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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of Biurad opensource projects. |
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* |
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* PHP version 7.2 and above required |
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* |
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* @author Divine Niiquaye Ibok <[email protected]> |
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* @copyright 2019 Biurad Group (https://biurad.com/) |
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* @license https://opensource.org/licenses/BSD-3-Clause License |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Biurad\UI\Helper; |
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/** |
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* SlotsHelper manages template slots. |
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* |
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* @author Fabien Potencier <[email protected]> |
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* @author Divine Niiquaye Ibok <[email protected]> |
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*/ |
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class SlotsHelper extends AbstractHelper |
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{ |
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/** @var array<string,mixed> */ |
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protected $slots = []; |
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/** @var array<int,string> */ |
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protected $openSlots = []; |
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/** |
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* Starts a new slot. |
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* |
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* This method starts an output buffer that will be |
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* closed when the stop() method is called. |
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* |
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* @throws \InvalidArgumentException if a slot with the same name is already started |
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*/ |
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public function start(string $name): void |
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{ |
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if (\in_array($name, $this->openSlots, true)) { |
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throw new \InvalidArgumentException(\sprintf('A slot named "%s" is already started.', $name)); |
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} |
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$this->openSlots[] = $name; |
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$this->slots[$name] = ''; |
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\ob_start(); |
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\ob_implicit_flush(false); |
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} |
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/** |
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* Stops a slot. |
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* |
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* @throws \LogicException if no slot has been started |
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*/ |
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public function stop(): void |
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{ |
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if (!$this->openSlots) { |
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throw new \LogicException('No slot started.'); |
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} |
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$name = \array_pop($this->openSlots); |
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$this->slots[$name] = \ob_get_clean(); |
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} |
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/** |
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* Returns true if the slot exists. |
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* |
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* @return bool |
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*/ |
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public function has(string $name) |
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{ |
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return isset($this->slots[$name]); |
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} |
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/** |
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* Gets the slot value. |
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* |
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* @param bool|string $default The default slot content |
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* |
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* @return string|false The slot content |
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*/ |
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public function get(string $name, $default = false) |
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{ |
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return $this->slots[$name] ?? $default; |
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} |
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/** |
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* Sets a slot value. |
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*/ |
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public function set(string $name, string $content): void |
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{ |
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$this->slots[$name] = $content; |
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} |
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/** |
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* Outputs a slot. |
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* |
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* @param bool|string $default The default slot content |
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* |
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* @return bool true if the slot is defined or if a default content has been provided, false otherwise |
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*/ |
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public function output(string $name, $default = false): bool |
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{ |
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if (!isset($this->slots[$name])) { |
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if (false !== $default) { |
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echo $default; |
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return true; |
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} |
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return false; |
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} |
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echo $this->slots[$name]; |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName(): string |
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{ |
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return 'slots'; |
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} |
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} |
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biurad /
php-templating
Loading history...
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.