if (success !== undefined && success) {

                    success();

                }

            })

        .fail(function(jqXHR, textStatus, errorThrown) {

                if (textStatus == "abort")

                    return;

                console.log('Ajax failure: ' + textStatus);

                $target.html('<span class="error_red">ERROR: {0}</span>'.format(textStatus));

                $target.css('opacity','1.0');

            })

        ;

};

var ajaxGET = function(url,success) {

    return $.ajax({url: url, headers: {'X-PARTIAL-XHR': '1'}, cache: false})

        .done(success)

        .fail(function(jqXHR, textStatus, errorThrown) {

                if (textStatus == "abort")

                    return;

                alert("Ajax GET error: " + textStatus);

        })

        ;

};

var ajaxPOST = function(url,postData,success) {

    var postData = _toQueryString(postData);

    return $.ajax({url: url, data: postData, type: 'POST', headers: {'X-PARTIAL-XHR': '1'}, cache: false})

        .done(success)

        .fail(function(jqXHR, textStatus, errorThrown) {

                if (textStatus == "abort")

                    return;

                alert("Ajax POST error: " + textStatus);

            })

        ;

};

/**

 * activate .show_more links

 * the .show_more must have an id that is the the id of an element to hide prefixed with _

 * the parentnode will be displayed

 */

var show_more_event = function(){

    $('.show_more').click(function(e){

        var el = e.currentTarget;

        $('#' + el.id.substring(1)).hide();

        $(el.parentNode).show();

    });

};

/**

 * activate .lazy-cs mouseover for showing changeset tooltip

 */

var show_changeset_tooltip = function(){

    $('.lazy-cs').mouseover(function(e){

        var $target = $(e.currentTarget);

        var rid = $target.attr('raw_id');

        var repo_name = $target.attr('repo_name');

        if(rid && !$target.hasClass('tooltip')){

            _show_tooltip(e, _TM['loading ...']);

            var url = pyroutes.url('changeset_info', {"repo_name": repo_name, "revision": rid});

            ajaxGET(url, function(json){

                    $target.addClass('tooltip')

                    _show_tooltip(e, json['message']);

                    _activate_tooltip($target);

                });

        }

    });

};

var _onSuccessFollow = function(target){

    var $target = $(target);

    var $f_cnt = $('#current_followers_count');

    if($target.hasClass('follow')){

        $target.attr('class', 'following');

        $target.attr('title', _TM['Stop following this repository']);

        if($f_cnt.html()){

            var cnt = Number($f_cnt.html())+1;

            $f_cnt.html(cnt);

        }

    }

    else{

        $target.attr('class', 'follow');

        $target.attr('title', _TM['Start following this repository']);

        if($f_cnt.html()){

            var cnt = Number($f_cnt.html())-1;

            $f_cnt.html(cnt);

        }

    }

}

var toggleFollowingRepo = function(target, follows_repo_id, token, user_id){

    var args = 'follows_repo_id=' + follows_repo_id;

    args += '&auth_token=' + token;

    if(user_id != undefined){

        args +="&user_id=" + user_id;

    }

    $.post(TOGGLE_FOLLOW_URL, args, function(data){

            _onSuccessFollow(target);

        });

    return false;

};

var showRepoSize = function(target, repo_name, token){

    var args = 'auth_token=' + token;

    if(!$("#" + target).hasClass('loaded')){

        $("#" + target).html(_TM['Loading ...']);

        var url = pyroutes.url('repo_size', {"repo_name":repo_name});

        $.post(url, args, function(data) {

            $("#" + target).html(data);

            $("#" + target).addClass('loaded');

        });

    }

    return false;

};

/**

 * tooltips

 */

var tooltip_activate = function(){

    $(document).ready(_init_tooltip);

};

var _activate_tooltip = function($tt){

    $tt.mouseover(_show_tooltip);

    $tt.mousemove(_move_tooltip);

    $tt.mouseout(_close_tooltip);

};

var _init_tooltip = function(){

    var $tipBox = $('#tip-box');

    if(!$tipBox.length){

        $tipBox = $('<div id="tip-box"></div>')

