/// <summary>
/// Updates the <code>TextMeasurer</code> after a single character has
/// been inserted
/// into the paragraph currently represented by this
/// <code>TextMeasurer</code>. After this call, this
/// <code>TextMeasurer</code> is equivalent to a new
/// <code>TextMeasurer</code> created from the text; however, it will
/// usually be more efficient to update an existing
/// <code>TextMeasurer</code> than to create a new one from scratch.
/// </summary>
/// <param name="newParagraph"> the text of the paragraph after performing
/// the insertion. Cannot be null. </param>
/// <param name="insertPos"> the position in the text where the character was
/// inserted. Must not be less than the start of
/// <code>newParagraph</code>, and must be less than the end of
/// <code>newParagraph</code>. </param>
/// <exception cref="IndexOutOfBoundsException"> if <code>insertPos</code> is less
/// than the start of <code>newParagraph</code> or greater than
/// or equal to the end of <code>newParagraph</code> </exception>
/// <exception cref="NullPointerException"> if <code>newParagraph</code> is
/// <code>null</code> </exception>
public void InsertChar(AttributedCharacterIterator newParagraph, int insertPos)
{
if (CollectStats)
{
PrintStats();
}
if (WantStats)
{
CollectStats = true;
}
FStart = newParagraph.BeginIndex;
int end = newParagraph.EndIndex;
if (end - FStart != FChars.Length + 1)
{
InitAll(newParagraph);
}
char[] newChars = new char[end - FStart];
int newCharIndex = insertPos - FStart;
System.Array.Copy(FChars, 0, newChars, 0, newCharIndex);
char newChar = newParagraph.setIndex(insertPos);
newChars[newCharIndex] = newChar;
System.Array.Copy(FChars, newCharIndex, newChars, newCharIndex + 1, end - insertPos - 1);
FChars = newChars;
if (FBidi != null || Bidi.RequiresBidi(newChars, newCharIndex, newCharIndex + 1) || newParagraph.GetAttribute(TextAttribute.BIDI_EMBEDDING) != null)
{
FBidi = new Bidi(newParagraph);
if (FBidi.LeftToRight)
{
FBidi = null;
}
}
FParagraph = StyledParagraph.InsertChar(newParagraph, FChars, insertPos, FParagraph);
InvalidateComponents();
}
