var ypjax_links = function(){

    $('.ypjax-link').click(function(e){

        //don't do ypjax on middle click

        if(e.which == 2 || !History.enabled){

            return true;

        }

        var el = e.currentTarget;

        var url = el.href;

        var _base_url = '${h.url("files_home",repo_name=c.repo_name,revision='',f_path='')}';

        _base_url = _base_url.replace('//','/');

        //extract rev and the f_path from url.

        parts = url.split(_base_url);

        if(parts.length != 2){

            return false;

        }

        var parts2 = parts[1].split('/');

        var rev = parts2.shift(); // pop the first element which is the revision

        var f_path = parts2.join('/');

        //page title - make this consistent with title mako block above

        var title = "${_('%s Files') % c.repo_name}" + " \u00B7 " + (f_path || '/') + " \u00B7 " + "${c.site_name}";

        var _node_list_url = node_list_url.replace('__REV__',rev).replace('__FPATH__', f_path);

        var _url_base = url_base.replace('__REV__',rev);

        // Change our States and save some data for handling events

        var data = {url:url,title:title, url_base:_url_base,

                    node_list_url:_node_list_url, rev:rev, f_path:f_path};

        History.pushState(data, title, url);

        //now we're sure that we can do ypjax things

        e.preventDefault();

        return false;

    });

}

// callbacks needed to process the ypjax filebrowser

var callbacks = function(State){

    ypjax_links();

    tooltip_activate();

    if(State !== undefined){

        var _f_path = State.data.f_path;

        var _rev = State.data.rev;

        fileBrowserListeners(State.url, State.data.node_list_url, State.data.url_base);

        // Inform Google Analytics of the change

        if ( typeof window.pageTracker !== 'undefined' ) {

            window.pageTracker._trackPageview(State.url);

        }

    }

    function highlight_lines(lines){

        for(pos in lines){

          $('#L'+lines[pos]).css('background-color','#FFFFBE');

        }

    }

    page_highlights = location.href.substring(location.href.indexOf('#')+1).split('L');

    if (page_highlights.length == 2){

       highlight_ranges  = page_highlights[1].split(",");

       var h_lines = [];

       for (pos in highlight_ranges){

            var _range = highlight_ranges[pos].split('-');

            if(_range.length == 2){

                var start = parseInt(_range[0]);

                var end = parseInt(_range[1]);

                if (start < end){

                    for(var i=start;i<=end;i++){

                        h_lines.push(i);

                    }

                }

            }

            else{

                h_lines.push(parseInt(highlight_ranges[pos]));

            }

      }

      highlight_lines(h_lines);

      $('#L'+h_lines[0]).each(function(){

          this.scrollIntoView();

      });

    }

    // select code link event

    $('#hlcode').mouseup(getSelectionLink);

    // history select field

    var cache = {};

    $("#diff1").select2({

        placeholder: _TM['Select changeset'],