/// <summary>
/// Zoom map to a feature layer's extent. If its SR is different than the base map's, re-project the extent
/// </summary>
private void MenuItemZoomTo_Click(object sender, MenuItemClickEventArgs e)
{
HideConextMenu();
if (e.ItemTag is LivingMapLayer)
{
LivingMapLayer mapConfig = e.ItemTag as LivingMapLayer;
Envelope extent = this.MapControl.Layers[mapConfig.ID].FullExtent;
if (!SpatialReference.AreEqual(extent.SpatialReference, this.MapControl.SpatialReference, false))
{
GeometryTool.ProjectEnvelope(this.AppConfig.GeometryService, extent, this.MapSRWKID, (s, g) =>
{
if (g.ProjectedGeometry != null)
{
this.MapControl.ZoomTo(g.ProjectedGeometry);
}
});
}
else
{
this.MapControl.ZoomTo(extent);
}
}
else if (e.ItemTag is TOCNodeInfo)
{
TOCNodeInfo nodeInfo = e.ItemTag as TOCNodeInfo;
if (nodeInfo.LayerExtent == null)
{
this.IsBusy = true;
Layer layer = this.MapControl.Layers[nodeInfo.MapID];
string layerUrl = (nodeInfo.IsTiledMap) ? (layer as ArcGISTiledMapServiceLayer).Url : (layer as ArcGISDynamicMapServiceLayer).Url;
ArcGISLayerInfoReader layerInfoReader = new ArcGISLayerInfoReader(layerUrl + "/" + nodeInfo.LayerID);
layerInfoReader.InfoReady += (obj, arg) =>
{
if (!SpatialReference.AreEqual(arg.LayerInfo.Extent.SpatialReference, this.MapControl.SpatialReference, false))
{
GeometryTool.ProjectEnvelope(this.AppConfig.GeometryService, arg.LayerInfo.Extent, this.MapSRWKID, (s, g) =>
{
this.IsBusy = false;
if (g.ProjectedGeometry != null)
{
nodeInfo.LayerExtent = g.ProjectedGeometry as Envelope;
this.MapControl.ZoomTo(nodeInfo.LayerExtent);
}
});
}
else
{
this.IsBusy = false;
nodeInfo.LayerExtent = nodeInfo.LayerExtent = arg.LayerInfo.Extent;
this.MapControl.ZoomTo(nodeInfo.LayerExtent);
}
};
}
else
{
this.MapControl.ZoomTo(nodeInfo.LayerExtent);
}
}
}
/// <summary>
/// Toggle the visibility of a feature layer in an ArcGIS Dynamic Map Service Layer
/// </summary>
private void OnToggleFeatureLayer(object sender, RoutedEventArgs e)
{
HideConextMenu();
TOCNodeInfo nodeInfo = null;
TreeViewItem treeNode = null;
if (sender is CheckBox)
{
CheckBox checkBox = sender as CheckBox;
treeNode = checkBox.Tag as TreeViewItem;
nodeInfo = treeNode.Tag as TOCNodeInfo;
}
else if (sender is RadioButton)
{
RadioButton radioBox = sender as RadioButton;
treeNode = radioBox.Tag as TreeViewItem;
nodeInfo = treeNode.Tag as TOCNodeInfo;
}
if (treeNode != null && nodeInfo != null)
{
TreeViewItem mapNode = GetMapLayerNode(treeNode);
ArcGISDynamicMapServiceLayer dynamicLayer = this.MapControl.Layers[nodeInfo.MapID] as ArcGISDynamicMapServiceLayer;
int[] oldVisibles = (int[])dynamicLayer.VisibleLayers.Clone();
List <int> visLayers = new List <int>();
GetVisibleLayerIDs(mapNode, visLayers);
dynamicLayer.VisibleLayers = visLayers.ToArray();
EventCenter.DispatchMapLayerVisibilityChangeEvent(this, new MapLayerVisibilityChangeEventArgs(dynamicLayer, oldVisibles));
}
}
/// <summary>
/// Get Visible Layer IDs in a Dynamic Map Service
/// </summary>
private void GetVisibleLayerIDs(TreeViewItem layerNode, List <int> visLayers)
{
if (layerNode.HasItems)
{
foreach (object item in layerNode.Items)
{
if (item is TreeViewItem)
{
TreeViewItem treeItem = item as TreeViewItem;
TOCNodeInfo nodeInfo = treeItem.Tag as TOCNodeInfo;
if (treeItem.Header is CheckBox)
{
CheckBox checkBox = treeItem.Header as CheckBox;
if (checkBox.IsChecked.Value && checkBox.Tag is TreeViewItem)
{
if (nodeInfo.IsGroupLayer) // Get SubLayers' Visibilities
{
GetVisibleLayerIDs(checkBox.Tag as TreeViewItem, visLayers);
}
else
{
visLayers.Add(nodeInfo.LayerID);
}
}
}
else if (treeItem.Header is RadioButton)
{
RadioButton radioBox = treeItem.Header as RadioButton;
if (radioBox.IsChecked.Value && radioBox.Tag is TreeViewItem)
{
if (nodeInfo.IsGroupLayer) // Get SubLayers' Visibilities
{
GetVisibleLayerIDs(radioBox.Tag as TreeViewItem, visLayers);
}
else
{
visLayers.Add(nodeInfo.LayerID);
}
}
}
}
}
}
}