On Apr 13, 2014, at 5:21 AM, Aryeh Gregor a...@aryeh.name wrote:
On Fri, Apr 11, 2014 at 9:05 PM, Ryosuke Niwa rn...@apple.com wrote:
Thanks for the pointer.
Unfortunately, we might need to take a slightly different approach more
based on the CSS box tree because whitespace collapsing, etc... are defined
in CSS2.1 and CSS level 3 specifications.
As far as I know, CSS does not define the box tree with nearly enough
precision to allow basing a precise innerText spec on it. From
black-box testing at the time I wrote the spec, it seemed to me that
WebKit's implementation was built on some sort of internal CSS
representation that does not match anything that currently exists in
spec-land. So I'm skeptical of the feasibility of this approach until
someone rewrites CSS in a more precise fashion. I also don't know if
all implementations could support such an approach at all -- IIRC, I
was told that for Gecko to even support display:none in
Selection.toString was difficult.
Right, but the reason WebKit's implementation doesn't match any spec is because
there is no spec! With a sufficiently precise spec, we should be able to
converge at least on innerText.
Having said that, I do agree we need to consult with CSS WG to have a more
precise spec. for text layout in order to spec innerText.
- R. Niwa
