internal void BeginPlaceholderMode(IndexTrackingStringBuilder placeholderSource, bool reset = false)
{
if (m_placeholderData == null)
{
m_placeholderData = new PlacholderData(placeholderSource, reset);
}
else if (m_placeholderData.Source != placeholderSource)
{
throw new Exception("Attempting to start placeholder mode on a TrackedStringManager that was already in placeholder mode with a different source.");
}
}
/// <summary>
/// If you built your SubstringTracker in placeholder mode (see placeholder mode constructor), then
/// you must call this once your text is all setup.
/// </summary>
internal void PlaceholderSetupComplete()
{
string toInsert = m_placeholderData.Source.Builder.ToString();
int insertIndex = m_placeholderData.Source.StartIndex;
// Update the text to contain the string builder's result
if (m_placeholderData.Reset)
{
this.Text = toInsert;
// We're doing a hard reset
this.m_trackedStrings.Clear();
}
else
{
this.Text = this.Text.Insert(insertIndex, toInsert);
}
// Insert the placeholders first.
// Note: This must be done first so that when we update the existing tracked strings
TrackedString[] updateSkiplist = new TrackedString[m_placeholderData.PlaceholderItems.Count];
for (int ind = 0; ind < m_placeholderData.PlaceholderItems.Count; ++ind)
{
Tuple <TrackedString, int> placeholderItem = m_placeholderData.PlaceholderItems[ind];
placeholderItem.Item1.ResetStringInternal(placeholderItem.Item2);
this.AddItem(placeholderItem.Item1);
updateSkiplist[ind] = placeholderItem.Item1;
}
if (!m_placeholderData.Reset)
{
this.UpdateItemsInRange(insertIndex, toInsert.Length, updateSkiplist);
}
m_placeholderData = null;
this.HasChanges = true;
}
