private void addGeoRssLayer(UrlChosenEventArgs e)
{
if (e.Url == null)
{
return;
}
Uri targetUri = null;
if (!Uri.TryCreate(e.Url, UriKind.Absolute, out targetUri))
{
return;
}
if (View.Instance != null)
{
CustomGeoRssLayer geoRssLayer = new CustomGeoRssLayer()
{
Source = targetUri,
ID = Guid.NewGuid().ToString("N"),
};
Core.LayerExtensions.SetDisplayUrl(geoRssLayer, e.Url);
geoRssLayer.SetValue(ESRI.ArcGIS.Client.Extensibility.MapApplication.LayerNameProperty, targetUri.Host);
geoRssLayer.MapSpatialReference = View.Instance.Map.SpatialReference;
geoRssLayer.UpdateCompleted += new EventHandler(applyAutomaticClustering);
View.Instance.Map.Layers.Add(geoRssLayer);
}
MapApplication.Current.HideWindow(enterUrlDialog);
OnUrlChosen(e);
}
void applyAutomaticClustering(object sender, EventArgs e)
{
CustomGeoRssLayer gLayer = sender as CustomGeoRssLayer;
if (gLayer != null && gLayer.Graphics.Count >= Constants.AutoClusterFeaturesThresholdLimit)
{
if (ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetGeometryType(gLayer) == GeometryType.Point && gLayer.Clusterer == null)
{
gLayer.Clusterer = new FlareClusterer();
}
}
if (gLayer != null)
{
gLayer.UpdateCompleted -= applyAutomaticClustering;
}
}
private bool IsLayerInitialized(Layer layer)
{
CustomGeoRssLayer geoRssLayer = layer as CustomGeoRssLayer;
if (geoRssLayer != null) // GeoRss layers use graphics layer member composition - hence we need a seperate init property
{
return(geoRssLayer.IsInitComplete);
}
GraphicsLayer gLayer = layer as GraphicsLayer;
if (gLayer != null)
{
return(gLayer.IsInitialized && gLayer.Graphics != null);
}
else
{
return(layer.IsInitialized);
}
}
