[platform-ui-dev] FileEditorInput - controlling close/save events

[Dariusz Wojtas <dwojtas@xxxxxxxxxxxxx>]

I open a Word file in an editor using FileEditorInput class:
 page.openEditor(fileEditorInput, 
IEditorRegistry.SYSTEM_INPLACE_EDITOR_ID);

When user closes the editor, I am asked if the user want to save changes 
prior to closing [yes/no/cancel].
Where can I plug my code to replace the default question, with my own 
question
and different set of buttons [yes/no/yes and do sth extra/yes and 
.../cancel].
Is it much different when closes many editors at a time?

Darek