// Inserts text run into TextBlock in a form consistent with flow schema requirements.
//
// TextBlock has dual role as a text container -
// plain text for TextBox and rich inline-collection content for everything else.
// In case of plain text we insert only string into the text container,
// in all other cases we must wrap eact rext run by Run inline element.
private static void InsertTextRun(ITextPointer position, string text, bool whitespacesIgnorable)
{
// We distinguish these two cases by parent of TextContainer:
// for plain text case it is TextBox.
if (!(position is TextPointer) || ((TextPointer)position).Parent == null || ((TextPointer)position).Parent is TextBox)
{
position.InsertTextInRun(text);
}
else
{
if (!whitespacesIgnorable || text.Trim().Length > 0)
{
Run implicitRun = Inline.CreateImplicitRun(((TextPointer)position).Parent);
((TextPointer)position).InsertTextElement(implicitRun);
implicitRun.Text = text;
}
}
}
