X-Git-Url: http://git.scottworley.com/reliable-chat/blobdiff_plain/b22a2cedc1be7e6448f6168ce1256e87733573b4..270d2ae5829e1d66dcc1a0fb78ba3c2e3c3c22de:/webclient/rc.html diff --git a/webclient/rc.html b/webclient/rc.html index 9460159..03b034a 100644 --- a/webclient/rc.html +++ b/webclient/rc.html @@ -1,12 +1,29 @@ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> - <html xmlns="http://www.w3.org/1999/xhtml"> +<!-- + reliable-chat - multipath chat + Copyright (C) 2012 Scott Worley <sworley@chkno.net> + Copyright (C) 2012 Jason Hibbs <skitch@gmail.com> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +--> <head> <title>Reliable Chat</title> <style type="text/css"><!--/*--><![CDATA[/*><!--*/ html, body { - width: 99.9%; + width: 100%; height: 100%; margin: 0; padding: 0; @@ -14,6 +31,9 @@ color: silver; font-family: monospace; } + a { + color: #ddd; + } #container { height: 100%; } @@ -24,9 +44,7 @@ padding: 5px 5px 5px 0px; } #client { - width: 98.5%; - padding: 0px 0px 0px 5px; - height: 50px; + width: 100%; position: fixed; bottom: 0; } @@ -36,8 +54,32 @@ } #say { width: 100% } #history { - padding: 0px 5px 55px 5px; - vertical-align: bottom + padding: 0px 5px 30px 5px; + vertical-align: bottom; + } + .banner { + font-size: 85%; + text-align: right; + } + .servercount { + margin-right: -0.5em; + font-size: 70%; + } + .timestamp:hover, .timestamp:hover .servertimestamps { + background-color: #556; + } + .timestamp:hover .servertimestamps { + display: block; + } + .servertimestamps { + display: none; + position: absolute; + left: 3em; + z-index: 1; + border: 1px solid black; + border-radius: 5px; + padding-left: 5px; + padding-right: 5px; } img { width: 1px; height: 1px; } iframe { display: none } @@ -58,12 +100,65 @@ padding-left: 5px; padding-right: 5px; } + + /* BEGIN expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */ + .expandingArea { + position: relative; + border: 1px solid #888; + background: silver; + } + .expandingArea > textarea, + .expandingArea > pre { + margin: 0; + outline: 0; + border: 0; + padding: 5px; + background: transparent; + font: 400 13px/16px helvetica, arial, sans-serif; + /* Make the text soft-wrap */ + white-space: pre-wrap; + word-wrap: break-word; + } + .expandingArea > textarea { + /* The border-box box model is used to allow + * padding whilst still keeping the overall width + * at exactly that of the containing element. + */ + -webkit-box-sizing: border-box; + -moz-box-sizing: border-box; + -ms-box-sizing: border-box; + box-sizing: border-box; + width: 100%; + /* Hide any scrollbars */ + overflow: hidden; + position: absolute; + top: 0; + left: 0; + height: 100%; + /* Remove WebKit user-resize widget */ + resize: none; + } + .expandingArea > pre { + display: block; + /* Hide the text; just using it for sizing */ + visibility: hidden; + } + /* END expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */ + /*]]>*/--></style> <script type="text/javascript"><!--//--><![CDATA[//><!-- var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com']; - var session = Math.random(); - var seen = {}; + var session = Math.random(); // For outgoing message IDs + var since = {}; // server -> time: For fetch?since= + var seen = {}; // seen_key -> message + var history = []; // List of messages sorted by Time + // Messages have these fields: + // Time: The timestamp. Median of ServerTimes + // ID: Some unique string for deduping + // Text: The text of the message + // ServerTimes: server -> timestamp + // UI: The DOM node for this message in the UI function rcnick() { var nick = localStorage.getItem("nick"); @@ -96,71 +191,241 @@ } } + function rcpad2(x) { + return (x < 10 ? "0" : "") + x; + } + function rcpad3(x) { + return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x; + } + + function rcformattime(t) { + var d = t.getDay(); + d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d]; + var h = t.getHours(); + var m = t.getMinutes(); + var s = t.getSeconds(); + return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s); + } + + function rcaddservertimestamptohover(message, server) { + var divs = message.UI.getElementsByTagName("div"); + var t = message.ServerTimes[server]; + for (var i in divs) { + if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") { + var d = document.createElement("div"); + var text = t.getFullYear() + "-" + + rcpad2(t.getMonth()) + "-" + + rcpad2(t.getDay()) + " " + + rcformattime(t) + "." + + rcpad3(t.getMilliseconds()) + " " + + server; + d.appendChild(document.createTextNode(text)); + divs[i].appendChild(d); + } + } + } + + function rcmakemessageUI(message) { + message.UI = document.createElement("div"); + + // Server count + var servercount = document.createElement("span"); + servercount.setAttribute("class", "servercount"); + servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length)); + message.UI.appendChild(servercount); + message.UI.appendChild(document.createTextNode(" ")); + + // Timestamp + var timestamp_text = message.Time ? rcformattime(message.Time) : ""; + var timestamp = document.createElement("span"); + timestamp.setAttribute("class", "timestamp"); + timestamp.appendChild(document.createTextNode(timestamp_text)); + message.UI.appendChild(timestamp); + message.UI.appendChild(document.createTextNode(" ")); + + // Timestamp hover + var timestamp_hover = document.createElement("div"); + timestamp_hover.setAttribute("class", "servertimestamps"); + timestamp.appendChild(timestamp_hover); + for (var server in message.ServerTimes) { + rcaddservertimestamptohover(message, server); + } + + // Classify different message types + var text_span = document.createElement("span"); + var type; + if (/^\*\*\* /.test(message.Text)) { + type = "status"; + } else if (/^\* /.test(message.Text)) { + type = "me"; + } else { + type = "text"; + } + if (Object.keys(message.ServerTimes).length == 0) { + type += " self"; + } + text_span.setAttribute("class", type); + + // URL detection + var text = message.Text; + var URL_re = /\bhttps?:\/\/\S+/; + while (URL_re.test(text)) { + var match = URL_re.exec(text); + var leading_text = text.substr(0, match.index); + if (leading_text) { + text_span.appendChild(document.createTextNode(leading_text)); + } + var anchor = document.createElement("a"); + anchor.setAttribute("rel", "nofollow"); + anchor.setAttribute("href", encodeURI(match[0])); + anchor.appendChild(document.createTextNode(match[0])); + text_span.appendChild(anchor); + text = text.substr(match.index + match[0].length); + } + if (text) { + text_span.appendChild(document.createTextNode(text)); + } + + message.UI.appendChild(text_span); + } + function rcaddmessagetohistory(message) { - var d = document.createElement("div"); - d.appendChild(document.createTextNode(message)); + var message_i; + if (message.Time) { + for (var i = history.length - 1; ; i--) { + if (i < 0 || (history[i].Time && message.Time >= history[i].Time)) { + message_i = i+1; + history.splice(message_i, 0, message); + break; + } + } + } else { + history.push(message); + message_i = history.length-1; + } + + if (!message.UI) { + rcmakemessageUI(message); + } var h = document.getElementById("history"); - h.appendChild(d); + if (message_i + 1 < history.length) { + h.insertBefore(message.UI, history[message_i + 1].UI); + } else { + h.appendChild(message.UI); + } window.scrollTo(0, document.body.scrollHeight); - return d; } function make_seen_key(id, text) { return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@"); } - function receiveMessage(server, time, id, text) { - var seen_key = make_seen_key(id, text); - if (!(seen_key in seen)) { - seen[seen_key] = true; - rcaddmessagetohistory(text); - for (var i in servers) { - rcchangeserverstatus(servers[i], "sad"); + function rcupdatemessagetime(message) { + // Set message.Time to be the median of message.ServerTimes + var times = []; + for (var i in message.ServerTimes) { + times.push(message.ServerTimes[i]); + } + times.sort(); + if (times.length % 2) { + message.Time = times[(times.length-1)/2]; + } else { + var middle = times.length/2; + var difference = times[middle].getTime() - times[middle-1].getTime(); + message.Time = new Date(times[middle-1].getTime() + difference/2); + } + + // This may have broken history's in-sorted-order invariant + var hi = history.indexOf(message); + if ((history[hi-1] && history[hi-1].Time > message.Time) || + (history[hi+1] && history[hi+1].Time < message.Time)) { + history.splice(hi,1); + rcaddmessagetohistory(message); + } + + // Update the UI + var spans = message.UI.getElementsByTagName("span"); + for (var i in spans) { + if (spans[i].getAttribute) { + var type = spans[i].getAttribute("class"); + if (type == "servercount") { + spans[i].firstChild.data = Object.keys(message.ServerTimes).length; + } else if (type == "timestamp") { + spans[i].firstChild.data = rcformattime(message.Time); + } } } - rcchangeserverstatus(server, "happy"); } - function receiveMessageEvent(event) - { - for (var i in servers) { - if (event.origin === rcserverbase(servers[i])) { - messages = JSON.parse(event.data); - for (var j in messages) { - if ('Time' in messages[j] && - 'ID' in messages[j] && - 'Text' in messages[j]) { - receiveMessage(servers[i], messages[j]['Time'], messages[j]['ID'], messages[j]['Text']); + function rcreceivemessages(server, messages) { + for (var i in messages) { + var m = messages[i]; + m.Time = new Date(m.Time); + var seen_key = make_seen_key(m.ID, m.Text); + if (seen_key in seen) { + seen[seen_key].ServerTimes[server] = m.Time; + rcupdatemessagetime(seen[seen_key]); + rcaddservertimestamptohover(seen[seen_key], server); + } else { + m.ServerTimes = {}; + m.ServerTimes[server] = m.Time; + seen[seen_key] = m; + rcaddmessagetohistory(m); + for (var i in servers) { + rcchangeserverstatus(servers[i], "sad"); + } + } + rcchangeserverstatus(server, "happy"); + } + } + + function rcfetch(server) { + var