365 lines
10 KiB
JavaScript
365 lines
10 KiB
JavaScript
/* eslint-disable class-methods-use-this, object-shorthand, no-unused-vars, no-use-before-define, no-new, max-len, no-restricted-syntax, guard-for-in, no-continue */
|
|
/* jshint esversion: 6 */
|
|
|
|
require('./lib/utils/common_utils');
|
|
|
|
(() => {
|
|
const gfmRules = {
|
|
// The filters referenced in lib/banzai/pipeline/gfm_pipeline.rb convert
|
|
// GitLab Flavored Markdown (GFM) to HTML.
|
|
// These handlers consequently convert that same HTML to GFM to be copied to the clipboard.
|
|
// Every filter in lib/banzai/pipeline/gfm_pipeline.rb that generates HTML
|
|
// from GFM should have a handler here, in reverse order.
|
|
// The GFM-to-HTML-to-GFM cycle is tested in spec/features/copy_as_gfm_spec.rb.
|
|
InlineDiffFilter: {
|
|
'span.idiff.addition'(el, text) {
|
|
return `{+${text}+}`;
|
|
},
|
|
'span.idiff.deletion'(el, text) {
|
|
return `{-${text}-}`;
|
|
},
|
|
},
|
|
TaskListFilter: {
|
|
'input[type=checkbox].task-list-item-checkbox'(el, text) {
|
|
return `[${el.checked ? 'x' : ' '}]`;
|
|
},
|
|
},
|
|
ReferenceFilter: {
|
|
'.tooltip'(el, text) {
|
|
return '';
|
|
},
|
|
'a.gfm:not([data-link=true])'(el, text) {
|
|
return el.dataset.original || text;
|
|
},
|
|
},
|
|
AutolinkFilter: {
|
|
'a'(el, text) {
|
|
// Fallback on the regular MarkdownFilter's `a` handler.
|
|
if (text !== el.getAttribute('href')) return false;
|
|
|
|
return text;
|
|
},
|
|
},
|
|
TableOfContentsFilter: {
|
|
'ul.section-nav'(el, text) {
|
|
return '[[_TOC_]]';
|
|
},
|
|
},
|
|
EmojiFilter: {
|
|
'img.emoji'(el, text) {
|
|
return el.getAttribute('alt');
|
|
},
|
|
'gl-emoji'(el, text) {
|
|
return `:${el.getAttribute('data-name')}:`;
|
|
},
|
|
},
|
|
ImageLinkFilter: {
|
|
'a.no-attachment-icon'(el, text) {
|
|
return text;
|
|
},
|
|
},
|
|
VideoLinkFilter: {
|
|
'.video-container'(el, text) {
|
|
const videoEl = el.querySelector('video');
|
|
if (!videoEl) return false;
|
|
|
|
return CopyAsGFM.nodeToGFM(videoEl);
|
|
},
|
|
'video'(el, text) {
|
|
return `})`;
|
|
},
|
|
},
|
|
MathFilter: {
|
|
'pre.code.math[data-math-style=display]'(el, text) {
|
|
return `\`\`\`math\n${text.trim()}\n\`\`\``;
|
|
},
|
|
'code.code.math[data-math-style=inline]'(el, text) {
|
|
return `$\`${text}\`$`;
|
|
},
|
|
'span.katex-display span.katex-mathml'(el, text) {
|
|
const mathAnnotation = el.querySelector('annotation[encoding="application/x-tex"]');
|
|
if (!mathAnnotation) return false;
|
|
|
|
return `\`\`\`math\n${CopyAsGFM.nodeToGFM(mathAnnotation)}\n\`\`\``;
|
|
},
|
|
'span.katex-mathml'(el, text) {
|
|
const mathAnnotation = el.querySelector('annotation[encoding="application/x-tex"]');
|
|
if (!mathAnnotation) return false;
|
|
|
|
return `$\`${CopyAsGFM.nodeToGFM(mathAnnotation)}\`$`;
|
|
},
|
|
'span.katex-html'(el, text) {
|
|
// We don't want to include the content of this element in the copied text.
|
|
return '';
|
|
},
|
|
'annotation[encoding="application/x-tex"]'(el, text) {
|
|
return text.trim();
|
|
},
|
|
},
|
|
SanitizationFilter: {
|
|
'a[name]:not([href]):empty'(el, text) {
|
|
return el.outerHTML;
|
|
},
|
|
'dl'(el, text) {
|
|
let lines = text.trim().split('\n');
|
|
// Add two spaces to the front of subsequent list items lines,
|
|
// or leave the line entirely blank.
