public override void CanClose(Action <bool> callback)
{
if (!HasChanges)
{
CheckAndCloseView();
callback(true);
return;
}
var saveResult = dialogService.ShowConfirmationWithCancel("MarkPad", "Save file", "Do you want to save the changes to '" + MarkpadDocument.Title + "'?",
new ButtonExtras(ButtonType.Yes, "Save",
string.IsNullOrEmpty(MarkpadDocument.SaveLocation) ? "The file has not been saved yet" : "The file will be saved to " + Path.GetFullPath(MarkpadDocument.SaveLocation)),
new ButtonExtras(ButtonType.No, "Discard", "Discard the changes to this file"),
new ButtonExtras(ButtonType.Cancel, "Cancel", "Cancel closing the application")
);
if (saveResult == true)
{
var finishedWork = shell.DoingWork(string.Format("Saving {0}", MarkpadDocument.Title));
Save()
.ContinueWith(t =>
{
finishedWork.Dispose();
if (t.IsCompleted)
{
CheckAndCloseView();
callback(true);
}
else
{
callback(false);
}
}, TaskScheduler.FromCurrentSynchronizationContext());
return;
}
if (saveResult == false)
{
CheckAndCloseView();
callback(true);
return;
}
callback(false);
}