        $(document.body).append($tipBox);

    }

    $tipBox.hide();

    $tipBox.css('position', 'absolute');

    $tipBox.css('max-width', '600px');

    _activate_tooltip($('.tooltip'));

};

var _show_tooltip = function(e, tipText){

    e.stopImmediatePropagation();

    var el = e.currentTarget;

    if(tipText){

        // just use it

    } else if(el.tagName.toLowerCase() === 'img'){

        tipText = el.alt ? el.alt : '';

    } else {

        tipText = el.title ? el.title : '';

    }

    if(tipText !== ''){

        // save org title

        $(el).attr('tt_title', tipText);

        // reset title to not show org tooltips

        $(el).attr('title', '');

        var $tipBox = $('#tip-box');

        $tipBox.html(tipText);

        $tipBox.css('display', 'block');

    }

};

var _move_tooltip = function(e){

    e.stopImmediatePropagation();

    var $tipBox = $('#tip-box');

    $tipBox.css('top', (e.pageY + 15) + 'px');

    $tipBox.css('left', (e.pageX + 15) + 'px');

};

var _close_tooltip = function(e){

    e.stopImmediatePropagation();

    var $tipBox = $('#tip-box');

    $tipBox.hide();

    var el = e.currentTarget;

    $(el).attr('title', $(el).attr('tt_title'));

};

/**

 * Quick filter widget

 *

 * @param target: filter input target

 * @param nodes: list of nodes in html we want to filter.

 * @param display_element function that takes current node from nodes and

 *    does hide or show based on the node

 */

        F.filterTimeout = null;

    }

/* return jQuery expression with a tr with body in 3rd column and class cls and id named after the body */

var _table_tr = function(cls, body){

    // like: <div class="comment" id="comment-8" line="o92"><div class="comment-wrapp">...

    // except new inlines which are different ...

    var comment_id = ($(body).attr('id') || 'comment-new').split('comment-')[1];

    var tr_id = 'comment-tr-{0}'.format(comment_id);

    return $(('<tr id="{0}" class="{1}">'+

                  '<td class="lineno-inline new-inline"></td>'+

                  '<td class="lineno-inline old-inline"></td>'+

                  '<td>{2}</td>'+

                 '</tr>').format(tr_id, cls, body));

};

/** return jQuery expression with new inline form based on template **/

var _createInlineForm = function(parent_tr, f_path, line) {

    var $tmpl = $('#comment-inline-form-template').html().format(f_path, line);

    var $form = _table_tr('comment-form-inline', $tmpl)

    // create event for hide button

    $form.find('.hide-inline-form').click(function(e) {

        var newtr = e.currentTarget.parentNode.parentNode.parentNode.parentNode.parentNode;

        if($(newtr).next().hasClass('inline-comments-button')){

            $(newtr).next().show();

        }

        $(newtr).remove();

        $(parent_tr).removeClass('form-open');

        $(parent_tr).removeClass('hl-comment');

    });

    return $form

};

/**

 * Inject inline comment for an given TR. This tr should always be a .line .

 * The form will be inject after any comments.

 */

var injectInlineForm = function(tr){

    var $tr = $(tr);

    if(!$tr.hasClass('line')){

        return

    }

    var submit_url = AJAX_COMMENT_URL;

    var $td = $tr.find('.code');

    if($tr.hasClass('form-open') || $tr.hasClass('context') || $td.hasClass('no-comment')){

        return

    }

    $tr.addClass('form-open hl-comment');

    var $node = $tr.parent().parent().parent().find('.full_f_path');

    var f_path = $node.attr('path');

    var lineno = _getLineNo(tr);

    var $form = _createInlineForm(tr, f_path, lineno, submit_url);

    var $parent = $tr;

    while ($parent.next().hasClass('inline-comments')){

        var $parent = $parent.next();

    }

    $form.insertAfter($parent);

    var $overlay = $form.find('.submitting-overlay');

    var $inlineform = $form.find('.inline-form');

