// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only

/*!
    \page qml-contacts.html
    \title Qt Contacts QML API
    \brief A QML plugin for the Qt Contacts API

    \section1 Overview

    To be able to use this component the QML \e {import} statement needs to
    reference the module before it can used. Simply add the following to the QML
    file:

     \snippet moduleimports.qml Contacts import

    The Contacts API enables client to search for contacts data from local
    backends and use filters to get only the relevant results. The QML Contacts
    API delivers this capability in easy to use form.

    The following describes the API. The \l{Examples} section contains sample
    code for the QML API.

    \section2 Contact Model

    The Contact itself is represented by a model called a \l {ContactModel}.
    This model supplies a rich selection of properties to display or to use as
    filter criteria. The model is then used to perform requests on a contacts
    store.

    \section2 Filters

    Developers can construct a series of filters and combine them using the
    \l{IntersectionFilter} and \l{UnionFilter} types to represent a logical \e
    and and \e or of the results. There are also other properties that give
    control over the filter logic, such as \l {DetailRangeFilter::rangeFlags}
    {RangeFlags} and the \l {DetailFilter::matchFlags}{MatchFlags}.

    As an example, consider the follow QML code which has a \l ContactModel type
    containing a filter and a list of sort orders. The contacts will be
    restricted to those living in Finland who are either male or born between
    1970 and 1984.

    The list of contacts in this ContactModel will be first sorted on the
    contacts' organization name and then on the contacts' first name.

    \code
        import QtContacts 5.0

        ...

        model: ContactModel {

            filter: IntersectionFilter {
                DetailFilter {
                    detail:ContactDetail.Address
                    field: Address.Country
                    value: "Finland"
                }
                UnionFilter {
                    DetailRangeFilter {
                        detail:ContactDetail.Birthday
                        field:Birthday.Birthday
                        min: '1970-01-01'
                        max: '1984-12-31'
                    }
                    DetailFilter {
                        detail:ContactDetail.Gender
                        field:Gender.Gender
                        value:Gender.Male
                    }
                }
            }
            sortOrders: [
               SortOrder {
                  detail:ContactDetail.Organization
                  field:Organization.Name
                  direction:Qt.AscendingOrder
               },
               SortOrder {
                  detail:ContactDetail.Name
                  field:Name.FirstName
                  direction:Qt.AscendingOrder
               }
            ]
        }
    \endcode

    \section2 Contact type

    The \l {Contact} type represents a single contact instance from the contacts store.
    All contact details are organized as group properties.

    The following snippet shows how you can construct a Contact object in QML:
    \code

    Rectangle {
        id: topItem
        width: 360
        height: 640
        x: 0
        y: 0

        Contact {
            id: myContact
            Name {
                firstName:"John"
                lastName:"Gates"
            }

            EmailAddress {
                emailAddress:"john@example.com"
            }
            EmailAddress {
                emailAddress:"mygmailaccount@gmail.com"
            }

            address.street:"53 Mysteet St"
            address.locality: "My City"
            address.region: "My Region"
            address.postcode:"1111"
            address.country:"My Country"
            address.subTypes:[Address.Postal, Address.Domestic]
            address.postOfficeBox:"1111"

            Nickname {
                nickname:"John"
            }

            PhoneNumber {
                number: "1111111111"
                subTypes:[PhoneNumber.Mobile]
            }

            PhoneNumber {
                number: "2222222222"
                subTypes:[PhoneNumber.Fax]
            }

            PhoneNumber {
                number: "3333333333"
                subTypes:[PhoneNumber.Landline]
            }
        }

        Column {
            spacing:4

            //access the same property with different syntaxes
            Text { text:"Name(from property name):" + myContact.name.firstName + " " + myContact.name.lastName }
            Text { text:"Name(from detail type):" + myContact.detail(ContactDetail.Name).firstName + " " + myContact.name.lastName }

            Text { text:"Address:" + myContact.address.street + " " + myContact.address.locality + " " + myContact.address.region + " " + myContact.address.postcode }

            //If a contact contains multiple details for the same detail type, you can access them with the property in plural
            Text { text:"How many email accounts?:" + myContact.emails.length }
            Text { text:"Email[0]:" + myContact.emails[0].emailAddress }

            Text { text:"How many phone numbers?:" + myContact.phoneNumbers.length }
            Text { text:"phone number[0]:" + myContact.phoneNumbers[0].number }
            Text { text:"phone number[1]:" + myContact.phoneNumbers[1].number }
            Text { text:"phone number[2]:" + myContact.phoneNumbers[2].number }
        }
    }

    \endcode

    \section1 Reference documentation

    \section2 Main Classes
    \annotatedlist qml-contacts-main

    \section2 Detail Leaf Classes
    \annotatedlist qml-contacts-details

    \section2 Item matching and filtering
    \annotatedlist qml-contacts-filters

    \section2 Examples

    The following sample applications show examples of API usage:
    \list
        \li \l{qmlcontactslistview}{Qt Quick Contacts List view}
    \endlist

*/
