From 36aa903d5a98ba5cf1d46b84c0a8fb3c2106bd8a Mon Sep 17 00:00:00 2001 From: Matt Bierner Date: Fri, 4 Oct 2019 17:15:11 -0700 Subject: [PATCH] Rewrite how we handle links in the md preview Try to simplify how we resolve links: - Move most logic out of the preview itself. - Simplify the amount of rewriting we do in the markdown engine --- .../markdown-language-features/media/index.js | 1012 +---------------- .../markdown-language-features/media/pre.js | 282 +---- .../markdown-language-features/package.json | 2 +- .../preview-src/index.ts | 34 +- .../src/features/preview.ts | 30 +- .../src/markdownEngine.ts | 57 +- .../src/util/links.ts | 26 +- 7 files changed, 96 insertions(+), 1347 deletions(-) diff --git a/extensions/markdown-language-features/media/index.js b/extensions/markdown-language-features/media/index.js index a17e886baff..666f4394dbb 100644 --- a/extensions/markdown-language-features/media/index.js +++ b/extensions/markdown-language-features/media/index.js @@ -1,1010 +1,2 @@ -/******/ (function(modules) { // webpackBootstrap -/******/ // The module cache -/******/ var installedModules = {}; -/******/ -/******/ // The require function -/******/ function __webpack_require__(moduleId) { -/******/ -/******/ // Check if module is in cache -/******/ if(installedModules[moduleId]) { -/******/ return installedModules[moduleId].exports; -/******/ } -/******/ // Create a new module (and put it into the cache) -/******/ var module = installedModules[moduleId] = { -/******/ i: moduleId, -/******/ l: false, -/******/ exports: {} -/******/ }; -/******/ -/******/ // Execute the module function -/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); -/******/ -/******/ // Flag the module as loaded -/******/ module.l = true; -/******/ -/******/ // Return the exports of the module -/******/ return module.exports; -/******/ } -/******/ -/******/ -/******/ // expose the modules object (__webpack_modules__) -/******/ __webpack_require__.m = modules; -/******/ -/******/ // expose the module cache -/******/ __webpack_require__.c = installedModules; -/******/ -/******/ // define getter function for harmony exports -/******/ __webpack_require__.d = function(exports, name, getter) { -/******/ if(!__webpack_require__.o(exports, name)) { -/******/ Object.defineProperty(exports, name, { -/******/ configurable: false, -/******/ enumerable: true, -/******/ get: getter -/******/ }); -/******/ } -/******/ }; -/******/ -/******/ // define __esModule on exports -/******/ __webpack_require__.r = function(exports) { -/******/ Object.defineProperty(exports, '__esModule', { value: true }); -/******/ }; -/******/ -/******/ // getDefaultExport function for compatibility with non-harmony modules -/******/ __webpack_require__.n = function(module) { -/******/ var getter = module && module.__esModule ? 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The debounced function comes with a `cancel` method to cancel - * delayed `func` invocations and a `flush` method to immediately invoke them. - * Provide `options` to indicate whether `func` should be invoked on the - * leading and/or trailing edge of the `wait` timeout. The `func` is invoked - * with the last arguments provided to the debounced function. 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result : trailingEdge(now()); - } - - function debounced() { - var time = now(), - isInvoking = shouldInvoke(time); - - lastArgs = arguments; - lastThis = this; - lastCallTime = time; - - if (isInvoking) { - if (timerId === undefined) { - return leadingEdge(lastCallTime); - } - if (maxing) { - // Handle invocations in a tight loop. - timerId = setTimeout(timerExpired, wait); - return invokeFunc(lastCallTime); - } - } - if (timerId === undefined) { - timerId = setTimeout(timerExpired, wait); - } - return result; - } - debounced.cancel = cancel; - debounced.flush = flush; - return debounced; -} - -/** - * Creates a throttled function that only invokes `func` at most once per - * every `wait` milliseconds. 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Subsequent calls to the throttled function return the - * result of the last `func` invocation. - * - * **Note:** If `leading` and `trailing` options are `true`, `func` is - * invoked on the trailing edge of the timeout only if the throttled function - * is invoked more than once during the `wait` timeout. - * - * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred - * until to the next tick, similar to `setTimeout` with a timeout of `0`. - * - * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) - * for details over the differences between `_.throttle` and `_.debounce`. - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Function - * @param {Function} func The function to throttle. - * @param {number} [wait=0] The number of milliseconds to throttle invocations to. - * @param {Object} [options={}] The options object. - * @param {boolean} [options.leading=true] - * Specify invoking on the leading edge of the timeout. - * @param {boolean} [options.trailing=true] - * Specify invoking on the trailing edge of the timeout. - * @returns {Function} Returns the new throttled function. - * @example - * - * // Avoid excessively updating the position while scrolling. - * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); - * - * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. - * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); - * jQuery(element).on('click', throttled); - * - * // Cancel the trailing throttled invocation. - * jQuery(window).on('popstate', throttled.cancel); - */ -function throttle(func, wait, options) { - var leading = true, - trailing = true; - - if (typeof func != 'function') { - throw new TypeError(FUNC_ERROR_TEXT); - } - if (isObject(options)) { - leading = 'leading' in options ? !!options.leading : leading; - trailing = 'trailing' in options ? !!options.trailing : trailing; - } - return debounce(func, wait, { - 'leading': leading, - 'maxWait': wait, - 'trailing': trailing - }); -} - -/** - * Checks if `value` is the - * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types) - * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) - * - * @static - * @memberOf _ - * @since 0.1.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an object, else `false`. - * @example - * - * _.isObject({}); - * // => true - * - * _.isObject([1, 2, 3]); - * // => true - * - * _.isObject(_.noop); - * // => true - * - * _.isObject(null); - * // => false - */ -function isObject(value) { - var type = typeof value; - return !!value && (type == 'object' || type == 'function'); -} - -/** - * Checks if `value` is object-like. A value is object-like if it's not `null` - * and has a `typeof` result of "object". - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is object-like, else `false`. - * @example - * - * _.isObjectLike({}); - * // => true - * - * _.isObjectLike([1, 2, 3]); - * // => true - * - * _.isObjectLike(_.noop); - * // => false - * - * _.isObjectLike(null); - * // => false - */ -function isObjectLike(value) { - return !!value && typeof value == 'object'; -} - -/** - * Checks if `value` is classified as a `Symbol` primitive or object. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a symbol, else `false`. - * @example - * - * _.isSymbol(Symbol.iterator); - * // => true - * - * _.isSymbol('abc'); - * // => false - */ -function isSymbol(value) { - return typeof value == 'symbol' || - (isObjectLike(value) && objectToString.call(value) == symbolTag); -} - -/** - * Converts `value` to a number. - * - * @static - * @memberOf _ - * @since 4.0.0 - * @category Lang - * @param {*} value The value to process. - * @returns {number} Returns the number. - * @example - * - * _.toNumber(3.2); - * // => 3.2 - * - * _.toNumber(Number.MIN_VALUE); - * // => 5e-324 - * - * _.toNumber(Infinity); - * // => Infinity - * - * _.toNumber('3.2'); - * // => 3.2 - */ -function toNumber(value) { - if (typeof value == 'number') { - return value; - } - if (isSymbol(value)) { - return NAN; - } - if (isObject(value)) { - var other = typeof value.valueOf == 'function' ? value.valueOf() : value; - value = isObject(other) ? 