    $form.submit(function(e){

        e.preventDefault();

        if(lineno === undefined){

            alert('Error submitting, line ' + lineno + ' not found.');

            return

        }

        if(f_path === undefined){

            alert('Error submitting, file path ' + f_path + ' not found.');

            return

        }

        var text = $('#text_'+lineno).val();

        if(text == ""){

            return

        }

        $overlay.show();

        var success = function(json_data){

            $tr.removeClass('form-open');

            $form.remove();

            _renderInlineComment(json_data);

        };

        var postData = {

                'text': text,

                'f_path': f_path,

                'line': lineno

        };

        ajaxPOST(submit_url, postData, success);

    });

    $('#preview-btn_'+lineno).click(function(e){

        var text = $('#text_'+lineno).val();

        if(!text){

            return

        }

        $('#preview-box_'+lineno).addClass('unloaded');

        $('#preview-box_'+lineno).html(_TM['Loading ...']);

        $('#edit-container_'+lineno).hide();

        $('#edit-btn_'+lineno).show();

        $('#preview-container_'+lineno).show();

        $('#preview-btn_'+lineno).hide();

        var url = pyroutes.url('changeset_comment_preview', {'repo_name': REPO_NAME});

        var post_data = {'text': text};

        ajaxPOST(url, post_data, function(html){

            $('#preview-box_'+lineno).html(html);

            $('#preview-box_'+lineno).removeClass('unloaded');

        })

    })

    $('#edit-btn_'+lineno).click(function(e){

        $('#edit-container_'+lineno).show();

        $('#edit-btn_'+lineno).hide();

        $('#preview-container_'+lineno).hide();

        $('#preview-btn_'+lineno).show();

    })

    setTimeout(function(){

        // callbacks

        tooltip_activate();

        MentionsAutoComplete('text_'+lineno, 'mentions_container_'+lineno,

                             _USERS_AC_DATA, _GROUPS_AC_DATA);

        $('#text_'+lineno).focus();

    },10)

};

var deleteComment = function(comment_id){

    var url = AJAX_COMMENT_DELETE_URL.replace('__COMMENT_ID__',comment_id);

    var postData = {'_method':'delete'};

    var success = function(o){

        var $deleted = $('#comment-tr-'+comment_id);

        var $prev = $deleted.prev('tr');

        $deleted.remove();

        _placeAddButton($prev);

    }

    ajaxPOST(url,postData,success);

}

var _getLineNo = function(tr) {

    var line;

    var o = $(tr).children()[0].id.split('_');

    var n = $(tr).children()[1].id.split('_');

    if (n.length >= 2) {

        line = n[n.length-1];

    } else if (o.length >= 2) {

        line = o[o.length-1];

    }

    return line

};

var _placeAddButton = function($line_tr){

    var $tr = $line_tr;

    while ($tr.next().hasClass('inline-comments')){

        $tr.find('.add-comment').remove();

        $tr = $tr.next();

    }

    $tr.find('.add-comment').remove();

    var label = TRANSLATION_MAP['Add Another Comment'];

    var $html_el = $('<div class="add-comment"><span class="btn btn-mini">{0}</span></div>'.format(label));

    $html_el.click(function(e) {

        injectInlineForm($line_tr);

    });

    $tr.find('.comment').after($html_el);

};

/**

 * Places the inline comment into the changeset block in proper line position

 */

var _placeInline = function(target_id, lineno, html){

    var $td = $("#{0}_{1}".format(target_id, lineno));

    if (!$td.length){

        return false;

    }

    // check if there are comments already !

    var $line_tr = $td.parent(); // the tr

    var $after_tr = $line_tr;

    while ($after_tr.next().hasClass('inline-comments')){

        $after_tr = $after_tr.next();

    }

    // put in the comment at the bottom

    var $tr = _table_tr('inline-comments', html)

    $tr.find('div.comment').addClass('inline-comment');

    $after_tr.after($tr);

    // scan nodes, and attach add button to last one

    _placeAddButton($line_tr);

    return true;