protected override void MapUriRequested(HttpMapTileDataSource sender, MapTileUriRequestedEventArgs args)
{
var deferral = args.Request.GetDeferral();
if (!(args.ZoomLevel < 4 && Epsg == 4326))
{
var extent = GetTileExtent(args.X, args.Y, args.ZoomLevel);
var urlTemplate = string.Concat(ServiceUrl,
ServiceUrl.EndsWith("?")
? string.Empty
: ServiceUrl.EndsWith("&") ? string.Empty : (ServiceUrl.Contains("?") ? "&" : "?"), WmsPostFix);
var url = string.Format(CultureInfo.InvariantCulture,
urlTemplate, extent.XLow, extent.YLow, extent.XHigh, extent.YHigh, TileSize, Epsg,
string.Join(",", Layers),
Version, ReferenceSystemName, ImageType);
#if DEBUG
Debug.WriteLine("Tile x={0}, y={1}, zoom={2}", args.X, args.Y, args.ZoomLevel);
Debug.WriteLine("adding uri {0}", url);
#endif
args.Request.Uri = new Uri(url);
}
deferral.Complete();
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
if (StopProcessing || String.IsNullOrEmpty(ServiceUrl))
{
// Do nothing
StopProcessing = true;
}
else if (!RequestHelper.IsPostBack())
{
// This message is hidden by javascript as soon as possible
ShowWarning(ResHelper.GetString("webservices.checker.initialmessage"), null, null);
// Request javascript proxy directly to avoid logon screen redirection
string url = URLHelper.GetAbsoluteUrl(ServiceUrl.EndsWith("/js") ? ServiceUrl : ServiceUrl.TrimEnd('/') + "/js");
// Prepare the script
StringBuilder actionScript = new StringBuilder();
actionScript.Append(@"
function CheckService(){
var xmlHttp = new XMLHttpRequest();
xmlHttp.open('GET', ", ScriptHelper.GetString(url), @", false);
xmlHttp.send();
return xmlHttp.status;
}
function CheckFailed(label, message, status){
if (", (OnCheckFailed != null).ToString().ToLowerCSafe(), @") {
", ControlsHelper.GetPostBackEventReference(this, "##PARAM##").Replace("'##PARAM##'", "status"), @";
} else if ((label != null) && (label.length > 0)) {
label.empty();
label.append(message);
label.show();
}
}
function PerformServiceCheck(){
var label = $j('#", MessagesPlaceHolder.ClientID, ClientIDSeparator, MessagesPlaceHolder.WarningLabel.ID, @"');
label.hide();
var status = CheckService();
switch (status) {
case 404:
CheckFailed(label, ", ScriptHelper.GetString(NotFoundText), @", status);
break;
case 401:
CheckFailed(label, ", ScriptHelper.GetString(NotAuthorizedText), @", status);
break;
case 403:
CheckFailed(label, ", ScriptHelper.GetString(DisabledText), @", status);
break;
case 500:
CheckFailed(label, ", ScriptHelper.GetString(ServerErrorText), @", status);
break;
default:
if (", MessagesPlaceHolder.UseRelativePlaceHolder.ToString().ToLowerCSafe(), @") {
label.parent().hide();
}
}
}");
ScriptHelper.RegisterJQuery(Page);
ScriptHelper.RegisterClientScriptBlock(Page, typeof(string), "WebServiceChecker_" + ClientID, ScriptHelper.GetScript(actionScript.ToString()));
ScriptHelper.RegisterStartupScript(Page, typeof(string), "PerformServiceCheck_" + ClientID, "PerformServiceCheck();", true);
}
}