[API][DecoratedWindow] Add option to avoid destroying the window when the close button is clicked

[Victor Martinez]

In order to achieve better performance and avoid constant redrawing, sometimes it's better to hide a window instead of destroying/re-creating it. This is the case of Noise's album view popover.

The decorated window API needs an option to hide the window, instead of destroying it, when the close button is clicked. I suggest something like:

public bool hide_on_close { get; set; default = false; }

[Victor Martinez (victored)]

Marking as high-priority since Noise needs it.

[Cris Dywan (kalikiana)]

How about using delete-event instead to stay in line with Gtk.Window API?

[Victor Martinez (victored)]

Not a bad idea. We probably want to change that before releasing the next version.

[Victor Martinez (victored)]

Okay, the new implementation is available on: lp:~victored/granite/decorated-window-api-fixes
It uses the delete-event instead of a custom property. Thanks for the suggestion Christian!