[whatwg] cross-domain scrollIntoView on frames and iframes
ian at hixie.ch
Tue Jun 2 23:38:11 PDT 2009
On Fri, 3 Apr 2009, Ojan Vafai wrote:
> I'm suggesting an addition to cross-domain (i)frames that allows
> scrolling specific content into view. The use case is sites that
> aggregate data from many sites (e.g. search engines) and want to display
> that data in an iframe. They can load the page in an iframe, but they
> have no way to make the content visible as they don't have access to the
> iframe's contents.
> option below, but I'll include another one for good measure.
> 1) Add a scrollPathIntoView (with a better name) on iframes that takes
> either an xpath or a css selector and scrolls the specified item into
> view. If no such item exists, it does nothing. If one or more such items
> exist, it calls scrollIntoView on the first matching item.
> 2) Add a css or xpath expression to fragment identifiers. Tthe iframe
> src can be set to http://foo.com#css(.foo <http://foo.com/#css(.foo>
> #bar). Same as above applies. If there's no match, it's a noop. If there
> is a match, it scrolls the first one into view.
> In both cases, no explicit success or failure is returned to the caller
> as that would leak the iframes DOM across domains.
> This API can obviously be supported on same-domain iframes as well, but
> it's not really necessary since you can just dig into the DOM of the
On Mon, 6 Apr 2009, Jonas Sicking wrote:
> From my point of view I'm not sure how interesting this whole feature
> is. We had support in firefox for XPointer for many years and saw little
> to no uptake. I'm not sure if anyone complained when we removed the
> support even (which would be pretty remarkable).
It seems that with such an API and with some careful timing measurements,
you could determine the contents of a foreign iframe. I'm not sure that's
a good idea.
I tried to come up with some alternative solutions, but I really haven't
been very successful.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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