FeatherWiki/extensions/html-to-md.js
2024-05-15 21:01:34 -06:00

59 lines
2.4 KiB
JavaScript

/**
* This file is part of Feather Wiki.
*
* Feather Wiki is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
*
* Feather Wiki is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with Feather Wiki. If not, see https://www.gnu.org/licenses/.
*/
// This extension adds Turndown.js from a CDN and overrides the toggle button behavior for switching between HTML and markdown editors.
FW.ready(() => {
const { state, emitter } = FW;
const turndownScript = document.createElement('script');
turndownScript.src = 'https://unpkg.com/turndown@7.1.1/dist/turndown.js';
document.body.appendChild(turndownScript);
const interval = setInterval(() => {
if (TurndownService) {
// Wait until turndown is loaded and then make the escape process less aggressive
TurndownService.prototype.escape = md => {
return md.replace(/^(\d+)\./g, '$1\\.');
}
clearInterval(interval);
}
}, 500);
['DOMContentLoaded', 'render'].forEach(ev => {
emitter.on(ev, () => {
setTimeout(() => { // Adds a very small delay so it injects after render when elements exist in DOM
convertHtmlToMarkdown();
}, 50);
});
})
emitter.emit('DOMContentLoaded');
function convertHtmlToMarkdown () {
const ref = document.querySelector('form div.w1.tr');
if (!ref) return;
const button = ref.querySelector('button');
if (!button) return;
var newButton = button.cloneNode(true);
button.parentNode.replaceChild(newButton, button);
newButton.addEventListener('click', e => {
e.preventDefault();
const { useMd, content } = state.edits;
if (useMd) {
state.edits.content = md(content);
} else {
var turndownService = new TurndownService({
headingStyle: 'atx',
hr: '---',
bulletListMarker: '-',
});
turndownService.keep(['del', 'ins']);
state.edits.content = FW.img.abbr(turndownService.turndown(content));
}
state.edits.useMd = !useMd;
emitter.emit(state.events.RENDER);
});
}
});