internal SceneEditTransaction(IExternalChanges externalChanges, SceneDocument document, IUndoTransaction undo)
{
this.document = document;
this.delayExternalChanges = externalChanges != null?externalChanges.DelayNotification() : (IDisposable)null;
this.undo = undo;
}
public new bool?ShowDialog()
{
bool?dialogResult = null;
using (IDisposable disposable = TemporaryCursor.SetCursor(Cursors.Arrow))
{
try
{
try
{
base.SetValue(Dialog.IsModalProperty, (object)true);
IExternalChanges service = null;
if (Dialog.ServiceProvider != null)
{
service = (IExternalChanges)Dialog.ServiceProvider.GetService(typeof(IExternalChanges));
}
if (service == null)
{
dialogResult = base.ShowDialog();
}
else
{
using (IDisposable disposable1 = service.DelayNotification())
{
dialogResult = base.ShowDialog();
}
}
}
catch (Win32Exception win32Exception1)
{
Win32Exception win32Exception = win32Exception1;
if (win32Exception.ErrorCode != -2147467259 || (win32Exception.NativeErrorCode != 1400 || !(win32Exception.TargetSite.Name == "PostMessage")) && (win32Exception.NativeErrorCode != 87 || !(win32Exception.TargetSite.Name == "SetFocus")))
{
throw;
}
else
{
dialogResult = base.DialogResult;
}
}
}
finally
{
base.SetValue(Dialog.IsModalProperty, (object)false);
if (Application.Current != null && Application.Current.MainWindow != null)
{
Application.Current.MainWindow.Dispatcher.Invoke(DispatcherPriority.Render, new TimeSpan(0, 0, 3), new DispatcherOperationCallback((object arg) => null), null);
}
}
}
return(dialogResult);
}