Re: js-info polishing

[Per Bothner]

On 4/29/21 9:40 AM, Gavin Smith wrote:
> Another problem: Navigate to
>
> https://per.bothner.com/tmp/Kawa-txjs-plain/index.html
>
> type "i" then "constant-fold", select the option in the menu, then press  
> Return.
>
> Then the page
>
> https://per.bothner.com/tmp/Kawa-txjs-plain/Application-and-Arguments-Lists.html#index-constant_002dfold
>
> is correctly loaded, but the side bar menu is completely expanded, and scrolled
> to the top.
The logic for updating the sidebar looks for matches to the URL in the ToC.
However, index links aren't in the ToC.  We could fix this by using the Section
from the index to update the sidebar.  Unfortunately, we have the same problem
for cross-reference to @anchor pseudo-nodes - which also aren't in the ToC.

I think we have to scan the loaded page "up" from the linked element until we 
get to
a node-name that is in the ToC.  This is made more complicated because the page
and the sidebar are usually in separate frames, so message-passing is needed.

As an aside, that we "fixed" the structure of the HTML may help here,
since it makes it easier to scan out from the anchor link for ancestor <div>
elements and collect their 'id' attributes as a list (that in turn we can use
when searching the ToC for a match).
--
        --Per Bothner
per@bothner.com   http://per.bothner.com/