/* * sensors.js - update sensors on Legoguy's robot page. Thanks to infocraft * for the Firefox counter script that this was adapted from. * * 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. */ var counter_url = "sensors.xml"; // The URL of your counter mirror. var status_id = "status"; var nearest_id = "nearest"; var distance_id = "distance"; var light_id = "light"; var voltage_id = "voltage"; var viewers_id = "viewers"; var requests_id = "commands"; var update_status_id = "update_status"; var update_tick_id = "update_tick"; var request = null; var counter_on = true; /* This should be called from your HTML, probably as an onload="get_count();" * event in your tag. */ function get_count() { var delay = 10000; if(update) load_xml(counter_url); setTimeout("get_count()", delay); if (document.getElementById(update_tick_id)) { set_status(Math.round(delay / 1000)); } } /* Advances the status counter, indicating the length until the next increment. */ function set_status(time) { var timer = document.getElementById(update_tick_id); timer.firstChild.data = time; time--; if (time > 0) { setTimeout("set_status(" + time + ")", 1000); } } /* 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 load_xml(url) { set_element(update_status_id, "Send"); /* branch for native XMLHttpRequest object */ if (window.XMLHttpRequest) { request = new XMLHttpRequest(); request.onreadystatechange = process_request; request.open("GET", url, true); request.send(null); /* branch for IE/Windows ActiveX version */ } else if (window.ActiveXObject) { request = new ActiveXObject("Microsoft.XMLHTTP"); if (request) { request.onreadystatechange = process_request; request.open("GET", url, true); request.send(); } } } /* This function is called once the request state changes. It pulls the * relevant data from the response and sends to update_count(). */ function process_request() { var response; var status; var status_style; set_element(update_status_id, request.readyState); if (request.readyState == 4) { if (request.status == 200) { response = request.responseXML; netxt = response.getElementsByTagName('netxt')[0]; for(i = 0; i < netxt.childNodes.length; i++) { //try{p.r.i.n.t}catch(e){debug('process_request: setting value for '+ws2300.childNodes[i].nodeName, '', e.lineNumber)}; if(element = document.getElementById(netxt.childNodes[i].nodeName)) document.getElementById(netxt.childNodes[i].nodeName).firstChild.data = netxt.childNodes[i].firstChild.data; } status = netxt.getElementsByTagName('status')[0].firstChild.data; if(status == 'Online' || status == 'Locked' || status == 'Single Mode' ){ control = (status == 'Online' || status == 'Single Mode' ? true : false); status_style = (status == 'Locked'? '#ffa500' : 'limegreen'); status_style = (status == 'Single Mode'? 'yellow' : status_style); set_element_color(status_id, status_style); var voltage_tmp; var voltage_color = '#000000'; voltage_tmp = netxt.getElementsByTagName('voltage')[0].firstChild.data.replace(/mV/, ''); if (voltage_tmp >= 9000) voltage_color = '#00ff00' else if (voltage_tmp >= 8750) voltage_color = '#15ff00' else if (voltage_tmp >= 8500) voltage_color = '#2aff00' else if (voltage_tmp >= 8250) voltage_color = '#40ff00' else if (voltage_tmp >= 8000) voltage_color = '#55ff00' else if (voltage_tmp >= 7750) voltage_color = '#6aff00' else if (voltage_tmp >= 7500) voltage_color = '#80ff00' else if (voltage_tmp >= 7250) voltage_color = '#95ff00' else if (voltage_tmp >= 7000) voltage_color = '#aaff00' else if (voltage_tmp >= 6750) voltage_color = '#bfff00' else if (voltage_tmp >= 6500) voltage_color = '#d4ff00' else if (voltage_tmp >= 6250) voltage_color = '#eaff00' else if (voltage_tmp >= 6000) voltage_color = '#ffff00' else if (voltage_tmp >= 5750) voltage_color = '#ffea00' else if (voltage_tmp >= 5500) voltage_color = '#ffd500' else if (voltage_tmp >= 5250) voltage_color = '#ffbf00' else if (voltage_tmp >= 5000) voltage_color = '#ffaa00' else if (voltage_tmp >= 4750) voltage_color = '#ff9500' else if (voltage_tmp >= 4500) voltage_color = '#ff8000' else if (voltage_tmp >= 4250) voltage_color = '#ff6a00' else if (voltage_tmp >= 4000) voltage_color = '#ff5500' else if (voltage_tmp >= 3750) voltage_color = '#ff4000' else if (voltage_tmp >= 3500) voltage_color = '#ff2a00' else if (voltage_tmp >= 3250) voltage_color = '#ff1500' else if (voltage_tmp >= 3000) voltage_color = '#ff0000'; set_element_color(voltage_id, voltage_color); } else { control = false; set_element_color(status_id, "red"); set_element(nearest_id, '---'); set_element(distance_id, '---'); set_element(light_id, '---'); set_element(voltage_id, '---'); set_element_color('#000000'); set_element(viewers_id, '---'); set_element(requests_id, '---'); } /* alert(status + " " + distance + " " + light + " " + voltage); */ } else { alert("Error: " + request.statusText()); } set_element(update_status_id, (request.statusText ? request.statusText : request.status)); request = null; } } /* Sets an HTML element with element_id to the given content. */ function set_element(element_id, content) { var element; if (element = document.getElementById(element_id)) element.firstChild.data = content; } function set_element_color(element_id, color) { var element; if (element = document.getElementById(element_id)) { element.style.color = color; //alert(element.style.color + element.style.fontWeight); } }