//Create a CIMSymbol from style item selected in the results gallery list box and
//apply this newly created symbol to the feature layer currently selected in Contents pane
private async void ApplyTheSelectedSymbol(SymbolStyleItem selectedStyleItemToApply)
{
if (selectedStyleItemToApply == null || string.IsNullOrEmpty(selectedStyleItemToApply.Key))
{
return;
}
await QueuedTask.Run(() =>
{
//Get the feature layer currently selected in the Contents pane
var selectedLayers = MapView.Active.GetSelectedLayers();
//Only one feature layer should be selected in the Contents pane
if (selectedLayers.Count != 1)
{
ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Select the feature layer to which you want to apply the selected symbol. Only one feature layer should be selected.");
//Clear the current selection in gallery
_selectedStyleItem = null;
NotifyPropertyChanged(() => SelectedStyleItem);
return;
}
FeatureLayer ftrLayer = selectedLayers[0] as FeatureLayer;
//The selected layer should be a feature layer
if (ftrLayer == null)
{
return;
}
//Get symbol from symbol style item.
CIMSymbol symbolFromStyleItem = selectedStyleItemToApply.Symbol;
//Make sure there isn't a mismatch between the type of selected symbol in gallery and feature layer geometry type
if ((symbolFromStyleItem is CIMPointSymbol && ftrLayer.ShapeType != esriGeometryType.esriGeometryPoint) ||
(symbolFromStyleItem is CIMLineSymbol && ftrLayer.ShapeType != esriGeometryType.esriGeometryPolyline) ||
(symbolFromStyleItem is CIMPolygonSymbol && ftrLayer.ShapeType != esriGeometryType.esriGeometryPolygon && ftrLayer.ShapeType != esriGeometryType.esriGeometryMultiPatch))
{
ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("There is a mismatch between symbol type and feature layer geometry type.");
//Clear the current selection in gallery
_selectedStyleItem = null;
NotifyPropertyChanged(() => SelectedStyleItem);
return;
}
//Get simple renderer from feature layer
CIMSimpleRenderer currentRenderer = ftrLayer.GetRenderer() as CIMSimpleRenderer;
if (currentRenderer == null)
{
ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Select a feature layer symbolized with a simple renderer.");
//Clear the current selection in gallery
_selectedStyleItem = null;
NotifyPropertyChanged(() => SelectedStyleItem);
return;
}
//Set real world setting for created symbol = feature layer's setting
//so that there isn't a mismatch between symbol and feature layer
SymbolFactory.SetRealWorldUnits(symbolFromStyleItem, ftrLayer.UsesRealWorldSymbolSizes);
//Set current renderer's symbol reference = symbol reference of the newly created symbol
currentRenderer.Symbol = SymbolFactory.MakeSymbolReference(symbolFromStyleItem);
//Update feature layer renderer with new symbol
ftrLayer.SetRenderer(currentRenderer);
});
}
