Hey Mike.  Thanks so much for your help.  I've got the highlighting
working!  Have a nice weekend. ~Chad

On Mar 12, 7:23 pm, Mike Ratcliffe <[email protected]>
wrote:
> The closest parallel I can draw to context that is used in Firebug is
> the window object that is in use. As an example, in the main window
> the context would be window but if you were in an iframe in the main
> window then the context would be the iframe window.
>
> If you try to add borders or padding to elements it will always
> interfere with the page. We use positioned divs to produce the
> inspector effect without causing issues on the page.
>
> The pseudocode looks something like:
>
> inject 4 divs into the page with a border of 1px solid blue
>
> on document.mouseover {
>     rect = event.target.getBoundingClientRect()
>
>     size div 1 to (rect.width x 1) and move it to rect.left, rect.top
>     size div 2 to (1 x rect.height) and move it to rect.right,
> rect.top
>     size div 3 to (rect.width x 1) and move it to rect.left,
> rect.bottom
>     size div 4 to (1 x rect.height) and move it to rect.left, rect.top
>
>     attach divs 1 - 4 to document.body
>
> }
>
> on stop inspect {
>     remove divs 1 - 4 to document.body
>
> }
>
> It would be fairly easy to modularize this simple frame inspector but
> to be honest, I don't have time at the moment. As far as the license,
> the usual rules apply.
>
> -
> Mike Ratcliffe
>
> On Mar 12, 6:26 pm, Chad Sowald <[email protected]> wrote:
>
>
>
> > Hi.  I am creating an extension (for Chrome right now) and I need to
> > allow the user to select any page element like Firebug allows the user
> > to do for DOM inspection.  I don't actually need to inspect the DOM or
> > show CSS or anything, I just want to duplicate the element selection
> > process.
>
> > I have looked over inspector.js and have implemented a very simple
> > version that just adds a border around the element.  As you know this
> > causes elements to move around as they are hovered over.  I really do
> > want it to look just like Firebug's element selection with the
> > overlay.  However, it looks like it won't be as trivial to extract the
> > necessary code from the inspector.js file as it also uses the Firebug
> > Context object.
>
> > After looking over when the context is used, it appears to only be
> > used to mark certain elements as non-highlightable, which makes sense.
>
> > Is there someone who can modularize the inspector to a single file so
> > that something like:
>
> > var selector = new ElementSelector();  //ElementSelector is completely
> > self-contained in a file like selector.js
> > selector.select(function(selectedElement) {     //(callback)
> >       if(selectedElement === null) return //no element selected
>
> >       //element was selected, do whatever with it now.
>
> > });
>
> > I understand that the Firebug code uses a BSD 3-clause license.  I
> > believe I'll just need to copy the firebug license.txt file to my
> > extension package and give credit in the code where necessary,
> > correct?
>
> > Thanks for your help.

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