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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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/**
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* Module to assist with creation and management of content.
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*
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* @module editor_tiny/content
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* @copyright Andrew Lyons <andrew@nicols.co.uk>
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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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/**
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* Add MathML support to the editor.
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*
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* @param {TinyMCE} editor
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*/
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export const addMathMLSupport = (editor) => {
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const getNodeType = (node) => {
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const style = node.attr('style');
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if (style?.includes('display')) {
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if (style.match(/display:[^;]*inline/)) {
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return 'tiny-math-span';
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}
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}
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return 'tiny-math-block';
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};
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editor.on('PreInit', () => {
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editor.schema.addCustomElements({
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// Add support for MathML by defining some tiny-math blocks which extends SPAN/DIV.
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// Note: This is blind support and does not check the child content.
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// Any invalid markup will be accepted.
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// Note: We use the same names as the Tiny Premium Math plugin to avoid conflicts if both are enabled.
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math: {
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'extends': 'div',
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},
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'tiny-math-span': {
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'extends': "span",
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},
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'tiny-math-block': {
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'extends': "div",
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},
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});
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// Add a Parser filter to wrap math nodes in a tiny-math-[block|span] element.
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editor.parser.addNodeFilter('math', (nodes) => nodes.forEach((node) => {
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if (node.parent) {
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if (node.parent.name === 'tiny-math-block' || node.parent.name === 'tiny-math-span') {
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// Already wrapped.
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return;
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}
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}
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const displayMode = getNodeType(node);
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node.wrap(editor.editorManager.html.Node.create(displayMode, {
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contenteditable: 'false',
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}));
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}));
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// Add a Serializer filter to remove the tiny-math-[block|span] wrapper.
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editor.serializer.addNodeFilter('tiny-math-span, tiny-math-block', (nodes, name) => nodes.forEach((node) => {
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const displayMode = name.replace('tiny-math-', '');
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node.children().forEach((child) => {
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const currentStyle = child.attr('style');
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if (currentStyle) {
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child.attr('style', `${currentStyle};display: ${displayMode}`);
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} else {
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child.attr('style', `display: ${displayMode}`);
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}
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});
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node.unwrap();
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}));
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});
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};
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/**
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* Add SVG support to the editor.
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*
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* @param {TinyMCE} editor
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*/
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export const addSVGSupport = (editor) => {
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editor.on('PreInit', () => {
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editor.schema.addCustomElements({
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// Add support for SVG by defining an SVG tag which extends DIV.
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// Note: This is blind support and does not check the child content.
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// Any invalid markup will be accepted.
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svg: {
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'extends': "div",
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},
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'tiny-svg-block': {
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'extends': "div",
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},
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});
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editor.parser.addNodeFilter('svg', (nodes) => nodes.forEach((node) => {
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node.wrap(editor.editorManager.html.Node.create('tiny-svg-block', {
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contenteditable: 'false',
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}));
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}));
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editor.serializer.addNodeFilter('tiny-svg-block', (nodes) => nodes.forEach((node) => {
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node.unwrap();
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}));
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});
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};
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