protected virtual void OnOverlayChanged(OverlayChangedOverlaySwitcherEventArgs e)
{
EventHandler<OverlayChangedOverlaySwitcherEventArgs> handler = OverlayChanged;
if (handler != null)
{
handler(this, e);
}
}
private void ChangeBaseOverlay(OverlayItem item)
{
if (IsLoaded)
{
OverlayChangedOverlaySwitcherEventArgs overlaySwitchedEventArgs = new OverlayChangedOverlaySwitcherEventArgs(item.Overlay);
OnOverlayChanged(overlaySwitchedEventArgs);
if (overlaySwitchedEventArgs.Cancel)
{
item.IsVisible = false;
}
else
{
foreach (Overlay overlay in CurrentMap.Overlays.Where(o => o.IsBase))
{
overlay.IsVisible = item.Overlay == overlay;
}
CurrentMap.Refresh();
}
}
}