|
|
lines = lines.map((l) => {
|
|
const line = l.trim();
|
|
if (line.length === 0) return '';
|
|
|
|
return ` ${line}`;
|
|
});
|
|
|
|
return `<dl>\n${lines.join('\n')}\n</dl>`;
|
|
},
|
|
'sub, dt, dd, kbd, q, samp, var, ruby, rt, rp, abbr, summary, details'(el, text) {
|
|
const tag = el.nodeName.toLowerCase();
|
|
return `<${tag}>${text}</${tag}>`;
|
|
},
|
|
},
|
|
SyntaxHighlightFilter: {
|
|
'pre.code.highlight'(el, t) {
|
|
const text = t.trim();
|
|
|
|
let lang = el.getAttribute('lang');
|
|
if (lang === 'plaintext') {
|
|
lang = '';
|
|
}
|
|
|
|
// Prefixes lines with 4 spaces if the code contains triple backticks
|
|
if (lang === '' && text.match(/^```/gm)) {
|
|
return text.split('\n').map((l) => {
|
|
const line = l.trim();
|
|
if (line.length === 0) return '';
|
|
|
|
return ` ${line}`;
|
|
}).join('\n');
|
|
}
|
|
|
|
return `\`\`\`${lang}\n${text}\n\`\`\``;
|
|
},
|
|
'pre > code'(el, text) {
|
|
// Don't wrap code blocks in ``
|
|
return text;
|
|
},
|
|
},
|
|
MarkdownFilter: {
|
|
'br'(el, text) {
|
|
// Two spaces at the end of a line are turned into a BR
|
|
return ' ';
|
|
},
|
|
'code'(el, text) {
|
|
let backtickCount = 1;
|
|
const backtickMatch = text.match(/`+/);
|
|
if (backtickMatch) {
|
|
backtickCount = backtickMatch[0].length + 1;
|
|
}
|
|
|
|
const backticks = Array(backtickCount + 1).join('`');
|
|
const spaceOrNoSpace = backtickCount > 1 ? ' ' : '';
|
|
|
|
return backticks + spaceOrNoSpace + text + spaceOrNoSpace + backticks;
|
|
},
|
|
'blockquote'(el, text) {
|
|
return text.trim().split('\n').map(s => `> ${s}`.trim()).join('\n');
|
|
},
|
|
'img'(el, text) {
|
|
return `})`;
|
|
},
|
|
'a.anchor'(el, text) {
|
|
// Don't render a Markdown link for the anchor link inside a heading
|
|
return text;
|
|
},
|
|
'a'(el, text) {
|
|
return `[${text}](${el.getAttribute('href')})`;
|
|
},
|
|
'li'(el, text) {
|
|
const lines = text.trim().split('\n');
|
|
const firstLine = `- ${lines.shift()}`;
|
|
// Add four spaces to the front of subsequent list items lines,
|
|
// or leave the line entirely blank.
|
|
const nextLines = lines.map((s) => {
|
|
if (s.trim().length === 0) return '';
|
|
|
|
return ` ${s}`;
|
|
});
|
|
|
|
return `${firstLine}\n${nextLines.join('\n')}`;
|
|
},
|
|
'ul'(el, text) {
|
|
return text;
|
|
},
|
|
'ol'(el, text) {
|
|
// LIs get a `- ` prefix by default, which we replace by `1. ` for ordered lists.
