/* * ffcountdown.js - A simple countdown counter for Firefox download milestones. * * History: * Version 0.6: * - The script has been modifies to use the est dl field in the feed * Version 0.5: * - Changed to countdown to the next 10th million download. * Version 0.4: * - Added a default counter rate. * - Made minor modifications to the counter status indicator. * - If you don't want the timer on, it doesn't set the timeout. * Version 0.3: * - Changed the timing of HTTP requests to reflect the new feed * refresh rate of once per minute. * - Counter increments on a "tick" instead of a fixed rate. * - Added support for status elements to debug/track counter metrics: * - download rate * - last count * - last time * - HTTP request status * - time until HTTP request * - time between counter ticks * Version 0.2: * - Now calculates download rates between subsequent queries for * better accuracy. * - Only reformats the number on an actual increment. * - Increased the default speed. * Version 0.1: * - Initial release. * * Orginal script: * Copyright 2005 Infocraft * http://www.infocraft.com/ * * ffcountdown: * Asbjørn Sloth Tønnesen * http://asbjorn.biz/ * * The latest version of this script can be found at: * http://ff.asbjorn.it/ffcountdown.js * * The latest version of the orginal script can be found at: * http://www.infocraft.com/projects/ffcounter/ffcounter.js * * You may use this script in its entirety, modify it to suit your needs, * adapt its functions, or just use it for inspiration. However, some form * of acknowledgement, especially a link back to http://www.infocraft.com/, is * always appreciated. */ /*************************** Adjustable Parameters ***************************/ var ffcountdown_url = "http://ff.asbjorn.it/feed.xml"; // The URL of your counter mirror. var ffcountdown_timer_id = "ffcountdown"; // The id of the countdown element. var ffcountdown_countdown_dl_id = "ffcountdown_dl"; // The id of the countdown element. var ffcountdown_status_id = "countdownstatus"; // The id of the counter status element. var ffcountdown_counter_id = "ffcounter"; // The id of the counter element. var ffcountdown_goal_id = "ffcountdown_goal"; // The id of the counter element. var ffcountdown_current = 0; // for internal use var ffcountdown_request; /*************************** Public Functions ***************************/ // This should be called from your HTML, probably as an onload="get_count();" // event in your tag. function ffcountdown_init() { ffcountdown_load_xml(ffcountdown_url); } /*************************** Private Functions ***************************/ // Advances the status counter, indicating the length until the next increment. function ffcountdown_set_countdown(time, count, dps, offset, goal, lab) { var speed; var timer; var counter; var countdown_dl; timer = document.getElementById(ffcountdown_timer_id); if (timer) timer.firstChild.data = ffcountdown_format_time(time); counter = document.getElementById(ffcountdown_counter_id); if (counter) counter.firstChild.data = ffcountdown_format_count(count); countdown_dl = document.getElementById(ffcountdown_countdown_dl_id); if (countdown_dl) countdown_dl.firstChild.data = ffcountdown_format_count(goal-count); speed = 1000 / dps; offset += speed; if (offset > 1000) { time--; offset -= 1000; } count++; if (time > 0 && ffcountdown_current == lab) { setTimeout("ffcountdown_set_countdown(" + time + ", " + count + ", " + dps + ", " + offset + ", " + goal + ", "+lab+")", speed); } } // Adapted from the good people at ADC: // http://developer.apple.com/internet/webcontent/xmlhttpreq.html // this starts loading the XML data and sets up the process_request handler. function ffcountdown_load_xml(url) { var status_element = document.getElementById(ffcountdown_status_id); if (status_element) status_element.firstChild.data = "Sending Request"; // branch for native XMLHttpRequest object if (window.XMLHttpRequest) { ffcountdown_request = new XMLHttpRequest(); ffcountdown_request.onreadystatechange = ffcountdown_process_request; ffcountdown_request.open("GET", url, true); ffcountdown_request.send(null); // branch for IE/Windows ActiveX version } else if (window.ActiveXObject) { ffcountdown_request = new ActiveXObject("Microsoft.XMLHTTP"); if (ffcountdown_request) { ffcountdown_request.onreadystatechange = ffcountdown_process_request; ffcountdown_request.open("GET", url, true); ffcountdown_request.send(); setTimeout("ffcountdown_load_xml("+url+")",60000); } } } // This function is called once the request state changes. It pulls the // relevant data from the response and sends to update_count(). function ffcountdown_process_request() { var response; var timeleft; var dps; var count; var status; var goal; if (ffcountdown_request.readyState == 4) { status_element = document.getElementById(ffcountdown_status_id); if (status_element) { status = (ffcountdown_request.status == 200) ? "OK" : "Error"; status_element.firstChild.data = "Received: " + status; } if (ffcountdown_request.status == 200) { response = ffcountdown_request.responseXML; dps = response.getElementsByTagName('description')[2].firstChild.data; goal = response.getElementsByTagName('description')[3].firstChild.data; timeleft = response.getElementsByTagName('description')[4].firstChild.data; count = response.getElementsByTagName('description')[8].firstChild.data; var objgoal = document.getElementById(ffcountdown_goal_id); if (objgoal) objgoal.firstChild.data = ffcountdown_format_count(goal); ffcountdown_current++; ffcountdown_set_countdown(timeleft, count, dps, 0, goal, ffcountdown_current); } } } /*************************** Utility Functions ***************************/ // Formats a count for display by making it into a string and inserting commas. function ffcountdown_format_count(count) { count = count.toString(); for (var i = count.length - 3; i > 0 ; i -= 3) { count = count.slice(0, i) + ',' + count.slice(i, count.length); } return count; } // Formats a time for display. function ffcountdown_format_time(time) { var hour = Math.floor(time / 3600); var minutes = Math.floor((time - hour*3600)/60) ; var seconds = time - minutes * 60 - hour * 3600; if (minutes < 10) minutes = "0" + minutes ; if (seconds < 10) seconds = "0" + seconds; return hour + ":" + minutes + ":" + seconds; }