/// <summary>
/// An event handler called after a marker is removed.
/// </summary>
/// <param name="sender">The sender object.</param>
/// <param name="e">The event arguments.</param>
private void OnAfterMarkerRemoved(object sender, ConcurrentComponentCollection<MapMarker>.ItemChangedEventArgs e)
{
// If the marker is null, do nothing.
if (null == e.Item) return;
// Remove the marker event handlers.
this.OnRemoveMarkerEventHandlers(e.Item);
// Refresh the marker.
this.Invalidate(e.Item.Bounds.Add(this.bitmapLocation));
// If this marker equals the highlighted marker.
if (e.Item == this.highlightMarker)
{
if (null != this.emphasizedMarker)
{
this.OnShowAnnotation(this.annotationInfo, this.emphasizedMarker.Name, this.emphasizedMarker);
}
else if (null != this.highlightRegion)
{
this.OnShowAnnotation(this.annotationInfo, this.highlightRegion.Name, this.highlightRegion);
}
else
{
this.OnHideAnnotation(this.annotationInfo);
}
}
else if (e.Item == this.emphasizedMarker)
{
if (null != this.highlightRegion)
{
this.OnShowAnnotation(this.annotationInfo, this.highlightRegion.Name, this.highlightRegion);
}
else
{
this.OnHideAnnotation(this.annotationInfo);
}
}
// Dispose the marker.
if (this.markerAutoDispose)
{
e.Item.Dispose();
}
}
/// <summary>
/// An event handler called when a marker is set.
/// </summary>
/// <param name="sender">The sender object.</param>
/// <param name="e">The event arguments.</param>
private void OnAfterMarkerSet(object sender, ConcurrentComponentCollection<MapMarker>.ItemSetEventArgs e)
{
// If the old marker is different from the new marker.
if (e.OldItem != e.NewItem)
{
this.OnAfterMarkerRemoved(sender, new ConcurrentComponentCollection<MapMarker>.ItemChangedEventArgs(e.Index, e.OldItem));
this.OnAfterMarkerInserted(sender, new ConcurrentComponentCollection<MapMarker>.ItemChangedEventArgs(e.Index, e.NewItem));
}
}
/// <summary>
/// An event handler called after a marker is inserted.
/// </summary>
/// <param name="sender">The sender object.</param>
/// <param name="e">The event arguments.</param>
private void OnAfterMarkerInserted(object sender, ConcurrentComponentCollection<MapMarker>.ItemChangedEventArgs e)
{
// If the marker is null, do nothing.
if (null == e.Item) return;
// Add the marker event handlers.
this.OnAddMarkerEventHandlers(e.Item);
// Update the marker.
e.Item.Update(this.mapBounds, this.mapScale);
// Refresh the marker.
this.Invalidate(e.Item.Bounds.Add(this.bitmapLocation));
}