Login.qml Example File | Enginio QML Types and Examples 1.2

- Enginio Manual
- Enginio QML Types and Examples
- Enginio QML Examples - Users
- Login.qml Example File
- Enginio 1.2.1 Reference Documentation

# Login.qml Example File

users/Login.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the QtEnginio module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    import QtQuick 2.1
    import Enginio 1.0
    import QtQuick.Controls 1.0
    import QtQuick.Layouts 1.0

    ColumnLayout {
        EnginioOAuth2Authentication {
            id: identity
            user: login.text
            password: password.text
        }
        anchors.fill: parent
        anchors.margins: 3
        spacing: 3

        TextField {
            id: login
            Layout.fillWidth: true
            placeholderText: "Username"
            enabled: enginioClient.authenticationState == Enginio.NotAuthenticated
        }

        TextField {
            id: password
            Layout.fillWidth: true
            placeholderText: "Password"
            echoMode: TextInput.PasswordEchoOnEdit
            enabled: enginioClient.authenticationState == Enginio.NotAuthenticated
        }

        Button {
            id: proccessButton
            Layout.fillWidth: true
        }

        TextArea {
            id: data
            text: "Not logged in.\n\n"
            readOnly: true
            Layout.fillHeight: true
            Layout.fillWidth: true

            Connections {
                target: enginioClient
                onSessionAuthenticated: {
                    data.text = data.text + "User '"+ login.text +"' is logged in.\n\n" + JSON.stringify(reply.data, undefined, 2) + "\n\n"
                }
                onSessionAuthenticationError: {
                    data.text = data.text + "Authentication of user '"+ login.text +"' failed.\n\n" + JSON.stringify(reply.data, undefined, 2) + "\n\n"
                }
                onSessionTerminated: {
                    data.text = data.text + "Session closed.\n\n"
                }
            }
        }

        states: [
            State {
                name: "NotAuthenticated"
                when: enginioClient.authenticationState == Enginio.NotAuthenticated
                PropertyChanges {
                    target: proccessButton
                    text: "Login"
                    onClicked: {
                        enginioClient.identity = identity
                    }
                }
            },
            State {
                name: "Authenticating"
                when: enginioClient.authenticationState == Enginio.Authenticating
                PropertyChanges {
                    target: proccessButton
                    text: "Authenticating..."
                    enabled: false
                }
            },
            State {
                name: "AuthenticationFailure"
                when: enginioClient.authenticationState == Enginio.AuthenticationFailure
                PropertyChanges {
                    target: proccessButton
                    text: "Authentication failed, restart"
                    onClicked: {
                        enginioClient.identity = null
                    }
                }
            },
            State {
                name: "Authenticated"
                when: enginioClient.authenticationState == Enginio.Authenticated
                PropertyChanges {
                    target: proccessButton
                    text: "Logout"
                    onClicked: {
                        enginioClient.identity = null
                    }
                }
            }
        ]
    }