public void SelectMarker(MapMarker mapMarker, bool keepPrev)
{
if (!keepPrev)
{
SelectedItems.Clear();
}
if (!SelectedItems.Contains(mapMarker.Data))
{
SelectedItems.Add(mapMarker.Data);
}
}
private MapMarker CreateMarker(object sourceItem)
{
var template = ItemTemplateSelector != null
? ItemTemplateSelector.SelectTemplate(sourceItem, null) ?? ItemTemplate
: ItemTemplate;
if (template == null)
{
return(null);
}
var dataElement = template.LoadContent() as FrameworkElement;
if (dataElement == null)
{
return(null);
}
var labelTemplate = _mapControl.ShowLabel ? (LabelTemplateSelector != null
? LabelTemplateSelector.SelectTemplate(sourceItem, null) ?? LabelTemplate
: LabelTemplate) : null;
var container = new MapMarkerContainer();
container.SetValue(StyleProperty, MarkerContainerStyle);
container.Content = dataElement;
container.DataContext = sourceItem;
if (labelTemplate != null)
{
container.LabelContent = labelTemplate.LoadContent() as FrameworkElement;
}
var marker = new MapMarker(container);
marker.MouseDown += (sender, args) => SelectMarker((MapMarker)sender,
Keyboard.IsKeyDown(Key.LeftShift) || (Keyboard.IsKeyDown(Key.RightShift) ||
Keyboard.IsKeyDown(Key.LeftCtrl) || (Keyboard.IsKeyDown(Key.RightCtrl))));
return(marker);
}