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NAN : +value); -} - -module.exports = throttle; - -/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"))) - -/***/ }), - -/***/ "./node_modules/webpack/buildin/global.js": -/*!***********************************!*\ - !*** (webpack)/buildin/global.js ***! - \***********************************/ -/*! no static exports found */ -/***/ (function(module, exports) { - -var g; - -// This works in non-strict mode -g = (function() { - return this; -})(); - -try { - // This works if eval is allowed (see CSP) - g = g || Function("return this")() || (1, eval)("this"); -} catch (e) { - // This works if the window reference is available - if (typeof window === "object") g = window; -} - -// g can still be undefined, but nothing to do about it... -// We return undefined, instead of nothing here, so it's -// easier to handle this case. if(!global) { ...} - -module.exports = g; - - -/***/ }), - -/***/ "./preview-src/activeLineMarker.ts": -/*!*****************************************!*\ - !*** ./preview-src/activeLineMarker.ts ***! - \*****************************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -Object.defineProperty(exports, "__esModule", { value: true }); -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. All rights reserved. - * Licensed under the MIT License. See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -const scroll_sync_1 = __webpack_require__(/*! ./scroll-sync */ "./preview-src/scroll-sync.ts"); -class ActiveLineMarker { - onDidChangeTextEditorSelection(line) { - const { previous } = scroll_sync_1.getElementsForSourceLine(line); - this._update(previous && previous.element); - } - _update(before) { - this._unmarkActiveElement(this._current); - this._markActiveElement(before); - this._current = before; - } - _unmarkActiveElement(element) { - if (!element) { - return; - } - element.className = element.className.replace(/\bcode-active-line\b/g, ''); - } - _markActiveElement(element) { - if (!element) { - return; - } - element.className += ' code-active-line'; - } -} -exports.ActiveLineMarker = ActiveLineMarker; - - -/***/ }), - -/***/ "./preview-src/events.ts": -/*!*******************************!*\ - !*** ./preview-src/events.ts ***! - \*******************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. All rights reserved. - * Licensed under the MIT License. See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -Object.defineProperty(exports, "__esModule", { value: true }); -function onceDocumentLoaded(f) { - if (document.readyState === 'loading' || document.readyState === 'uninitialized') { - document.addEventListener('DOMContentLoaded', f); - } - else { - f(); - } -} -exports.onceDocumentLoaded = onceDocumentLoaded; - - -/***/ }), - -/***/ "./preview-src/index.ts": -/*!******************************!*\ - !*** ./preview-src/index.ts ***! - \******************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. All rights reserved. - * Licensed under the MIT License. See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -Object.defineProperty(exports, "__esModule", { value: true }); -const activeLineMarker_1 = __webpack_require__(/*! ./activeLineMarker */ "./preview-src/activeLineMarker.ts"); -const events_1 = __webpack_require__(/*! ./events */ "./preview-src/events.ts"); -const messaging_1 = __webpack_require__(/*! ./messaging */ "./preview-src/messaging.ts"); -const scroll_sync_1 = __webpack_require__(/*! ./scroll-sync */ "./preview-src/scroll-sync.ts"); -const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts"); -const throttle = __webpack_require__(/*! lodash.throttle */ "./node_modules/lodash.throttle/index.js"); -let scrollDisabled = true; -const marker = new activeLineMarker_1.ActiveLineMarker(); -const settings = settings_1.getSettings(); -const vscode = acquireVsCodeApi(); -// Set VS Code state -let state = settings_1.getData('data-state'); -vscode.setState(state); -const messaging = messaging_1.createPosterForVsCode(vscode); -window.cspAlerter.setPoster(messaging); -window.styleLoadingMonitor.setPoster(messaging); -window.onload = () => { - updateImageSizes(); -}; -events_1.onceDocumentLoaded(() => { - if (settings.scrollPreviewWithEditor) { - setTimeout(() => { - // Try to scroll to fragment if available - if (state.fragment) { - const element = scroll_sync_1.getLineElementForFragment(state.fragment); - if (element) { - scrollDisabled = true; - scroll_sync_1.scrollToRevealSourceLine(element.line); - } - } - else { - const initialLine = +settings.line; - if (!isNaN(initialLine)) { - scrollDisabled = true; - scroll_sync_1.scrollToRevealSourceLine(initialLine); - } - } - }, 0); - } -}); -const onUpdateView = (() => { - const doScroll = throttle((line) => { - scrollDisabled = true; - scroll_sync_1.scrollToRevealSourceLine(line); - }, 50); - return (line, settings) => { - if (!isNaN(line)) { - settings.line = line; - doScroll(line); - } - }; -})(); -let updateImageSizes = throttle(() => { - const imageInfo = []; - let images = document.getElementsByTagName('img'); - if (images) { - let i; - for (i = 0; i < images.length; i++) { - const img = images[i]; - if (img.classList.contains('loading')) { - img.classList.remove('loading'); - } - imageInfo.push({ - id: img.id, - height: img.height, - width: img.width - }); - } - messaging.postMessage('cacheImageSizes', imageInfo); - } -}, 50); -window.addEventListener('resize', () => { - scrollDisabled = true; - updateImageSizes(); -}, true); -window.addEventListener('message', event => { - if (event.data.source !== settings.source) { - return; - } - switch (event.data.type) { - case 'onDidChangeTextEditorSelection': - marker.onDidChangeTextEditorSelection(event.data.line); - break; - case 'updateView': - onUpdateView(event.data.line, settings); - break; - } -}, false); -document.addEventListener('dblclick', event => { - if (!settings.doubleClickToSwitchToEditor) { - return; - } - // Ignore clicks on links - for (let node = event.target; node; node = node.parentNode) { - if (node.tagName === 'A') { - return; - } - } - const offset = event.pageY; - const line = scroll_sync_1.getEditorLineNumberForPageOffset(offset); - if (typeof line === 'number' && !isNaN(line)) { - messaging.postMessage('didClick', { line: Math.floor(line) }); - } -}); -document.addEventListener('click', event => { - if (!event) { - return; - } - let node = event.target; - while (node) { - if (node.tagName && node.tagName === 'A' && node.href) { - if (node.getAttribute('href').startsWith('#')) { - break; - } - if (node.href.startsWith('file://') || node.href.startsWith('vscode-resource:') || node.href.startsWith(settings.webviewResourceRoot)) { - const [path, fragment] = node.href - .replace(/^file:\/\//i, '') - .replace(/^vscode-resource:\/\/[^\/]+\//i, '') - .replace(new RegExp(`^${escapeRegExp(settings.webviewResourceRoot)}`)) - .split('#'); - messaging.postMessage('clickLink', { path, fragment }); - event.preventDefault(); - event.stopPropagation(); - break; - } - break; - } - node = node.parentNode; - } -}, true); -window.addEventListener('scroll', throttle(() => { - if (scrollDisabled) { - scrollDisabled = false; - } - else { - const line = scroll_sync_1.getEditorLineNumberForPageOffset(window.scrollY); - if (typeof line === 'number' && !isNaN(line)) { - messaging.postMessage('revealLine', { line }); - state.line = line; - vscode.setState(state); - } - } -}, 50)); -function escapeRegExp(text) { - return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&'); -} - - -/***/ }), - -/***/ "./preview-src/messaging.ts": -/*!**********************************!*\ - !*** ./preview-src/messaging.ts ***! - \**********************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. All rights reserved. - * Licensed under the MIT License. See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -Object.defineProperty(exports, "__esModule", { value: true }); -const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts"); -exports.createPosterForVsCode = (vscode) => { - return new class { - postMessage(type, body) { - vscode.postMessage({ - type, - source: settings_1.getSettings().source, - body - }); - } - }; -}; - - -/***/ }), - -/***/ "./preview-src/scroll-sync.ts": -/*!