Re: [csswg-drafts] [resize-observer] Which box information should we pass to the callback (#3329)

@bfgeek There would need to be two different option sets, because we're trying to keep the API shape simple - what you have defined right now would create two tasks of the `content-box` and `border-box` which, as noted by @atotic in this [comment](https://github.com/w3c/csswg-drafts/issues/3329#issuecomment-439360802) that this can lead to missing notifications. In order to achieve what you want and avoid the missing notifications is to do something like this:

    ro.observe(elem, {
                      boxToObserve: 'content-box', 
                      boxesToReturnResultsFor: ['border-box', 'content-box']
                      });

This would allow the author to trigger on a specific box's dimension changing and which dimensions the author wants returned.

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Received on Wednesday, 23 January 2019 17:50:50 UTC