On 2014-03-23, 6:07 AM, Robert O'Callahan wrote:
On Fri, Mar 21, 2014 at 9:55 PM, Patrick Brosset <[email protected]>wrote:
We're struggling with a limitation related to the devtools highlighter
(the outline you see in this video:
https://www.youtube.com/watch?v=zBYEg40ByCM).
Today, the highlighter is created with XUL nodes that are appended in the
browser XUL markup, in one of the parent elements of the page currently
being inspected. These XUL nodes are absolutely positioned over the element
being highlighted.
This technique has served us well until we wanted our devtools to work on
Fennec, Fxos and E10S mode. In these cases, the page being inspected
doesn't have a reachable parent element that we can use to append our
highlighter elements, and appending it inside the content page itself isn't
really a viable option because we don't want to impact the content in any
way.
I think you need an API to add anonymous content to the root element of the
page. We don't have such an API at the moment but it might not be hard to
add.
Bug 924692 is making the canvas frame have a native anonymous content.
If that is where you would like to stick that element in, then art of
the frame constructions bits is being done in that bug.
Cheers,
Ehsan
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