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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;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Layout\FileLayout;
use Joomla\CMS\Log\Log;
use Joomla\CMS\Toolbar\Button\BasicButton;
use Joomla\CMS\Toolbar\Button\ConfirmButton;
use Joomla\CMS\Toolbar\Button\CustomButton;
use Joomla\CMS\Toolbar\Button\DropdownButton;
use Joomla\CMS\Toolbar\Button\HelpButton;
use Joomla\CMS\Toolbar\Button\LinkButton;
use Joomla\CMS\Toolbar\Button\PopupButton;
use Joomla\CMS\Toolbar\Button\SeparatorButton;
use Joomla\CMS\Toolbar\Button\StandardButton;

/**
 * ToolBar handler
 *
 * @method  StandardButton  standardButton(string $name = '', string $text = '', string $task = '')
 * @method  SeparatorButton  separatorButton(string $name = '', string $text = '', string $task = '')
 * @method  PopupButton  popupButton(string $name = '', string $text = '', string $task = '')
 * @method  LinkButton  linkButton(string $name = '', string $text = '', string $task = '')
 * @method  HelpButton  helpButton(string $name = '', string $text = '', string $task = '')
 * @method  CustomButton  customButton(string $name = '', string $text = '', string $task = '')
 * @method  ConfirmButton  confirmButton(string $name = '', string $text = '', string $task = '')
 * @method  BasicButton  basicButton(string $name = '', string $text = '', string $task = '')
 * @method  DropdownButton  dropdownButton(string $name = '', string $text = '', string $task = '')
 *
 * @since  1.5
 */
class Toolbar
{
	use CoreButtonsTrait;

/**
	 * Toolbar name
	 *
	 * @var    string
	 * @since  1.5
	 */
	protected $_name = '';

/**
	 * Toolbar array
	 *
	 * @var    array
	 * @since  1.5
	 */
	protected $_bar = [];

/**
	 * Directories, where button types can be stored.
	 *
	 * @var    array
	 * @since  1.5
	 */
	protected $_buttonPath = [];

/**
	 * Stores the singleton instances of various toolbar.
	 *
	 * @var    Toolbar[]
	 * @since  2.5
	 */
	protected static $instances = array();

/**
	 * Factory for creating Toolbar API objects
	 *
	 * @var    ToolbarFactoryInterface
	 * @since  4.0.0
	 */
	protected $factory;

/**
	 * Constructor
	 *
	 * @param   string                   $name     The toolbar name.
	 * @param   ToolbarFactoryInterface  $factory  The toolbar factory.
	 *
	 * @since   1.5
	 */
	public function __construct($name = 'toolbar', ToolbarFactoryInterface $factory = null)
	{
		$this->_name = $name;

// At 5.0, require the factory to be injected
		if (!$factory)
		{
			Log::add(
				sprintf(
					'As of Joomla! 5.0, a %1$s must be provided to a %2$s object when creating it.',
					ToolbarFactoryInterface::class,
					\get_class($this)
				),
				Log::WARNING,
				'deprecated'
			);

$factory = new ContainerAwareToolbarFactory;
			$factory->setContainer(Factory::getContainer());
		}

$this->setFactory($factory);

// Set base path to find buttons.
		$this->_buttonPath[] = __DIR__ . '/Button';
	}

/**
	 * Returns the global Toolbar object, only creating it if it doesn't already exist.
	 *
	 * @param   string  $name  The name of the toolbar.
	 *
	 * @return  Toolbar  The Toolbar object.
	 *
	 * @since       1.5
	 * @deprecated  5.0 Use the ToolbarFactoryInterface instead
	 *
	 * @throws \Joomla\DI\Exception\KeyNotFoundException
	 */
	public static function getInstance($name = 'toolbar')
	{
		if (empty(self::$instances[$name]))
		{
			self::$instances[$name] = Factory::getContainer()->get(ToolbarFactoryInterface::class)->createToolbar($name);
		}

