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<?php |
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/** |
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* Joomla! Content Management System |
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* |
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* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved. |
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* @license GNU General Public License version 2 or later; see LICENSE.txt |
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*/ |
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namespace Joomla\CMS\Table\Observer; |
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use Joomla\CMS\Helper\ContentHistoryHelper; |
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defined('JPATH_PLATFORM') or die; |
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/** |
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* Table class supporting modified pre-order tree traversal behavior. |
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* |
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* @since 3.2 |
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*/ |
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class ContentHistory extends AbstractObserver |
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{ |
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/** |
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* Helper object for storing and deleting version history information associated with this table observer |
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* |
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* @var ContentHistoryHelper |
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* @since 3.2 |
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*/ |
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protected $contenthistoryHelper; |
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/** |
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* The pattern for this table's TypeAlias |
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* |
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* @var string |
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* @since 3.2 |
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*/ |
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protected $typeAliasPattern = null; |
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/** |
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* Not public, so marking private and deprecated, but needed internally in parseTypeAlias for |
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* PHP < 5.4.0 as it's not passing context $this to closure function. |
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* |
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* @var ContentHistory |
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* @since 3.2 |
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* @deprecated Never use this |
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* @private |
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*/ |
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public static $_myTableForPregreplaceOnly; |
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/** |
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* Creates the associated observer instance and attaches it to the $observableObject |
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* Creates the associated content history helper class instance |
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* $typeAlias can be of the form "{variableName}.type", automatically replacing {variableName} with table-instance variables variableName |
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* |
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* @param \JObservableInterface $observableObject The subject object to be observed |
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* @param array $params ( 'typeAlias' => $typeAlias ) |
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* |
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* @return ContentHistory |
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* |
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* @since 3.2 |
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*/ |
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public static function createObserver(\JObservableInterface $observableObject, $params = array()) |
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{ |
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$typeAlias = $params['typeAlias']; |
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$observer = new self($observableObject); |
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$observer->contenthistoryHelper = new ContentHistoryHelper($typeAlias); |
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$observer->typeAliasPattern = $typeAlias; |
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return $observer; |
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} |
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/** |
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* Post-processor for $table->store($updateNulls) |
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* |
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* @param boolean &$result The result of the load |
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* |
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* @return void |
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* |
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* @since 3.2 |
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*/ |
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public function onAfterStore(&$result) |
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{ |
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if ($result) |
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{ |
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$this->parseTypeAlias(); |
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$aliasParts = explode('.', $this->contenthistoryHelper->typeAlias); |
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if (\JComponentHelper::getParams($aliasParts[0])->get('save_history', 0)) |
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{ |
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$this->contenthistoryHelper->store($this->table); |
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} |
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} |
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} |
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/** |
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* Pre-processor for $table->delete($pk) |
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* |
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* @param mixed $pk An optional primary key value to delete. If not set the instance property value is used. |
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* |
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* @return void |
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* |
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* @since 3.2 |
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* @throws \UnexpectedValueException |
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*/ |
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public function onBeforeDelete($pk) |
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{ |
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$this->parseTypeAlias(); |
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$aliasParts = explode('.', $this->contenthistoryHelper->typeAlias); |
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if (\JComponentHelper::getParams($aliasParts[0])->get('save_history', 0)) |
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{ |
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$this->parseTypeAlias(); |
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$this->contenthistoryHelper->deleteHistory($this->table); |
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} |
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} |
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/** |
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* Internal method |
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* Parses a TypeAlias of the form "{variableName}.type", replacing {variableName} with table-instance variables variableName |
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* Storing result into $this->contenthistoryHelper->typeAlias |
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* |
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* @return void |
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* |
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* @since 3.2 |
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*/ |
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protected function parseTypeAlias() |
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{ |
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// Needed for PHP < 5.4.0 as it's not passing context $this to closure function |
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static::$_myTableForPregreplaceOnly = $this->table; |
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$this->contenthistoryHelper->typeAlias = preg_replace_callback('/{([^}]+)}/', |
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function($matches) |
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{ |
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return ContentHistory::$_myTableForPregreplaceOnly->{$matches[1]}; |
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}, |
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$this->typeAliasPattern |
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); |
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} |
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} |
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redCOMPONENT-COM /
redCORE
