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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 -->
<div class="descr"> <a name="details"></a>
<pre class="qml">
<span class="comment">/****************************************************************************
**
** 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:
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** notice, this list of conditions and the following disclaimer.
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
**
****************************************************************************/</span>
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
<span class="type">ApplicationWindow</span> {
<span class="name">id</span>: <span class="name">root</span>
property <span class="type">var</span> <span class="name">channel</span>
property <span class="type">string</span> <span class="name">loginName</span>: <span class="name">loginUi</span>.<span class="name">userName</span>.<span class="name">text</span>
<span class="name">title</span>: <span class="string">"Chat client"</span>
<span class="name">width</span>: <span class="number">640</span>
<span class="name">height</span>: <span class="number">480</span>
<span class="name">visible</span>: <span class="number">true</span>
<span class="type">WebSocket</span> {
<span class="name">id</span>: <span class="name">socket</span>
<span class="comment">// the following three properties/functions are required to align the QML WebSocket API</span>
<span class="comment">// with the HTML5 WebSocket API.</span>
property <span class="type">var</span> <span class="name">send</span>: <span class="keyword">function</span>(<span class="name">arg</span>) {
<span class="name">sendTextMessage</span>(<span class="name">arg</span>);
}
<span class="name">onTextMessageReceived</span>: {
<span class="name">onmessage</span>({data: <span class="name">message</span>});
}
property <span class="type">var</span> <span class="name">onmessage</span>
<span class="name">active</span>: <span class="number">true</span>
<span class="name">url</span>: <span class="string">"ws://localhost:12345"</span>
<span class="name">onStatusChanged</span>: {
<span class="keyword">switch</span> (<span class="name">socket</span>.<span class="name">status</span>) {
<span class="keyword">case</span> <span class="name">WebSocket</span>.<span class="name">Error</span>:
<span class="name">errorDialog</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">"Error: "</span> <span class="operator">+</span> <span class="name">socket</span>.<span class="name">errorString</span>;
<span class="name">errorDialog</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="name">WebSocket</span>.<span class="name">Closed</span>:
<span class="name">errorDialog</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">"Error: Socket at "</span> <span class="operator">+</span> <span class="name">url</span> <span class="operator">+</span> <span class="string">" closed."</span>;
<span class="name">errorDialog</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="keyword">break</span>;
<span class="keyword">case</span> <span class="name">WebSocket</span>.<span class="name">Open</span>:
<span class="comment">//open the webchannel with the socket as transport</span>
new <span class="name">WebChannel</span>.<span class="name">QWebChannel</span>(<span class="name">socket</span>, <span class="keyword">function</span>(<span class="name">ch</span>) {
<span class="name">root</span>.<span class="name">channel</span> <span class="operator">=</span> <span class="name">ch</span>;
<span class="comment">//connect to the changed signal of the userList property</span>
<span class="name">ch</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">userListChanged</span>.<span class="name">connect</span>(<span class="keyword">function</span>(<span class="name">args</span>) {
<span class="name">mainUi</span>.<span class="name">userlist</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">''</span>;
<span class="name">ch</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">userList</span>.<span class="name">forEach</span>(<span class="keyword">function</span>(<span class="name">user</span>) {
<span class="name">mainUi</span>.<span class="name">userlist</span>.<span class="name">text</span> <span class="operator">+=</span> <span class="name">user</span> <span class="operator">+</span> <span class="string">'\n'</span>;
});
});
<span class="comment">//connect to the newMessage signal</span>
<span class="name">ch</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">newMessage</span>.<span class="name">connect</span>(<span class="keyword">function</span>(<span class="name">time</span>, user, message) {