************************************!*\ - !*** ./preview-src/scroll-sync.ts ***! - \************************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. All rights reserved. - * Licensed under the MIT License. See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -Object.defineProperty(exports, "__esModule", { value: true }); -const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts"); -function clamp(min, max, value) { - return Math.min(max, Math.max(min, value)); -} -function clampLine(line) { - return clamp(0, settings_1.getSettings().lineCount - 1, line); -} -const getCodeLineElements = (() => { - let elements; - return () => { - if (!elements) { - elements = [{ element: document.body, line: 0 }]; - for (const element of document.getElementsByClassName('code-line')) { - const line = +element.getAttribute('data-line'); - if (!isNaN(line)) { - elements.push({ element: element, line }); - } - } - } - return elements; - }; -})(); -/** - * Find the html elements that map to a specific target line in the editor. - * - * If an exact match, returns a single element. If the line is between elements, - * returns the element prior to and the element after the given line. - */ -function getElementsForSourceLine(targetLine) { - const lineNumber = Math.floor(targetLine); - const lines = getCodeLineElements(); - let previous = lines[0] || null; - for (const entry of lines) { - if (entry.line === lineNumber) { - return { previous: entry, next: undefined }; - } - else if (entry.line > lineNumber) { - return { previous, next: entry }; - } - previous = entry; - } - return { previous }; -} -exports.getElementsForSourceLine = getElementsForSourceLine; -/** - * Find the html elements that are at a specific pixel offset on the page. - */ -function getLineElementsAtPageOffset(offset) { - const lines = getCodeLineElements(); - const position = offset - window.scrollY; - let lo = -1; - let hi = lines.length - 1; - while (lo + 1 < hi) { - const mid = Math.floor((lo + hi) / 2); - const bounds = lines[mid].element.getBoundingClientRect(); - if (bounds.top + bounds.height >= position) { - hi = mid; - } - else { - lo = mid; - } - } - const hiElement = lines[hi]; - const hiBounds = hiElement.element.getBoundingClientRect(); - if (hi >= 1 && hiBounds.top > position) { - const loElement = lines[lo]; - return { previous: loElement, next: hiElement }; - } - return { previous: hiElement }; -} -exports.getLineElementsAtPageOffset = getLineElementsAtPageOffset; -/** - * Attempt to reveal the element for a source line in the editor. - */ -function scrollToRevealSourceLine(line) { - if (!settings_1.getSettings().scrollPreviewWithEditor) { - return; - } - if (line <= 0) { - window.scroll(window.scrollX, 0); - return; - } - const { previous, next } = getElementsForSourceLine(line); - if (!previous) { - return; - } - let scrollTo = 0; - const rect = previous.element.getBoundingClientRect(); - const previousTop = rect.top; - if (next && next.line !== previous.line) { - // Between two elements. Go to percentage offset between them. - const betweenProgress = (line - previous.line) / (next.line - previous.line); - const elementOffset = next.element.getBoundingClientRect().top - previousTop; - scrollTo = previousTop + betweenProgress * elementOffset; - } - else { - const progressInElement = line - Math.floor(line); - scrollTo = previousTop + (rect.height * progressInElement); - } - window.scroll(window.scrollX, Math.max(1, window.scrollY + scrollTo)); -} -exports.scrollToRevealSourceLine = scrollToRevealSourceLine; -function getEditorLineNumberForPageOffset(offset) { - const { previous, next } = getLineElementsAtPageOffset(offset); - if (previous) { - const previousBounds = previous.element.getBoundingClientRect(); - const offsetFromPrevious = (offset - window.scrollY - previousBounds.top); - if (next) { - const progressBetweenElements = offsetFromPrevious / (next.element.getBoundingClientRect().top - previousBounds.top); - const line = previous.line + progressBetweenElements * (next.line - previous.line); - return clampLine(line); - } - else { - const progressWithinElement = offsetFromPrevious / (previousBounds.height); - const line = previous.line + progressWithinElement; - return clampLine(line); - } - } - return null; -} -exports.getEditorLineNumberForPageOffset = getEditorLineNumberForPageOffset; -/** - * Try to find the html element by using a fragment id - */ -function getLineElementForFragment(fragment) { - return getCodeLineElements().find((element) => { - return element.element.id === fragment; - }); -} -exports.getLineElementForFragment = getLineElementForFragment; - - -/***/ }), - -/***/ "./preview-src/settings.ts": -/*!*********************************!*\ - !*** ./preview-src/settings.ts ***! - \*********************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. All rights reserved. - * Licensed under the MIT License. See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -Object.defineProperty(exports, "__esModule", { value: true }); -let cachedSettings = undefined; -function getData(key) { - const element = document.getElementById('vscode-markdown-preview-data'); - if (element) { - const data = element.getAttribute(key); - if (data) { - return JSON.parse(data); - } - } - throw new Error(`Could not load data for ${key}`); -} -exports.getData = getData; -function getSettings() { - if (cachedSettings) { - return cachedSettings; - } - cachedSettings = getData('data-settings'); - if (cachedSettings) { - return cachedSettings; - } - throw new Error('Could not load settings'); -} -exports.getSettings = getSettings; - - -/***/ }) - -/******/ }); -//# 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Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastInvokeTime = 0;\n    lastArgs = lastCallTime = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if (isObject(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return debounce(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nmodule.exports = throttle;\n","var g;\r\n\r\n// This works in non-strict mode\r\ng = (function() {\r\n\treturn this;\r\n})();\r\n\r\ntry {\r\n\t// This works if eval is allowed (see CSP)\r\n\tg = g || Function(\"return this\")() || (1, eval)(\"this\");\r\n} catch (e) {\r\n\t// This works if the window reference is available\r\n\tif (typeof window === \"object\") g = window;\r\n}\r\n\r\n// g can still be undefined, but nothing to do about it...\r\n// We return undefined, instead of nothing here, so it's\r\n// easier to handle this case. if(!global) { ...}\r\n\r\nmodule.exports = g;\r\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nconst scroll_sync_1 = require(\"./scroll-sync\");\nclass ActiveLineMarker {\n    onDidChangeTextEditorSelection(line) {\n        const { previous } = scroll_sync_1.getElementsForSourceLine(line);\n        this._update(previous && previous.element);\n    }\n    _update(before) {\n        this._unmarkActiveElement(this._current);\n        this._markActiveElement(before);\n        this._current = before;\n    }\n    _unmarkActiveElement(element) {\n        if (!element) {\n            return;\n        }\n        element.className = element.className.replace(/\\bcode-active-line\\b/g, '');\n    }\n    _markActiveElement(element) {\n        if (!element) {\n            return;\n        }\n        element.className += ' code-active-line';\n    }\n}\nexports.ActiveLineMarker = ActiveLineMarker;\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nfunction onceDocumentLoaded(f) {\n    if (document.readyState === 'loading' || document.readyState === 'uninitialized') {\n        document.addEventListener('DOMContentLoaded', f);\n    }\n    else {\n        f();\n    }\n}\nexports.onceDocumentLoaded = onceDocumentLoaded;\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst activeLineMarker_1 = require(\"./activeLineMarker\");\nconst events_1 = require(\"./events\");\nconst messaging_1 = require(\"./messaging\");\nconst scroll_sync_1 = require(\"./scroll-sync\");\nconst settings_1 = require(\"./settings\");\nconst throttle = require(\"lodash.throttle\");\nlet scrollDisabled = true;\nconst marker = new activeLineMarker_1.ActiveLineMarker();\nconst settings = settings_1.getSettings();\nconst vscode = acquireVsCodeApi();\n// Set VS Code state\nlet state = settings_1.getData('data-state');\nvscode.setState(state);\nconst messaging = messaging_1.createPosterForVsCode(vscode);\nwindow.cspAlerter.setPoster(messaging);\nwindow.styleLoadingMonitor.setPoster(messaging);\nwindow.onload = () => {\n    updateImageSizes();\n};\nevents_1.onceDocumentLoaded(() => {\n    if (settings.scrollPreviewWithEditor) {\n        setTimeout(() => {\n            // Try to scroll to fragment if available\n            if (state.fragment) {\n                const element = scroll_sync_1.getLineElementForFragment(state.fragment);\n                if (element) {\n                    scrollDisabled = true;\n                    scroll_sync_1.scrollToRevealSourceLine(element.line);\n                }\n            }\n            else {\n                const initialLine = +settings.line;\n                if (!isNaN(initialLine)) {\n                    scrollDisabled = true;\n                    scroll_sync_1.scrollToRevealSourceLine(initialLine);\n                }\n            }\n        }, 0);\n    }\n});\nconst onUpdateView = (() => {\n    const doScroll = throttle((line) => {\n        scrollDisabled = true;\n        scroll_sync_1.scrollToRevealSourceLine(line);\n    }, 50);\n    return (line, settings) => {\n        if (!isNaN(line)) {\n            settings.line = line;\n            doScroll(line);\n        }\n    };\n})();\nlet updateImageSizes = throttle(() => {\n    const imageInfo = [];\n    let images = document.getElementsByTagName('img');\n    if (images) {\n        let i;\n        for (i = 0; i < images.length; i++) {\n            const img = images[i];\n            if (img.classList.contains('loading')) {\n                img.classList.remove('loading');\n            }\n            imageInfo.push({\n                id: img.id,\n                height: img.height,\n                width: img.width\n            });\n        }\n        messaging.postMessage('cacheImageSizes', imageInfo);\n    }\n}, 50);\nwindow.addEventListener('resize', () => {\n    scrollDisabled = true;\n    updateImageSizes();\n}, true);\nwindow.addEventListener('message', event => {\n    if (event.data.source !== settings.source) {\n        return;\n    }\n    switch (event.data.type) {\n        case 'onDidChangeTextEditorSelection':\n            marker.onDidChangeTextEditorSelection(event.data.line);\n            break;\n        case 'updateView':\n            onUpdateView(event.data.line, settings);\n            break;\n    }\n}, false);\ndocument.addEventListener('dblclick', event => {\n    if (!settings.doubleClickToSwitchToEditor) {\n        return;\n    }\n    // Ignore clicks on links\n    for (let node = event.target; node; node = node.parentNode) {\n        if (node.tagName === 'A') {\n            return;\n        }\n    }\n    const offset = event.pageY;\n    const line = scroll_sync_1.getEditorLineNumberForPageOffset(offset);\n    if (typeof line === 'number' && !isNaN(line)) {\n        messaging.postMessage('didClick', { line: Math.floor(line) });\n    }\n});\ndocument.addEventListener('click', event => {\n    if (!event) {\n        return;\n    }\n    let node = event.target;\n    while (node) {\n        if (node.tagName && node.tagName === 'A' && node.href) {\n            if (node.getAttribute('href').startsWith('#')) {\n                break;\n            }\n            if (node.href.startsWith('file://') || node.href.startsWith('vscode-resource:') || node.href.startsWith(settings.webviewResourceRoot)) {\n                const [path, fragment] = node.href\n                    .replace(/^file:\\/\\//i, '')\n                    .replace(/^vscode-resource:\\/\\/[^\\/]+\\//i, '')\n                    .replace(new RegExp(`^${escapeRegExp(settings.webviewResourceRoot)}`))\n                    .split('#');\n                messaging.postMessage('clickLink', { path, fragment });\n                event.preventDefault();\n                event.stopPropagation();\n                break;\n            }\n            break;\n        }\n        node = node.parentNode;\n    }\n}, true);\nwindow.addEventListener('scroll', throttle(() => {\n    if (scrollDisabled) {\n        scrollDisabled = false;\n    }\n    else {\n        const line = scroll_sync_1.getEditorLineNumberForPageOffset(window.scrollY);\n        if (typeof line === 'number' && !isNaN(line)) {\n            messaging.postMessage('revealLine', { line });\n            state.line = line;\n            vscode.setState(state);\n        }\n    }\n}, 50));\nfunction escapeRegExp(text) {\n    return text.replace(/[-[\\]{}()*+?.,\\\\^$|#\\s]/g, '\\\\$&');\n}\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst settings_1 = require(\"./settings\");\nexports.createPosterForVsCode = (vscode) => {\n    return new class {\n        postMessage(type, body) {\n            vscode.postMessage({\n                type,\n                source: settings_1.getSettings().source,\n                body\n            });\n        }\n    };\n};\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst settings_1 = require(\"./settings\");\nfunction clamp(min, max, value) {\n    return Math.min(max, Math.max(min, value));\n}\nfunction clampLine(line) {\n    return clamp(0, settings_1.getSettings().lineCount - 1, line);\n}\nconst getCodeLineElements = (() => {\n    let elements;\n    return () => {\n        if (!elements) {\n            elements = [{ element: document.body, line: 0 }];\n            for (const element of document.getElementsByClassName('code-line')) {\n                const line = +element.getAttribute('data-line');\n                if (!isNaN(line)) {\n                    elements.push({ element: element, line });\n                }\n            }\n        }\n        return elements;\n    };\n})();\n/**\n * Find the html elements that map to a specific target line in the editor.\n *\n * If an exact match, returns a single element. If the line is between elements,\n * returns the element prior to and the element after the given line.\n */\nfunction getElementsForSourceLine(targetLine) {\n    const lineNumber = Math.floor(targetLine);\n    const lines = getCodeLineElements();\n    let previous = lines[0] || null;\n    for (const entry of lines) {\n        if (entry.line === lineNumber) {\n            return { previous: entry, next: undefined };\n        }\n        else if (entry.line > lineNumber) {\n            return { previous, next: entry };\n        }\n        previous = entry;\n    }\n    return { previous };\n}\nexports.getElementsForSourceLine = getElementsForSourceLine;\n/**\n * Find the html elements that are at a specific pixel offset on the page.\n */\nfunction getLineElementsAtPageOffset(offset) {\n    const lines = getCodeLineElements();\n    const position = offset - window.scrollY;\n    let lo = -1;\n    let hi = lines.length - 1;\n    while (lo + 1 < hi) {\n        const mid = Math.floor((lo + hi) / 2);\n        const bounds = lines[mid].element.getBoundingClientRect();\n        if (bounds.top + bounds.height >= position) {\n            hi = mid;\n        }\n        else {\n            lo = mid;\n        }\n    }\n    const hiElement = lines[hi];\n    const hiBounds = hiElement.element.getBoundingClientRect();\n    if (hi >= 1 && hiBounds.top > position) {\n        const loElement = lines[lo];\n        return { previous: loElement, next: hiElement };\n    }\n    return { previous: hiElement };\n}\nexports.getLineElementsAtPageOffset = getLineElementsAtPageOffset;\n/**\n * Attempt to reveal the element for a source line in the editor.\n */\nfunction scrollToRevealSourceLine(line) {\n    if (!settings_1.getSettings().scrollPreviewWithEditor) {\n        return;\n    }\n    if (line <= 0) {\n        window.scroll(window.scrollX, 0);\n        return;\n    }\n    const { previous, next } = getElementsForSourceLine(line);\n    if (!previous) {\n        return;\n    }\n    let scrollTo = 0;\n    const rect = previous.element.getBoundingClientRect();\n    const previousTop = rect.top;\n    if (next && next.line !