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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2018 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\Toolbar\ToolbarButton;

/**
 * Render dropdown buttons.
 *
 * @method self toggleSplit(bool $value)
 * @method self toggleButtonClass(string $value)
 * @method bool getToggleSplit()
 * @method string getToggleButtonClass()
 *
 * @since  4.0.0
 */
class DropdownButton extends AbstractGroupButton
{
	/**
	 * Property layout.
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected $layout = 'joomla.toolbar.dropdown';

/**
	 * Prepare options for this button.
	 *
	 * @param   array  $options  The options about this button.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 * @throws  \Exception
	 */
	protected function prepareOptions(array &$options)
	{
		parent::prepareOptions($options);

$childToolbar = $this->getChildToolbar();
		$options['hasButtons'] = \count($childToolbar->getItems()) > 0;
		$buttons = $childToolbar->getItems();

if ($options['hasButtons'])
		{
			if ($this->getOption('toggleSplit', true))
			{
				/** @var ToolbarButton $button */
				$button = array_shift($buttons);

$childToolbar->setItems($buttons);

$options['button'] = $button->render();
				$options['caretClass'] = $options['toggleButtonClass'] ?? $button->getButtonClass();
				$options['dropdownItems'] = $childToolbar->render(['is_child' => true]);
			}
			else
			{
				$options['dropdownItems'] = $childToolbar->render(['is_child' => true]);

$button = new BasicButton($this->getName(), $this->getText(), $options);

$options['button'] = $button
					->setParent($this->parent)
					->buttonClass($button->getButtonClass() . ' dropdown-toggle')
					->attributes(
						[
							'data-bs-toggle' => 'dropdown',
							'data-bs-target' => '#' . $this->fetchId(),
							'aria-haspopup' => 'true',
							'aria-expanded' => 'false',
						]
					)
					->render();
			}
		}
	}

/**
	 * Render button HTML.
	 *
	 * @param   array  $options  The button options.
	 *
	 * @return  string  The button HTML.
	 *
	 * @since  4.0.0
	 */
	protected function renderButton(array &$options): string
	{
		return parent::renderButton($options);
	}

/**
	 * Get the button CSS Id.
	 *
	 * @return  string  Button CSS Id
	 *
	 * @since   4.0.0
	 */
	protected function fetchId()
	{
		return $this->parent->getName() . '-dropdown-' . $this->getName();
	}

/**
	 * Method to configure available option accessors.
	 *
	 * @return  array
	 *
	 * @since   4.0.0
	 */
	protected static function getAccessors(): array
	{
		return array_merge(
			parent::getAccessors(),
			[
				'toggleSplit',
				'toggleButtonClass',
			]
		);
	}
}