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Diffstat (limited to 'app/assets/javascripts/copy_as_gfm.js.es6')
| -rw-r--r-- | app/assets/javascripts/copy_as_gfm.js.es6 | 358 |
1 files changed, 0 insertions, 358 deletions
diff --git a/app/assets/javascripts/copy_as_gfm.js.es6 b/app/assets/javascripts/copy_as_gfm.js.es6 deleted file mode 100644 index 4bd537a6f28..00000000000 --- a/app/assets/javascripts/copy_as_gfm.js.es6 +++ /dev/null @@ -1,358 +0,0 @@ -/* 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 `[${el.checked ? 'x' : ' '}]`; - }, - }, - ReferenceFilter: { - 'a.gfm:not([data-link=true])'(el, text) { - return el.dataset.original || text; - }, - }, - AutolinkFilter: { - 'a'(el, text) { - // Fallback on the regular MarkdownFilter's `a` handler. - if (text !== el.getAttribute('href')) return false; - - return text; - }, - }, - TableOfContentsFilter: { - 'ul.section-nav'(el, text) { - return '[[_TOC_]]'; - }, - }, - EmojiFilter: { - 'img.emoji'(el, text) { - return el.getAttribute('alt'); - }, - }, - ImageLinkFilter: { - 'a.no-attachment-icon'(el, text) { - return text; - }, - }, - VideoLinkFilter: { - '.video-container'(el, text) { - const videoEl = el.querySelector('video'); - if (!videoEl) return false; - - return CopyAsGFM.nodeToGFM(videoEl); - }, - 'video'(el, text) { - return `})`; - }, - }, - MathFilter: { - 'pre.code.math[data-math-style=display]'(el, text) { - return `\`\`\`math\n${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'(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(); -})(); |