I think what you really want is a border that shows *inside* the frame bounds, 
but over all of the content in that frame. There isn't really a mechanism to 
draw things like this currently.

Simon

On Jul 17, 2012, at 10:44 AM, Patrick East <[email protected]> wrote:

> Thank for the suggestion, I found that using the outline style on a frame and 
> iframe :hover selector only seemed to work on iframes and not frames in a 
> frameset. I’ve attached a sample that shows the problem, if you’re curious to 
> see what happens. If you look at the frameset.html page and mouse over the 
> bottom frame that contains an iframe, the border style is the only one that 
> shows up, and it is on the outermost frame in the frameset gets a border in 
> addition to the iframe.
>  
> I suspect the behavior we are trying to get isn’t really achievable with just 
> the default html.css styling. We are going to look into using the focus ring 
> mechanism as James MacLean suggested earlier.
>  
>  
> Patrick East
> [email protected]
>  
> From: Elliott Sprehn [mailto:[email protected]] 
> Sent: Monday, July 16, 2012 12:54 PM
> To: Patrick East
> Cc: [email protected]
> Subject: Re: [webkit-dev] "highlighting" a frame
>  
> You'll want outline not border for this.
>  
>  
> From: [email protected] [mailto:[email protected]] On Behalf Of W. 
> James MacLean
> Sent: Wednesday, July 11, 2012 1:09 PM
> To: Patrick East
> Cc: [email protected]
> Subject: Re: [webkit-dev] "highlighting" a frame
>  
> If you're just looking to draw a border, will the focus rings mechanism 
> suffice?
>  
>  
> 
> On Mon, Jul 9, 2012 at 10:37 PM, Patrick East <[email protected]> wrote:
> Hello,
>  
> We are working on a custom build of WebKit that will "highlight" a frame when 
> the mouse moves over it (the intent is to have it draw a border around it for 
> use with a custom input device). We have tried modifying the webcore html.css 
> file adding in a :hover selector for frame and iframe that sets the border 
> property, but this doesn't work correctly for embedded frames. When we test 
> mousing over them it draws the border on the outer-most frame and not the 
> inner frame which is what I want.
>  
> Unfortunately I don't know much about the css code in WebKit, so any 
> suggestions on how this could be achieved would be much appreciated. 
>  
> Thanks!
>  
> Patrick East
> [email protected]
> 
> _______________________________________________
> webkit-dev mailing list
> [email protected]
> http://lists.webkit.org/mailman/listinfo/webkit-dev
> 
>  
> <frameset.html><links.html><spatial-navigation-test-cases - 
> iframe_outline.html>_______________________________________________
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