gnu-social/lib/microapp.php

<?php
/**
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2011, StatusNet, Inc.
 *
 * Superclass for microapp plugin
 * 
 * PHP version 5
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @category  Microapp
 * @package   StatusNet
 * @author    Evan Prodromou <evan@status.net>
 * @copyright 2011 StatusNet, Inc.
 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
 * @link      http://status.net/
 */

if (!defined('STATUSNET')) {
    // This check helps protect against security problems;
    // your code file can't be executed directly from the web.
    exit(1);
}

/**
 * Superclass for microapp plugins
 *
 * This class lets you define micro-applications with different kinds of activities.
 *
 * The applications work more-or-less like other 
 * 
 * @category  Microapp
 * @package   StatusNet
 * @author    Evan Prodromou <evan@status.net>
 * @copyright 2011 StatusNet, Inc.
 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
 * @link      http://status.net/
 */

abstract class MicroAppPlugin extends Plugin
{
    abstract function types();
    abstract function saveNoticeFromActivity($activity);
    abstract function activityFromNotice($notice);
    abstract function showNotice($notice, $out);
    abstract function entryForm();

    function isMyNotice($notice) {
        $types = $this->types();
        return in_array($notice->object_type, $types);
    }

    function isMyActivity($activity) {
        $types = $this->types();
        return (count($activity->objects) == 1 &&
                in_array($activity->objects[0]->type, $types));
    }
}