//
//
function CreateMarker(point,html) {
var marker = new GMarker(point);
GEvent.addListener(marker, "click", function() {
marker.openInfoWindowHtml(html);
});
return marker;
}
// A TextualZoomControl is a GControl that displays textual "Zoom In"
// and "Zoom Out" buttons (as opposed to the iconic buttons used in
// Google Maps).
function TextualZoomControl() {
}
TextualZoomControl.prototype = new GControl();
// Creates a one DIV for each of the buttons and places them in a container
// DIV which is returned as our control element. We add the control to
// to the map container and return the element for the map class to
// position properly.
TextualZoomControl.prototype.initialize = function(map) {
var container = document.createElement("div");
var zoomInDiv = document.createElement("div");
this.setButtonStyle_(zoomInDiv);
container.appendChild(zoomInDiv);
zoomInDiv.appendChild(document.createTextNode("Aggiorna"));
GEvent.addDomListener(zoomInDiv, "click", function() {
GDownloadUrl("data.php?"+(new Date()).getTime(), function(data, responseCode) {
// To ensure against HTTP errors that result in null or bad data,
// always check status code is equal to 200 before processing the data
if (responseCode == 200) {
map.clearOverlays();
var xml = GXml.parse(data);
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var lat = parseFloat(markers[i].getAttribute("lat"));
var lon = parseFloat(markers[i].getAttribute("lng"));
var userid = markers[i].getAttribute("userid");
var html = "ID : "+userid+"
LAT : "+lat+"
LON : "+lon;
var marker = CreateMarker(point, html);
map.addOverlay(marker);
}
} else if(responseCode == -1) {
alert("Data request timed out. Please try later.");
} else {
alert("Request resulted in error. Check XML file is retrievable.");
}
});
});
map.getContainer().appendChild(container);
return container;
}
// By default, the control will appear in the top left corner of the
// map with 7 pixels of padding.
TextualZoomControl.prototype.getDefaultPosition = function() {
return new GControlPosition(G_ANCHOR_BOTTOM_LEFT, new GSize(7, 7));
}
// Sets the proper CSS for the given button element.
TextualZoomControl.prototype.setButtonStyle_ = function(button) {
button.style.textDecoration = "underline";
button.style.color = "#0000cc";
button.style.backgroundColor = "white";
button.style.font = "small Arial";
button.style.border = "1px solid black";
button.style.padding = "2px";
button.style.marginBottom = "3px";
button.style.textAlign = "center";
button.style.width = "10em";
button.style.cursor = "pointer";
}
function load() {
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById("map"));
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
map.setCenter(new GLatLng(43.608, 13.9662), 9);
map.addControl(new TextualZoomControl());
map.enableScrollWheelZoom();
// Download the data in data.xml and load it on the map. The format we
// expect is:
//
//
//
//
GDownloadUrl("data.php?"+(new Date()).getTime(), function(data, responseCode) {
// To ensure against HTTP errors that result in null or bad data,
// always check status code is equal to 200 before processing the data
if (responseCode == 200) {
map.clearOverlays();
var xml = GXml.parse(data);
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var lat = parseFloat(markers[i].getAttribute("lat"));
var lon = parseFloat(markers[i].getAttribute("lng"));
var userid = markers[i].getAttribute("userid");
var html = "ID : "+userid+"
LAT : "+lat+"
LON : "+lon;
var marker = CreateMarker(point, html);
map.addOverlay(marker);
}
} else if(responseCode == -1) {
alert("Data request timed out. Please try later.");
} else {
alert("Request resulted in error. Check XML file is retrievable.");
}
});
}
}