|
public CreateAnchor ( int offset ) : |
||
| offset | int | |
| return | ||
public AnchorSegment(TextDocument document, int offset, int length)
{
Debug.Assert(document != null);
this.start = document.CreateAnchor(offset);
this.start.SurviveDeletion = true;
this.end = document.CreateAnchor(offset + length);
this.end.SurviveDeletion = true;
}
/// <summary>
/// Creates a new AnchorSegment that creates new anchors.
/// </summary>
public AnchorSegment(TextDocument document, int offset, int length)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
this.start = document.CreateAnchor(offset);
this.start.SurviveDeletion = true;
this.start.MovementType = AnchorMovementType.AfterInsertion;
this.end = document.CreateAnchor(offset + length);
this.end.SurviveDeletion = true;
this.start.MovementType = AnchorMovementType.BeforeInsertion;
}
public void AnchorInEmptyDocument()
{
TextAnchor a1 = document.CreateAnchor(0);
TextAnchor a2 = document.CreateAnchor(0);
a1.MovementType = AnchorMovementType.BeforeInsertion;
a2.MovementType = AnchorMovementType.AfterInsertion;
Assert.AreEqual(0, a1.Offset);
Assert.AreEqual(0, a2.Offset);
document.Insert(0, "x");
Assert.AreEqual(0, a1.Offset);
Assert.AreEqual(1, a2.Offset);
}