== previous.line) {\n        // Between two elements. Go to percentage offset between them.\n        const betweenProgress = (line - previous.line) / (next.line - previous.line);\n        const elementOffset = next.element.getBoundingClientRect().top - previousTop;\n        scrollTo = previousTop + betweenProgress * elementOffset;\n    }\n    else {\n        const progressInElement = line - Math.floor(line);\n        scrollTo = previousTop + (rect.height * progressInElement);\n    }\n    window.scroll(window.scrollX, Math.max(1, window.scrollY + scrollTo));\n}\nexports.scrollToRevealSourceLine = scrollToRevealSourceLine;\nfunction getEditorLineNumberForPageOffset(offset) {\n    const { previous, next } = getLineElementsAtPageOffset(offset);\n    if (previous) {\n        const previousBounds = previous.element.getBoundingClientRect();\n        const offsetFromPrevious = (offset - window.scrollY - previousBounds.top);\n        if (next) {\n            const progressBetweenElements = offsetFromPrevious / (next.element.getBoundingClientRect().top - previousBounds.top);\n            const line = previous.line + progressBetweenElements * (next.line - previous.line);\n            return clampLine(line);\n        }\n        else {\n            const progressWithinElement = offsetFromPrevious / (previousBounds.height);\n            const line = previous.line + progressWithinElement;\n            return clampLine(line);\n        }\n    }\n    return null;\n}\nexports.getEditorLineNumberForPageOffset = getEditorLineNumberForPageOffset;\n/**\n * Try to find the html element by using a fragment id\n */\nfunction getLineElementForFragment(fragment) {\n    return getCodeLineElements().find((element) => {\n        return element.element.id === fragment;\n    });\n}\nexports.getLineElementForFragment = getLineElementForFragment;\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. 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If the line is between elements,\n * returns the element prior to and the element after the given line.\n */\nfunction getElementsForSourceLine(targetLine) {\n    const lineNumber = Math.floor(targetLine);\n    const lines = getCodeLineElements();\n    let previous = lines[0] || null;\n    for (const entry of lines) {\n        if (entry.line === lineNumber) {\n            return { previous: entry, next: undefined };\n        }\n        else if (entry.line > lineNumber) {\n            return { previous, next: entry };\n        }\n        previous = entry;\n    }\n    return { previous };\n}\nexports.getElementsForSourceLine = getElementsForSourceLine;\n/**\n * Find the html elements that are at a specific pixel offset on the page.\n */\nfunction getLineElementsAtPageOffset(offset) {\n    const lines = getCodeLineElements();\n    const position = offset - window.scrollY;\n    let lo = -1;\n    let hi = lines.length - 1;\n    while (lo + 1 < hi) {\n        const mid = Math.floor((lo + hi) / 2);\n        const bounds = lines[mid].element.getBoundingClientRect();\n        if (bounds.top + bounds.height >= position) {\n            hi = mid;\n        }\n        else {\n            lo = mid;\n        }\n    }\n    const hiElement = lines[hi];\n    const hiBounds = hiElement.element.getBoundingClientRect();\n    if (hi >= 1 && hiBounds.top > position) {\n        const loElement = lines[lo];\n        return { previous: loElement, next: hiElement };\n    }\n    return { previous: hiElement };\n}\nexports.getLineElementsAtPageOffset = getLineElementsAtPageOffset;\n/**\n * Attempt to reveal the element for a source line in the editor.\n */\nfunction scrollToRevealSourceLine(line) {\n    if (!settings_1.getSettings().scrollPreviewWithEditor) {\n        return;\n    }\n    if (line <= 0) {\n        window.scroll(window.scrollX, 0);\n        return;\n    }\n    const { previous, next } = getElementsForSourceLine(line);\n    if (!previous) {\n        return;\n    }\n    let scrollTo = 0;\n    const rect = previous.element.getBoundingClientRect();\n    const previousTop = rect.top;\n    if (next && next.line !== previous.line) {\n        // Between two elements. Go to percentage offset between them.\n        const betweenProgress = (line - previous.line) / (next.line - previous.line);\n        const elementOffset = next.element.getBoundingClientRect().top - previousTop;\n        scrollTo = previousTop + betweenProgress * elementOffset;\n    }\n    else {\n        const progressInElement = line - Math.floor(line);\n        scrollTo = previousTop + (rect.height * progressInElement);\n    }\n    window.scroll(window.scrollX, Math.max(1, window.scrollY + scrollTo));\n}\nexports.scrollToRevealSourceLine = scrollToRevealSourceLine;\nfunction getEditorLineNumberForPageOffset(offset) {\n    const { previous, next } = getLineElementsAtPageOffset(offset);\n    if (previous) {\n        const previousBounds = previous.element.getBoundingClientRect();\n        const offsetFromPrevious = (offset - window.scrollY - previousBounds.top);\n        if (next) {\n            const progressBetweenElements = offsetFromPrevious / (next.element.getBoundingClientRect().top - previousBounds.top);\n            const line = previous.line + progressBetweenElements * (next.line - previous.line);\n            return clampLine(line);\n        }\n        else {\n            const progressWithinElement = offsetFromPrevious / (previousBounds.height);\n            const line = previous.line + progressWithinElement;\n            return clampLine(line);\n        }\n    }\n    return null;\n}\nexports.getEditorLineNumberForPageOffset = getEditorLineNumberForPageOffset;\n/**\n * Try to find the html element by using a fragment id\n */\nfunction getLineElementForFragment(fragment) {\n    return getCodeLineElements().find((element) => {\n        return element.element.id === fragment;\n    });\n}\nexports.getLineElementForFragment = getLineElementForFragment;\n","var g;\r\n\r\n// This works in non-strict mode\r\ng = (function() {\r\n\treturn this;\r\n})();\r\n\r\ntry {\r\n\t// This works if eval is allowed (see CSP)\r\n\tg = g || Function(\"return this\")() || (1, eval)(\"this\");\r\n} catch (e) {\r\n\t// This works if the window reference is available\r\n\tif (typeof window === \"object\") g = window;\r\n}\r\n\r\n// g can still be undefined, but nothing to do about it...\r\n// We return undefined, instead of nothing here, so it's\r\n// easier to handle this case. if(!global) { ...}\r\n\r\nmodule.exports = g;\r\n","/**\n * lodash (Custom Build) <https://lodash.com/>\n * Build: `lodash modularize exports=\"npm\" -o ./`\n * Copyright jQuery Foundation and other contributors <https://jquery.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\nvar now = function() {\n  return root.Date.now();\n};\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastInvokeTime = 0;\n    lastArgs = lastCallTime = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if (isObject(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return debounce(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nmodule.exports = throttle;\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst settings_1 = require(\"./settings\");\nexports.createPosterForVsCode = (vscode) => {\n    return new class {\n        postMessage(type, body) {\n            vscode.postMessage({\n                type,\n                source: settings_1.getSettings().source,\n                body\n            });\n        }\n    };\n};\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nfunction onceDocumentLoaded(f) {\n    if (document.readyState === 'loading' || document.readyState === 'uninitialized') {\n        document.addEventListener('DOMContentLoaded', f);\n    }\n    else {\n        f();\n    }\n}\nexports.onceDocumentLoaded = onceDocumentLoaded;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nconst scroll_sync_1 = require(\"./scroll-sync\");\nclass