AngularJS filter with many fields

filter.js

define(['angular'], function (angular) {
    'use strict';

    /* Filters */

    angular.module('app.filters', [])
        .filter('filterMultiple', ['$filter', function ($filter) {
            return function (items, keyObj) {
                var notFound = true;
                var filterObj = {
                    data: items,
                    filteredData: [],
                    applyFilter: function (obj, key) {
                        var fData = [];
                        if (this.filteredData && this.filteredData.length == 0)
                            this.filteredData = this.data;
                        if (obj) {
                            var fObj = {};
                            if (angular.isString(obj)) {
                                fObj[key] = obj;
                                fData = fData.concat($filter('filter')(this.filteredData, fObj));
                            }
                            if (fData.length > 0) {
                                this.filteredData = fData;
                                notFound = false;
                            }
                        }else{
                            notFound = false;
                        }
                    }
                };

                if (keyObj) {
                    angular.forEach(keyObj, function (obj, key) {
                        filterObj.applyFilter(obj, key);
                    });
                }
                return (notFound) ? [] : filterObj.filteredData;
            }
        }]);
    ;

});

list.html

<div class="form-horizontal">
    <div class="form-group">
        <div class="col-lg-4 has-feedback">
            <input type="text" class="form-control" ng-model="pesquisa" placeholder="Filtro" focus />
            <span class="glyphicon glyphicon-search form-control-feedback"></span>
        </div>
    </div>
</div>

<div class="table-responsive">
    <table class="table table-condensed">
        <thead>
            <tr>
                <th width="2%">#</th>
                <th width="49%">Nome</th>
                <th width="49%">Login</th>
                <th width="30%">Situação</th>
            </tr>
        </thead>
        <tbody>
            <tr ng-repeat="usuario in usuarios | filterMultiple: {nome:pesquisa , login:pesquisa , statusFormatado:pesquisa} | orderBy: 'nome'">
                <td>
                    <a href="#{{currentPath}}/{{usuario.id}}" class="btn btn-default btn-xs">
                        <span class="glyphicon glyphicon-pencil"></span>
                    </a>
                </td>
                <td>{{ usuario.nome | uppercase }}</td>
                <td>{{ usuario.login | lowercase }}</td>
                <td>{{ usuario.statusFormatado | lowercase }}</td>
            </tr>
            <tr ng-show="(usuarios | filterMultiple: {nome:pesquisa , login:pesquisa , statusFormatado:pesquisa}).length == 0">
                <td colspan="4">
                    <span>Nenhum registro encontrado!</span>
                </td>
            </tr>
        </tbody>
    </table>
</div>