gnu-social/plugins/ActivityVerb/lib/activityverbhandlerplugin.php

<?php
/*
 * GNU Social - a federating social network
 * Copyright (C) 2014, Free Software Foundation, Inc.
 *
 * 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/>.
 */

if (!defined('GNUSOCIAL')) { exit(1); }

/**
 * @package     Activity
 * @maintainer  Mikael Nordfeldth <mmn@hethane.se>
 */
abstract class ActivityVerbHandlerPlugin extends ActivityHandlerPlugin
{
    public function onActivityVerbTitle(ManagedAction $action, $verb, Notice $target, Profile $scoped, &$title)
    {
        if (!$this->isMyVerb($verb)) {
            return true;
        }

        $title = $this->getActionTitle($action, $verb, $target, $scoped);
        return false;
    }
    abstract protected function getActionTitle(ManagedAction $action, $verb, Notice $target, Profile $scoped);

    public function onActivityVerbShowContent(ManagedAction $action, $verb, Notice $target, Profile $scoped)
    {
        if (!$this->isMyVerb($verb)) {
            return true;
        }

        return $this->showActionContent($action, $verb, $target, $scoped);
    }
    protected function showActionContent(ManagedAction $action, $verb, Notice $target, Profile $scoped)
    {
        if (!GNUsocial::isAjax()) {
            $nl = new NoticeListItem($target, $action, array('options'=>false, 'attachments'=>false,
                                                             'item_tag'=>'div', 'id_prefix'=>'fave'));
            $nl->show();
        }

        $form = $this->getActivityForm($action, $verb, $target, $scoped);
        $form->show();

        return false;
    }

    public function onActivityVerbDoPreparation(ManagedAction $action, $verb, Notice $target, Profile $scoped)
    {
        if (!$this->isMyVerb($verb)) {
            return true;
        }

        return $this->doActionPreparation($action, $verb, $target, $scoped);
    }
    abstract protected function doActionPreparation(ManagedAction $action, $verb, Notice $target, Profile $scoped);

    public function onActivityVerbDoPost(ManagedAction $action, $verb, Notice $target, Profile $scoped)
    {
        if (!$this->isMyVerb($verb)) {
            return true;
        }

        return $this->doActionPost($action, $verb, $target, $scoped);
    }
    abstract protected function doActionPost(ManagedAction $action, $verb, Notice $target, Profile $scoped);

    abstract protected function getActivityForm(ManagedAction $action, $verb, Notice $target, Profile $scoped);
}