private void CreateFlatTextRanges()
{
foreach (XDocument document in this.documents)
{
FlatTextRange currentRange = null;
foreach (XElement run in document.Descendants(FlatConstants.RunElementName))
{
if (!run.HasElements)
{
continue;
}
FlatText flatText = FlattenRunElement(run);
if (flatText == null)
{
continue;
}
// If current Run doesn't belong to same parent (like paragraph, hyperlink, etc.)
// create new FlatTextRange, otherwise use current one.
if (currentRange == null || currentRange.Parent != run.Parent)
{
currentRange = this.CreateFlatTextRange(run.Parent);
}
currentRange.AddFlatText(flatText);
}
}
}
private static void ReplaceText(FlatText flatText, int searchStartIndex, int searchEndIndex, string replace)
{
string text = string.Empty;
if (flatText.StartIndex < searchStartIndex)
{
// Leave text that is before the searched text.
text = flatText.Text.Remove(searchStartIndex - flatText.StartIndex);
}
text += replace;
if (flatText.EndIndex > searchEndIndex)
{
// Leave text that is after the searched text.
text += flatText.Text.Substring(searchEndIndex - flatText.StartIndex + 1);
}
flatText.Text = text;
}
public void FindAndReplace(string find, string replace, StringComparison comparisonType)
{
int searchStartIndex = -1, searchEndIndex = -1, searchPosition = 0;
while ((searchStartIndex = this.rangeText.ToString().IndexOf(find, searchPosition, comparisonType)) != -1)
{
searchEndIndex = searchStartIndex + find.Length - 1;
// Find FlatText that contains the beginning of the searched text.
LinkedListNode <FlatText> node = this.FindNode(searchStartIndex);
FlatText flatText = node.Value;
ReplaceText(flatText, searchStartIndex, searchEndIndex, replace);
// Remove next FlatTexts that contain parts of the searched text.
this.RemoveNodes(node, searchEndIndex);
this.ResetRangeText();
searchPosition = searchStartIndex + replace.Length;
}
}
private void AddRangeText(FlatText flatText)
{
flatText.SetIndexes(this.rangeText.Length);
this.rangeText.Append(flatText.Text);
}
public void AddFlatText(FlatText flatText)
{
this.range.AddLast(flatText);
this.AddRangeText(flatText);
}