ActiveLineMarker {\n    onDidChangeTextEditorSelection(line) {\n        const { previous } = scroll_sync_1.getElementsForSourceLine(line);\n        this._update(previous && previous.element);\n    }\n    _update(before) {\n        this._unmarkActiveElement(this._current);\n        this._markActiveElement(before);\n        this._current = before;\n    }\n    _unmarkActiveElement(element) {\n        if (!element) {\n            return;\n        }\n        element.className = element.className.replace(/\\bcode-active-line\\b/g, '');\n    }\n    _markActiveElement(element) {\n        if (!element) {\n            return;\n        }\n        element.className += ' code-active-line';\n    }\n}\nexports.ActiveLineMarker = ActiveLineMarker;\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst activeLineMarker_1 = require(\"./activeLineMarker\");\nconst events_1 = require(\"./events\");\nconst messaging_1 = require(\"./messaging\");\nconst scroll_sync_1 = require(\"./scroll-sync\");\nconst settings_1 = require(\"./settings\");\nconst throttle = require(\"lodash.throttle\");\nlet scrollDisabled = true;\nconst marker = new activeLineMarker_1.ActiveLineMarker();\nconst settings = settings_1.getSettings();\nconst vscode = acquireVsCodeApi();\n// Set VS Code state\nlet state = settings_1.getData('data-state');\nvscode.setState(state);\nconst messaging = messaging_1.createPosterForVsCode(vscode);\nwindow.cspAlerter.setPoster(messaging);\nwindow.styleLoadingMonitor.setPoster(messaging);\nwindow.onload = () => {\n    updateImageSizes();\n};\nevents_1.onceDocumentLoaded(() => {\n    if (settings.scrollPreviewWithEditor) {\n        setTimeout(() => {\n            // Try to scroll to fragment if available\n            if (state.fragment) {\n                const element = scroll_sync_1.getLineElementForFragment(state.fragment);\n                if (element) {\n                    scrollDisabled = true;\n                    scroll_sync_1.scrollToRevealSourceLine(element.line);\n                }\n            }\n            else {\n                const initialLine = +settings.line;\n                if (!isNaN(initialLine)) {\n                    scrollDisabled = true;\n                    scroll_sync_1.scrollToRevealSourceLine(initialLine);\n                }\n            }\n        }, 0);\n    }\n});\nconst onUpdateView = (() => {\n    const doScroll = throttle((line) => {\n        scrollDisabled = true;\n        scroll_sync_1.scrollToRevealSourceLine(line);\n    }, 50);\n    return (line, settings) => {\n        if (!isNaN(line)) {\n            settings.line = line;\n            doScroll(line);\n        }\n    };\n})();\nlet updateImageSizes = throttle(() => {\n    const imageInfo = [];\n    let images = document.getElementsByTagName('img');\n    if (images) {\n        let i;\n        for (i = 0; i < images.length; i++) {\n            const img = images[i];\n            if (img.classList.contains('loading')) {\n                img.classList.remove('loading');\n            }\n            imageInfo.push({\n                id: img.id,\n                height: img.height,\n                width: img.width\n            });\n        }\n        messaging.postMessage('cacheImageSizes', imageInfo);\n    }\n}, 50);\nwindow.addEventListener('resize', () => {\n    scrollDisabled = true;\n    updateImageSizes();\n}, true);\nwindow.addEventListener('message', event => {\n    if (event.data.source !== settings.source) {\n        return;\n    }\n    switch (event.data.type) {\n        case 'onDidChangeTextEditorSelection':\n            marker.onDidChangeTextEditorSelection(event.data.line);\n            break;\n        case 'updateView':\n            onUpdateView(event.data.line, settings);\n            break;\n    }\n}, false);\ndocument.addEventListener('dblclick', event => {\n    if (!settings.doubleClickToSwitchToEditor) {\n        return;\n    }\n    // Ignore clicks on links\n    for (let node = event.target; node; node = node.parentNode) {\n        if (node.tagName === 'A') {\n            return;\n        }\n    }\n    const offset = event.pageY;\n    const line = scroll_sync_1.getEditorLineNumberForPageOffset(offset);\n    if (typeof line === 'number' && !isNaN(line)) {\n        messaging.postMessage('didClick', { line: Math.floor(line) });\n    }\n});\nconst passThroughLinkSchemes = ['http:', 'https:', 'mailto:', 'vscode:', 'vscode-insiders'];\ndocument.addEventListener('click', event => {\n    if (!event) {\n        return;\n    }\n    let node = event.target;\n    while (node) {\n        if (node.tagName && node.tagName === 'A' && node.href) {\n            if (node.getAttribute('href').startsWith('#')) {\n                return;\n            }\n            // Pass through known schemes\n            if (passThroughLinkSchemes.some(scheme => node.href.startsWith(scheme))) {\n                return;\n            }\n            const hrefText = node.getAttribute('data-href') || node.getAttribute('href');\n            // If original link doesn't look like a url, delegate back to VS Code to resolve\n            if (!/^[a-z\\-]+:/i.test(hrefText)) {\n                messaging.postMessage('openLink', { href: hrefText });\n                event.preventDefault();\n                event.stopPropagation();\n                return;\n            }\n            return;\n        }\n        node = node.parentNode;\n    }\n}, true);\nwindow.addEventListener('scroll', throttle(() => {\n    if (scrollDisabled) {\n        scrollDisabled = false;\n    }\n    else {\n        const line = scroll_sync_1.getEditorLineNumberForPageOffset(window.scrollY);\n        if (typeof line === 'number' && !isNaN(line)) {\n            messaging.postMessage('revealLine', { line });\n            state.line = line;\n            vscode.setState(state);\n        }\n    }\n}, 50));\n"],"sourceRoot":""} \ No newline at end of file diff --git a/extensions/markdown-language-features/media/pre.js b/extensions/markdown-language-features/media/pre.js index 5c9c7fb3b8b..28098246c05 100644 --- a/extensions/markdown-language-features/media/pre.js +++ b/extensions/markdown-language-features/media/pre.js @@ -1,280 +1,2 @@ -/******/ (function(modules) { // webpackBootstrap -/******/ // The module cache -/******/ var installedModules = {}; 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See License.txt in the project root for license information. - *--------------------------------------------------------------------------------------------*/ -Object.defineProperty(exports, "__esModule", { value: true }); -const settings_1 = __webpack_require__(/*! ./settings */ "./preview-src/settings.ts"); -const strings_1 = __webpack_require__(/*! ./strings */ "./preview-src/strings.ts"); -/** - * Shows an alert when there is a content security policy violation. - */ -class CspAlerter { - constructor() { - this.didShow = false; - this.didHaveCspWarning = false; - document.addEventListener('securitypolicyviolation', () => { - this.onCspWarning(); - }); - window.addEventListener('message', (event) => { - if (event && event.data && event.data.name === 'vscode-did-block-svg') { - this.onCspWarning(); - } - }); - } - setPoster(poster) { - this.messaging = poster; - if (this.didHaveCspWarning) { - this.showCspWarning(); - } - } - onCspWarning() { - this.didHaveCspWarning = true; - this.showCspWarning(); - } - showCspWarning() { - const strings = strings_1.getStrings(); - const settings = settings_1.getSettings(); - if (this.didShow || settings.disableSecurityWarnings || !this.messaging) { - return; - } - this.didShow = true; - const notification = document.createElement('a'); - notification.innerText = strings.cspAlertMessageText; - notification.setAttribute('id', 'code-csp-warning'); - notification.setAttribute('title', strings.cspAlertMessageTitle); - notification.setAttribute('role', 'button'); - notification.setAttribute('aria-label', strings.cspAlertMessageLabel); - notification.onclick = () => { - this.messaging.postMessage('showPreviewSecuritySelector', { source: settings.source }); - }; - document.body.appendChild(notification); - } -} -exports.CspAlerter = CspAlerter; - - -/***/ }), - -/***/ "./preview-src/loading.ts": -/*!