Fossil

    TimelineGraph(tx);
  }
}());

/*
** Timeline keyboard navigation shortcuts:
**
** ### NOTE: The keyboard shortcuts are listed in /timeline help text. ###
**
** When navigating to a page with a timeline display, such as /timeline, /info,
** or /finfo, keyboard navigation mode needs to be "activated" first, i.e. if no
** timeline entry is focused yet, pressing any of the listed keys (except ESC)
** sets the visual focus indicator to the highlighted or current (check-out)
** entry if available, or to the topmost entry otherwise. A session cookie[0] is
** used to direct pages loaded in the future to enable keyboard navigation mode
** and automatically set the focus indicator to the highlighted, current, or
** topmost entry. Pressing N and M on the /timeline page while the topmost or
** bottommost entry is focused loads the next or previous page if available,
** similar to the [↑ More] and [↓ More] links. Pressing L disables keyboard
** navigation, i.e. removes the focus indicator and deletes the session cookie.
** When navigating backwards or forwards in browser history, the focused entry
** is restored using a hidden[1] input field.
**
** [0]: The lifetime and values of cookies can be tracked on the /cookies page.
** A session cookie is preferred over other storage APIs because Fossil already
** requires cookies to be enabled for reasonable functionality, and it's more

**
**  o kTMLN: ensure the correct page is opened when used from /finfo (it seems
**    the tooltip also gets this "wrong", but maybe that's acceptable, because
**    in order to be able to construct /file URLs, the information provided by
**    the timeline-data-N blocks would have to be extended).
**  o kFRST, kLAST: check if the previous/next page should be opened if focus is
**    already at the top/bottom.
**  o Improve scrolling the focused element into view for browsers without the
**    Element.scrollIntoViewIfNeeded() function, maybe with a Polyfill, or
**    something similar to the scrollToSelected() function in this source file.
*/
(function(){
  window.addEventListener('load',function(){
    function focusDefaultId(){
      var tn = document.querySelector(
                '.timelineSelected:not(.timelineSecondary) .tl-nodemark')
                || document.querySelector('.timelineSelected .tl-nodemark')

    }
    function timelineGetRowInfo(id){
      var ti;
      for(var i=0; ti=timelineGetDataBlock(i); i++){
        for( var k=0; k<ti.rowinfo.length; k++ ){
          if( id=='m' + ti.rowinfo[k].id ) return {
            'baseurl': ti.baseUrl,
            'filediff': ti.fileDiff,
            'hashdigits': ti.hashDigits,
            'hash': ti.rowinfo[k].h,
            'branch': ti.rowinfo[k].br
          };
        }
      }
      return null;
    }
    function focusScrollToIntoViewTheFossilWay(e){
      var y = 0;
      do{
        y += e.offsetTop;
      }while( e = e.offsetParent );
      window.scrollTo(0,y-window.innerHeight/2);
    }
    function focusVisualize(id,scroll){
      var td = document.querySelector('.timelineFocused');
      if( td ) td.classList.remove('timelineFocused');
      if( !id ) return true;
      var tn = document.getElementById(id);
      if( tn ){
        td = tn.parentElement.nextElementSibling;
        if( td ) {
          td.classList.add('timelineFocused');
          if( scroll ){
            focusScrollToIntoViewTheFossilWay(td);
            //if( td.scrollIntoViewIfNeeded ) td.scrollIntoViewIfNeeded();
            //else td.scrollIntoView(false);
          }
          return true;
        }
      }
      return false;
    }
    function focusCacheInit(){
      var e = document.getElementById('timeline-kbfocus');

        case kTMLB:
        case kVIEW:
        case kDONE: break;
        default: return;
      }
      if( key==kSCRL ){
        var td = document.querySelector('.timelineFocused');
        if( td ) focusScrollToIntoViewTheFossilWay(td);
        return;
      }
      else if( key==kUNTK ){
        var tid = focusTickedId();
        if( tid ){
          var gn = document.getElementById('tln'+tid.slice(1));
          if( gn ) gn.click();

          var ri = timelineGetRowInfo(id);
          if( ri ){
            var hh = encodeURIComponent(ri.hash.slice(0,ri.hashdigits));
            var br = encodeURIComponent(ri.branch);
            var page;
            switch( key ){
              case kTMLN:
                page = '/timeline' + ( ri.filediff ? '?m&cf=' : '?m&c=' ) + hh;
                break;
              case kTMLB:
                page = '/timeline?r=' + br +
                  ( ri.filediff ? '&m&cf=' : '&m&c=' ) + hh;
                break;
              case kVIEW:
                page = '/info/' + hh;
                break;
            }
            var href = ri.baseurl + page;
            if( href!=location.href.slice(-href.length) ){