| // |
| // 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. |
| // |
| |
| // |
| // Based on http://antony.lesuisse.org/software/ajaxterm/ |
| // Public Domain License |
| // |
| |
| gogo = { }; |
| |
| gogo.Terminal_ctor = function(div, width, height) { |
| |
| var query0 = "w=" + width + "&h=" + height; |
| var query1 = query0 + "&k="; |
| var buf = ""; |
| var timeout; |
| var error_timeout; |
| var keybuf = []; |
| var sending = 0; |
| var rmax = 1; |
| var force = 1; |
| |
| var dstat = document.createElement('pre'); |
| var sled = document.createElement('span'); |
| var sdebug = document.createElement('span'); |
| var dterm = document.createElement('div'); |
| |
| function debug(s) { |
| sdebug.innerHTML = s; |
| } |
| |
| function error() { |
| sled.className = 'off'; |
| debug("Connection lost timeout ts:" + ((new Date).getTime())); |
| } |
| |
| function update() { |
| if (sending == 0) { |
| sending = 1; |
| sled.className = 'on'; |
| var r = new XMLHttpRequest(); |
| var send = ""; |
| while (keybuf.length > 0) { |
| send += keybuf.pop(); |
| } |
| var query = query1 + send; |
| if (force) { |
| query = query + "&f=1"; |
| force = 0; |
| } |
| r.open("POST", "gogo", true); |
| r.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); |
| r.onreadystatechange = function () { |
| if (r.readyState == 4) { |
| if (r.status == 200) { |
| window.clearTimeout(error_timeout); |
| if (r.responseText.length > 0) { |
| dterm.innerHTML = r.responseText; |
| rmax = 100; |
| } else { |
| rmax *= 2; |
| if (rmax > 2000) |
| rmax = 2000; |
| } |
| sending=0; |
| sled.className = 'off'; |
| timeout = window.setTimeout(update, rmax); |
| } else { |
| debug("Connection error status:" + r.status); |
| } |
| } |
| } |
| error_timeout = window.setTimeout(error, 5000); |
| r.send(query); |
| } |
| } |
| |
| function queue(s) { |
| keybuf.unshift(s); |
| if (sending == 0) { |
| window.clearTimeout(timeout); |
| timeout = window.setTimeout(update, 1); |
| } |
| } |
| |
| function keypress(ev, fromkeydown) { |
| // Translate to standard keycodes |
| if (!ev) |
| ev = window.event; |
| var kc; |
| if (ev.keyCode) |
| kc = ev.keyCode; |
| if (!fromkeydown && ev.which) |
| kc = ev.which; |
| if (ev.ctrlKey) { |
| if (kc >= 0 && kc <= 32) |
| kc = kc; |
| else if (kc >= 65 && kc <= 90) |
| kc -= 64; |
| else if (kc >= 97 && kc <= 122) |
| kc -= 96; |
| else { |
| switch (kc) { |
| case 54: kc=30; break; // Ctrl-^ |
| case 109: kc=31; break; // Ctrl-_ |
| case 219: kc=27; break; // Ctrl-[ |
| case 220: kc=28; break; // Ctrl-\ |
| case 221: kc=29; break; // Ctrl-] |
| default: return true; |
| } |
| } |
| } else if (fromkeydown) { |
| switch(kc) { |
| case 8: break; // Backspace |
| case 9: break; // Tab |
| case 27: break; // ESC |
| case 33: kc = 63276; break; // PgUp |
| case 34: kc = 63277; break; // PgDn |
| case 35: kc = 63275; break; // End |
| case 36: kc = 63273; break; // Home |
| case 37: kc = 63234; break; // Left |
| case 38: kc = 63232; break; // Up |
| case 39: kc = 63235; break; // Right |
| case 40: kc = 63233; break; // Down |
| case 45: kc = 63302; break; // Ins |
| case 46: kc = 63272; break; // Del |
| case 112: kc = 63236; break; // F1 |
| case 113: kc = 63237; break; // F2 |
