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<?php namespace rtens\domin\delivery\web\renderers; |
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use rtens\domin\delivery\DelayedOutput; |
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use rtens\domin\delivery\web\Element; |
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use rtens\domin\delivery\web\WebRenderer; |
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class DelayedOutputRenderer implements WebRenderer { |
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/** |
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* @var int If >0, the buffer is filled with null bytes to be forced to flush. |
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*/ |
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public static $bufferSize = 0; |
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/** |
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* @param mixed $value |
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* @return bool |
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*/ |
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public function handles($value) { |
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return $value instanceof DelayedOutput; |
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} |
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/** |
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* @param DelayedOutput $value |
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* @return DelayedOutput |
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*/ |
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public function render($value) { |
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header('Content-Encoding: none;'); |
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header('X-Accel-Buffering: no'); |
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ob_end_flush(); |
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$value->setPrinter(function ($string) { |
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echo $string; |
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$length = strlen($string); |
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if (self::$bufferSize > $length) { |
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echo str_repeat("\x00", self::$bufferSize - $length + 1); |
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} |
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flush(); |
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ob_flush(); |
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}); |
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$value->setExceptionHandler(function (\Exception $exception) { |
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echo '</pre>'; |
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echo new Element('div', ['class' => 'alert alert-danger'], [ |
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htmlentities($exception->getMessage()) |
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]); |
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}); |
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return new DelayedOutput(function () use ($value) { |
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$value->write('<pre>'); |
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$value->__toString(); |
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$value->write('</pre>'); |
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}); |
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} |
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/** |
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* @param mixed $value |
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* @return array|Element[] |
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*/ |
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public function headElements($value) { |
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return [ |
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new Element('script', [], [' |
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var scrolled = true; |
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var keepScrolling = setInterval(function () { |
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scrolled = true; |
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window.scrollTo(0,document.body.scrollHeight); |
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}, 100); |
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window.addEventListener("scroll", function () { |
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if (!scrolled) { |
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clearInterval(keepScrolling); |
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} |
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scrolled = false; |
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}); |
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']) |
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]; |
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} |
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} |
rtens /
domin
