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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, 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/>.
*/
/**
* @package ShareNoticePlugin
* @maintainer Brion Vibber <brion@status.net>
*/
if (!defined('STATUSNET')) { exit(1); }
class ShareNoticePlugin extends Plugin
{
public $targets = array(
array('Twitter'),
array('Facebook'),
array('StatusNet', array('baseurl' => 'http://identi.ca'))
);
function onEndShowStatusNetStyles($action) {
$action->cssLink('plugins/ShareNotice/css/sharenotice.css');
return true;
}
function onStartShowNoticeItem($item)
{
$notice = $item->notice;
$out = $item->out;
$out->elementStart('ul', array('class' => 'notice-share'));
foreach ($this->targets as $data) {
$type = $data[0];
$args = (count($data) > 1) ? $data[1] : array();
$target = $this->getShareTarget($type, $notice, $args);
$this->showShareTarget($out, $target);
}
$out->elementEnd('ul');
}
private function getShareTarget($type, $notice, $args)
{
$class = ucfirst($type) . 'ShareTarget';
return new $class($notice, $args);
}
private function showShareTarget(HTMLOutputter $out, NoticeShareTarget $target)
{
$class = $target->getClass();
$text = $target->getText();
$url = $target->targetUrl();
$out->elementStart('li', array('class' => 'notice-share-' . $class));
$out->elementStart('a', array(
'href' => $url,
'title' => $text,
'target' => '_blank'
));
$out->element('span', array(), $text);
$out->elementEnd('a');
$out->elementEnd('li');
}
}
abstract class NoticeShareTarget
{
protected $notice;
public function __construct($notice)
{
$this->notice = $notice;
}
public abstract function getClass();
public abstract function getText();
public abstract function targetUrl();
}
abstract class GenericNoticeShareTarget extends NoticeShareTarget
{
protected function maxLength()
{
return 140; // typical
}
protected function statusText()
{
// TRANS: Leave this message unchanged.
$pattern = _m('"%s"');
$url = $this->notice->bestUrl();
$suffix = ' ' . $url;
$room = $this->maxLength() - mb_strlen($suffix) - (mb_strlen($pattern) - mb_strlen('%s'));
$content = $this->notice->content;
if (mb_strlen($content) > $room) {
$content = mb_substr($content, 0, $room - 1) . '…';
}
return sprintf($pattern, $content) . $suffix;
}
}
class TwitterShareTarget extends GenericNoticeShareTarget
{
public function getClass()
{
return 'twitter';
}
public function getText()
{
// TRANS: Tooltip for image to share a notice on Twitter.
return _m('Share on Twitter');
}
public function targetUrl()
{
$args = array(
'status' => $this->statusText()
);
return 'http://twitter.com/home?' .
http_build_query($args, null, '&');
}
}
class StatusNetShareTarget extends GenericNoticeShareTarget
{
protected $baseurl;
public function __construct($notice, $args)
{
parent::__construct($notice);
$this->baseurl = $args['baseurl'];
}
public function getClass()
{
return 'statusnet';
}
public function getText()
{
$host = parse_url($this->baseurl, PHP_URL_HOST);
// TRANS: Tooltip for image to share a notice on another platform (other than Twitter or Facebook).
// TRANS: %s is a host name.
return sprintf(_m('Share on %s'), $host);
}
public function targetUrl()
{
$args = array(
'status_textarea' => $this->statusText()
);
return $this->baseurl . '/notice/new?' .
http_build_query($args, null, '&');
}
}
class FacebookShareTarget extends NoticeShareTarget
{
public function getClass()
{
return 'facebook';
}
public function getText()
{
// TRANS: Tooltip for image to share a notice on Facebook.
return _m('Share on Facebook');
}
public function targetUrl()
{
$args = array(
'u' => $this->notice->bestUrl(),
// TRANS: %s is notice content that is shared on Twitter, Facebook or another platform.
't' => sprintf(_m('"%s"'), $this->notice->content),
);
return 'http://www.facebook.com/sharer.php?' .
http_build_query($args, null, '&');
}
/**
* Provide plugin version information.
*
* This data is used when showing the version page.
*
* @param array &$versions array of version data arrays; see EVENTS.txt
*
* @return boolean hook value
*/
function onPluginVersion(&$versions)
{
$url = 'http://status.net/wiki/Plugin:ShareNotice';
$versions[] = array('name' => 'ShareNotice',
'version' => STATUSNET_VERSION,
'author' => 'Brion Vibber',
'homepage' => $url,
'rawdescription' =>
// TRANS: Plugin description.
_m('This plugin allows sharing of notices to Twitter, Facebook and other platforms.'));
return true;
}
}
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