張俊芝(ZHANG Junzhi) Reporter
	Description • 6 years ago

There's no way to tell if a selection is active or inactive from CSS if the developer customises the selection style with ::selection. So it's highly unlikely to see the new pseudo-element dropped from final standards, though it's currently in the working draft stage.

I think it's ready to implement the ::inactive-selection pseudo-element now.

	張俊芝(ZHANG Junzhi) Reporter
	Comment 1 • 6 years ago

https://www.w3.org/TR/css-pseudo-4/#highlight-selectors

	Emilio Cobos Álvarez (:emilio)
	Comment 2 • 6 years ago

I think you can do :-moz-window-inactive::selection, right?

But yeah if there's a spec for this it should be easy to implement.

	張俊芝(ZHANG Junzhi) Reporter
	Comment 3 • 6 years ago

Thank you for the information.

However, it doesn't mean exactly the same thing, :-moz-window-inactive means the whole window(i.e. the browser) of the applied element loses the focus, that means div:-moz-window-inactive only takes effects when the whole browser(not just the <div>) loses its focus, while ::inactive-selection take effects when you just focus on any other element.

BTW, I find that div:-moz-window-inactive::-moz-selection doesn't work, so is it also a bug?

	張俊芝(ZHANG Junzhi) Reporter
	Comment 4 • 6 years ago

To carify my previous comment, "any other element" in the above means:

an element outside of a document window but inside the browser, for example, the URL bar in the browser.