You want to confirm with the user and save twice?
And what does QuotationPanelCommand do?
-=Cliff>
Yes, I want confirm user twice. CloseQuotationPanelCommand handle remove mediators and proxy for QuotationPanel, QuotationHeader and QuotationLine.
Provisional solution, in QuotationPanelMediator I check two Line and Header need to save. Then show confirm message. After user confirm YES, QuotationPanelMediator call LinesMediator.doSave() and HeaderMediator.doSave(). After all, PanelMediator send notify to trigger CloseQuotationPanelCommand.