
}
else
{
if (Parent != null)
{
if (!ElementInfo.IsValidParent(Parent.TagName))
{
AddWarning("Invalid parent for " + TagName + " (parent: " + Parent.TagName + ")");
}
}
}
}
public static string BuildOpenTag(string tagName, List <Tuple <string, string> > attributes, bool noEvents, bool noUnknownAttributes)
{
HtmlElementInfo ei = null;
if (noUnknownAttributes)
{
ei = HtmlElementInfo.GetElementInfo(tagName);
}
return(InternalBuildOpenTag(ei, tagName, attributes, noEvents, noUnknownAttributes, false));
}
// ====================================================================
//
// STATIC METHODS (private/protected)
//
// ====================================================================
private static string InternalBuildOpenTag(HtmlElementInfo ei, string tagName, List <Tuple <string, string> > attributes,
bool noEvents, bool noUnknownAttributes, bool xmlEmptyTag)
{
if (!noUnknownAttributes)
{
ei = null;
}
StringBuilder sb = new StringBuilder(16 + attributes.Count * 32);
sb.Append("<");
sb.Append(tagName);
foreach (Tuple <string, string> p in attributes)
{
string name = p.Item1;
if (string.IsNullOrWhiteSpace(name) || noEvents && name.StartsWith("on"))
{
continue;
}
if (ei != null && ei.GetAttributeStatus(name) == AttrStatus.Unknown)
{
continue;
}
if (p.Item2 == null)
{
continue; // Empty attribute (valid on HTML5 and above)
}
sb.AppendFormat(" {0}=", p.Item1);
string encodedValue = p.Item2 == null? "" : WebUtility.HtmlEncode(p.Item2);
sb.AppendFormat("\"{0}\"", encodedValue);
}
if (xmlEmptyTag)
{
sb.Append(" />");
}
else
{
sb.Append(">");
}
return(sb.ToString());
}
public static string BuildOpenTag(HtmlElementInfo ei, List <Tuple <string, string> > attributes, bool noEvents, bool noUnknownAttributes)
{
return(InternalBuildOpenTag(ei, ei.TagName, attributes, noEvents, noUnknownAttributes, false));
}