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| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --> |
| <html> |
| <header><title>Comet Simple Chat Application</title> |
| |
| <script type="text/javascript" src="../../dojo/dojo.js.uncompressed.js"></script> |
| <script type="text/javascript" src="../../dojox/cometd.js"></script> |
| <script type="text/javascript" src="../../dojox/cometd/_base.js"></script> |
| |
| <script type="text/javascript"> |
| |
| dojo.require("dojox.cometd"); |
| |
| dojo.addOnLoad(function() { |
| dojo.byId("message").style.visibility='hidden'; |
| dojox.cometd.init("/cometd/cometd"); |
| }); |
| |
| |
| function trim(str) { |
| return str.replace(/(^\s+|\s+$)/g,''); |
| } |
| |
| |
| function clear() { |
| dojo.byId("msgtext").value = ""; |
| dojo.byId("msgtext").focus(); |
| } |
| |
| |
| function enterKeyHandler(e) { |
| if (!e) e = window.event; |
| if (e.keyCode == 13) { |
| send(trim(dojo.byId("msgtext").value)); |
| clear(); |
| } |
| |
| } |
| |
| |
| function connect() { |
| dojox.cometd.subscribe("/chat/demo", onMsgEvent); |
| dojo.byId("login").style.visibility='hidden'; |
| dojo.byId("message").style.visibility='visible'; |
| send("Has joined the chat room"); |
| clear(); |
| dojo.byId("msgtext").onkeydown = enterKeyHandler; |
| dojo.byId("myname").appendChild(document.createTextNode("-> " + dojo.byId("scrname").value + " <-")); |
| } |
| |
| |
| function onMsgEvent(event) { |
| |
| // Break apart the text string into screen name and message parts. |
| var str = trim(event.data.msg); |
| var scrname = ""; |
| if (str.match(/^.*[|].*$/)) { |
| var spl = str.split("|"); |
| scrname = spl[0]; |
| str = " - " + spl[1]; |
| } |
| |
| // Insert the screen name in red and the message black into the DOM |
| var newP = document.createElement("p"); |
| var fnt1 = document.createElement("font"); |
| var attr1 = document.createAttribute("color"); |
| attr1.nodeValue = "red"; |
| fnt1.setAttributeNode(attr1); |
| |
| var newT = document.createTextNode(scrname); |
| fnt1.appendChild(newT); |
| |
| newP.appendChild(fnt1); |
| |
| var fnt2 = document.createElement("font"); |
| var attr2 = document.createAttribute("color"); |
| attr2.nodeValue = "black"; |
| fnt2.setAttributeNode(attr2); |
| |
| var newT2 = document.createTextNode(str); |
| fnt2.appendChild(newT2); |
| |
| newP.appendChild(fnt2); |
| |
| dojo.byId("dialog").appendChild(newP) |
| } |
| |
| |
| function send(msg) { |
| var scrname = dojo.byId("scrname").value; |
| var evt = {'data': { 'msg': trim(scrname) + '|' + msg }}; |
| onMsgEvent(evt); // Echo local |
| dojox.cometd.publish("/chat/demo", evt.data); |
| } |
| |
| |
| </script> |
| |
| </head> |
| </header> |
| <body> |
| <form> |
| <div id="login"> |
| Screen name: <input type="text" id="scrname"> |
| <input type=Button Id=logbtn value=Connect onClick=connect()><br/>Type a screen name and click the 'Connect' button |
| </div> |
| |
| <div id="dialog"></div> |
| <hr/> |
| <div id="message"> |
| <div id="myname"></div> Is my screen name<br/> |
| <textarea rows="3" cols="50" id="msgtext"></textarea>[ENTER] sends message</div> |
| </form> |
| </body> |
| </html> |
| |
