/// <summary>
/// Sets an existing iterator to point to a new piece of text.
/// </summary>
/// <param name="text">New text</param>
public override void SetText(string text)
{
if (text == null)
{
throw new ArgumentNullException("text");
}
_text = text;
if (string.IsNullOrEmpty(Text))
{
_textBoundaries = new TextBoundary[0];
_currentIndex = 0;
return;
}
if (_breakIterator == IntPtr.Zero)
{
InitializeBreakIterator();
}
else
{
ErrorCode err;
NativeMethods.ubrk_setText(_breakIterator, Text, Text.Length, out err);
if (err.IsFailure())
{
throw new Exception("BreakIterator.ubrk_setText() failed with code " + err);
}
}
List <TextBoundary> textBoundaries = new List <TextBoundary>();
// Start at the the beginning of the text and iterate until all
// of the boundaries are consumed.
int cur = NativeMethods.ubrk_first(_breakIterator);
TextBoundary textBoundary;
if (!TryGetTextBoundaryFromOffset(cur, out textBoundary))
{
return;
}
textBoundaries.Add(textBoundary);
while (cur != DONE)
{
int next = NativeMethods.ubrk_next(_breakIterator);
if (!TryGetTextBoundaryFromOffset(next, out textBoundary))
{
break;
}
textBoundaries.Add(textBoundary);
cur = next;
}
_textBoundaries = textBoundaries.ToArray();
_currentIndex = 0;
}
