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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Object;

defined('JPATH_PLATFORM') or die;

/**
 * Joomla Platform Object Class
 *
 * This class allows for simple but smart objects with get and set methods
 * and an internal error handler.
 *
 * @since       1.7.0
 * @deprecated  4.0
 */
class CMSObject
{
	/**
	 * An array of error messages or Exception objects.
	 *
	 * @var    array
	 * @since  1.7.0
	 * @see    JError
	 * @deprecated  12.3  JError has been deprecated
	 */
	protected $_errors = array();

/**
	 * Class constructor, overridden in descendant classes.
	 *
	 * @param   mixed  $properties  Either and associative array or another
	 *                              object to set the initial properties of the object.
	 *
	 * @since   1.7.0
	 */
	public function __construct($properties = null)
	{
		if ($properties !== null)
		{
			$this->setProperties($properties);
		}
	}

/**
	 * Magic method to convert the object to a string gracefully.
	 *
	 * @return  string  The classname.
	 *
	 * @since   1.7.0
	 * @deprecated 12.3  Classes should provide their own __toString() implementation.
	 */
	public function __toString()
	{
		return get_class($this);
	}

/**
	 * Sets a default value if not already assigned
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $default   The default value.
	 *
	 * @return  mixed
	 *
	 * @since   1.7.0
	 */
	public function def($property, $default = null)
	{
		$value = $this->get($property, $default);

return $this->set($property, $value);
	}

/**
	 * Returns a property of the object or the default value if the property is not set.
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $default   The default value.
	 *
	 * @return  mixed    The value of the property.
	 *
	 * @since   1.7.0
	 *
	 * @see     CMSObject::getProperties()
	 */
	public function get($property, $default = null)
	{
		if (isset($this->$property))
		{
			return $this->$property;
		}

return $default;
	}

/**
	 * Returns an associative array of object properties.
	 *
	 * @param   boolean  $public  If true, returns only the public properties.
	 *
	 * @return  array
	 *
	 * @since   1.7.0
	 *
	 * @see     CMSObject::get()
	 */
	public function getProperties($public = true)
	{
		$vars = get_object_vars($this);

if ($public)
		{
			foreach ($vars as $key => $value)
			{
				if ('_' == substr($key, 0, 1))
				{
					unset($vars[$key]);
				}
			}
		}

return $vars;
	}

/**
	 * Get the most recent error message.
	 *
	 * @param   integer  $i         Option error index.
	 * @param   boolean  $toString  Indicates if JError objects should return their error message.
	 *
	 * @return  string   Error message
	 *
	 * @since   1.7.0
	 * @see     JError
	 * @deprecated 12.3  JError has been deprecated
	 */
	public function getError($i = null, $toString = true)
	{
		// Find the error
		if ($i === null)
		{
			// Default, return the last message
			$error = end($this->_errors);
		}
		elseif (!array_key_exists($i, $this->_errors))
		{
			// If $i has been specified but does not exist, return false
			return false;
		}
		else
		{
			$error = $this->_errors[$i];
		}

// Check if only the string is requested
		if ($error instanceof \Exception && $toString)
		{
			return $error->getMessage();
		}

return $error;
	}

/**
	 * Return all errors, if any.
	 *
	 * @return  array  Array of error messages or JErrors.
	 *
	 * @since   1.7.0
	 * @see     JError
	 * @deprecated 12.3  JError has been deprecated
	 */
	public function getErrors()
	{
		return $this->_errors;
	}

/**
	 * Modifies a property of the object, creating it if it does not already exist.
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $value     The value of the property to set.
	 *
	 * @return  mixed  Previous value of the property.
	 *
	 * @since   1.7.0
	 */
	public function set($property, $value = null)
	{
		$previous = isset($this->$property) ? $this->$property : null;
		$this->$property = $value;

return $previous;
	}

/**
	 * Set the object properties based on a named array/hash.
	 *
	 * @param   mixed  $properties  Either an associative array or another object.
	 *
	 * @return  boolean
	 *
	 * @since   1.7.0
	 *
	 * @see     CMSObject::set()
	 */
	public function setProperties($properties)
	{
		if (is_array($properties) || is_object($properties))
		{
			foreach ((array) $properties as $k => $v)
			{
				// Use the set function which might be overridden.
				$this->set($k, $v);
			}

return true;
		}

return false;
	}

/**
	 * Add an error message.
	 *
	 * @param   string  $error  Error message.
	 *
	 * @return  void
	 *
	 * @since   1.7.0
	 * @see     JError
	 * @deprecated 12.3  JError has been deprecated
	 */
	public function setError($error)
	{
		$this->_errors[] = $error;
	}
}