Here is a solution for filtering stores by state. You will need to implement language or other filtering options but the general structure is there. The basic idea is that you keep all your store data in an array and simply set markers map to null if they do not meet filtering criteria. I used text matching for state name - if you want to be really fancy you can implement a check if a click happened in polygon boundaries instead.
I used jQuery to load and process the state xml data (as well as display the store list), so you will need to make sure that you have data stored on the same server as your script.
<html>
<head>
<script type="text/javascript" src= "http://maps.google.com/maps/api/js?sensor=false">
</script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript">
</script>
<script>
var map;
var stores;
var options = {
currState: ""
}
//sample stores data - marker Obj will store reference to marker object on the map for that store
stores = [{
"name": "store1",
"lat": "37.9069",
"lng": "-122.0792",
"state": "California",
"languages": ["Spanish", "English"],
"markerObj": ""
}, {
"name": "store2",
"lat": "37.7703",
"lng": "-122.4212",
"state": "California",
"languages": ["English"],
"markerObj": ""
}, {
"name": "store3",
"lat": "39.251",
"lng": "-105.0051",
"state": "Colorado",
"markerObj": ""
}]
function init(){
var latlng = new google.maps.LatLng(37.9069, -122.0792);
var myOptions = {
zoom: 4,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map"), myOptions);
showStates();
showStores();
}
function showStates(){
//load the XML for state boundaries and attach events
$.get("states.xml", function(data){
$(data).find("state").each(function(){
coord = [];
state = $(this).attr("name");
stateCol = $(this).attr("colour");
$(this).find("point").each(function(){
lat = $(this).attr("lat")
lng = $(this).attr("lng")
coord.push(new google.maps.LatLng(lat, lng));
})
//draw state poly
statePoly = new google.maps.Polygon({
paths: coord,
strokeColor: "#000000",
strokeOpacity: 0.8,
strokeWeight: 1,
fillColor: stateCol,
fillOpacity: 0.5
});
statePoly.setMap(map);
//attach click events to a poly
addListeners(state, statePoly, coord);
//attach click events to poly
})
})
}
function addListeners(state, poly, coord){
google.maps.event.addListener(poly, 'click', function(){
//zoom in to state level
bounds = new google.maps.LatLngBounds();
for (i = 0; i < coord.length; i++) {
bounds.extend(coord[i])
}
map.fitBounds(bounds);
//do store display and filtering
filterStoresByState(state);
});
}
function showStores(){
for (i = 0; i < stores.length; i++) {
var myLatlng = new google.maps.LatLng(stores[i].lat, stores[i].lng);
marker = new google.maps.Marker({
position: myLatlng,
map: map
});
//store the marker object for later use
stores[i].markerObj = marker;
//generate a list of stores
$(".stores").append("<li>" + stores[i].name + "-" + stores[i].state + "</li>")
}
}
//do the filtering - you will need to expand this if you want add additional filtering options
function filterStoresByState(state){
$(".stores").html("");
for (i = 0; i < stores.length; i++) {
if (stores[i].state != state) {
(stores[i].markerObj).setMap(null);
}
else {
(stores[i].markerObj).setMap(map)
$(".stores").append("<li>" + stores[i].name + "-" + stores[i].state + "</li>")
}
}
}
</script>
</head>
<body onload="init()">
<div id="map" style="width: 600px;height: 400px;">
</div>
<div>
<ul class="stores">
</ul>
</div>
</body>
Michal
2010-10-13 22:52:16