diff options
Diffstat (limited to 'app/assets/javascripts/behaviors/gl_emoji.js')
| -rw-r--r-- | app/assets/javascripts/behaviors/gl_emoji.js | 206 |
1 files changed, 47 insertions, 159 deletions
diff --git a/app/assets/javascripts/behaviors/gl_emoji.js b/app/assets/javascripts/behaviors/gl_emoji.js index d1d98c3919f..59741cc9b1a 100644 --- a/app/assets/javascripts/behaviors/gl_emoji.js +++ b/app/assets/javascripts/behaviors/gl_emoji.js @@ -1,11 +1,13 @@ -const installCustomElements = require('document-register-element'); -const emojiMap = require('emoji-map'); -const emojiAliases = require('emoji-aliases'); -const generatedUnicodeSupportMap = require('./gl_emoji/unicode_support_map'); -const spreadString = require('./gl_emoji/spread_string'); +import installCustomElements from 'document-register-element'; +import emojiMap from 'emojis/digests.json'; +import emojiAliases from 'emojis/aliases.json'; +import { getUnicodeSupportMap } from './gl_emoji/unicode_support_map'; +import { isEmojiUnicodeSupported } from './gl_emoji/is_emoji_unicode_supported'; installCustomElements(window); +const generatedUnicodeSupportMap = getUnicodeSupportMap(); + function emojiImageTag(name, src) { return `<img class="emoji" title=":${name}:" alt=":${name}:" src="${src}" width="20" height="20" align="absmiddle" />`; } @@ -55,163 +57,49 @@ function glEmojiTag(inputName, options) { `; } -// On Windows, flags render as two-letter country codes, see http://emojipedia.org/flags/ -const flagACodePoint = 127462; // parseInt('1F1E6', 16) -const flagZCodePoint = 127487; // parseInt('1F1FF', 16) -function isFlagEmoji(emojiUnicode) { - const cp = emojiUnicode.codePointAt(0); - // Length 4 because flags are made of 2 characters which are surrogate pairs - return emojiUnicode.length === 4 && cp >= flagACodePoint && cp <= flagZCodePoint; -} - -// Chrome <57 renders keycaps oddly -// See https://bugs.chromium.org/p/chromium/issues/detail?id=632294 -// Same issue on Windows also fixed in Chrome 57, http://i.imgur.com/rQF7woO.png -function isKeycapEmoji(emojiUnicode) { - return emojiUnicode.length === 3 && emojiUnicode[2] === '\u20E3'; -} - -// Check for a skin tone variation emoji which aren't always supported -const tone1 = 127995;// parseInt('1F3FB', 16) -const tone5 = 127999;// parseInt('1F3FF', 16) -function isSkinToneComboEmoji(emojiUnicode) { - return emojiUnicode.length > 2 && spreadString(emojiUnicode).some((char) => { - const cp = char.codePointAt(0); - return cp >= tone1 && cp <= tone5; - }); -} - -// macOS supports most skin tone emoji's but -// doesn't support the skin tone versions of horse racing -const horseRacingCodePoint = 127943;// parseInt('1F3C7', 16) -function isHorceRacingSkinToneComboEmoji(emojiUnicode) { - return spreadString(emojiUnicode)[0].codePointAt(0) === horseRacingCodePoint && - isSkinToneComboEmoji(emojiUnicode); -} - -// Check for `family_*`, `kiss_*`, `couple_*` -// For ex. Windows 8.1 Firefox 51.0.1, doesn't support these -const zwj = 8205; // parseInt('200D', 16) -const personStartCodePoint = 128102; // parseInt('1F466', 16) -const personEndCodePoint = 128105; // parseInt('1F469', 16) -function isPersonZwjEmoji(emojiUnicode) { - let hasPersonEmoji = false; - let hasZwj = false; - spreadString(emojiUnicode).forEach((character) => { - const cp = character.codePointAt(0); - if (cp === zwj) { - hasZwj = true; - } else if (cp >= personStartCodePoint && cp <= personEndCodePoint) { - hasPersonEmoji = true; +function installGlEmojiElement() { + const GlEmojiElementProto = Object.create(HTMLElement.prototype); + GlEmojiElementProto.createdCallback = function createdCallback() { + const emojiUnicode = this.textContent.trim(); + const { + name, + unicodeVersion, + fallbackSrc, + fallbackSpriteClass, + } = this.dataset; + + const isEmojiUnicode = this.childNodes && Array.prototype.every.call( + this.childNodes, + childNode => childNode.nodeType === 3, + ); + const hasImageFallback = fallbackSrc && fallbackSrc.length > 0; + const hasCssSpriteFalback = fallbackSpriteClass && fallbackSpriteClass.length > 0; + + if ( + isEmojiUnicode && + !isEmojiUnicodeSupported(generatedUnicodeSupportMap, emojiUnicode, unicodeVersion) + ) { + // CSS