diff options
author | Douwe Maan <douwe@selenight.nl> | 2019-01-23 14:21:12 +0300 |
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committer | Douwe Maan <douwe@selenight.nl> | 2019-01-24 14:06:53 +0300 |
commit | 8a03dbf8b7e6776264cef9824aba1e58dcbaef70 (patch) | |
tree | 07612ef69e0c6404bcbf382225e23b67ca5c2cff /app | |
parent | a7e77e10fec4c37782edf09aafa12ae0c2d870df (diff) |
Use nodes and marks to power Copy-as-GFM
The spec needed to be updated because in some cases the resulting
Markdown is slightly different, though equally valid.
Diffstat (limited to 'app')
5 files changed, 174 insertions, 391 deletions
diff --git a/app/assets/javascripts/behaviors/markdown/copy_as_gfm.js b/app/assets/javascripts/behaviors/markdown/copy_as_gfm.js index fe02096d903..947d019c725 100644 --- a/app/assets/javascripts/behaviors/markdown/copy_as_gfm.js +++ b/app/assets/javascripts/behaviors/markdown/copy_as_gfm.js @@ -1,320 +1,8 @@ -/* eslint-disable object-shorthand, no-unused-vars, no-use-before-define, no-restricted-syntax, guard-for-in, no-continue */ - import $ from 'jquery'; -import _ from 'underscore'; -import { insertText, getSelectedFragment, nodeMatchesSelector } from '~/lib/utils/common_utils'; -import { placeholderImage } from '~/lazy_loader'; - -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) { - return `[${el.checked ? 'x' : ' '}]`; - }, - }, - ReferenceFilter: { - '.tooltip'(el) { - return ''; - }, - 'a.gfm:not([data-link=true])'(el, text) { - return el.dataset.original || text; - }, - }, - AutolinkFilter: { - a(el, text) { - // Fallback on the regular MarkdownFilter's `a` handler. - if (text !== el.getAttribute('href')) return false; - - return text; - }, - }, - TableOfContentsFilter: { - 'ul.section-nav'(el) { - return '[[_TOC_]]'; - }, - }, - EmojiFilter: { - 'img.emoji'(el) { - return el.getAttribute('alt'); - }, - 'gl-emoji'(el) { - return `:${el.getAttribute('data-name')}:`; - }, - }, - ImageLinkFilter: { - 'a.no-attachment-icon'(el, text) { - return text; - }, - }, - ImageLazyLoadFilter: { - img(el, text) { - return `![${el.getAttribute('alt')}](${el.getAttribute('src')})`; - }, - }, - VideoLinkFilter: { - '.video-container'(el) { - const videoEl = el.querySelector('video'); - if (!videoEl) return false; - - return CopyAsGFM.nodeToGFM(videoEl); - }, - video(el) { - return `![${el.dataset.title}](${el.getAttribute('src')})`; - }, - }, - MermaidFilter: { - 'svg.mermaid'(el, text) { - const sourceEl = el.querySelector('text.source'); - if (!sourceEl) return false; - - return `\`\`\`mermaid\n${CopyAsGFM.nodeToGFM(sourceEl)}\n\`\`\``; - }, - 'svg.mermaid style, svg.mermaid g'(el, text) { - // We don't want to include the content of these elements in the copied text. - return ''; - }, - }, - MathFilter: { - 'pre.code.math[data-math-style=display]'(el, text) { - return `\`\`\`math\n${text.trim()}\n\`\`\``; - }, - 'code.code.math[data-math-style=inline]'(el, text) { - return `$\`${text}\`$`; - }, - 'span.katex-display span.katex-mathml'(el) { - const mathAnnotation = el.querySelector('annotation[encoding="application/x-tex"]'); - if (!mathAnnotation) return false; - - return `\`\`\`math\n${CopyAsGFM.nodeToGFM(mathAnnotation)}\n\`\`\``; - }, - 'span.katex-mathml'(el) { - const mathAnnotation = el.querySelector('annotation[encoding="application/x-tex"]'); - if (!mathAnnotation) return false; - - return `$\`${CopyAsGFM.nodeToGFM(mathAnnotation)}\`$`; - }, - 'span.katex-html'(el) { - // 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) { - return el.outerHTML; - }, - dl(el, text) { - let lines = text - .replace(/\n\n/g, '\n') - .