From: Scott Worley Date: Fri, 3 Aug 2012 18:51:03 +0000 (-0700) Subject: Preserve history's in-order invariant X-Git-Url: http://git.scottworley.com/reliable-chat/commitdiff_plain/95ba71eedb7e9e9290c817bc7432b50ee6808558?ds=sidebyside Preserve history's in-order invariant In rcupdatemessagetime(). --- diff --git a/webclient/rc.html b/webclient/rc.html index c3284da..27dba59 100644 --- a/webclient/rc.html +++ b/webclient/rc.html @@ -148,9 +148,11 @@ message_i = history.length-1; } - var text = (message.Time ? rcformattime(message.Time) : "") + " " + message.Text; - message.UI = document.createElement("div"); - message.UI.appendChild(document.createTextNode(text)); + if (!message.UI) { + var text = (message.Time ? rcformattime(message.Time) : "") + " " + message.Text; + message.UI = document.createElement("div"); + message.UI.appendChild(document.createTextNode(text)); + } var h = document.getElementById("history"); if (message_i + 1 < history.length) { h.insertBefore(message.UI, history[message_i + 1].UI); @@ -178,6 +180,14 @@ 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); + } } function rcreceivemessages(server, messages) {