/// <summary>
/// Handles the ProportyChanged event of map pin.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">A <see cref="EventArgs"/> with arguments of the event.</param>
private void OnPinPropertyChanged(object sender, PropertyChangedEventArgs e)
{
// Get the pin and corresponding marker
var pin = (MapExPin)sender;
var marker = this.markers?.FirstOrDefault(m => m.Id.Equals((string)pin.InternalId));
if (marker == null)
{
// Remove event handler
pin.PropertyChanged -= this.OnPinPropertyChanged;
return;
}
// If pin label changed
if (e.PropertyName == MapExPin.LabelProperty.PropertyName)
{
marker.Title = pin.Label;
}
// If the address property changed
if (e.PropertyName == MapExPin.AddressProperty.PropertyName)
{
marker.Snippet = pin.Address;
}
// If the position changed
if (e.PropertyName == MapExPin.PositionProperty.PropertyName)
{
marker.Position = new LatLng(pin.Position.Latitude, pin.Position.Longitude);
}
// If the type changed
if (e.PropertyName == MapExPin.TypeProperty.PropertyName)
{
// Change the marker icon
var icon = MapExRenderer.GetResourceId(pin.Type);
marker.SetIcon(BitmapDescriptorFactory.FromResource(icon));
// If the marker info window is shown
if (marker.IsInfoWindowShown)
{
marker.ShowInfoWindow();
}
}
}
/// <summary>
/// Adds a pin to the current map.
/// </summary>
/// <param name="pin">A pin to add.</param>
private void AddPin(MapExPin pin)
{
// If map is not present
if (this.map == null)
{
return;
}
// Create a new marker collection
if (this.markers == null)
{
this.markers = new List <Marker>();
}
// Setup market options
var markerOptions = new MarkerOptions();
markerOptions.SetPosition(new LatLng(pin.Position.Latitude, pin.Position.Longitude));
markerOptions.Anchor(0.5f, 0.5f);
markerOptions.SetTitle(pin.Label);
markerOptions.SetSnippet(pin.Address);
markerOptions.InfoWindowAnchor(0.5f, 0.5f);
// Setup marker icon
var icon = MapExRenderer.GetResourceId(pin.Type);
markerOptions.SetIcon(BitmapDescriptorFactory.FromResource(icon));
// Add marker to the map
var marker = this.map.AddMarker(markerOptions);
this.markers.Add(marker);
pin.InternalId = marker.Id;
// Add event handlers
pin.PropertyChanged += this.OnPinPropertyChanged;
}
