public HeightTree(TextDocument document, double defaultLineHeight)
{
this.document = document;
weakLineTracker = WeakLineTracker.Register(document, this);
this.DefaultLineHeight = defaultLineHeight;
RebuildDocument();
}
/// <summary>
/// Registers the <paramref name="targetTracker"/> as line tracker for the <paramref name="textDocument"/>.
/// A weak reference to the target tracker will be used, and the WeakLineTracker will deregister itself
/// when the target tracker is garbage collected.
/// </summary>
public static WeakLineTracker Register(TextDocument textDocument, ILineTracker targetTracker)
{
if (textDocument == null)
throw new ArgumentNullException("textDocument");
if (targetTracker == null)
throw new ArgumentNullException("targetTracker");
WeakLineTracker wlt = new WeakLineTracker(textDocument, targetTracker);
textDocument.LineTrackers.Add(wlt);
return wlt;
}
public void Dispose()
{
if (weakLineTracker != null)
weakLineTracker.Deregister();
this.root = null;
this.weakLineTracker = null;
}