On Wednesday, June 4, 2014 12:42:48 PM UTC+5:30, Patrick Brosset wrote: > On 3/23/14, 10:22 PM, Ehsan Akhgari wrote: > > 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 > Bug 924692 landed yesterday so I thought this would be a good time to > revive this thread. > > So with this bug, there's now a way to insert anonymous content in the > canvas frame, which is awesome. > From what I understood looking at the bug and code, I can see 2 things > potentially missing for the devtools highlighter use case: > > - the code that creates the anonymous content seems pretty specifically > tied to the touch caret and it doesn't seem possible as of now to insert > any content, > - I don't think this can be accessed by privileged JS code yet. > > I wanted to file a bug to address these 2 points, but wanted to check > here first. > > Cheers, > Patrick
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