Qt Documentation

index.html Example File

standalone/index.html

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <script type="text/javascript" src="./qwebchannel.js"></script>
        <script type="text/javascript">
            //BEGIN SETUP
            function output(message) {
                var output = document.getElementById("output");
                output.innerHTML = output.innerHTML + message + "\n";
            }
            window.onload = function() {
                if (location.search != "")
                    var baseUrl = (/[?&]webChannelBaseUrl=([A-Za-z0-9\-:/\.]+)/.exec(location.search)[1]);
                else
                    var baseUrl = "ws://localhost:12345";

                output("Connecting to WebSocket server at " + baseUrl + ".");
                var socket = new WebSocket(baseUrl);

                socket.onclose = function() {
                    console.error("web channel closed");
                };
                socket.onerror = function(error) {
                    console.error("web channel error: " + error);
                };
                socket.onopen = function() {
                    output("WebSocket connected, setting up QWebChannel.");
                    new QWebChannel(socket, function(channel) {
                        // make core object accessible globally
                        window.core = channel.objects.core;

                        document.getElementById("send").onclick = function() {
                            var input = document.getElementById("input");
                            var text = input.value;
                            if (!text) {
                                return;
                            }

                            output("Sent message: " + text);
                            input.value = "";
                            core.receiveText(text);
                        }

                        core.sendText.connect(function(message) {
                            output("Received message: " + message);
                        });

                        core.receiveText("Client connected, ready to send/receive messages!");
                        output("Connected to WebChannel, ready to send/receive messages!");
                    });
                }
            }
            //END SETUP
        </script>
        <style type="text/css">
            html {
                height: 100%;
                width: 100%;
            }
            #input {
                width: 400px;
                margin: 0 10px 0 0;
            }
            #send {
                width: 90px;
                margin: 0;
            }
            #output {
                width: 500px;
                height: 300px;
            }
        </style>
    </head>
    <body>
        <textarea id="output"></textarea><br />
        <input id="input" /><input type="submit" id="send" value="Send" onclick="javascript:click();" />
    </body>
</html>

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