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<?php |
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/** |
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* This file is part of the sauls/widget package. |
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* |
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* @author Saulius Vaičeliūnas <[email protected]> |
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* @link http://saulius.vaiceliunas.lt |
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* @copyright 2018 |
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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 Sauls\Component\Widget; |
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use function Sauls\Component\Helper\define_object; |
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use Sauls\Component\Collection\ArrayCollection; |
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use Sauls\Component\Collection\Collection; |
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use Sauls\Component\OptionsResolver\OptionsResolver; |
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abstract class Widget implements WidgetInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $id; |
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/** |
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* @var Collection |
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*/ |
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private $options; |
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/** |
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* @var string |
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*/ |
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public static $prefix = 'w'; |
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/** |
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* @var int |
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*/ |
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public static $total = 0; |
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/** |
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* |
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* @throws \Exception |
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*/ |
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private function configure(array $options = []): void |
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{ |
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try { |
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$resolver = new OptionsResolver; |
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$this->configureOptions($resolver); |
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$this->options = new ArrayCollection($resolver->resolve($this->resolveOptions($options))); |
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define_object($this, $this->options->all()); |
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$this->initialize(); |
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} catch (\Exception $e) { |
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throw $e; |
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} |
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} |
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/** |
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* This method is called after all options and variables are configured |
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* You can safely initialise your variables, or other logic here |
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*/ |
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protected function initialize(): void |
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{ |
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} |
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abstract protected function configureOptions(OptionsResolver $resolver): void; |
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public function resolveOptions(array $options): array |
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{ |
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return $options; |
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} |
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public function getId($generate = true): string |
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{ |
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if ($generate && $this->id === null) { |
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$this->id = static::$prefix.static::$total++; |
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} |
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return $this->id; |
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} |
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public function setId(string $value): void |
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{ |
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$this->id = $value; |
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} |
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public function getOptionsCollection(): Collection |
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{ |
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return $this->options; |
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} |
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public function getOptions(): array |
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{ |
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return $this->options->all(); |
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} |
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public function getOption($key, $default = null) |
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{ |
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return $this->options->get($key, $default); |
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} |
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abstract public function render(): string; |
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/** |
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* @throws \Exception |
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*/ |
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public function widget(array $options = []): WidgetInterface |
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{ |
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$this->configure($options); |
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return $this; |
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} |
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public function __toString() |
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{ |
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try { |
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$this->startAndFlushOutputBuffers(); |
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try { |
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$out = $this->render(); |
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} catch (\Exception $e) { |
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$this->closeNotClosedOutputBuffer(); |
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throw $e; |
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} |
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return $this->outputOutputBufferAndWidgetContent($out); |
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} catch (\Exception $e) { |
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return $e->getMessage(); |
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} |
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} |
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private function startAndFlushOutputBuffers(): void |
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{ |
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ob_start(); |
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ob_implicit_flush(false); |
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} |
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private function closeNotClosedOutputBuffer(): void |
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{ |
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if (ob_get_level() > 0) { |
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ob_end_clean(); |
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} |
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} |
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private function outputOutputBufferAndWidgetContent(string $out): string |
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{ |
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return ob_get_clean().$out; |
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} |
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} |
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