|
|
return text.replace(/^- /mg, '1. ');
|
|
},
|
|
'h1'(el, text) {
|
|
return `# ${text.trim()}`;
|
|
},
|
|
'h2'(el, text) {
|
|
return `## ${text.trim()}`;
|
|
},
|
|
'h3'(el, text) {
|
|
return `### ${text.trim()}`;
|
|
},
|
|
'h4'(el, text) {
|
|
return `#### ${text.trim()}`;
|
|
},
|
|
'h5'(el, text) {
|
|
return `##### ${text.trim()}`;
|
|
},
|
|
'h6'(el, text) {
|
|
return `###### ${text.trim()}`;
|
|
},
|
|
'strong'(el, text) {
|
|
return `**${text}**`;
|
|
},
|
|
'em'(el, text) {
|
|
return `_${text}_`;
|
|
},
|
|
'del'(el, text) {
|
|
return `~~${text}~~`;
|
|
},
|
|
'sup'(el, text) {
|
|
return `^${text}`;
|
|
},
|
|
'hr'(el, text) {
|
|
return '-----';
|
|
},
|
|
'table'(el, text) {
|
|
const theadEl = el.querySelector('thead');
|
|
const tbodyEl = el.querySelector('tbody');
|
|
if (!theadEl || !tbodyEl) return false;
|
|
|
|
const theadText = CopyAsGFM.nodeToGFM(theadEl);
|
|
const tbodyText = CopyAsGFM.nodeToGFM(tbodyEl);
|
|
|
|
return theadText + tbodyText;
|
|
},
|
|
'thead'(el, text) {
|
|
const cells = _.map(el.querySelectorAll('th'), (cell) => {
|
|
let chars = CopyAsGFM.nodeToGFM(cell).trim().length + 2;
|
|
|
|
let before = '';
|
|
let after = '';
|
|
switch (cell.style.textAlign) {
|
|
case 'center':
|
|
before = ':';
|
|
after = ':';
|
|
chars -= 2;
|
|
break;
|
|
case 'right':
|
|
after = ':';
|
|
chars -= 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
chars = Math.max(chars, 3);
|
|
|
|
const middle = Array(chars + 1).join('-');
|
|
|
|
return before + middle + after;
|
|
});
|
|
|
|
return `${text}|${cells.join('|')}|`;
|
|
},
|
|
'tr'(el, text) {
|
|
const cells = _.map(el.querySelectorAll('td, th'), cell => CopyAsGFM.nodeToGFM(cell).trim());
|
|
return `| ${cells.join(' | ')} |`;
|
|
},
|
|
},
|
|
};
|
|
|
|
class CopyAsGFM {
|
|
constructor() {
|
|
$(document).on('copy', '.md, .wiki', this.handleCopy);
|
|
$(document).on('paste', '.js-gfm-input', this.handlePaste);
|
|
}
|
|
|
|
handleCopy(e) {
|
|
const clipboardData = e.originalEvent.clipboardData;
|
|
if (!clipboardData) return;
|
|
|
|
const documentFragment = window.gl.utils.getSelectedFragment();
|
|
if (!documentFragment) return;
|
|
|
|
// If the documentFragment contains more than just Markdown, don't copy as GFM.
|
|
if (documentFragment.querySelector('.md, .wiki')) return;
|
|
|
|
e.preventDefault();
|
|
clipboardData.setData('text/plain', documentFragment.textContent);
|
|
|
|
const gfm = CopyAsGFM.nodeToGFM(documentFragment);
|
|
clipboardData.setData('text/x-gfm', gfm);
|
|
}
|
|
|
|
handlePaste(e) {
|
|
const clipboardData = e.originalEvent.clipboardData;
|
|
if (!clipboardData) return;
|
|
|
|
const gfm = clipboardData.getData('text/x-gfm');
|
|
if (!gfm) return;
|
|
|
|
e.preventDefault();
|
|
|
|
window.gl.utils.insertText(e.target, gfm);
|
|
}
|
|
|
|
static nodeToGFM(node) {
|
|
if (node.nodeType === Node.TEXT_NODE) {
|
|
return node.textContent;
|
|
}
|
|
|
|
const text = this.innerGFM(node);
|
|
|
|
if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
|
|
return text;
|
|
}
|
|
|
|
for (const filter in gfmRules) {
|
|
const rules = gfmRules[filter];
|
|
|
|
for (const selector in rules) {
|
|
const func = rules[selector];
|
|
|
|
if (!window.gl.utils.nodeMatchesSelector(node, selector)) continue;
|
|
|
|
const result = func(node, text);
|
|
if (result === false) continue;
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return text;
|
|
}
|
|
|
|
static innerGFM(parentNode) {
|
|
const nodes = parentNode.childNodes;
|
|
|
|
const clonedParentNode = parentNode.cloneNode(true);
|
|
const clonedNodes = Array.prototype.slice.call(clonedParentNode.childNodes, 0);
|
|
|
|
for (let i = 0; i < nodes.length; i += 1) {
|
|
const node = nodes[i];
|
|
const clonedNode = clonedNodes[i];
|
|
|
|
const text = this.nodeToGFM(node);
|
|
|
|
// `clonedNode.replaceWith(text)` is not yet widely supported
|
|
clonedNode.parentNode.replaceChild(document.createTextNode(text), clonedNode);
|
|
}
|
|
|
|
return clonedParentNode.innerText || clonedParentNode.textContent;
|
|
}
|
|
}
|
|
|
|
window.gl = window.gl || {};
|
|
window.gl.CopyAsGFM = CopyAsGFM;
|
|
|
|
new CopyAsGFM();
|
|
})();
|