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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Copyright (C) 2016 basysKom GmbH, author Bernd Lamecker <bernd.lamecker@basyskom.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebChannel module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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 2.2
import QtQuick.Dialogs 1.2
import QtQuick.Controls 2.0
import QtQuick.Window 2.0
import QtQuick.Layouts 1.1
import Qt.WebSockets 1.0
import "qwebchannel.js" as WebChannel
ApplicationWindow {
id: root
property var channel
property string loginName: loginUi.userName.text
title: "Chat client"
width: 640
height: 480
visible: true
WebSocket {
id: socket
// the following three properties/functions are required to align the QML WebSocket API
// with the HTML5 WebSocket API.
property var send: function(arg) {
sendTextMessage(arg);
}
onTextMessageReceived: {
onmessage({data: message});
}
property var onmessage
active: true
url: "ws://localhost:12345"
onStatusChanged: {
switch (socket.status) {
case WebSocket.Error:
errorDialog.text = "Error: " + socket.errorString;
errorDialog.visible = true;
break;
case WebSocket.Closed:
errorDialog.text = "Error: Socket at " + url + " closed.";
errorDialog.visible = true;
break;
case WebSocket.Open:
//open the webchannel with the socket as transport
new WebChannel.QWebChannel(socket, function(ch) {
root.channel = ch;
//connect to the changed signal of the userList property
ch.objects.chatserver.userListChanged.connect(function(args) {
mainUi.userlist.text = '';
ch.objects.chatserver.userList.forEach(function(user) {
mainUi.userlist.text += user + '\n';
});
});
//connect to the newMessage signal
ch.objects.chatserver.newMessage.connect(function(time, user, message) {
var line = "[" + time + "] " + user + ": " + message + '\n';
mainUi.chat.text = mainUi.chat.text + line;
});
//connect to the keep alive signal
ch.objects.chatserver.keepAlive.connect(function(args) {
if (loginName !== '')
//and call the keep alive response method as an answer
ch.objects.chatserver.keepAliveResponse(loginName);
});
});
loginWindow.show();
break;
}
}
}
MainForm {
id: mainUi
anchors.fill: parent
Connections {
target: mainUi.message
onEditingFinished: {
if (mainUi.message.text.length) {
//call the sendMessage method to send the message
root.channel.objects.chatserver.sendMessage(loginName,
mainUi.message.text);
}
mainUi.message.text = '';
}
}
}
Window {
id: loginWindow
title: "Login"
modality: Qt.ApplicationModal
width: 300
height: 200
LoginForm {
id: loginUi
anchors.fill: parent
nameInUseError.visible: false
Connections {
target: loginUi.loginButton
onClicked: {
//call the login method
root.channel.objects.chatserver.login(loginName, function(arg) {
//check the return value for success
if (arg === true) {
loginUi.nameInUseError.visible = false;
loginWindow.close();
} else {
loginUi.nameInUseError.visible = true;
}
});
}
}
}
}
MessageDialog {
id: errorDialog
icon: StandardIcon.Critical
standardButtons: StandardButton.Close
title: "Chat client"
onAccepted: {
Qt.quit();
}
onRejected: {
Qt.quit();
}
}
}
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