delay = 10000; // TODO: Exponential backoff + var xhr = new XMLHttpRequest(); + xhr.onreadystatechange = function() { + if (this.readyState == this.DONE) { + if (this.status == 200) { + var rtxt = this.responseText; + if (rtxt != null) { + var messages = JSON.parse(rtxt); + if (messages != null) { + delay = 40; + if (messages.length >= 1 && "Time" in messages[messages.length-1]) { + since[server] = messages[messages.length-1].Time; + } + rcreceivemessages(server, messages); + } } } + window.setTimeout(rcfetch, delay, server); } } + var uri = rcserverbase(server) + "/fetch"; + if (server in since) { + uri += '?since="' + since[server] + '"'; + } + xhr.open("GET", uri); + xhr.send(); } function rcconnect() { - window.addEventListener("message", receiveMessageEvent, false); + makeExpandingArea(document.getElementById("expando")); for (var i in servers) { - // Create a hidden iframe for same-origin workaround - var iframe = document.createElement("iframe"); - iframe.setAttribute("src", rcserverbase(servers[i]) + "/frame"); - document.body.insertBefore(iframe, document.body.firstChild); + rcfetch(servers[i]); // Status bar entry var status_indicator = document.createElement("span"); status_indicator.appendChild(document.createTextNode(servers[i])); status_indicator.setAttribute("class", "sad"); document.getElementById("status").appendChild(status_indicator); } - if (rcnick() == 'anonymous') { - rcaddmessagetohistory("-!- Set your nick with /nick"); - } } function rcsend(d, message) { - var id = new Date().getTime() + "-" + session + "-" + Math.random(); - seen[make_seen_key(id, message)] = true; + message.ID = new Date().getTime() + "-" + session + "-" + Math.random(); + seen[make_seen_key(message.ID, message.Text)] = message; var path = "/speak" + - "?id=" + encodeURIComponent(id) + - "&text=" + encodeURIComponent(message); + "?id=" + encodeURIComponent(message.ID) + + "&text=" + encodeURIComponent(message.Text); for (var i in servers) { var uri = rcserverbase(servers[i]) + path; var img = document.createElement("img"); @@ -169,41 +434,52 @@ } } + function rcinput(input) { + var message; + var re = /^\/([a-z]+) (.*)/ + var match = re.exec(input); + if (match && match[1] == 'me') { + message = "* " + rcnick() + " " + match[2]; + } else if (match && match[1] == 'nick') { + message = "*** " + rcnick() + " is now known as " + match[2]; + rcsetnick(match[2]); + } else { + message = "<" + rcnick() + "> " + input; + } + + var m = {'Text': message, 'ServerTimes': {}}; + rcaddmessagetohistory(m); + rcsend(m.UI, m); + } + function rckeydown(event) { if (event.keyCode == 13) { - var input = document.input.say.value; + rcinput(document.input.say.value); document.input.say.value = ""; - - // Check nick change - var message; - var re = /^\/nick (.*)/; - var match = re.exec(input); - if (match) { - message = "*** " + rcnick() + " is now known as " + match[1]; - rcsetnick(match[1]); - } else { - message = "<" + rcnick() + "> " + input; - } - - // /me support - var message; - var re = /^\/me (.*)/; - var match = re.exec(input); - var inputme = input.substring(4); - if (match) { - message = "* " + rcnick() + " " + inputme; - } else { - message = "<" + rcnick() + "> " + input; - } - - // Remind people to set their nick - if (rcnick() == 'anonymous') { - rcaddmessagetohistory("-!- Set your nick with /nick"); - } + return false; + } + } - // Say the message - var d = rcaddmessagetohistory(message); - rcsend(d, message); + // From http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ + function makeExpandingArea(container) { + var area = container.querySelector('textarea'); + var span1 = container.querySelector('span'); + var span2 = document.getElementById('historypad'); + if (area.addEventListener) { + area.addEventListener('input', function() { + span1.textContent = area.value; + span2.textContent = area.value; + }, false); + span1.textContent = area.value; + span2.textContent = area.value; + } else if (area.attachEvent) { + // IE8 compatibility + area.attachEvent('onpropertychange', function() { + span1.innerText = area.value; + span2.innerText = area.value; + }); + span1.innerText = area.value; + span2.innerText = area.value; } } //--><!]]></script> @@ -212,13 +488,20 @@ <body onload="rcconnect()"> <div id="container"> + <div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div> <div id="history"></div> + <div class="expandingArea" style="visibility: hidden"> + <pre><span id="historypad"></span><br></pre> + </div> <div id="client"> <div id="input"> <form name="input" onsubmit="return false" autocomplete="off"> - <input id="say" onkeydown="return rckeydown(event)" autocomplete="off" autofocus="autofocus"></input> + <div id="expando" class="expandingArea"> + <pre><span></span><br></pre> + <textarea id="say" onkeydown="return rckeydown(event)" autofocus="autofocus"></textarea> + </div> </form></div> - <div id="status"> </div> + <div id="status"></div> </div> </div> </body>