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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Toolbar\Button;
defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Help\Help;
use Joomla\CMS\Layout\FileLayout;
use Joomla\CMS\Toolbar\ToolbarButton;
/**
* Renders a help popup window button
*
* @since 3.0
*/
class HelpButton extends ToolbarButton
{
/**
* @var string Button type
*/
protected $_name = 'Help';
/**
* Fetches the button HTML code.
*
* @param string $type Unused string.
* @param string $ref The name of the help screen (its key reference).
* @param boolean $com Use the help file in the component directory.
* @param string $override Use this URL instead of any other.
* @param string $component Name of component to get Help (null for current component)
*
* @return string
*
* @since 3.0
*/
public function fetchButton($type = 'Help', $ref = '', $com = false, $override = null, $component = null)
{
// Store all data to the options array for use with JLayout
$options = array();
$options['text'] = \JText::_('JTOOLBAR_HELP');
$options['doTask'] = $this->_getCommand($ref, $com, $override, $component);
// Instantiate a new JLayoutFile instance and render the layout
$layout = new FileLayout('joomla.toolbar.help');
return $layout->render($options);
}
/**
* Get the button id
*
* Redefined from JButton class
*
* @return string Button CSS Id
*
* @since 3.0
*/
public function fetchId()
{
return $this->_parent->getName() . '-help';
}
/**
* Get the JavaScript command for the button
*
* @param string $ref The name of the help screen (its key reference).
* @param boolean $com Use the help file in the component directory.
* @param string $override Use this URL instead of any other.
* @param string $component Name of component to get Help (null for current component)
*
* @return string JavaScript command string
*
* @since 3.0
*/
protected function _getCommand($ref, $com, $override, $component)
{
// Get Help URL
$url = Help::createUrl($ref, $com, $override, $component);
$url = json_encode(htmlspecialchars($url, ENT_QUOTES), JSON_HEX_APOS);
$url = substr($url, 1, -1);
$cmd = "Joomla.popupWindow('$url', '" . \JText::_('JHELP', true) . "', 700, 500, 1)";
return $cmd;
}
}