return self::$instances[$name];
	}

/**
	 * Set the factory instance
	 *
	 * @param   ToolbarFactoryInterface  $factory  The factory instance
	 *
	 * @return  $this
	 *
	 * @since   4.0.0
	 */
	public function setFactory(ToolbarFactoryInterface $factory): self
	{
		$this->factory = $factory;

return $this;
	}

/**
	 * Append a button to toolbar.
	 *
	 * @param   ToolbarButton  $button  The button instance.
	 * @param   array          $args    The more arguments.
	 *
	 * @return  ToolbarButton|boolean  Return button instance to help chaining configure. If using legacy arguments
	 *                                 returns true
	 *
	 * @since   1.5
	 */
	public function appendButton($button, ...$args)
	{
		if ($button instanceof ToolbarButton)
		{
			$button->setParent($this);

$this->_bar[] = $button;

return $button;
		}

// B/C
		array_unshift($args, $button);
		$this->_bar[] = $args;

Log::add(
			sprintf(
				'%s::appendButton() should only accept %s instance in Joomla 5.0.',
				static::class,
				ToolbarButton::class
			),
			Log::WARNING,
			'deprecated'
		);

return true;
	}

/**
	 * Get the list of toolbar links.
	 *
	 * @return  array
	 *
	 * @since   1.6
	 */
	public function getItems()
	{
		return $this->_bar;
	}

/**
	 * Set the button list.
	 *
	 * @param   ToolbarButton[]  $items  The button list array.
	 *
	 * @return  static
	 *
	 * @since   4.0.0
	 */
	public function setItems(array $items): self
	{
		$this->_bar = $items;

return $this;
	}

/**
	 * Get the name of the toolbar.
	 *
	 * @return  string
	 *
	 * @since   1.6
	 */
	public function getName()
	{
		return $this->_name;
	}

/**
	 * Prepend a button to toolbar.
	 *
	 * @param   ToolbarButton  $button  The button instance.
	 * @param   array          $args    The more arguments.
	 *
	 * @return  ToolbarButton|boolean  Return button instance to help chaining configure. If using legacy arguments
	 *                                 returns true
	 *
	 * @since   1.5
	 */
	public function prependButton($button, ...$args)
	{
		if ($button instanceof ToolbarButton)
		{
			$button->setParent($this);

array_unshift($this->_bar, $button);

return $button;
		}

// B/C
		array_unshift($args, $button);
		array_unshift($this->_bar, $args);

Log::add(
			sprintf(
				'%s::prependButton() should only accept %s instance in Joomla 5.0.',
				static::class,
				ToolbarButton::class
			),
			Log::WARNING,
			'deprecated'
		);

return true;
	}

/**
	 * Render a toolbar.
	 *
	 * @param   array  $options  The options of toolbar.
	 *
	 * @return  string  HTML for the toolbar.
	 *
	 * @throws \Exception
	 * @since   1.5
	 */
	public function render(array $options = [])
	{
		$html = [];

$isChild = !empty($options['is_child']);

// Start toolbar div.
		if (!$isChild)
		{
			$layout = new FileLayout('joomla.toolbar.containeropen');

$html[] = $layout->render(['id' => $this->_name]);
		}

$len = count($this->_bar);

// Render each button in the toolbar.
		foreach ($this->_bar as $i => $button)
		{
			if ($button instanceof ToolbarButton)
			{
				// Child dropdown only support new syntax
				$button->setOption('is_child', $isChild);
				$button->setOption('is_first_child', $i === 0);
				$button->setOption('is_last_child', $i === $len - 1);
				$html[] = $button->render();
			}
			// B/C
			else
			{
				$html[] = $this->renderButton($button);
			}
		}

// End toolbar div.
		if (!$isChild)
		{
			$layout = new FileLayout('joomla.toolbar.containerclose');

