public ArcGISLocatorPlaceSearchProvider(Map map) : base()
{
if (map == null)
throw new ArgumentException();
_map = map;
_spatialRefWKID = _map.SpatialReference.WKID;
// Determine map units
_map.GetMapUnitsAsync(OnGetMapUnitsCompleted, OnGetMapUnitsFailed);
// Hook to property changed to detect a change in map units
_map.PropertyChanged += Map_PropertyChanged;
// Initialize commands
updateLocatorInfo = new DelegateCommand(doUpdateLocatorInfo, canUpdateLocatorInfo);
// Initialize views
ResultsView = new ArcGISLocatorResultsView();
InputView = new SingleLineSearchInputView();
_widthUnits = Utils.GetEnumDescriptions<LengthUnits>();
if (_widthUnits.ContainsKey(LengthUnits.UnitsDecimalDegrees))
_widthUnits.Remove(LengthUnits.UnitsDecimalDegrees);
Results = _results;
PagedResults = new PagedCollectionView(Results) { PageSize = _pageSize };
ExtentFields = new ExtentFields();
// Initialize geometry service and proxy URL with values from application environment if available
if (MapApplication.Current != null)
{
// Bind the geometry service's URL to the environment's by default
Binding b = new Binding("GeometryServiceUrl") { Source = MapApplication.Current.Urls };
BindingOperations.SetBinding(this, GeometryServiceUrlProperty, b);
}
// Initialize display name
Properties.SetDisplayName(this, this.GetDisplayNameFromAttribute());
// Listen for changes to the proxy URL
Properties.NotifyOnDependencyPropertyChanged("ProxyUrl", this, OnProxyUrlChanged);
}
/// <summary>
/// Initializes the search provider based on a configuration string
/// </summary>
public void LoadConfiguration(string configData)
{
// Store configuration string in case configuration needs to be reverted
_lastConfiguration = configData;
// Deserialize configuration
Dictionary<string, object> configSettings =
configData.DataContractDeserialize<Dictionary<string, object>>(knownSerializationTypes);
LocatorInfo = (LocatorService)configSettings["LocatorInfo"];
UseExtentFields = (bool)configSettings["UseExtentFields"];
if (UseExtentFields)
{
ExtentFields fields = (ExtentFields)configSettings["ExtentFields"];
// The extent fields must be the same field instances contained in the locator info's candidate
// fields collection. The deserialization creates new fields instances, so a lookup is required
// to initialize ExtentFields with the field instances from LocatorInfo.CandidateFields
ExtentFields = new ExtentFields();
ExtentFields.XMinField = findCandidateField(fields.XMinField);
ExtentFields.XMaxField = findCandidateField(fields.XMaxField);
ExtentFields.YMinField = findCandidateField(fields.YMinField);
ExtentFields.YMaxField = findCandidateField(fields.YMaxField);
}
else
{
ExtentWidth = (double)configSettings["ExtentWidth"];
}
WidthUnit = (LengthUnits)configSettings["WidthUnit"];
// Initialize locator task
if (_locator == null)
{
_locator = new Locator();
_locator.AddressToLocationsCompleted += AddressToLocationsCompleted;
_locator.Failed += Locator_Failed;
}
_locator.Url = LocatorServiceUrl = LocatorInfo.Url;
// Initialize proxy
UseProxy = (bool)configSettings["UseProxy"];
_locator.ProxyURL = UseProxy ? ProxyUrl : null;
}