[PATCH 4 of 4] hgweb: add a link to followlines in descending direction

[Gregory Szorc]

On Tue, Apr 11, 2017 at 6:09 AM, Denis Laxalde <denis at laxalde.org> wrote:

> # HG changeset patch
> # User Denis Laxalde <denis.laxalde at logilab.fr>
> # Date 1491838600 -7200
> #      Mon Apr 10 17:36:40 2017 +0200
> # Node ID 4895e777df5cc64eccd038d71a9f9a5b969a5ea0
> # Parent  a24bf350ea723273831d6531a1345ed458312126
> # Available At http://hg.logilab.org/users/dlaxalde/hg
> #              hg pull http://hg.logilab.org/users/dlaxalde/hg -r
> 4895e777df5c
> hgweb: add a link to followlines in descending direction
>
> We change the content of the followlines popup to display two links
> inviting
> to follow the history of selected lines in ascending (as before) and
> descending directions. The popup now renders as:
>
>   follow history of lines <fromline>:<toline>:
>   <a href=...>ascending</a> / <a href=...>descending</a>
>

How difficult would it be to not render the "descending" link when we're
already looking at the latest changeset / file revision? As it is today,
the "descending" link goes to a blank page.


>
> diff --git a/mercurial/templates/static/followlines.js
> b/mercurial/templates/static/followlines.js
> --- a/mercurial/templates/static/followlines.js
> +++ b/mercurial/templates/static/followlines.js
> @@ -204,13 +204,23 @@ document.addEventListener('DOMContentLoa
>          //   <div class="followlines-link">
>          var aDiv = document.createElement('div');
>          aDiv.classList.add('followlines-link');
> -
> -        //     <a href="/log/<rev>/<file>?patch=&linerange=...">
> -        var a = document.createElement('a');
> +        aDiv.textContent = 'follow history of lines ' + fromline + ':' +
> toline + ':';
> +        var linesep = document.createElement('br');
> +        aDiv.appendChild(linesep);
> +        //     link to "ascending" followlines
> +        var aAsc = document.createElement('a');
>          var url = targetUri + '?patch=&linerange=' + fromline + ':' +
> toline;
> -        a.setAttribute('href', url);
> -        a.textContent = 'follow lines ' + fromline + ':' + toline;
> -        aDiv.appendChild(a);
> +        aAsc.setAttribute('href', url);
> +        aAsc.textContent = 'ascending';
> +        aDiv.appendChild(aAsc);
> +        var sep = document.createTextNode(' / ');
> +        aDiv.appendChild(sep);
> +        //     link to "descending" followlines
> +        var aDesc = document.createElement('a');
> +        aDesc.setAttribute('href', url + '&descend=');
> +        aDesc.textContent = 'descending';
> +        aDiv.appendChild(aDesc);
> +
>          div.appendChild(aDiv);
>
>          return [div, button];
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