public AdornmentAndData(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, AdornmentElement element, AdornmentRemovedCallback removedCallback)
{
_behavior = behavior;
_visualSpan = visualSpan;
_tag = tag;
_element = element;
_removedCallback = removedCallback;
}
public void RemoveAdornment(AdornmentElement element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
for (int i = 0; (i < _elements.Count); ++i)
{
AdornmentAndData data = _elements[i];
if (data.Adornment == element)
{
_elements.RemoveAt(i);
this.RemoveTranslatableVisual(data);
break;
}
}
}
public void RemovedCallback(object tag, AdornmentElement element)
{
//An adornment was removed ... remove the corresponding entry from the _lineSpans.
_lineSpans.Remove(tag);
}
public bool AddAdornment(AdornmentPositioningBehavior behavior, SnapshotSpan?visualSpan, object tag, AdornmentElement element, AdornmentRemovedCallback removedCallback)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (_isOverlayLayer && behavior != AdornmentPositioningBehavior.OwnerControlled)
{
throw new ArgumentOutOfRangeException("behavior", "Only AdornmentPositioningBehavior.OwnerControlled is supported");
}
if (IsTextRelative(behavior) && !visualSpan.HasValue)
{
throw new ArgumentNullException("visualSpan");
}
bool visible = true;
if (visualSpan.HasValue)
{
//Does the visual span intersect anything visible?
visible = _view.TextViewLines.IntersectsBufferSpan(visualSpan.Value);
}
if (visible)
{
AdornmentAndData data = new AdornmentAndData(behavior, visualSpan, tag, element, removedCallback);
_elements.Add(data);
Children.Add(element);
}
return(visible);
}
public bool AddAdornment(SnapshotSpan visualSpan, object tag, AdornmentElement element)
{
return(this.AddAdornment(AdornmentPositioningBehavior.TextRelative, visualSpan, tag, element, null));
}