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<?php |
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declare(strict_types=1); |
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/** |
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* BEdita, API-first content management framework |
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* Copyright 2020 ChannelWeb Srl, Chialab Srl |
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* |
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* This file is part of BEdita: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* See LICENSE.LGPL or <http://gnu.org/licenses/lgpl-3.0.html> for more details. |
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*/ |
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namespace BEdita\WebTools\View\Helper; |
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use Cake\View\Helper; |
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/** |
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* Helper to handle Web Components initialization with properties. |
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*/ |
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class WebComponentsHelper extends Helper |
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{ |
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public $helpers = ['Html']; |
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/** |
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* @var array A list of used identifiers. |
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**/ |
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private $ids = []; |
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/** |
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* Pass properties to an HTMLElement using attributes for plain values and inline scripts for array. |
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* |
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* @param array $properties A list of properties to set. |
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* @return array An array of attributes. |
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*/ |
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public function props(array $properties): array |
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{ |
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if (empty($properties)) { |
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return []; |
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} |
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$id = count($this->ids); |
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$this->ids[] = $id; |
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$attributes = [ |
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'data-wc' => $id, |
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]; |
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$statements = []; |
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foreach ($properties as $key => $value) { |
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if (is_string($value) || is_numeric($value)) { |
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$attributes[$key] = $value; |
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} else { |
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$statements[] = sprintf('elem[\'%s\'] = %s;', $key, json_encode($value)); |
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} |
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} |
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if (!empty($statements)) { |
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$content = sprintf('(function(){var elem = document.querySelector(\'[data-wc="%s"]\');%s}());if(document.currentScript)document.currentScript.parentNode.removeChild(document.currentScript);', $id, join('', $statements)); |
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$this->Html->scriptBlock($content, [ 'block' => 'scriptsComponents' ]); |
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} |
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return $attributes; |
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} |
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/** |
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* Initialize a Custom Element which extends a native node. |
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* |
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* @param string $tagName The defined Custom Element name to set as `is` attribute. |
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* @param array $properties A list of properties to set. |
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* @param string $scriptPath The path of the definition script to import. |
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* @return string An attributes string list like `is="my-element" data-wc="0"`. |
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*/ |
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public function is(string $tagName, array $properties = [], string $scriptPath = ''): string |
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{ |
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if (!empty($scriptPath)) { |
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$this->Html->script($scriptPath, [ 'block' => 'scriptsComponents' ]); |
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} |
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$options = ['is' => $tagName] + $this->props($properties); |
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return trim($this->Html->templater()->formatAttributes($options)); |
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} |
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/** |
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* Initialize a Custom Element. |
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* |
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* @param string $tagName The defined Custom Element name to use as tag name. |
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* @param array $properties A list of properties to set. |
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* @param string $scriptPath The path of the definition script to import. |
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* @return string An HTML node string like `<my-element data-wc="0"></my-element>`. |
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*/ |
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public function element(string $tagName, array $properties = [], $scriptPath = ''): string |
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{ |
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if (!empty($scriptPath)) { |
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$this->Html->script($scriptPath, [ 'block' => 'scriptsComponents' ]); |
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} |
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return $this->Html->tag($tagName, '', $this->props($properties)); |
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} |
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} |
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bedita /
web-tools
