<?php
    /*********************************************************************************
     * Zurmo is a customer relationship management program developed by
     * Zurmo, Inc. Copyright (C) 2012 Zurmo Inc.
     *
     * Zurmo is free software; you can redistribute it and/or modify it under
     * the terms of the GNU General Public License version 3 as published by the
     * Free Software Foundation with the addition of the following permission added
     * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
     * IN WHICH THE COPYRIGHT IS OWNED BY ZURMO, ZURMO DISCLAIMS THE WARRANTY
     * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
     *
     * Zurmo is distributed in the hope that it will be useful, but WITHOUT
     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
     * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
     * details.
     *
     * You should have received a copy of the GNU General Public License along with
     * this program; if not, see http://www.gnu.org/licenses or write to the Free
     * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     * 02110-1301 USA.
     *
     * You can contact Zurmo, Inc. with a mailing address at 113 McHenry Road Suite 207,
     * Buffalo Grove, IL 60089, USA. or at email address contact@zurmo.com.
     ********************************************************************************/

    /**
     * Given a FilterList model, the metadata is prepared and
     * adapted for a FilterListDataProvider.
     *
     */
    class FilteredListDataProviderMetadataAdapter extends DataProviderMetadataAdapter
    {
        public function __construct($model, $userId, $metadata)
        {
            parent::__construct($model, $userId, $metadata);
            assert('$model instanceof FilteredList');
            assert('isset($metadata["clauses"])');
            assert('isset($metadata["structure"])');
        }

        /**
         * Takes into account special attributes on filteredList model
         * such as filterByCreatedUser which needs to be converted into
         * the metadata.
         */
        public function getAdaptedMetadata()
        {
            $metadata = $this->metadata;
            if ($this->model->filterByCreatedUser)
            {
                $clauseCount = count($metadata['clauses']);
                $metadata['clauses'][($clauseCount + 1)] = array(
                        'attributeName' => 'createdByUser',
                        'operatorType'  => 'equals',
                        'value'         => $this->userId
                );
                if (empty($metadata['structure']))
                {
                    $metadata['structure'] = ($clauseCount + 1);
                }
                else
                {
                    $metadata['structure'] = ($clauseCount + 1) . ' and ( ' . $metadata['structure'] . ' ) ';
                }
            }
            return $metadata;
        }
    }
?>