var <span class="name">line</span> = <span class="string">"["</span> <span class="operator">+</span> <span class="name">time</span> <span class="operator">+</span> <span class="string">"] "</span> <span class="operator">+</span> <span class="name">user</span> <span class="operator">+</span> <span class="string">": "</span> <span class="operator">+</span> <span class="name">message</span> <span class="operator">+</span> <span class="string">'\n'</span>;
<span class="name">mainUi</span>.<span class="name">chat</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">mainUi</span>.<span class="name">chat</span>.<span class="name">text</span> <span class="operator">+</span> <span class="name">line</span>;
});
<span class="comment">//connect to the keep alive signal</span>
<span class="name">ch</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">keepAlive</span>.<span class="name">connect</span>(<span class="keyword">function</span>(<span class="name">args</span>) {
<span class="keyword">if</span> (<span class="name">loginName</span> <span class="operator">!==</span> <span class="string">''</span>)
<span class="comment">//and call the keep alive response method as an answer</span>
<span class="name">ch</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">keepAliveResponse</span>(<span class="name">loginName</span>);
});
});
<span class="name">loginWindow</span>.<span class="name">show</span>();
<span class="keyword">break</span>;
}
}
}
<span class="type">MainForm</span> {
<span class="name">id</span>: <span class="name">mainUi</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="type">Connections</span> {
<span class="name">target</span>: <span class="name">mainUi</span>.<span class="name">message</span>
<span class="name">onEditingFinished</span>: {
<span class="keyword">if</span> (<span class="name">mainUi</span>.<span class="name">message</span>.<span class="name">text</span>.<span class="name">length</span>) {
<span class="comment">//call the sendMessage method to send the message</span>
<span class="name">root</span>.<span class="name">channel</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">sendMessage</span>(<span class="name">loginName</span>,
<span class="name">mainUi</span>.<span class="name">message</span>.<span class="name">text</span>);
}
<span class="name">mainUi</span>.<span class="name">message</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">''</span>;
}
}
}
<span class="type">Window</span> {
<span class="name">id</span>: <span class="name">loginWindow</span>
<span class="name">title</span>: <span class="string">"Login"</span>
<span class="name">modality</span>: <span class="name">Qt</span>.<span class="name">ApplicationModal</span>
<span class="name">width</span>: <span class="number">300</span>
<span class="name">height</span>: <span class="number">200</span>
<span class="type">LoginForm</span> {
<span class="name">id</span>: <span class="name">loginUi</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="name">nameInUseError</span>.visible: <span class="number">false</span>
<span class="type">Connections</span> {
<span class="name">target</span>: <span class="name">loginUi</span>.<span class="name">loginButton</span>
<span class="name">onClicked</span>: {
<span class="comment">//call the login method</span>
<span class="name">root</span>.<span class="name">channel</span>.<span class="name">objects</span>.<span class="name">chatserver</span>.<span class="name">login</span>(<span class="name">loginName</span>, <span class="keyword">function</span>(<span class="name">arg</span>) {
<span class="comment">//check the return value for success</span>
<span class="keyword">if</span> (<span class="name">arg</span> <span class="operator">===</span> <span class="number">true</span>) {
<span class="name">loginUi</span>.<span class="name">nameInUseError</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">loginWindow</span>.<span class="name">close</span>();
} <span class="keyword">else</span> {
<span class="name">loginUi</span>.<span class="name">nameInUseError</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">true</span>;
}
});
}
}
}
}
<span class="type">MessageDialog</span> {
<span class="name">id</span>: <span class="name">errorDialog</span>
<span class="name">icon</span>: <span class="name">StandardIcon</span>.<span class="name">Critical</span>
<span class="name">standardButtons</span>: <span class="name">StandardButton</span>.<span class="name">Close</span>
<span class="name">title</span>: <span class="string">"Chat client"</span>
<span class="name">onAccepted</span>: {
<span class="name">Qt</span>.<span class="name">quit</span>();
}
<span class="name">onRejected</span>: {
<span class="name">Qt</span>.<span class="name">quit</span>();
}
}
}
</pre>
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<!-- @@@chatclient-qml/qmlchatclient.qml -->
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