<?xml version="1.0" encoding="UTF-8"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:include schemaLocation="urn:magento:module:Magento_Widget:etc/types.xsd"/>

    <xs:annotation>
        <xs:documentation>Contains widgets.</xs:documentation>
    </xs:annotation>

    <xs:element name="widgets">
        <xs:annotation>
            <xs:documentation>A list of widgets.</xs:documentation>
        </xs:annotation>
        <xs:complexType>
            <xs:sequence maxOccurs="unbounded" minOccurs="0">
                <xs:element name="widget" type="widgetType" />
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <xs:complexType name="widgetType">
        <xs:annotation>
            <xs:documentation>Definition of a widget.</xs:documentation>
        </xs:annotation>
        <xs:all>
            <xs:element name="label" type="translatableType" maxOccurs="1" minOccurs="0" />
            <xs:element name="description" type="translatableType" maxOccurs="1" minOccurs="0" />
            <xs:element name="parameters" type="parametersType" minOccurs="0"/>
            <xs:element name="containers" type="containersType" minOccurs="0"/>
        </xs:all>
        <xs:attribute name="id" type="xs:ID" use="required" />
        <xs:attribute name="class" type="xs:string" />
        <xs:attribute name="is_email_compatible" type="xs:boolean" />
        <xs:attribute name="placeholder_image" type="xs:string" />
        <xs:attribute name="ttl" type="xs:int" />
    </xs:complexType>

    <xs:complexType name="parametersType">
        <xs:sequence>
            <xs:element name="parameter" type="parameterType" maxOccurs="unbounded" minOccurs="1" />
        </xs:sequence>
    </xs:complexType>

    <xs:complexType name="containersType">
        <xs:sequence>
            <xs:element name="container" type="containerType" maxOccurs="unbounded" minOccurs="1" />
        </xs:sequence>
    </xs:complexType>

    <xs:complexType name="translatableType">
        <xs:simpleContent>
            <xs:extension base="xs:string">
                <xs:attribute name="translate" use="optional" fixed="true" type="xs:boolean"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>

    <xs:complexType name="parameterType" abstract="true">
        <xs:annotation>
            <xs:documentation>
                Abstract type which is parent of all parameters. Contains attributes
                and elements common across all parameter types.
            </xs:documentation>
        </xs:annotation>
        <xs:sequence>
            <xs:element name="label" type="translatableType" minOccurs="0" maxOccurs="1" />
            <xs:element name="description" type="translatableType" minOccurs="0" maxOccurs="1" />
            <xs:element name="depends" type="dependsType" minOccurs="0" maxOccurs="1" />
        </xs:sequence>
        <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
        <xs:attribute name="visible" type="xs:boolean" />
        <xs:attribute name="sort_order" type="xs:int" />
        <xs:attribute name="required" type="xs:string" />
    </xs:complexType>

    <xs:complexType name="dependsParameterType">
        <xs:annotation>
            <xs:documentation>
                The parameter name and the value it must be to satisfy this dependency.
            </xs:documentation>
        </xs:annotation>
        <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
        <xs:attribute name="value" type="xs:string" use="required" />
    </xs:complexType>

    <xs:complexType name="block">
        <xs:annotation>
            <xs:documentation>Parameter type which supplies a renderer.</xs:documentation>
        </xs:annotation>
        <xs:complexContent>
            <xs:extension base="parameterType">
                <xs:sequence>
                    <xs:element name="block" type="blockType" />
                </xs:sequence>
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="conditions">
        <xs:annotation>
            <xs:documentation>Parameter type which provide conditions functionality.</xs:documentation>
        </xs:annotation>
        <xs:complexContent>
            <xs:extension base="parameterType">
                <xs:attribute name="class" type="xs:string" use="required" />
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="dataType">
        <xs:annotation>
            <xs:documentation>Data for the renderer.</xs:documentation>
        </xs:annotation>
        <xs:sequence>
            <xs:element name="item" type="namedType" minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
    </xs:complexType>

    <xs:complexType name="blockType">
        <xs:annotation>
            <xs:documentation>Class and data needed to render the parameter.</xs:documentation>
        </xs:annotation>
        <xs:all>
            <xs:element name="data" minOccurs="0" type="dataType" />
        </xs:all>
        <xs:attribute name="class" type="xs:string" />
    </xs:complexType>

    <xs:complexType name="text">
        <xs:annotation>
            <xs:documentation>Parameter type which is text</xs:documentation>
        </xs:annotation>
        <xs:complexContent>
            <xs:extension base="parameterType">
                <xs:sequence>
                    <xs:element name="value" type="translatableType" minOccurs="0" maxOccurs="1" />
                </xs:sequence>
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="select">
        <xs:annotation>
            <xs:documentation>Parameter type which has a list of options.</xs:documentation>
        </xs:annotation>
        <xs:complexContent>
            <xs:extension base="parameterType">
                <xs:sequence>
                    <xs:element name="options" type="optionsType" minOccurs="0"/>
                </xs:sequence>
                <xs:attribute name="source_model" type="xs:string" />
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="multiselect">
        <xs:annotation>
            <xs:documentation>Display a parameter with a multi-select box.</xs:documentation>
        </xs:annotation>
        <xs:complexContent>
            <xs:extension base="parameterType">
                <xs:sequence>
                    <xs:element name="options" type="optionsType" minOccurs="0"/>
                </xs:sequence>
                <xs:attribute name="source_model" type="xs:string" />
            </xs:extension>
        </xs:complexContent>
    </xs:complexType>

    <xs:complexType name="optionsType">
        <xs:sequence>
            <xs:element name="option" type="optionType" maxOccurs="unbounded" minOccurs="1" />
        </xs:sequence>
    </xs:complexType>

    <xs:complexType name="optionType">
        <xs:annotation>
            <xs:documentation>An option of a select parameter.</xs:documentation>
        </xs:annotation>
        <xs:all>
            <xs:element name="label" type="translatableType" />
        </xs:all>
        <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
        <xs:attribute name="value" type="xs:string" />
        <xs:attribute name="selected" type="xs:boolean" />
    </xs:complexType>

    <xs:complexType name="containerType">
        <xs:annotation>
            <xs:documentation>Specifies the widget's sections and templates.</xs:documentation>
        </xs:annotation>
        <xs:sequence>
            <xs:element name="template" type="templateType" minOccurs="0" maxOccurs="unbounded" />
        </xs:sequence>
        <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
    </xs:complexType>

    <xs:complexType name="templateType">
        <xs:annotation>
            <xs:documentation>Name and value of template</xs:documentation>
        </xs:annotation>
        <xs:attribute name="name" type="xs:NMTOKEN" use="required" />
        <xs:attribute name="value" type="xs:string" use="required"/>
    </xs:complexType>

    <xs:complexType name="dependsType">
        <xs:annotation>
            <xs:documentation>List of parameters this parameter depends on.</xs:documentation>
        </xs:annotation>
        <xs:sequence maxOccurs="unbounded">
            <xs:element name="parameter" type="dependsParameterType" />
        </xs:sequence>
    </xs:complexType>
</xs:schema>