bench-forgejo/web_src/js/markup/mermaid.js
6543 640066840e
Use a generic markup class to display externally rendered files and diffs (#15735)
* creates and implements generic markup less class

* How to give custom CSS to externally rendered html

* Clarifies sources of CSS styling of markup

* further clarification of sources of markup styling

* rename _markdown to _markup

* remove defunct import

* fix orphaned reference

* Update docs/content/doc/advanced/external-renderers.en-us.md

* more renames markdown -> markup

* do not suggest less customization

* add back tokens

* fix class whitespace, remove useless if-clause

* remove unused csv-data rules

* use named exports and rename functions

* sort imports

Co-authored-by: HarvsG <11440490+HarvsG@users.noreply.github.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: silverwind <me@silverwind.io>
2021-05-07 10:43:41 +02:00

56 lines
1.4 KiB
JavaScript

const MAX_SOURCE_CHARACTERS = 5000;
function displayError(el, err) {
el.closest('pre').classList.remove('is-loading');
const errorNode = document.createElement('div');
errorNode.setAttribute('class', 'ui message error markup-block-error mono');
errorNode.textContent = err.str || err.message || String(err);
el.closest('pre').before(errorNode);
}
export async function renderMermaid(els) {
if (!els || !els.length) return;
const mermaid = await import(/* webpackChunkName: "mermaid" */'mermaid');
mermaid.initialize({
mermaid: {
startOnLoad: false,
},
flowchart: {
useMaxWidth: true,
htmlLabels: false,
},
theme: 'neutral',
securityLevel: 'strict',
});
for (const el of els) {
if (el.textContent.length > MAX_SOURCE_CHARACTERS) {
displayError(el, new Error(`Mermaid source of ${el.textContent.length} characters exceeds the maximum allowed length of ${MAX_SOURCE_CHARACTERS}.`));
continue;
}
let valid;
try {
valid = mermaid.parse(el.textContent);
} catch (err) {
displayError(el, err);
}
if (!valid) {
el.closest('pre').classList.remove('is-loading');
continue;
}
try {
mermaid.init(undefined, el, (id) => {
const svg = document.getElementById(id);
svg.classList.add('mermaid-chart');
svg.closest('pre').replaceWith(svg);
});
} catch (err) {
displayError(el, err);
}
}
}