function loadRoutes(xml) {
if (xml.length == 0) {
showMessage('There are no routes available to view.');
map.innerHTML = '';
}
else {
// create the first option of the dropdown box
var option = document.createElement('option');
option.setAttribute('value', '0');
option.innerHTML = 'Select Route...';
routeSelect.appendChild(option);
// iterate through the routes and load them into the dropdwon box.
$(xml).find('route').each(function(){
var option = document.createElement('option');
option.setAttribute('value', '?sessionID=' + $(this).attr('sessionID')
+ '&phoneNumber=' + $(this).attr('phoneNumber'));
var shortSessionID = $(this).attr('sessionID').substring(0,5);
option.innerHTML = $(this).attr('phoneNumber') + "-" + shortSessionID + " " + $(this).attr('times');
routeSelect.appendChild(option);
});
// need to reset this for firefox
routeSelect.selectedIndex = 0;
hideWait();
showMessage('<span style="color:#F00;">Please select a route below.</span>');
}
}
// this will get the map and route, the route is selected from the dropdown box
function getRouteForMap() {
if (hasMap()) {
showWait('Getting map...');
var url = 'getgpslocations.php' + routeSelect.options[routeSelect.selectedIndex].value;
//alert("testing route: " + routeSelect.options[routeSelect.selectedIndex].value);
$.ajax({
url: url,
type: 'GET',
dataType: 'xml',
success: function(data) {
loadGPSLocations(data);
}
});
}
else {
alert("Please select a route before trying to refresh map.");
}
}
// check to see if we have a map loaded, don't want to autorefresh or delete without it
function hasMap() {
if (routeSelect.selectedIndex == 0) { // means no map
return false;
}
else {
return true;
}
}
function loadGPSLocations(xml) {
if (xml.length == 0) {
showMessage('There is no tracking data to view.');
map.innerHTML = '';
}
else {
// get rid of the wait gif
hideWait();
var map = new google.maps.Map(
document.getElementById('map'), {
zoom: zoomLevel,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
// note: replace this adsense publisher ID and channel with your own.
var publisherID = 'pub-7095775186404141';
var channel = '6961715451';
var adUnitDiv = document.createElement('div');
var adUnitOptions = {
format: google.maps.adsense.AdFormat.HALF_BANNER,
position: google.maps.ControlPosition.TOP_CENTER,
backgroundColor: '#c4d4f3',
borderColor: '#e5ecf9',
titleColor: '#0000cc',
textColor: '#000000',
urlColor: '#009900',
publisherId: publisherID,
channelNumber: channel,
map: map,
visible: true
};
var adUnit = new google.maps.adsense.AdUnit(adUnitDiv, adUnitOptions);
var finalLocation = false;
// iterate through the locations and create map markers for each location
$(xml).find('locations').each(function(){
// want to set the map center on the last location
if ($(this).is(':last-child')) {
map.setCenter(new google.maps.LatLng($(this).attr('latitude'),$(this).attr('longitude')));
finalLocation = true;
}
var marker = createMarker(
$(this).attr('latitude'),
$(this).attr('longitude'),
$(this).attr('speed'),
$(this).attr('direction'),
$(this).attr('distance'),
$(this).attr('locationMethod'),
$(this).attr('gpsTime'),
$(this).attr('phoneNumber'),
$(this).attr('sessionID'),
$(this).attr('accuracy'),
$(this).attr('extraInfo'),
map, finalLocation);
});
}
// display route name above map
showMessage(routeSelect.options[routeSelect.selectedIndex].innerHTML);
}
function createMarker(latitude, longitude, speed, direction, distance, locationMethod, gpsTime,
phoneNumber, sessionID, accuracy, extraInfo, map, finalLocation) {
var iconUrl;
if (finalLocation) {
iconUrl = 'images/coolred_small.png';
} else {
iconUrl = 'images/coolblue_small.png';
}
var markerImage = {
url: iconUrl,
size: new google.maps.Size(12, 20),
origin: new google.maps.Point(0,0),
anchor: new google.maps.Point(6, 30)
};
var marker = new google.maps.Marker({
position: new google.maps.LatLng(latitude, longitude),
map: map,
icon: markerImage
});
var lastMarker = "</td></tr>";
// when a user clicks on last marker, let them know it's final one
if (finalLocation) {
lastMarker = "</td></tr><tr><td align=left> </td><td><b>Final location</b></td></tr>";
}
// convert from meters to feet
accuracy = parseInt(accuracy * 3.28);
var contentString = "<table border=0 style=\"font-size:95%;font-family:arial,helvetica,sans-serif;\">"
+ "<tr><td align=right> </td><td> </td><td rowspan=2 align=right>"
+ "<img src=images/" + getCompassImage(direction) + ".jpg alt= />" + lastMarker
+ "<tr><td align=right>Speed:</td><td>" + speed + " mph</td></tr>"
