blob: 56b1896e9f15328b54940af5207271f108377778 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
import flash from '~/flash';
// Renders diagrams and flowcharts from text using Mermaid in any element with the
// `js-render-mermaid` class.
//
// Example markup:
//
// <pre class="js-render-mermaid">
// graph TD;
// A-- > B;
// A-- > C;
// B-- > D;
// C-- > D;
// </pre>
//
export default function renderMermaid($els) {
if (!$els.length) return;
import(/* webpackChunkName: 'mermaid' */ 'blackst0ne-mermaid').then((mermaid) => {
mermaid.initialize({
// mermaid core options
mermaid: {
startOnLoad: false,
},
// mermaidAPI options
theme: 'neutral',
});
$els.each((i, el) => {
const source = el.textContent;
// Remove any extra spans added by the backend syntax highlighting.
Object.assign(el, { textContent: source });
mermaid.init(undefined, el, (id) => {
const svg = document.getElementById(id);
svg.classList.add('mermaid');
// pre > code > svg
svg.closest('pre').replaceWith(svg);
// We need to add the original source into the DOM to allow Copy-as-GFM
// to access it.
const sourceEl = document.createElement('text');
sourceEl.classList.add('source');
sourceEl.setAttribute('display', 'none');
sourceEl.textContent = source;
svg.appendChild(sourceEl);
});
});
}).catch((err) => {
flash(`Can't load mermaid module: ${err}`);
});
}
|
