protected override Task OnToolDeactivateAsync(bool hasMapViewChanged)
{
// if we have a valid view model
if (_attributeVM != null)
{
// free the embeddable control resources
_attributeVM.InspectorView = null;
_attributeVM.InspectorViewModel.Dispose();
}
_attributeVM = null;
return(base.OnToolDeactivateAsync(hasMapViewChanged));
}
protected override async Task OnToolActivateAsync(bool active)
{
// get the Precincts feature layer in the active map
_pointLayer = ActiveMapView.Map.GetLayersAsFlattenedList().OfType <FeatureLayer>().
Where(lyr => lyr.Name == "Police Stations").FirstOrDefault();
if (_pointLayer == null)
{
return;
}
// build the attribute dictionaries
_attributesValid = new Dictionary <string, bool>();
_attributes = new Dictionary <string, object>();
// get the embedded control
if (_attributeVM == null)
{
_attributeVM = this.EmbeddableControl as AttributeControlViewModel;
}
// these are the fields that we will collect values from the user
var fieldNames = new List <string>()
{
"Precinct", "Address"
};
// set up the inspector
var inspector = new Inspector();
foreach (var fieldName in fieldNames)
{
// add the attribute
ArcGIS.Desktop.Editing.Attributes.Attribute attr = await inspector.AddAttributeAsync(_pointLayer, fieldName, false);
// set the validity to true
_attributesValid.Add(fieldName, true);
// add some validation - in this example we will make each field mandatory
attr.AddValidate(() =>
{
var errors = new List <ArcGIS.Desktop.Editing.Attributes.Attribute.ValidationError>();
if (string.IsNullOrWhiteSpace(attr.CurrentValue.ToString()))
{
// add an error
errors.Add(ArcGIS.Desktop.Editing.Attributes.Attribute.ValidationError.Create("Value is mandatory", ArcGIS.Desktop.Editing.Attributes.Severity.High));
// set the validity to false
_attributesValid[fieldName] = false;
}
else
{
// store the value
if (!_attributes.ContainsKey(fieldName))
{
_attributes.Add(fieldName, attr.CurrentValue);
}
else
{
_attributes[fieldName] = attr.CurrentValue;
}
// set the validity to true
_attributesValid[fieldName] = true;
}
return(errors);
});
}
// create the embedded control and assign the view/viewmodel pair
var tuple = inspector.CreateEmbeddableControl();
_attributeVM.InspectorViewModel = tuple.Item1;
_attributeVM.InspectorView = tuple.Item2;
}