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>\n`; - }, - 'dt, dd, summary, details'(el, text) { - const tag = el.nodeName.toLowerCase(); - return `<${tag}>${text}</${tag}>\n`; - }, - 'sup, sub, kbd, q, samp, var, ruby, rt, rp, abbr'(el, text) { - const tag = el.nodeName.toLowerCase(); - return `<${tag}>${text}</${tag}>`; - }, - }, - SyntaxHighlightFilter: { - 'pre.code.highlight'(el, t) { - const text = t.trimRight(); - - let lang = el.getAttribute('lang'); - if (!lang || 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) { - // 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.trim() + spaceOrNoSpace + backticks; - }, - blockquote(el, text) { - return text - .trim() - .split('\n') - .map(s => `> ${s}`.trim()) - .join('\n'); - }, - img(el) { - const imageSrc = el.src; - const imageUrl = imageSrc && imageSrc !== placeholderImage ? imageSrc : el.dataset.src || ''; - return `![${el.getAttribute('alt')}](${imageUrl})`; - }, - 'a.anchor'(el, text) { - // Don't render a Markdown link for the anchor link inside a heading - return text; - }, - a(el, text) { - return `[${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(/^- /gm, '1. '); - }, - h1(el, text) { - return `# ${text.trim()}\n`; - }, - h2(el, text) { - return `## ${text.trim()}\n`; - }, - h3(el, text) { - return `### ${text.trim()}\n`; - }, - h4(el, text) { - return `#### ${text.trim()}\n`; - }, - h5(el, text) { - return `##### ${text.trim()}\n`; - }, - h6(el, text) { - return `###### ${text.trim()}\n`; - }, - strong(el, text) { - return `**${text}**`; - }, - em(el, text) { - return `_${text}_`; - }, - del(el, text) { - return `~~${text}~~`; - }, - hr(el) { - // extra leading \n is to ensure that there is a blank line between - // a list followed by an hr, otherwise this breaks old redcarpet rendering - return '\n-----\n'; - }, - p(el, text) { - return `${text.trim()}\n`; - }, - table(el) { - const theadEl = el.querySelector('thead'); - const tbodyEl = el.querySelector('tbody'); - if (!theadEl || !tbodyEl) return false; - - const theadText = CopyAsGFM.nodeToGFM(theadEl); - const tbodyText = CopyAsGFM.nodeToGFM(tbodyEl); - - return [theadText, tbodyText].join('\n'); - }, - thead(el, text) { - const cells = _.map(el.querySelectorAll('th'), cell => { - let chars = CopyAsGFM.nodeToGFM(cell).length + 2; - - let before = ''; - let after = ''; - const alignment = cell.align || cell.style.textAlign; - - switch (alignment) { - case 'center': - before = ':'; - after = ':'; - chars -= 2; - break; - case 'right': - after = ':'; - chars -= 1; - break; - default: - break; - } - - chars = Math.max(chars, 3); - - const middle = Array(chars + 1).join('-'); - - return before + middle + after; - }); - - const separatorRow = `|${cells.join('|')}|`; - - return [text, separatorRow].join('\n'); - }, - tr(el) { - const cellEls = el.querySelectorAll('td, th'); - if (cellEls.length === 0) return false; - - const cells = _.map(cellEls, cell => CopyAsGFM.nodeToGFM(cell)); - return `| ${cells.join(' | ')} |`; - }, - }, -}; +import { DOMParser } from 'prosemirror-model'; +import { getSelectedFragment } from '~/lib/utils/common_utils'; +import schema from './schema'; +import markdownSerializer from './serializer'; export class CopyAsGFM { constructor() { @@ -347,8 +35,13 @@ export class CopyAsGFM { e.preventDefault(); e.stopPropagation(); + const div = document.createElement('div'); + div.appendChild(el.cloneNode(true)); + const html = div.innerHTML; + clipboardData.setData('text/plain', el.textContent); clipboardData.setData('text/x-gfm', this.nodeToGFM(el)); + clipboardData.setData('text/html', html); } static pasteGFM(e) { @@ -361,7 +54,7 @@ export class CopyAsGFM { e.preventDefault(); - window.gl.utils.insertText(e.target, (textBefore, textAfter) => { + window.gl.utils.insertText(e.target, textBefore => { // If the text before the cursor contains an odd number of backticks, // we are either inside an inline code span that starts with 1 backtick // or a code block that starts with 3 