+ "<tr><td align=right>Distance:</td><td>" + distance + " mi</td><td> </td></tr>"
+ "<tr><td align=right>Time:</td><td colspan=2>" + gpsTime + "</td></tr>"
+ "<tr><td align=right>Method:</td><td>" + locationMethod + "</td><td> </td></tr>"
+ "<tr><td align=right>Phone #:</td><td>" + phoneNumber + "</td><td> </td></tr>"
+ "<tr><td align=right>Session ID:</td><td>" + sessionID + "</td><td> </td></tr>"
+ "<tr><td align=right>Accuracy:</td><td>" + accuracy + " ft</td><td> </td></tr>"
+ "<tr><td align=right>Extra Info:</td><td>" + extraInfo + "</td><td> </td></tr></table>";
var infowindow = new google.maps.InfoWindow({
content: contentString
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map, marker);
});
}
// this chooses the proper image for our litte compass in the popup window
function getCompassImage(azimuth) {
if ((azimuth >= 337 && azimuth <= 360) || (azimuth >= 0 && azimuth < 23))
return "compassN";
if (azimuth >= 23 && azimuth < 68)
return "compassNE";
if (azimuth >= 68 && azimuth < 113)
return "compassE";
if (azimuth >= 113 && azimuth < 158)
return "compassSE";
if (azimuth >= 158 && azimuth < 203)
return "compassS";
if (azimuth >= 203 && azimuth < 248)
return "compassSW";
if (azimuth >= 248 && azimuth < 293)
return "compassW";
if (azimuth >= 293 && azimuth < 337)
return "compassNW";
return "";
}
function deleteRoute() {
if (hasMap()) {
var answer = confirm("This will permanently delete this route\n from the database. Do you want to delete?")
if (answer){
showWait('Deleting route...');
var url = 'deleteroute.php' + routeSelect.options[routeSelect.selectedIndex].value;
$.ajax({
url: url,
type: 'GET',
success: function() {
deleteRouteResponse();
}
});
}
else {
return false;
}
}
else {
alert("Please select a route before trying to delete.");
}
}
function deleteRouteResponse() {
map.innerHTML = '';
routeSelect.length = 0;
$.ajax({
url: 'getroutes.php',
type: 'GET',
success: function(data) {
loadRoutes(data);
}
});
}
// auto refresh the map. there are 3 transitions (shown below). transitions happen when a user
// selects an option in the auto refresh dropdown box. an interval is an amount of time in between
// refreshes of the map. for instance, auto refresh once a minute. in the method below, the 3 numbers
// in the code show where the 3 transitions are handled. setInterval turns on a timer that calls
// the getRouteForMap() method every so many seconds based on the value of newInterval.
// clearInterval turns off the timer. if newInterval is 5, then the value passed to setInterval is
// 5000 milliseconds or 5 seconds.
function autoRefresh() {
/*
1) going from off to any interval
2) going from any interval to off
3) going from one interval to another
*/
if (hasMap()) {
newInterval = refreshSelect.options[refreshSelect.selectedIndex].value;
if (currentInterval > 0) { // currently running at an interval
if (newInterval > 0) { // moving to another interval (3)
clearInterval(intervalID);
intervalID = setInterval("getRouteForMap();", newInterval * 1000);
currentInterval = newInterval;
}
else { // we are turning off (2)
clearInterval(intervalID);
newInterval = 0;
currentInterval = 0;
}
}
else { // off and going to an interval (1)
intervalID = setInterval("getRouteForMap();", newInterval * 1000);
currentInterval = newInterval;
}
// show what auto refresh action was taken and after 5 seconds, display the route name again
showMessage(refreshSelect.options[refreshSelect.selectedIndex].innerHTML);
setTimeout('showRouteName();', 5000);
}
else {
alert("Please select a route before trying to refresh map.");
refreshSelect.selectedIndex = 0;
}
}
function changeZoomLevel() {
if (hasMap()) {
zoomLevel = zoomLevelSelect.selectedIndex + 1;
getRouteForMap();
// show what zoom level action was taken and after 5 seconds, display the route name again
showMessage(zoomLevelSelect.options[zoomLevelSelect.selectedIndex].innerHTML);
setTimeout('showRouteName();', 5000);
}
else {
alert("Please select a route before selecting zoom level.");
zoomLevelSelect.selectedIndex = zoomLevel - 1;
}
}
function showMessage(message) {
messages.innerHTML = 'GpsTracker: <strong>' + message + '</strong>';
}
function showRouteName() {
showMessage(routeSelect.options[routeSelect.selectedIndex].innerHTML);
}
function showWait(theMessage) {
map.innerHTML = '<img src="images/ajax-loader.gif" style="position:absolute;top:225px;left:325px;">';
showMessage(theMessage);
}
function hideWait() {
map.innerHTML = '';
messages.innerHTML = 'GpsTracker';
}
