gnu-social/plugins/PiwikAnalytics/PiwikAnalyticsPlugin.php

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<?php
/**
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* StatusNet, the distributed open-source microblogging tool
*
* Plugin to use Piwik Analytics
*
* PHP version 5
*
* LICENCE: 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 Plugin
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* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @author Tobias Diekershoff <tobias.diekershoff@gmx.net>
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* @copyright 2008 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
*/
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if (!defined('STATUSNET')) {
exit(1);
}
/**
* Plugin to use Piwik Analytics (based on the Google Analytics plugin by Evan)
*
* This plugin will spoot out the correct JavaScript spell to invoke
* Piwik Analytics on a page.
*
* To use this plugin add the following to your config.php
*
* addPlugin('PiwikAnalytics', array('piwikroot' => 'example.com/piwik/',
* 'piwikId' => 'id'));
*
* Replace 'example.com/piwik/' with the URL to your Piwik installation and
* make sure you don't forget the final /.
* Replace 'id' with the ID your statusnet installation has in your Piwik
* analytics setup - for example '8'.
*
*/
class PiwikAnalyticsPlugin extends Plugin
{
/** the base of your Piwik installation */
public $piwikroot = null;
/** the Piwik Id of your statusnet installation */
public $piwikId = null;
/**
* constructor
*
* @param string $root Piwik root URL
* @param string $id Piwik ID of this app
*/
function __construct($root=null, $id=null)
{
$this->piwikroot = $root;
$this->piwikId = $id;
parent::__construct();
}
/**
* Called when all scripts have been shown
*
* @param Action $action Current action
*
* @return boolean ignored
*/
function onEndShowScripts($action)
{
// Slight modification to the default code.
// Loading the piwik.js file from a <script> created in a document.write
// meant that the browser had no way to preload it, ensuring that its
// loading will be synchronous, blocking further page rendering.
//
// User-agents understand protocol-relative links, so instead of the
// URL produced in JS we can just give a universal one. Since it's
// sitting there in the DOM ready to go, the browser can preload the
// file for us and we're less likely to have to wait for it.
$piwikUrl = '//' . $this->piwikroot . 'piwik.js';
$piwikCode = <<<ENDOFPIWIK
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try {
var pkBaseURL = (("https:" == document.location.protocol) ? "https://{$this->piwikroot}" : "http://{$this->piwikroot}");
var piwikTracker = Piwik.getTracker(pkBaseURL + "piwik.php", {$this->piwikId});
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piwikTracker.trackPageView();
piwikTracker.enableLinkTracking();
} catch( err ) {}
ENDOFPIWIK;
// Don't use $action->script() here; it'll try to preface the URL.
$action->element('script', array('type' => 'text/javascript', 'src' => $piwikUrl), ' ');
$action->inlineScript($piwikCode);
return true;
}
function onPluginVersion(&$versions)
{
$versions[] = array('name' => 'PiwikAnalytics',
'version' => STATUSNET_VERSION,
'author' => 'Tobias Diekershoff, Evan Prodromou',
'homepage' => 'http://status.net/wiki/Plugin:Piwik',
'rawdescription' =>
// TRANS: Plugin description.
_m('Use <a href="http://piwik.org/">Piwik</a> Open Source web analytics software.'));
return true;
}
}