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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\base; |
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/** |
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* DynamicContentAwareTrait implements common methods for classes |
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* which support a [[View]] dynamic content feature. |
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* |
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* @author Sergey Makinen <[email protected]> |
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* @since 2.0.14 |
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*/ |
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trait DynamicContentAwareTrait |
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{ |
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/** |
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* @var string[] a list of placeholders for dynamic content |
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*/ |
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private $_dynamicPlaceholders; |
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/** |
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* Returns the view object that can be used to render views or view files using dynamic contents. |
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* @return View the view object that can be used to render views or view files. |
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*/ |
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abstract protected function getView(); |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getDynamicPlaceholders() |
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{ |
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return $this->_dynamicPlaceholders; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setDynamicPlaceholders($placeholders) |
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{ |
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$this->_dynamicPlaceholders = $placeholders; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addDynamicPlaceholder($name, $statements) |
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{ |
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$this->_dynamicPlaceholders[$name] = $statements; |
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} |
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/** |
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* Replaces placeholders in $content with results of evaluated dynamic statements. |
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* @param string $content content to be parsed. |
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* @param string[] $placeholders placeholders and their values. |
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* @param bool $isRestoredFromCache whether content is going to be restored from cache. |
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* @return string final content. |
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*/ |
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protected function updateDynamicContent($content, $placeholders, $isRestoredFromCache = false) |
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{ |
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if (empty($placeholders) || !is_array($placeholders)) { |
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return $content; |
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} |
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if (count($this->getView()->getDynamicContents()) === 0) { |
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// outermost cache: replace placeholder with dynamic content |
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foreach ($placeholders as $name => $statements) { |
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$placeholders[$name] = $this->getView()->evaluateDynamicContent($statements); |
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} |
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$content = strtr($content, $placeholders); |
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} |
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if ($isRestoredFromCache) { |
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$view = $this->getView(); |
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foreach ($placeholders as $name => $statements) { |
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$view->addDynamicPlaceholder($name, $statements); |
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} |
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} |
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return $content; |
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} |
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} |
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yiisoft /
yii2
