/
placemap.js
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placemap.js
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var map;
var markersArray = [];
function isLoaded(map) {
return new Promise((resolve, reject) => {
google.maps.event.addListenerOnce(map, 'idle', () => {
resolve();
});
});
}
async function showPlaceMap() {
var size = getSize();
// get map data
var placeData = getPlaceData();
var xmlDoc = parseXml(placeData);
var points = xmlDoc.documentElement.getElementsByTagName("p");
// set map center and zoom level
var pointsBounds = new google.maps.LatLngBounds(new google.maps.LatLng(points[0].getAttribute("a"), points[0].getAttribute("o")),
new google.maps.LatLng(points[0].getAttribute("a"), points[0].getAttribute("o")));
for (var i = 1; i < points.length; i++) {
var ll = new google.maps.LatLng(points[i].getAttribute("a"), points[i].getAttribute("o"));
pointsBounds.extend(ll);
}
var margin = 0.3;
var ll = new google.maps.LatLng(pointsBounds.getSouthWest().lat(), pointsBounds.getSouthWest().lng() - margin);
pointsBounds.extend(ll);
var ll = new google.maps.LatLng(pointsBounds.getNorthEast().lat() + margin, pointsBounds.getNorthEast().lng() + margin);
pointsBounds.extend(ll);
var defaultZoom = 9;
var opts = {
zoomControl: true,
center: pointsBounds.getCenter(),
zoom: defaultZoom,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
if (size === 1) {
opts.mapTypeControl = true;
opts.overviewMapControl = true;
}
else {
opts.controlSize = 16;
}
map = new google.maps.Map(document.getElementById("placemap"), opts);
await isLoaded(map);
for (var i = defaultZoom-1; i >= 0; i--) {
var bounds = map.getBounds();
if (bounds.contains(pointsBounds.getNorthEast()) && bounds.contains(pointsBounds.getSouthWest())) {
break;
}
console.log('setZoom', i);
map.setZoom(i);
}
if (size == 1) {
google.maps.event.addListener(map, 'click', function(overlay, point) {
if (point || (overlay && (overlay instanceof google.maps.Marker))) {
var lat;
var lng;
if (point) {
lat = point.y;
lng = point.x;
}
else {
lat = overlay.getLatLng().lat();
lng = overlay.getLatLng().lng();
}
document.getElementById("latbox").innerHTML=Math.round(lat*1000000)/1000000;
document.getElementById("lngbox").innerHTML=Math.round(lng*1000000)/1000000;
document.getElementById("latlnginst").style.display='none';
document.getElementById("latlngbox").style.display='block';
}
});
}
addMapOverlays(size, points);
}
function parseXml(str) {
if (window.ActiveXObject) {
var doc = new ActiveXObject('Microsoft.XMLDOM');
doc.loadXML(str);
return doc;
} else if (window.DOMParser) {
return (new DOMParser).parseFromString(str, 'text/xml');
}
}
function clearOverlays() {
for (var i = 0; i < markersArray.length; i++ ) {
markersArray[i].setMap(null);
}
markersArray.length = 0;
}
function addMapOverlays(size, points) {
clearOverlays();
var infoWindow = new google.maps.InfoWindow();
for (var i = 0; i < points.length; i++) {
var point = points[i];
var lat = parseFloat(point.getAttribute("a"));
var coords;
if (lat >= 0) {
coords = lat + '°N ';
}
else {
coords = (lat * -1.0) + '°S ';
}
var lng = parseFloat(point.getAttribute("o"));
if (lng >= 0) {
coords = coords + lng + '°E';
}
else {
coords = coords + (lng * -1.0) + '°W';
}
var latlng = new google.maps.LatLng(lat, lng);
var type = point.getAttribute("t");
var name = point.getAttribute("n");
var url = point.getAttribute("u");
var html = '<center><b><a href="' + url + '">' + name + '</a></b></center><br>' +
'<b>Type:</b> ' + type + '<br><b>Coordinates:</b> ' + coords;
var icon = createIcon(size);
var marker = createMarker(map, html, name, latlng, icon, size);
markersArray.push(marker);
//map.addOverlay(marker);
}
function createMarker(map, html, name, latlng, icon, size) {
var marker = new google.maps.Marker({
icon: icon,
position: latlng,
clickable: size === 1,
title: name,
map: map
});
if (size == 1) {
html = '<div style="width:300px;">' + html + '</div>';
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
return marker;
}
function createIcon(size) {
var icon;
if (size == 1) {
// icon.iconSize = new google.maps.Size(20, 34);
// icon.shadowSize = new google.maps.Size(37,34);
// icon.iconAnchor = new google.maps.Point(9,34);
// icon.infoWindowAnchor = new google.maps.Point(9, 2);
// icon.infoShadowAnchor = new google.maps.Point(18,25);
// icon.shadow = "/w/skins/common/images/maps/shadow.png";
//// icon.transparent = "/w/skins/common/images/maps/lolly/transp.png";
// icon.image = "/w/skins/common/images/maps/marker.png";
// icon.printImage = "/w/skins/common/images/maps/marker.gif";
// icon.mozPrintImage = "/w/skins/common/images/maps/marker.gif";
icon = "/w/skins/common/images/maps/marker.png";
}
else {
// icon.iconSize = new google.maps.Size(12, 20);
// icon.shadowSize = new google.maps.Size(22, 20);
// icon.iconAnchor = new google.maps.Point(6, 20);
// icon.infoWindowAnchor = new google.maps.Point(5, 1);
// icon.infoShadowAnchor = new google.maps.Point(9, 12);
// icon.shadow = "/w/skins/common/images/maps/mm_20_shadow.png";
//// icon.transparent = "/w/skins/common/images/maps/lolly/transp.png";
// icon.image = "/w/skins/common/images/maps/mm_20_red.png";
// icon.printImage = "/w/skins/common/images/maps/mm_20_red.gif";
// icon.mozPrintImage = "/w/skins/common/images/maps/mm_20_red.gif";
icon = "/w/skins/common/images/maps/mm_20_red.png";
}
return icon;
}
}