/// <summary>Appends a qualifier to the qualifier list and sets respective options.</summary>
/// <param name="qualNode">a qualifier node.</param>
/// <exception cref="iText.Kernel.XMP.XMPException"></exception>
public virtual void AddQualifier(iText.Kernel.XMP.Impl.XMPNode qualNode)
{
AssertQualifierNotExisting(qualNode.GetName());
qualNode.SetParent(this);
qualNode.GetOptions().SetQualifier(true);
GetOptions().SetHasQualifiers(true);
// contraints
if (qualNode.IsLanguageNode())
{
// "xml:lang" is always first and the option "hasLanguage" is set
options.SetHasLanguage(true);
GetQualifier().Insert(0, qualNode);
}
else
{
if (qualNode.IsTypeNode())
{
// "rdf:type" must be first or second after "xml:lang" and the option "hasType" is set
options.SetHasType(true);
GetQualifier().Insert(!options.GetHasLanguage() ? 0 : 1, qualNode);
}
else
{
// other qualifiers are appended
GetQualifier().Add(qualNode);
}
}
}
/// <summary>Removes one qualifier node and fixes the options.</summary>
/// <param name="qualNode">qualifier to remove</param>
public virtual void RemoveQualifier(iText.Kernel.XMP.Impl.XMPNode qualNode)
{
PropertyOptions opts = GetOptions();
if (qualNode.IsLanguageNode())
{
// if "xml:lang" is removed, remove hasLanguage-flag too
opts.SetHasLanguage(false);
}
else
{
if (qualNode.IsTypeNode())
{
// if "rdf:type" is removed, remove hasType-flag too
opts.SetHasType(false);
}
}
GetQualifier().Remove(qualNode);
if (qualifier.Count == 0)
{
opts.SetHasQualifiers(false);
qualifier = null;
}
}