F.filterTimeout = null;

    F.updateFilter  = function() {

        // Reset timeout

        F.filterTimeout = null;

        var obsolete = [];

        var req = $q_filter_field.val().toLowerCase();

        var l = nodes.length;

        var i;

        var showing = 0;

        for (i=0; i<l; i++ ){

            var n = nodes[i];

            var target_element = display_element(n)

            if(req && n.innerHTML.toLowerCase().indexOf(req) == -1){

                $(target_element).hide();

            }

            else{

                $(target_element).show();

                showing += 1;

            }

        }

        $('#repo_count').html(showing); /* FIXME: don't hardcode */

    }

};

/* 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){

    $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('.overlay');

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

    $form.submit(function(e){

        e.preventDefault();

        if(lineno === undefined){

            alert('missing line !');

            return

        }

        if(f_path === undefined){

            alert('missing file path !');

            return

        }

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

        if(text == ""){

            return

        }

        if ($overlay.hasClass('overlay')){

            $overlay.css('width', $inlineform.offsetWidth + 'px');

            $overlay.css('height', $inlineform.offsetHeight + 'px');

        }

        $overlay.addClass('submitting');

        var success = function(o){

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

            $form.remove();

            var json_data = JSON.parse(o.responseText);

            _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();

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

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

        var post_data = {'text': text};

        ajaxPOST(url, post_data, function(o){

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

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

        })

    })

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

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

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

    })

    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'];

    $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));

    // 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

    $after_tr.after(_table_tr('inline-comments', html));

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

    _placeAddButton($line_tr);

}

/**

 * make a single inline comment and place it inside

 */

var _renderInlineComment = function(json_data){

    var html =  json_data['rendered_text'];

    var lineno = json_data['line_no'];

    var target_id = json_data['target_id'];

    _placeInline(target_id, lineno, html);

}

/**

 * Iterates over all the inlines, and places them inside proper blocks of data

 */

var renderInlineComments = function(file_comments){

    for (f in file_comments){

        // holding all comments for a FILE

        var box = file_comments[f];

        var target_id = $(box).attr('target_id');

        // actual comments with line numbers

        var comments = box.children;

        for(var i=0; i<comments.length; i++){

            var data = {

                'rendered_text': comments[i].outerHTML,

                'line_no': $(comments[i]).attr('line'),

                'target_id': target_id

            }

            _renderInlineComment(data);

        }

    }

}

/* activate files.html stuff */

var fileBrowserListeners = function(current_url, node_list_url, url_base){

    var current_url_branch = "?branch=__BRANCH__";

    $('#stay_at_branch').on('click',function(e){

        if(e.currentTarget.checked){

            var uri = current_url_branch;

            uri = uri.replace('__BRANCH__',e.currentTarget.value);

            window.location = uri;

        }

        else{

            window.location = current_url;

        }

    })

    var $node_filter = $('#node_filter');

    var filterTimeout = null;

    var nodes = null;

    var initFilter = function(){

        $('#node_filter_box_loading').show();

        $('#search_activate_id').hide();

        $('#add_node_id').hide();

        YUC.initHeader('X-PARTIAL-XHR',true);

        YUC.asyncRequest('GET', node_list_url, {

            success:function(o){

                nodes = JSON.parse(o.responseText).nodes;

                $('#node_filter_box_loading').hide();

                $('#node_filter_box').show();

                $node_filter.focus();

                if($node_filter.hasClass('init')){

                    $node_filter.val('');

                    $node_filter.removeClass('init');

                }

            },

            failure:function(o){

                console.log('failed to load');

            }

        },null);

    }

    var updateFilter = function(e) {

        return function(){

            // Reset timeout

            filterTimeout = null;

            var query = e.currentTarget.value.toLowerCase();

            var match = [];

            var matches = 0;

            var matches_max = 20;

            if (query != ""){

                for(var i=0;i<nodes.length;i++){

                    var pos = nodes[i].name.toLowerCase().indexOf(query)

                    if(query && pos != -1){

                        matches++

                        //show only certain amount to not kill browser

                        if (matches > matches_max){

                            break;

                        }

                        var n = nodes[i].name;

                        var t = nodes[i].type;

                        var n_hl = n.substring(0,pos)

                          +"<b>{0}</b>".format(n.substring(pos,pos+query.length))

                          +n.substring(pos+query.length)

                        var new_url = url_base.replace('__FPATH__',n);

                        match.push('<tr><td><a class="browser-{0}" href="{1}">{2}</a></td><td colspan="5"></td></tr>'.format(t,new_url,n_hl));

                    }

                    if(match.length >= matches_max){

                        match.push('<tr><td>{0}</td><td colspan="5"></td></tr>'.format(_TM['Search truncated']));

                        break;

                    }

                }

            }

            if(query != ""){

                $('#tbody').hide();

                $('#tbody_filtered').show();

                if (match.length==0){

                  match.push('<tr><td>{0}</td><td colspan="5"></td></tr>'.format(_TM['No matching files']));

                }

                $('#tbody_filtered').html(match.join(""));

            }

            else{

                $('#tbody').show();

                $('#tbody_filtered').hide();

            }

        }

    };

    $('#filter_activate').click(function(){

            initFilter();

        });

    $node_filter.click(function(){

            if($node_filter.hasClass('init')){

                $node_filter.val('');

                $node_filter.removeClass('init');

            }

        });

    $node_filter.keyup(function(e){

            clearTimeout(filterTimeout);

            filterTimeout = setTimeout(updateFilter(e),600);

        });

};

var initCodeMirror = function(textarea_id, resetUrl){

    var myCodeMirror = CodeMirror.fromTextArea($('#' + textarea_id)[0], {

            mode: "null",

            lineNumbers: true,

            indentUnit: 4,

            autofocus: true,

        });

    $('#reset').click(function(e){

            window.location=resetUrl;

        });

    $('#file_enable').click(function(){

            $('#editor_container').show();

            $('#upload_file_container').hide();

            $('#filename_container').show();

            $('#set_mode_header').show();

        });

    $('#upload_file_enable').click(function(){

            $('#editor_container').hide();

            $('#upload_file_container').show();

            $('#filename_container').hide();

            $('#set_mode_header').hide();

        });

    return myCodeMirror

};