********************************!*\ - !*** ./preview-src/loading.ts ***! - \********************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -Object.defineProperty(exports, "__esModule", { value: true }); -class StyleLoadingMonitor { - constructor() { - this.unloadedStyles = []; - this.finishedLoading = false; - const onStyleLoadError = (event) => { - const source = event.target.dataset.source; - this.unloadedStyles.push(source); - }; - window.addEventListener('DOMContentLoaded', () => { - for (const link of document.getElementsByClassName('code-user-style')) { - if (link.dataset.source) { - link.onerror = onStyleLoadError; - } - } - }); - window.addEventListener('load', () => { - if (!this.unloadedStyles.length) { - return; - } - this.finishedLoading = true; - if (this.poster) { - this.poster.postMessage('previewStyleLoadError', { unloadedStyles: this.unloadedStyles }); - } - }); - } - setPoster(poster) { - this.poster = poster; - if (this.finishedLoading) { - poster.postMessage('previewStyleLoadError', { unloadedStyles: this.unloadedStyles }); - } - } -} -exports.StyleLoadingMonitor = StyleLoadingMonitor; - - -/***/ }), - -/***/ "./preview-src/pre.ts": -/*!****************************!*\ - !*** ./preview-src/pre.ts ***! - \****************************/ -/*! no static exports found */ -/***/ (function(module, exports, __webpack_require__) { - -"use strict"; - -/*--------------------------------------------------------------------------------------------- - * Copyright (c) Microsoft Corporation. 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See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst settings_1 = require(\"./settings\");\nconst strings_1 = require(\"./strings\");\n/**\n * Shows an alert when there is a content security policy violation.\n */\nclass CspAlerter {\n    constructor() {\n        this.didShow = false;\n        this.didHaveCspWarning = false;\n        document.addEventListener('securitypolicyviolation', () => {\n            this.onCspWarning();\n        });\n        window.addEventListener('message', (event) => {\n            if (event && event.data && event.data.name === 'vscode-did-block-svg') {\n                this.onCspWarning();\n            }\n        });\n    }\n    setPoster(poster) {\n        this.messaging = poster;\n        if (this.didHaveCspWarning) {\n            this.showCspWarning();\n        }\n    }\n    onCspWarning() {\n        this.didHaveCspWarning = true;\n        this.showCspWarning();\n    }\n    showCspWarning() {\n        const strings = strings_1.getStrings();\n        const settings = settings_1.getSettings();\n        if (this.didShow || settings.disableSecurityWarnings || !this.messaging) {\n            return;\n        }\n        this.didShow = true;\n        const notification = document.createElement('a');\n        notification.innerText = strings.cspAlertMessageText;\n        notification.setAttribute('id', 'code-csp-warning');\n        notification.setAttribute('title', strings.cspAlertMessageTitle);\n        notification.setAttribute('role', 'button');\n        notification.setAttribute('aria-label', strings.cspAlertMessageLabel);\n        notification.onclick = () => {\n            this.messaging.postMessage('showPreviewSecuritySelector', { source: settings.source });\n        };\n        document.body.appendChild(notification);\n    }\n}\nexports.CspAlerter = CspAlerter;\n","\"use strict\";\n/*---------------------------------------------------------------------------------------------\n *  Copyright (c) Microsoft Corporation. All rights reserved.\n *  Licensed under the MIT License. See License.txt in the project root for license information.\n *--------------------------------------------------------------------------------------------*/\nObject.defineProperty(exports, \"__esModule\", { value: true });\nconst csp_1 = require(\"./csp\");\nconst loading_1 = require(\"./loading\");\nwindow.cspAlerter = new csp_1.CspAlerter();\nwindow.styleLoadingMonitor = new loading_1.StyleLoadingMonitor();\n"],"sourceRoot":""} \ No newline at end of file diff --git a/extensions/markdown-language-features/package.json b/extensions/markdown-language-features/package.json index 4cd76c86007..482d0e6133d 100644 --- a/extensions/markdown-language-features/package.json +++ b/extensions/markdown-language-features/package.json @@ -314,7 +314,7 @@ "watch": "npm run build-preview && gulp watch-extension:markdown-language-features", "vscode:prepublish": "npm run build-ext && npm run build-preview", "build-ext": "node ../../node_modules/gulp/bin/gulp.js --gulpfile ../../build/gulpfile.extensions.js compile-extension:markdown-language-features ./tsconfig.json", - "build-preview": "webpack --mode development" + "build-preview": "webpack --mode production" }, "dependencies": { "highlight.js": "9.15.8", diff --git a/extensions/markdown-language-features/preview-src/index.ts b/extensions/markdown-language-features/preview-src/index.ts index aff7254ea79..1dbde3ed4e5 100644 --- a/extensions/markdown-language-features/preview-src/index.ts +++ b/extensions/markdown-language-features/preview-src/index.ts @@ -19,7 +19,7 @@ const settings = getSettings(); const vscode = acquireVsCodeApi(); // Set VS Code state -let state = getData<{ line: number, fragment: string }>('data-state'); +let state = getData<{ line: number; fragment: string; }>('data-state'); vscode.setState(state); const messaging = createPosterForVsCode(vscode); @@ -67,7 +67,7 @@ const onUpdateView = (() => { })(); let updateImageSizes = throttle(() => { - const imageInfo: { id: string, height: number, width: number }[] = []; + const imageInfo: { id: string, height: number, width: number; }[] = []; let images = document.getElementsByTagName('img'); if (images) { let i; @@ -129,6 +129,8 @@ document.addEventListener('dblclick', event => { } }); +const passThroughLinkSchemes = ['http:', 'https:', 'mailto:', 'vscode:', 'vscode-insiders']; + document.addEventListener('click', event => { if (!event) { return; @@ -138,20 +140,25 @@ document.addEventListener('click', event => { while (node) { if (node.tagName && node.tagName === 'A' && node.href) { if (node.getAttribute('href').startsWith('#')) { - break; + return; } - if (node.href.startsWith('file://') || node.href.startsWith('vscode-resource:') || node.href.startsWith(settings.webviewResourceRoot)) { - const [path, fragment] = node.href - .replace(/^file:\/\//i, '') - .replace(/^vscode-resource:\/\/[^\/]+\//i, '') - .replace(new RegExp(`^${escapeRegExp(settings.webviewResourceRoot)}`)) - .split('#'); - messaging.postMessage('clickLink', { path, fragment }); + + // Pass through known schemes + if (passThroughLinkSchemes.some(scheme => node.href.startsWith(scheme))) { + return; + } + + const hrefText = node.getAttribute('data-href') || node.getAttribute('href'); + + // If original link doesn't look like a url, delegate back to VS Code to resolve + if (!