| static private CreateMapOverlay ( object content, System.Windows.DataTemplate contentTemplate ) : MapOverlay | ||
| content | object | Content of the MapOverlay |
| contentTemplate | System.Windows.DataTemplate | Template to be used in the MapOverlay |
| return | MapOverlay | |
/// <summary>
/// Takes the target object and create the corresponding MapLayer that will be used
/// to host in MapOverlays all the items provided.
/// </summary>
/// <param name="obj">Object from the source collection to be processed</param>
/// <returns>The MapLayer that will be used to host the items from the source</returns>
/// <remarks>
/// It only supports two types of objects 1) MapItemsControl or 2) anything else.
/// For MapItemsControls, the creation of the MapOverlays will be deferred to the MapItemsControl
/// </remarks>
private static MapLayer GetMapLayerForObject(object obj)
{
MapLayer mapLayer;
MapItemsControl mapItemsControl;
// Only to types of objects supported per se.
// 1) MapItemsControl
// 2) Everything else
mapItemsControl = obj as MapItemsControl;
if (mapItemsControl != null)
{
// MapsItemsControl does their own control of creation of MapOverlays
// because by the time we are here, items may be there already.
// For that reason, we only bring the MapLayer an add it.
mapLayer = mapItemsControl.MapLayer;
Debug.Assert(mapLayer.Count == mapItemsControl.Items.Count, "MapLayer and MapItemsControl.Items count should match");
}
else
{
// Only 1 element. Create MapOverlay and insert
mapLayer = new MapLayer();
MapOverlay mapOverlay;
mapOverlay = MapChild.CreateMapOverlay(obj, null);
mapLayer.Add(mapOverlay);
}
return(mapLayer);
}
/// <summary>
/// Inserts the item at the specified index in the target collection
/// </summary>
/// <param name="index">Index at which object will be inserted</param>
/// <param name="obj">Object to be inserted</param>
protected override void InsertItemInternal(int index, object obj)
{
MapOverlay mapOverlay;
if (this.ObjectToMapOverlayMapping.ContainsKey(obj))
{
throw new InvalidOperationException("Attempted to insert the same object twice");
}
mapOverlay = MapChild.CreateMapOverlay(obj, this.ItemTemplate);
this.MapLayer.Insert(index, mapOverlay);
this.ObjectToMapOverlayMapping.Add(obj, mapOverlay);
}