/// ------------------------------------------------------------------------------------
/// <summary>
/// Sets the current book, particularly picking the right set of annotations
/// to add new ones to. Also (and more conspicuously) ends the current Undo task
/// and makes a new one for importing the new book. Should therefore be called
/// BEFORE setting up the Undo action for the creation of the book.
/// </summary>
/// <param name="nCanonicalBookNumber">The canonical book number.</param>
/// <returns>The action handler</returns>
/// ------------------------------------------------------------------------------------
private IActionHandler SetCurrentBookInternal(int nCanonicalBookNumber)
{
// We temporarily un-suppress our action handler long enough to get it so we can
// grab a local copy.
m_suppressor.Dispose();
m_suppressor = null;
IActionHandler actionHandler = m_cache.ActionHandlerAccessor;
m_suppressor = new SuppressSubTasks(m_cache);
if ((m_importedSavedVersion != null && m_importedSavedVersion.BooksOS.Count > 0) ||
(m_savedVersion != null && m_savedVersion.BooksOS.Count > 0))
{
// We want a new undo task for each new book, except the first one
actionHandler.EndOuterUndoTask();
}
// No need to use localizable string from resources because the user will never
// see these labels because we collapse to a single undo task when the import
// completes.
actionHandler.BeginUndoTask("Undo Import Book " + nCanonicalBookNumber,
"Redo Import Book " + nCanonicalBookNumber);
m_annotations = (ScrBookAnnotations)m_scr.BookAnnotationsOS[nCanonicalBookNumber - 1];
return(actionHandler);
}