backticks. @@ -443,75 +136,12 @@ export class CopyAsGFM { return codeElement; } - static nodeToGFM(node, respectWhitespaceParam = false) { - if (node.nodeType === Node.COMMENT_NODE) { - return ''; - } - - if (node.nodeType === Node.TEXT_NODE) { - return node.textContent; - } - - const respectWhitespace = - respectWhitespaceParam || (node.nodeName === 'PRE' || node.nodeName === 'CODE'); - - const text = this.innerGFM(node, respectWhitespace); - - 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 (!nodeMatchesSelector(node, selector)) continue; - - let result; - if (func.length === 2) { - // if `func` takes 2 arguments, it depends on text. - // if there is no text, we don't need to generate GFM for this node. - if (text.length === 0) continue; - - result = func(node, text); - } else { - result = func(node); - } - - if (result === false) continue; - - return result; - } - } - - return text; - } - - static innerGFM(parentNode, respectWhitespace = false) { - 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, respectWhitespace); - - // `clonedNode.replaceWith(text)` is not yet widely supported - clonedNode.parentNode.replaceChild(document.createTextNode(text), clonedNode); - } - - let nodeText = clonedParentNode.innerText || clonedParentNode.textContent; - - if (!respectWhitespace) { - nodeText = nodeText.trim(); - } + static nodeToGFM(node) { + const wrapEl = document.createElement('div'); + wrapEl.appendChild(node.cloneNode(true)); + const doc = DOMParser.fromSchema(schema).parse(wrapEl); - return nodeText; + return markdownSerializer.serialize(doc); } } diff --git a/app/assets/javascripts/behaviors/markdown/editor_extensions.js b/app/assets/javascripts/behaviors/markdown/editor_extensions.js new file mode 100644 index 00000000000..47e5fc65c48 --- /dev/null +++ b/app/assets/javascripts/behaviors/markdown/editor_extensions.js @@ -0,0 +1,106 @@ +import Doc from './nodes/doc'; +import Paragraph from './nodes/paragraph'; +import Text from './nodes/text'; + +import Blockquote from './nodes/blockquote'; +import CodeBlock from './nodes/code_block'; +import HardBreak from './nodes/hard_break'; +import Heading from './nodes/heading'; +import HorizontalRule from './nodes/horizontal_rule'; +import Image from './nodes/image'; + +import Table from './nodes/table'; +import TableHead from './nodes/table_head'; +import TableBody from './nodes/table_body'; +import TableHeaderRow from './nodes/table_header_row'; +import TableRow from './nodes/table_row'; +import TableCell from './nodes/table_cell'; + +import Emoji from './nodes/emoji'; +import Reference from './nodes/reference'; + +import TableOfContents from './nodes/table_of_contents'; +import Video from './nodes/video'; + +import BulletList from './nodes/bullet_list'; +import OrderedList from './nodes/ordered_list'; +import ListItem from './nodes/list_item'; + +import DescriptionList from './nodes/description_list'; +import DescriptionTerm from './nodes/description_term'; +import DescriptionDetails from './nodes/description_details'; + +import TaskList from './nodes/task_list'; +import OrderedTaskList from './nodes/ordered_task_list'; +import TaskListItem from './nodes/task_list_item'; + +import Summary from './nodes/summary'; +import Details from './nodes/details'; + +import Bold from './marks/bold'; +import Italic from './marks/italic'; +import Strike from './marks/strike'; +import InlineDiff from './marks/inline_diff'; + +import Link from './marks/link'; +import Code from './marks/code'; +import MathMark from './marks/math'; +import InlineHTML from './marks/inline_html'; + +// The filters referenced in lib/banzai/pipeline/gfm_pipeline.rb transform +// GitLab Flavored Markdown (GFM) to HTML. +// The nodes and marks referenced here transform 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 