Extensions

mathBlock

Node takes options 0.42 kB gzipped

A formula on a line of its own.

The same node as `mathInline` in every way but where it sits: a block, so `ctx.insert` splits the paragraph around it and `$$E=mc^2$$ ` typed at the start of a paragraph replaces the paragraph with it.

1 · Install

One package for every extension · there is no @matrajs/mathBlock to install.

npm i @matrajs/core

2 · Add it to the editor

Import it and put it in the extensions array. That array is the whole feature list: what is not in it is not in your bundle and not in the document's schema.

import { createEditor, document, paragraph, text, mathBlock } from '@matrajs/core'

const editor = createEditor({
  extensions: [document, paragraph, text, mathBlock({ … })],
  element: document.querySelector('#editor'),
})

3 · Use it

Run a command, and give focus back · a click on a button takes it away.

editor.commands.insertBlockMath()
editor.focus()

Wired to a button, with the pressed state kept in step:

const button = document.querySelector('#insertBlockMath')

button.addEventListener('click', () => {
  editor.commands.insertBlockMath()
  editor.focus()
})

const read = () => button.setAttribute('aria-pressed', String(editor.isActive('mathBlock')))
editor.on('selectionChange', read)
editor.on('change', read)
read()

Commands

Every one returns true if it changed the document and false if it could not · a command that does not apply where the caret is says so rather than throwing.

In the document

• Reads div[data-math] when HTML is pasted or loaded.
• Writes div in getHTML() and renderToHTML().

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