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<h1 class="title">qmlchatclient.qml Example File</h1>
<span class="subtitle">chatclient-qml/qmlchatclient.qml</span>
<!-- $$$chatclient-qml/qmlchatclient.qml-description -->
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<pre class="qml">
/****************************************************************************
**
** 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
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** a written agreement between you and The Qt Company. For licensing terms
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** 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
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** * Redistributions of source code must retain the above copyright
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** distribution.
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** from this software without specific prior written permission.
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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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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armv7hl
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a17d7a9648a6454ac7a4e82061019a9e
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files
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30
