| Comran Morshed | c4ce951 | 2015-03-08 11:51:09 +0000 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | |
| 4 | <head> |
| 5 | <title>Hello, world</title> |
| 6 | <script type="text/javascript"> |
| 7 | var escapable = |
| 8 | /[\x00-\x1f\ud800-\udfff\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufff0-\uffff]/g; |
| 9 | var ws; |
| 10 | var intervalTime = 50; |
| 11 | var safetyTimeout; |
| 12 | var safetyIntervalTime = 10; |
| 13 | var selected = 0; |
| 14 | |
| 15 | // Filter out junky JSON packets that will otherwise cause nasty decoding errors. |
| 16 | function filterUnicode(quoted) { |
| 17 | escapable.lastIndex = 0; |
| 18 | if (!escapable.test(quoted)) return quoted; |
| 19 | |
| 20 | return quoted.replace(escapable, function(a) { |
| 21 | return ''; |
| 22 | }); |
| 23 | } |
| 24 | |
| 25 | // Change the current data index to plot on the graph. |
| 26 | function changeSelected(select) { |
| 27 | selected = select; |
| 28 | document.getElementById("selected").innerHTML = "Selected: " + selected; |
| 29 | } |
| 30 | |
| 31 | // Get a new JSON packet from the websocket on the robot. |
| 32 | function refresh() { |
| 33 | ws.send(lastSampleID); |
| 34 | safetyTimeout = setTimeout(safetyRefresh, safetyIntervalTime); |
| 35 | } |
| 36 | |
| 37 | function safetyRefresh(){ |
| 38 | console.log("Safety timeout exceeded. Performing additional refresh..."); |
| 39 | refresh(); |
| 40 | } |
| 41 | |
| 42 | window.onload = function() { |
| 43 | var dps = []; |
| 44 | var numDatas = 0; |
| 45 | var chart = new CanvasJS.Chart("chartContainer", { |
| 46 | title: { |
| 47 | text: "Live Data" |
| 48 | }, |
| 49 | axisX: { |
| 50 | title: "Time (sec)" |
| 51 | }, |
| 52 | axisY: { |
| 53 | title: "Units" |
| 54 | }, |
| 55 | zoomEnabled: true, |
| 56 | panEnabled: true, |
| 57 | data: [{ |
| 58 | color: 'rgba(119, 152, 191, 1.0)', |
| 59 | type: "scatter", |
| 60 | dataPoints: dps |
| 61 | }], |
| 62 | }); |
| 63 | |
| 64 | chart.render(); |
| 65 | |
| 66 | $(function() { |
| 67 | ws = new WebSocket('ws://' + document.location.host + '/ws'); |
| 68 | run = true; |
| 69 | xVal = 1; |
| 70 | lastSampleID = -1; |
| 71 | |
| 72 | // Socket created & first opened. |
| 73 | ws.onopen = function() { |
| 74 | run = true; |
| 75 | refresh(); |
| 76 | }; |
| 77 | |
| 78 | // Socket disconnected. |
| 79 | ws.onclose = function() { |
| 80 | console.log('onclose'); |
| 81 | run = false; |
| 82 | $('#message').text('Lost connection.'); |
| 83 | }; |
| 84 | |
| 85 | // Received message over the socket, so parse and chart it. |
| 86 | ws.onmessage = function(message) { |
| 87 | console.log(message); |
| 88 | clearTimeout(safetyTimeout); |
| 89 | message = message.data; |
| 90 | //$('#data').html(message); |
| 91 | if(message.charAt(0) == "*"){ |
| 92 | message = message.substring(1); |
| 93 | var names = message.split(","); |
| 94 | for (var i = numDatas; i < names.length; i++) { |
| 95 | $('#dataTable').append('<tr onClick="changeSelected(' + i + |
| 96 | ')"><td>' + names[i] + '</td><td></td></tr>'); |
| 97 | numDatas++; |
| 98 | } |
| 99 | lastSampleID = 0; |
| 100 | }else{ |
| 101 | var samples = message.split("$"); |
| 102 | for(var x = 0;x < samples.length;x++){ |
| 103 | var info = samples[x].split("%"); |
| 104 | lastSampleID = info[0]; |
| 105 | |
| 106 | if(!(typeof info[2] === "undefined")){ |
| 107 | var values = info[2].split(","); |
| 108 | for(var y = 0;y < values.length;y++){ |
| 109 | if(!(typeof info[1] === "undefined" |
| 110 | || typeof values[y] === "undefined")){ |
| 111 | $('#dataTable').find('tr').eq(y).find('td').eq(1) |
| 112 | .text(values[y]); |
| 113 | if(y == selected){ |
| 114 | dps.push({ |
| 115 | x: parseFloat(info[1]), |
| 116 | y: parseFloat(values[y]) |
| 117 | }); |
| 118 | if(dps.length > 10000){ |
| 119 | dps.shift(); |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | chart.render(); |
| 128 | } |
| 129 | |
| 130 | if(run){ |
| 131 | setTimeout(refresh, intervalTime); |
| 132 | } |
| 133 | }; |
| 134 | |
| 135 | // Socket error, most likely due to a server-side error. |
| 136 | ws.onerror = function(error) { |
| 137 | console.log('onerror ' + error); |
| 138 | run = false; |
| 139 | }; |
| 140 | }); |
| 141 | } |
| 142 | </script> |
| 143 | <script type="text/javascript" src='/lib/jquery-1.4.4.js'></script> |
| 144 | <script type="text/javascript" src='/lib/canvasjs.min.js'></script> |
| 145 | <script type="text/javascript" src='/lib/reconnecting-websocket.min.js'></script> |
| 146 | </head> |
| 147 | <body> |
| 148 | <div style="width: 1200px;margin-left: auto;margin-right:auto"> |
| 149 | <table id="dataTable" style="width: 200px;cell-spacing:0;cell-padding:0; |
| 150 | text-align:left"> |
| 151 | </table> |
| 152 | <div id="chartContainer" style="height:600px; width:100%;"></div> |
| 153 | <div style="width: 1000px;float: right"> |
| 154 | <p id="message" style="color: #FF0000"></p> |
| 155 | <p id="selected">Selected: 0</p> |
| 156 | <p id="data"></p> |
| 157 | </div> |
| 158 | </div> |
| 159 | </body> |
| 160 | </html> |