/// <summary>
/// Occurs when the value of the <see cref="ZoomLevel"/> property has changed.
/// </summary>
/// <param name="e">
/// A <see cref="DependencyPropertyChangedEventArgs"/> containing event information.
/// </param>
protected virtual void OnZoomLevelChanged(DependencyPropertyChangedEventArgs e)
{
#if WIN_RT
// The Win8 version of the map control does not allow Zoom Level to be data bound
if (map != null)
{
map.ZoomLevel = PercentBingZoomConverter.PercentToMapLevel(ZoomLevel);
}
#endif
}
protected override void OnApplyTemplate()
#endif
{
base.OnApplyTemplate();
map = GetTemplateChild(PartNames.Map) as Map;
// Validate the template
if (map == null)
{
throw new InvalidOperationException(string.Format("{0} template is invalid. A {1} named {2} must be supplied.", GetType().Name, typeof(Map).Name, PartNames.Map));
}
// Connect credentials
#if WP7
map.CredentialsProvider = credentials;
#endif
#if WP8
if (credentials != null)
{
MapsSettings.ApplicationContext.ApplicationId = credentials.ApplicationId;
MapsSettings.ApplicationContext.AuthenticationToken = credentials.AuthenticationToken;
}
#endif
#if WIN_RT
map.Credentials = credentials;
#endif
// Update the margin
UpdateMargin();
// Connect data
map.DataContext = arItems;
#if WP8
// We must use the toolkit to get the child map items controls and set their items source properly
foreach (var itemsControl in MapExtensions.GetChildren(map).OfType <MapItemsControl>())
{
itemsControl.ItemsSource = arItems;
}
#endif
#if WIN_RT
// Set initial values for properties that can't be data bound in Windows 8
map.Center = Location;
map.ZoomLevel = PercentBingZoomConverter.PercentToMapLevel(ZoomLevel);
#endif
}