<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
        xmlns:xs="http://www.w3.org/2001/XMLSchema"
        elementFormDefault="qualified">

    <xs:element name="Folder">
        <xs:complexType>
            <xs:all>
                <xs:element name="Title" type="Title"/>
                <xs:element name="Description" type="xs:string"/>
                <xs:element ref="Sort"/>
            </xs:all>
            <xs:attribute name="Id" type="xs:nonNegativeInteger"/>
        </xs:complexType>
    </xs:element>

    <xs:simpleType name="Title">
        <xs:restriction base="xs:string">
            <xs:maxLength value="255"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:element name="Sort">
        <xs:complexType>
            <xs:attribute name="type" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:token">
                        <xs:enumeration value="Manual"/>
                        <xs:enumeration value="Title"/>
                        <xs:enumeration value="Inherit"/>
                        <xs:enumeration value="Creation"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="direction">
                <xs:simpleType>
                    <xs:restriction base="xs:token">
                        <xs:enumeration value="ASC"/>
                        <xs:enumeration value="DESC"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="position">
                <xs:simpleType>
                    <xs:restriction base="xs:token">
                        <xs:enumeration value="Top"/>
                        <xs:enumeration value="Bottom"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="order">
                <xs:simpleType>
                    <xs:restriction base="xs:token">
                        <xs:enumeration value="Title"/>
                        <xs:enumeration value="Creation"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
</xs:schema>
