// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Collections;
using System.Xml.Serialization;
 
namespace System.Xml.Schema
{
    public class XmlSchemaComplexContentExtension : XmlSchemaContent
    {
        private XmlSchemaParticle? _particle;
        private XmlSchemaObjectCollection _attributes = new XmlSchemaObjectCollection();
        private XmlSchemaAnyAttribute? _anyAttribute;
        private XmlQualifiedName _baseTypeName = XmlQualifiedName.Empty;
 
        [XmlAttribute("base")]
        public XmlQualifiedName BaseTypeName
        {
            get { return _baseTypeName; }
            set { _baseTypeName = value ?? XmlQualifiedName.Empty; }
        }
 
        [XmlElement("group", typeof(XmlSchemaGroupRef)),
         XmlElement("choice", typeof(XmlSchemaChoice)),
         XmlElement("all", typeof(XmlSchemaAll)),
         XmlElement("sequence", typeof(XmlSchemaSequence))]
        public XmlSchemaParticle? Particle
        {
            get { return _particle; }
            set { _particle = value; }
        }
 
        [XmlElement("attribute", typeof(XmlSchemaAttribute)),
         XmlElement("attributeGroup", typeof(XmlSchemaAttributeGroupRef))]
        public XmlSchemaObjectCollection Attributes
        {
            get { return _attributes; }
        }
 
        [XmlElement("anyAttribute")]
        public XmlSchemaAnyAttribute? AnyAttribute
        {
            get { return _anyAttribute; }
            set { _anyAttribute = value; }
        }
 
        internal void SetAttributes(XmlSchemaObjectCollection newAttributes)
        {
            _attributes = newAttributes;
        }
    }
}