| case 114: kc = 63238; break; // F3 |
| case 115: kc = 63239; break; // F4 |
| case 116: kc = 63240; break; // F5 |
| case 117: kc = 63241; break; // F6 |
| case 118: kc = 63242; break; // F7 |
| case 119: kc = 63243; break; // F8 |
| case 120: kc = 63244; break; // F9 |
| case 121: kc = 63245; break; // F10 |
| case 122: kc = 63246; break; // F11 |
| case 123: kc = 63247; break; // F12 |
| default: return true; |
| } |
| } |
| |
| var k = ""; |
| // Build character |
| switch (kc) { |
| case 126: k = "~~"; break; |
| case 63232: k = "~A"; break; // Up |
| case 63233: k = "~B"; break; // Down |
| case 63234: k = "~D"; break; // Left |
| case 63235: k = "~C"; break; // Right |
| case 63276: k = "~1"; break; // PgUp |
| case 63277: k = "~2"; break; // PgDn |
| case 63273: k = "~H"; break; // Home |
| case 63275: k = "~F"; break; // End |
| case 63302: k = "~3"; break; // Ins |
| case 63272: k = "~4"; break; // Del |
| case 63236: k = "~a"; break; // F1 |
| case 63237: k = "~b"; break; // F2 |
| case 63238: k = "~c"; break; // F3 |
| case 63239: k = "~d"; break; // F4 |
| case 63240: k = "~e"; break; // F5 |
| case 63241: k = "~f"; break; // F6 |
| case 63242: k = "~g"; break; // F7 |
| case 63243: k = "~h"; break; // F8 |
| case 63244: k = "~i"; break; // F9 |
| case 63245: k = "~j"; break; // F10 |
| case 63246: k = "~k"; break; // F11 |
| case 63247: k = "~l"; break; // F12 |
| default: k = String.fromCharCode(kc); break; |
| } |
| |
| // debug("fromkeydown=" + fromkeydown + ", ev.keyCode=" + ev.keyCode + ", " + |
| // "ev.which=" + ev.which + ", ev.ctrlKey=" + ev.ctrlKey + ", " + |
| // "kc=" + kc + ", k=" + k); |
| |
| queue(encodeURIComponent(k)); |
| |
| ev.cancelBubble = true; |
| if (ev.stopPropagation) ev.stopPropagation(); |
| if (ev.preventDefault) ev.preventDefault(); |
| |
| return true; |
| } |
| |
| function keydown(ev) { |
| if (!ev) |
| ev = window.event; |
| o = { 9:1, 8:1, 27:1, 33:1, 34:1, 35:1, 36:1, 37:1, 38:1, 39:1, 40:1, 45:1, 46:1, 112:1, |
| 113:1, 114:1, 115:1, 116:1, 117:1, 118:1, 119:1, 120:1, 121:1, 122:1, 123:1 }; |
| if (o[ev.keyCode] || ev.ctrlKey || ev.altKey) { |
| keypress(ev, true); |
| } |
| } |
| |
| function init() { |
| if (typeof(XMLHttpRequest) == "undefined") { |
| XMLHttpRequest = function() { |
| try { return new ActiveXObject("Msxml2.XMLHTTP.6.0"); } |
| catch(e) {} |
| try { return new ActiveXObject("Msxml2.XMLHTTP.3.0"); } |
| catch(e) {} |
| try { return new ActiveXObject("Msxml2.XMLHTTP"); } |
| catch(e) {} |
| try { return new ActiveXObject("Microsoft.XMLHTTP"); } |
| catch(e) {} |
| throw new Error("This browser does not support XMLHttpRequest."); |
| }; |
| } |
| sled.appendChild(document.createTextNode('\xb7')); |
| sled.className = 'off'; |
| dstat.appendChild(sled); |
| dstat.appendChild(document.createTextNode(' ')); |
| dstat.appendChild(sdebug); |
| dstat.className = 'stat'; |
| div.appendChild(dstat); |
| var d = document.createElement('div'); |
| d.appendChild(dterm); |
| div.appendChild(d); |
| document.onkeypress = keypress; |
| document.onkeydown = keydown; |
| timeout = window.setTimeout(update, 100); |
| } |
| |
| init(); |
| |
| } |
| |
| gogo.Terminal = function(div, width, height) { |
| return new this.Terminal_ctor(div, width, height); |
| } |
| |