node or mark here. +// The GFM-to-HTML-to-GFM cycle is tested in spec/features/copy_as_gfm_spec.rb. + +export default [ + new Doc(), + new Paragraph(), + new Text(), + + new Blockquote(), + new CodeBlock(), + new HardBreak(), + new Heading({ maxLevel: 6 }), + new HorizontalRule(), + new Image(), + + new Table(), + new TableHead(), + new TableBody(), + new TableHeaderRow(), + new TableRow(), + new TableCell(), + + new Emoji(), + new Reference(), + + new TableOfContents(), + new Video(), + + new BulletList(), + new OrderedList(), + new ListItem(), + + new DescriptionList(), + new DescriptionTerm(), + new DescriptionDetails(), + + new TaskList(), + new OrderedTaskList(), + new TaskListItem(), + + new Summary(), + new Details(), + + new Bold(), + new Italic(), + new Strike(), + new InlineDiff(), + + new Link(), + new Code(), + new MathMark(), + new InlineHTML(), +]; diff --git a/app/assets/javascripts/behaviors/markdown/schema.js b/app/assets/javascripts/behaviors/markdown/schema.js new file mode 100644 index 00000000000..163182ab778 --- /dev/null +++ b/app/assets/javascripts/behaviors/markdown/schema.js @@ -0,0 +1,24 @@ +import { Schema } from 'prosemirror-model'; +import editorExtensions from './editor_extensions'; + +const nodes = editorExtensions + .filter(extension => extension.type === 'node') + .reduce( + (ns, { name, schema }) => ({ + ...ns, + [name]: schema, + }), + {}, + ); + +const marks = editorExtensions + .filter(extension => extension.type === 'mark') + .reduce( + (ms, { name, schema }) => ({ + ...ms, + [name]: schema, + }), + {}, + ); + +export default new Schema({ nodes, marks }); diff --git a/app/assets/javascripts/behaviors/markdown/serializer.js b/app/assets/javascripts/behaviors/markdown/serializer.js new file mode 100644 index 00000000000..70dbd8bd206 --- /dev/null +++ b/app/assets/javascripts/behaviors/markdown/serializer.js @@ -0,0 +1,24 @@ +import { MarkdownSerializer } from 'prosemirror-markdown'; +import editorExtensions from './editor_extensions'; + +const nodes = editorExtensions + .filter(extension => extension.type === 'node') + .reduce( + (ns, { name, toMarkdown }) => ({ + ...ns, + [name]: toMarkdown, + }), + {}, + ); + +const marks = editorExtensions + .filter(extension => extension.type === 'mark') + .reduce( + (ms, { name, toMarkdown }) => ({ + ...ms, + [name]: toMarkdown, + }), + {}, + ); + +export default new MarkdownSerializer(nodes, marks); diff --git a/app/assets/javascripts/behaviors/shortcuts/shortcuts_issuable.js b/app/assets/javascripts/behaviors/shortcuts/shortcuts_issuable.js index 2918e1486a7..0eb067d4963 100644 --- a/app/assets/javascripts/behaviors/shortcuts/shortcuts_issuable.js +++ b/app/assets/javascripts/behaviors/shortcuts/shortcuts_issuable.js @@ -1,6 +1,5 @@ import $ from 'jquery'; import Mousetrap from 'mousetrap'; -import _ from 'underscore'; import Sidebar from '../../right_sidebar'; import Shortcuts from './shortcuts'; import { CopyAsGFM } from '../markdown/copy_as_gfm'; @@ -63,18 +62,18 @@ export default class ShortcutsIssuable extends Shortcuts { } const el = CopyAsGFM.transformGFMSelection(documentFragment.cloneNode(true)); - const selected = CopyAsGFM.nodeToGFM(el); + const blockquoteEl = document.createElement('blockquote'); + blockquoteEl.appendChild(el); + const text = CopyAsGFM.nodeToGFM(blockquoteEl); - if (selected.trim() === '') { + if (text.trim() === '') { return false; } - const quote = _.map(selected.split('\n'), val => `${`> ${val}`.trim()}\n`); - // If replyField already has some content, add a newline before our quote const separator = ($replyField.val().trim() !== '' && '\n\n') || ''; $replyField - .val((a, current) => `${current}${separator}${quote.join('')}\n`) + .val((a, current) => `${current}${separator}${text}\n\n`) .trigger('input') .trigger('change'); |