134 lines
3.4 KiB
JavaScript
134 lines
3.4 KiB
JavaScript
//Called as the user scrolls/zooms around.
|
|
//Maniplate hrefs of the view tab and various other links
|
|
function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat) {
|
|
var decimals = Math.pow(10, Math.floor(zoom/3));
|
|
var node;
|
|
|
|
lat = Math.round(lat * decimals) / decimals;
|
|
lon = Math.round(lon * decimals) / decimals;
|
|
|
|
node = document.getElementById("permalinkanchor");
|
|
if (node) {
|
|
var args = getArgs(node.href);
|
|
args["lat"] = lat;
|
|
args["lon"] = lon;
|
|
args["zoom"] = zoom;
|
|
if (layers) {
|
|
args["layers"] = layers;
|
|
}
|
|
node.href = setArgs(node.href, args);
|
|
}
|
|
|
|
node = document.getElementById("viewanchor");
|
|
if (node) {
|
|
var args = getArgs(node.href);
|
|
args["lat"] = lat;
|
|
args["lon"] = lon;
|
|
args["zoom"] = zoom;
|
|
if (layers) {
|
|
args["layers"] = layers;
|
|
}
|
|
node.href = setArgs(node.href, args);
|
|
}
|
|
|
|
node = document.getElementById("exportanchor");
|
|
if (node) {
|
|
var args = getArgs(node.href);
|
|
args["lat"] = lat;
|
|
args["lon"] = lon;
|
|
args["zoom"] = zoom;
|
|
if (layers) {
|
|
args["layers"] = layers;
|
|
}
|
|
node.href = setArgs(node.href, args);
|
|
}
|
|
|
|
node = document.getElementById("editanchor");
|
|
if (node) {
|
|
if (zoom >= 11) {
|
|
var args = new Object();
|
|
args.lat = lat;
|
|
args.lon = lon;
|
|
args.zoom = zoom;
|
|
node.href = setArgs("/edit", args);
|
|
node.style.fontStyle = 'normal';
|
|
} else {
|
|
node.href = 'javascript:alert("zoom in to edit map");';
|
|
node.style.fontStyle = 'italic';
|
|
}
|
|
}
|
|
|
|
node = document.getElementById("historyanchor");
|
|
if (node) {
|
|
if (zoom >= 11) {
|
|
var args = new Object();
|
|
//set bbox param from 'extents' object
|
|
if (typeof minlon == "number" &&
|
|
typeof minlat == "number" &&
|
|
typeof maxlon == "number" &&
|
|
typeof maxlat == "number") {
|
|
|
|
minlon = Math.round(minlon * decimals) / decimals;
|
|
minlat = Math.round(minlat * decimals) / decimals;
|
|
maxlon = Math.round(maxlon * decimals) / decimals;
|
|
maxlat = Math.round(maxlat * decimals) / decimals;
|
|
args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
|
|
}
|
|
|
|
node.href = setArgs("/history", args);
|
|
node.style.fontStyle = 'normal';
|
|
} else {
|
|
node.href = 'javascript:alert("zoom in to see editing history");';
|
|
node.style.fontStyle = 'italic';
|
|
}
|
|
}
|
|
}
|
|
|
|
function getArgs(url) {
|
|
var args = new Object();
|
|
var querystart = url.indexOf("?");
|
|
|
|
if (querystart >= 0) {
|
|
var querystring = url.substring(querystart + 1);
|
|
var queryitems = querystring.split("&");
|
|
|
|
for (var i = 0; i < queryitems.length; i++) {
|
|
if (match = queryitems[i].match(/^(.*)=(.*)$/)) {
|
|
args[unescape(match[1])] = unescape(match[2]);
|
|
} else {
|
|
args[unescape(queryitems[i])] = null
|
|
}
|
|
}
|
|
}
|
|
|
|
return args;
|
|
}
|
|
|
|
function setArgs(url, args) {
|
|
var queryitems = new Array();
|
|
|
|
for (arg in args)
|
|
{
|
|
if (args[arg] == null) {
|
|
queryitems.push(escape(arg));
|
|
} else {
|
|
queryitems.push(escape(arg) + "=" + escape(args[arg]));
|
|
}
|
|
}
|
|
|
|
return url.replace(/\?.*$/, "") + "?" + queryitems.join("&");
|
|
}
|
|
|
|
function getStyle(el, property) {
|
|
var style;
|
|
|
|
if (el.currentStyle) {
|
|
style = el.currentStyle[property];
|
|
} else if( window.getComputedStyle ) {
|
|
style = document.defaultView.getComputedStyle(el,null).getPropertyValue(property);
|
|
} else {
|
|
style = el.style[property];
|
|
}
|
|
|
|
return style;
|
|
}
|