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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// 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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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace tiny_equation\external;
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use context;
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use core_external\external_api;
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use core_external\external_function_parameters;
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use core_external\external_single_structure;
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use core_external\external_value;
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use filter_manager;
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/**
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* TinyMCE Equation external API for filtering the equation.
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*
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* @package tiny_equation
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* @copyright 2022 Huong Nguyen <huongnv13@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class filter extends external_api {
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/**
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* Describes the parameters for filtering the equation.
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*
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* @return external_function_parameters
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* @since Moodle 4.1
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*/
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public static function execute_parameters(): external_function_parameters {
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return new external_function_parameters([
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'contextid' => new external_value(PARAM_INT, 'The context ID', VALUE_REQUIRED),
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'content' => new external_value(PARAM_RAW, 'The equation content', VALUE_REQUIRED)
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]);
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}
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/**
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* External function to filter the equation.
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*
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* @param int $contextid Context ID.
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* @param string $content Equation content.
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* @return array
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* @since Moodle 4.1
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*/
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public static function execute(int $contextid, string $content): array {
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[
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'contextid' => $contextid,
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'content' => $content
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] = self::validate_parameters(self::execute_parameters(), [
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'contextid' => $contextid,
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'content' => $content
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]);
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$context = context::instance_by_id($contextid);
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self::validate_context($context);
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$result = filter_manager::instance()->filter_text($content, $context);
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return [
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'content' => $result,
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];
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}
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/**
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* Describes the data returned from the external function.
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*
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* @return external_single_structure
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* @since Moodle 4.1
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*/
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public static function execute_returns(): external_single_structure {
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return new external_single_structure([
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'content' => new external_value(PARAM_RAW, 'Filtered content'),
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]);
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}
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}
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