/^[a-z\-]+:/i.test(hrefText)) { + messaging.postMessage('openLink', { href: hrefText }); event.preventDefault(); event.stopPropagation(); - break; + return; } - break; + + return; } node = node.parentNode; } @@ -170,6 +177,3 @@ window.addEventListener('scroll', throttle(() => { } }, 50)); -function escapeRegExp(text: string) { - return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&'); -} diff --git a/extensions/markdown-language-features/src/features/preview.ts b/extensions/markdown-language-features/src/features/preview.ts index b1cbe39e5af..13f6d792a2d 100644 --- a/extensions/markdown-language-features/src/features/preview.ts +++ b/extensions/markdown-language-features/src/features/preview.ts @@ -25,7 +25,7 @@ interface WebviewMessage { interface CacheImageSizesMessage extends WebviewMessage { readonly type: 'cacheImageSizes'; - readonly body: { id: string, width: number, height: number }[]; + readonly body: { id: string, width: number, height: number; }[]; } interface RevealLineMessage extends WebviewMessage { @@ -43,10 +43,9 @@ interface DidClickMessage extends WebviewMessage { } interface ClickLinkMessage extends WebviewMessage { - readonly type: 'clickLink'; + readonly type: 'openLink'; readonly body: { - readonly path: string; - readonly fragment?: string; + readonly href: string; }; } @@ -88,7 +87,7 @@ export class MarkdownPreview extends Disposable { private forceUpdate = false; private isScrolling = false; private _disposed: boolean = false; - private imageInfo: { id: string, width: number, height: number }[] = []; + private imageInfo: { id: string, width: number, height: number; }[] = []; private scrollToFragment: string | undefined; public static async revive( @@ -202,8 +201,8 @@ export class MarkdownPreview extends Disposable { this.onDidClickPreview(e.body.line); break; - case 'clickLink': - this.onDidClickPreviewLink(e.body.path, e.body.fragment); + case 'openLink': + this.onDidClickPreviewLink(e.body.href); break; case 'showPreviewSecuritySelector': @@ -536,12 +535,19 @@ export class MarkdownPreview extends Disposable { this.editor.webview.html = html; } - private async onDidClickPreviewLink(path: string, fragment: string | undefined) { - this.scrollToFragment = undefined; + private async onDidClickPreviewLink(href: string) { + let [hrefPath, fragment] = href.split('#'); + + // We perviously already resolve absolute paths. + // Now make sure we handle relative file paths + if (hrefPath[0] !== '/') { + hrefPath = path.join(path.dirname(this.resource.path), hrefPath); + } + const config = vscode.workspace.getConfiguration('markdown', this.resource); const openLinks = config.get('preview.openMarkdownLinks', 'inPreview'); if (openLinks === 'inPreview') { - const markdownLink = await resolveLinkToMarkdownFile(path); + const markdownLink = await resolveLinkToMarkdownFile(hrefPath); if (markdownLink) { if (fragment) { this.scrollToFragment = fragment; @@ -551,10 +557,10 @@ export class MarkdownPreview extends Disposable { } } - vscode.commands.executeCommand('_markdown.openDocumentLink', { path, fragment, fromResource: this.resource }); + vscode.commands.executeCommand('_markdown.openDocumentLink', { path: hrefPath, fragment, fromResource: this.resource }); } - private async onCacheImageSizes(imageInfo: { id: string, width: number, height: number }[]) { + private async onCacheImageSizes(imageInfo: { id: string, width: number, height: number; }[]) { this.imageInfo = imageInfo; } } diff --git a/extensions/markdown-language-features/src/markdownEngine.ts b/extensions/markdown-language-features/src/markdownEngine.ts index bcd7dc43ff4..a4c9ae31bec 100644 --- a/extensions/markdown-language-features/src/markdownEngine.ts +++ b/extensions/markdown-language-features/src/markdownEngine.ts @@ -4,13 +4,13 @@ *--------------------------------------------------------------------------------------------*/ import * as crypto from 'crypto'; -import { MarkdownIt, Token } from 'markdown-it'; import * as path from 'path'; +import { MarkdownIt, Token } from 'markdown-it'; import * as vscode from 'vscode'; import { MarkdownContributionProvider as MarkdownContributionProvider } from './markdownExtensions'; import { Slugifier } from './slugify'; import { SkinnyTextDocument } from './tableOfContentsProvider'; -import { getUriForLinkWithKnownExternalScheme } from './util/links'; +import { Schemes, isOfScheme } from './util/links'; const UNICODE_NEWLINE_REGEX = /\u2028|\u2029/g; @@ -105,10 +105,10 @@ export class MarkdownEngine { this.addImageStabilizer(md); this.addFencedRenderer(md); - this.addLinkNormalizer(md); this.addLinkValidator(md); this.addNamedHeaders(md); + this.addLinkRenderer(md); return md; }); } @@ -143,6 +143,7 @@ export class MarkdownEngine { public async render(input: SkinnyTextDocument | string): Promise { const config = this.getConfig(typeof input === 'string' ? undefined : input.uri); const engine = await this.getEngine(config); + const tokens = typeof input === 'string' ? this.tokenizeString(input, engine) : this.tokenizeDocument(input, config, engine); @@ -226,36 +227,28 @@ export class MarkdownEngine { const normalizeLink = md.normalizeLink; md.normalizeLink = (link: string) => { try { - const externalSchemeUri = getUriForLinkWithKnownExternalScheme(link); - if (externalSchemeUri) { - // set true to skip encoding - return normalizeLink(externalSchemeUri.toString(true)); - } + // If original link doesn't look like a url with a scheme, assume it must be a link to a file in workspace + if (!/^[a-z\-]+:/i.test(link)) { + // Use a fake scheme for parsing + let uri = vscode.Uri.parse('markdown-link:' + link); - // Assume it must be an relative or absolute file path - // Use a fake scheme to avoid parse warnings - let uri = vscode.Uri.parse(`vscode-resource:${link}`); - - if (uri.path) { - // Assume it must be a file - const fragment = uri.fragment; + // Relative paths should be resolved correctly inside the preview but we need to + // handle absolute paths specially (for images) to resolve them relative to the workspace root if (uri.path[0] === '/') { const root = vscode.workspace.getWorkspaceFolder(this.currentDocument!); if (root) { - uri = vscode.Uri.file(path.join(root.uri.fsPath, uri.path)); + uri = uri.with({ + path: path.join(root.uri.fsPath, uri.path), + }); } - } else { - uri = vscode.Uri.file(path.join(path.dirname(this.currentDocument!.path), uri.path)); } - if (fragment) { + if (uri.fragment) { uri = uri.with({ - fragment: this.slugifier.fromHeading(fragment).value + fragment: this.slugifier.fromHeading(uri.fragment).value }); } - return normalizeLink(uri.with({ scheme: 'vscode-resource' }).toString(true)); - } else if (!uri.path && uri.fragment) { - return `#${this.slugifier.fromHeading(uri.fragment).value}`; + return normalizeLink(uri.toString(true).replace(/^markdown-link:/, '')); } } catch (e) { // noop @@ -268,7 +261,7 @@ export class MarkdownEngine { const validateLink = md.validateLink; md.validateLink = (link: string) => { // support file:// links - return validateLink(link) || link.startsWith('file:') || /^data:image\/.*?;/.test(link); + return validateLink(link) || isOfScheme(Schemes.file, link) || /^data:image\/.*?;/.test(link); }; } @@ -296,6 +289,22 @@ export class MarkdownEngine { } }; } + + private addLinkRenderer(md: any): void { + const old_render = md.renderer.rules.link_open || ((tokens: any, idx: number, options: any, _env: any, self: any) => { + return self.renderToken(tokens, idx, options); + }); + + md.renderer.rules.link_open = (tokens: any, idx: number, options: any, env: any, self: any) => { + const token = tokens[idx]; + const hrefIndex = token.attrIndex('href'); + if (hrefIndex >= 0) { + const href = token.attrs[hrefIndex][1]; + token.attrPush(['data-href', href]); + } + return old_render(tokens, idx, options, env, self); + }; + } } async function getMarkdownOptions(md: () => MarkdownIt) { diff --git a/extensions/markdown-language-features/src/util/links.ts b/extensions/markdown-language-features/src/util/links.ts index c1c2b1bdfb7..19c8627d49f 100644 --- a/extensions/markdown-language-features/src/util/links.ts +++ b/extensions/markdown-language-features/src/util/links.ts @@ -5,14 +5,30 @@ import * as vscode from 'vscode'; -const knownSchemes = ['http:', 'https:', 'file:', 'mailto:', 'data:', `${vscode.env.uriScheme}:`, 'vscode:', 'vscode-insiders:', 'vscode-resource:']; +export const Schemes = { + http: 'http:', + https: 'https:', + file: 'file:', + mailto: 'mailto:', + data: 'data:', + vscode: 'vscode:', + 'vscode-insiders': 'vscode-insiders:', + 'vscode-resource': 'vscode-resource', +} as const; -export function getUriForLinkWithKnownExternalScheme( - link: string, -): vscode.Uri | undefined { - if (knownSchemes.some(knownScheme => link.toLowerCase().startsWith(knownScheme))) { +const knownSchemes = [ + ...Object.values(Schemes), + `${vscode.env.uriScheme}:` +] as const; + +export function getUriForLinkWithKnownExternalScheme(link: string): vscode.Uri | undefined { + if (knownSchemes.some(knownScheme => isOfScheme(knownScheme, link))) { return vscode.Uri.parse(link); } return undefined; } + +export function isOfScheme(scheme: string, link: string): boolean { + return link.toLowerCase().startsWith(scheme); +}