public DeleteCore DeleteEntity(Type clazz, int id, IUnitOfWork uow = null, Action beforeDeletion = null)
{
var deletion = new DeleteCore(configuration, uow);
deletion.BeforeDeletion = beforeDeletion;
#region Подготовка удаления
IPage <PrepareDeletionViewModel> preparePage = null;
using (var cancellation = new CancellationTokenSource()) {
try
{
preparePage = navigation.OpenViewModel <PrepareDeletionViewModel, DeleteCore, CancellationTokenSource>(null, deletion, cancellation);
deletion.PrepareDeletion(clazz, id, cancellation.Token);
if (cancellation.IsCancellationRequested)
{
deletion.Close();
return(deletion);
}
}
finally
{
if (preparePage != null)
{
navigation.ForceClosePage(preparePage, CloseSource.External);
}
}
}
#endregion
#region Диалог удаления
if (deletion.TotalLinks > 0)
{
var deletionPage = navigation.OpenViewModel <DeletionViewModel, DeleteCore>(null, deletion);
deletionPage.ViewModel.DeletionAccepted = () => RunDeletion(deletion);
deletionPage.PageClosed += delegate(object sender, PageClosedEventArgs e) {
if (e.CloseSource != CloseSource.Self)
{
deletion.Close();
}
};
}
else if (interactive.Question($"Удалить {deletion.RootEntity.Title}?"))
{
RunDeletion(deletion);
}
else
{
deletion.Close();
deletion.DeletionExecuted = false;
}
#endregion
return(deletion);
}
private void RunDeletion(DeleteCore deletion)
{
using (var cancellation = new CancellationTokenSource()) {
var progressPage = navigation.OpenViewModel <DeletionProcessViewModel, DeleteCore, CancellationTokenSource>(null, deletion, cancellation);
deletion.RunDeletion(cancellation.Token);
if (cancellation.IsCancellationRequested)
{
deletion.Close();
return;
}
navigation.ForceClosePage(progressPage, CloseSource.External);
deletion.Close();
}
}