$html[] = $layout->render([]);
		}

return implode('', $html);
	}

/**
	 * Render a button.
	 *
	 * @param   array  &$node  A toolbar node.
	 *
	 * @return  string
	 *
	 * @since   1.5
	 * @throws  \Exception
	 */
	public function renderButton(&$node)
	{
		// Get the button type.
		$type = $node[0];

$button = $this->loadButtonType($type);

// Check for error.
		if ($button === false)
		{
			throw new \UnexpectedValueException(Text::sprintf('JLIB_HTML_BUTTON_NOT_DEFINED', $type));
		}

$button->setParent($this);

return $button->render($node);
	}

/**
	 * Loads a button type.
	 *
	 * @param   string   $type  Button Type
	 * @param   boolean  $new   False by default
	 *
	 * @return  false|ToolbarButton
	 *
	 * @since   1.5
	 */
	public function loadButtonType($type, $new = false)
	{
		// For B/C, catch the exceptions thrown by the factory
		try
		{
			return $this->factory->createButton($this, $type);
		}
		catch (\InvalidArgumentException $e)
		{
			Log::add($e->getMessage(), Log::WARNING, 'jerror');

return false;
		}
	}

/**
	 * Add a directory where Toolbar should search for button types in LIFO order.
	 *
	 * You may either pass a string or an array of directories.
	 *
	 * Toolbar will be searching for an element type in the same order you
	 * added them. If the parameter type cannot be found in the custom folders,
	 * it will look in libraries/joomla/html/toolbar/button.
	 *
	 * @param   mixed  $path  Directory or directories to search.
	 *
	 * @return  void
	 *
	 * @since       1.5
	 * @deprecated  5.0  ToolbarButton classes should be autoloaded
	 */
	public function addButtonPath($path)
	{
		Log::add(
			sprintf(
				'Registering lookup paths for toolbar buttons is deprecated and will be removed in Joomla 5.0.'
				. ' %1$s objects should be autoloaded or a custom %2$s implementation supporting path lookups provided.',
				ToolbarButton::class,
				ToolbarFactoryInterface::class
			),
			Log::WARNING,
			'deprecated'
		);

// Loop through the path directories.
		foreach ((array) $path as $dir)
		{
			// No surrounding spaces allowed!
			$dir = trim($dir);

// Add trailing separators as needed.
			if (substr($dir, -1) !== DIRECTORY_SEPARATOR)
			{
				// Directory
				$dir .= DIRECTORY_SEPARATOR;
			}

// Add to the top of the search dirs.
			array_unshift($this->_buttonPath, $dir);
		}
	}

/**
	 * Get the lookup paths for button objects
	 *
	 * @return  array
	 *
	 * @since   4.0.0
	 * @deprecated  5.0  ToolbarButton classes should be autoloaded
	 */
	public function getButtonPath(): array
	{
		Log::add(
			sprintf(
				'Lookup paths for %s objects is deprecated and will be removed in Joomla 5.0.',
				ToolbarButton::class
			),
			Log::WARNING,
			'deprecated'
		);

return $this->_buttonPath;
	}

/**
	 * Create child toolbar.
	 *
	 * @param   string  $name  The toolbar name.
	 *
	 * @return  static
	 *
	 * @since   4.0.0
	 */
	public function createChild($name): self
	{
		return new static($name, $this->factory);
	}

/**
	 * Magic method proxy.
	 *
	 * @param   string  $name  The method name.
	 * @param   array   $args  The method arguments.
	 *
	 * @return  ToolbarButton
	 *
	 * @throws  \Exception
	 *
	 * @since   4.0.0
	 */
	public function __call($name, $args)
	{
		if (strtolower(substr($name, -6)) === 'button')
		{
			$type = substr($name, 0, -6);

$button = $this->factory->createButton($this, $type);

$button->name($args[0] ?? '')
				->text($args[1] ?? '')
				->task($args[2] ?? '');

return $this->appendButton($button);
		}

throw new \BadMethodCallException(
			sprintf(
				'Method %s() not found in class: %s',
				$name,
				static::class
			)
		);
	}
}