/// <summary>
/// Pass it on...
/// </summary>
public override void OnAboutToEdit()
{
if (m_decoratedEditingHelper != null)
{
m_decoratedEditingHelper.OnAboutToEdit();
}
else
{
base.OnAboutToEdit();
}
}
/// <summary>
/// Create one.
/// </summary>
/// <param name="owner"></param>
/// <param name="sda"></param>
/// <param name="site"></param>
/// <param name="updateDescription"></param>
/// <param name="fTurnOnMonitor">if true, start monitoring. if false, suspend/disable monitoring.</param>
/// <param name="fSuppressRecordingPriorSelection">True for operations (currently only ReplaceAll)
/// where we do not want to record the prior selection. This prevents calling editinghelper.OnAboutToEdit,
/// which therefore doesn't save info about the current selection. The current actual effect
/// is to suppress the work of the AnnotationAdjuster for the selected paragraphs.</param>
public DataUpdateMonitor(Control owner, ISilDataAccess sda, IVwRootSite site,
string updateDescription, bool fTurnOnMonitor, bool fSuppressRecordingPriorSelection)
{
// DataUpdateMonitor may be nested, so make sure we're not already monitoring the site.
m_fTurnOnMonitor = fTurnOnMonitor && (site == null || !s_sitesMonitoring.Contains(site));
if (!m_fTurnOnMonitor)
{
return;
}
// register this site as being monitored.
if (site != null)
{
s_sitesMonitoring.Add(site);
}
Debug.Assert(sda != null);
if (s_UpdateSemaphores.ContainsKey(sda))
{
UpdateSemaphore semaphore = s_UpdateSemaphores[sda];
if (semaphore.fDataUpdateInProgress)
{
throw new Exception("Concurrent access on Database detected");
}
// Set ((static semaphore) members) for this data update
semaphore.fDataUpdateInProgress = true;
semaphore.sDescr = updateDescription;
}
else
{
s_UpdateSemaphores[sda] = new UpdateSemaphore(true, updateDescription);
}
m_Owner = owner;
m_sda = sda;
m_rootSite = site;
if (m_rootSite != null)
{
m_editingHelper = ((IRootSite)m_rootSite).EditingHelper;
}
// store original selection info.
// Note, some of its internals are computed from the actual selection
// which can get changed during the life of DataUpdateMonitor.
// But its properties and Hvo(fEndPoint) should remain the same.
if (m_editingHelper != null && !fSuppressRecordingPriorSelection)
{
m_tsi = new TextSelInfo(m_editingHelper.EditedRootBox);
m_editingHelper.OnAboutToEdit();
}
// Set wait cursor
if (owner != null)
{
m_oldCursor = owner.Cursor;
owner.Cursor = Cursors.WaitCursor;
}
}
