internal ISegment[] GetDeletableSegments(ISegment segment)
{
var deletableSegments = ReadOnlySectionProvider.GetDeletableSegments(segment);
if (deletableSegments == null)
{
throw new InvalidOperationException("ReadOnlySectionProvider.GetDeletableSegments returned null");
}
var array = deletableSegments.ToArray();
int lastIndex = segment.Offset;
for (int i = 0; i < array.Length; i++)
{
if (array[i].Offset < lastIndex)
{
throw new InvalidOperationException("ReadOnlySectionProvider returned incorrect segments (outside of input segment / wrong order)");
}
lastIndex = array[i].EndOffset;
}
if (lastIndex > segment.EndOffset)
{
throw new InvalidOperationException("ReadOnlySectionProvider returned incorrect segments (outside of input segment / wrong order)");
}
return(array);
}
internal void RemoveSelectedText()
{
if (this.Document == null)
{
throw ThrowUtil.NoDocumentAssigned();
}
selection.RemoveSelectedText(this);
#if DEBUG
if (!selection.IsEmpty)
{
foreach (ISegment s in selection.Segments)
{
Debug.Assert(ReadOnlySectionProvider.GetDeletableSegments(s).Count() == 0);
}
}
#endif
}
internal void ReplaceSelectionWithText(string newText)
{
if (newText == null)
{
throw new ArgumentNullException("newText");
}
if (this.Document == null)
{
throw ThrowUtil.NoDocumentAssigned();
}
using (this.Document.RunUpdate()) {
RemoveSelectedText();
if (newText.Length > 0)
{
if (ReadOnlySectionProvider.CanInsert(Caret.Offset))
{
this.Document.Insert(Caret.Offset, newText);
}
}
}
}