sprite fallback takes precedence over image fallback + if (hasCssSpriteFalback) { + // IE 11 doesn't like adding multiple at once :( + this.classList.add('emoji-icon'); + this.classList.add(fallbackSpriteClass); + } else if (hasImageFallback) { + this.innerHTML = emojiImageTag(name, fallbackSrc); + } else { + const src = assembleFallbackImageSrc(name); + this.innerHTML = emojiImageTag(name, src); + } } - }); - - return hasPersonEmoji && hasZwj; -} - -// Helper so we don't have to run `isFlagEmoji` twice -// in `isEmojiUnicodeSupported` logic -function checkFlagEmojiSupport(unicodeSupportMap, emojiUnicode) { - const isFlagResult = isFlagEmoji(emojiUnicode); - return ( - (unicodeSupportMap.flag && isFlagResult) || - !isFlagResult - ); -} - -// Helper so we don't have to run `isSkinToneComboEmoji` twice -// in `isEmojiUnicodeSupported` logic -function checkSkinToneModifierSupport(unicodeSupportMap, emojiUnicode) { - const isSkinToneResult = isSkinToneComboEmoji(emojiUnicode); - return ( - (unicodeSupportMap.skinToneModifier && isSkinToneResult) || - !isSkinToneResult - ); -} - -// Helper func so we don't have to run `isHorceRacingSkinToneComboEmoji` twice -// in `isEmojiUnicodeSupported` logic -function checkHorseRacingSkinToneComboEmojiSupport(unicodeSupportMap, emojiUnicode) { - const isHorseRacingSkinToneResult = isHorceRacingSkinToneComboEmoji(emojiUnicode); - return ( - (unicodeSupportMap.horseRacing && isHorseRacingSkinToneResult) || - !isHorseRacingSkinToneResult - ); -} - -// Helper so we don't have to run `isPersonZwjEmoji` twice -// in `isEmojiUnicodeSupported` logic -function checkPersonEmojiSupport(unicodeSupportMap, emojiUnicode) { - const isPersonZwjResult = isPersonZwjEmoji(emojiUnicode); - return ( - (unicodeSupportMap.personZwj && isPersonZwjResult) || - !isPersonZwjResult - ); -} - -// Takes in a support map and determines whether -// the given unicode emoji is supported on the platform. -// -// Combines all the edge case tests into a one-stop shop method -function isEmojiUnicodeSupported(unicodeSupportMap = {}, emojiUnicode, unicodeVersion) { - const isOlderThanChrome57 = unicodeSupportMap.meta && unicodeSupportMap.meta.isChrome && - unicodeSupportMap.meta.chromeVersion < 57; + }; - // For comments about each scenario, see the comments above each individual respective function - return unicodeSupportMap[unicodeVersion] && - !(isOlderThanChrome57 && isKeycapEmoji(emojiUnicode)) && - checkFlagEmojiSupport(unicodeSupportMap, emojiUnicode) && - checkSkinToneModifierSupport(unicodeSupportMap, emojiUnicode) && - checkHorseRacingSkinToneComboEmojiSupport(unicodeSupportMap, emojiUnicode) && - checkPersonEmojiSupport(unicodeSupportMap, emojiUnicode); + document.registerElement('gl-emoji', { + prototype: GlEmojiElementProto, + }); } -const GlEmojiElementProto = Object.create(HTMLElement.prototype); -GlEmojiElementProto.createdCallback = function createdCallback() { - const emojiUnicode = this.textContent.trim(); - const { - name, - unicodeVersion, - fallbackSrc, - fallbackSpriteClass, - } = this.dataset; - - const isEmojiUnicode = this.childNodes && Array.prototype.every.call( - this.childNodes, - childNode => childNode.nodeType === 3, - ); - const hasImageFallback = fallbackSrc && fallbackSrc.length > 0; - const hasCssSpriteFalback = fallbackSpriteClass && fallbackSpriteClass.length > 0; - - if ( - isEmojiUnicode && - !isEmojiUnicodeSupported(generatedUnicodeSupportMap, emojiUnicode, unicodeVersion) - ) { - // CSS sprite fallback takes precedence over image fallback - if (hasCssSpriteFalback) { - // IE 11 doesn't like adding multiple at once :( - this.classList.add('emoji-icon'); - this.classList.add(fallbackSpriteClass); - } else if (hasImageFallback) { - this.innerHTML = emojiImageTag(name, fallbackSrc); - } else { - const src = assembleFallbackImageSrc(name); - this.innerHTML = emojiImageTag(name, src); - } - } -}; - -document.registerElement('gl-emoji', { - prototype: GlEmojiElementProto, -}); - -module.exports = { - emojiImageTag, +export { + installGlEmojiElement, glEmojiTag, - isEmojiUnicodeSupported, - isFlagEmoji, - isKeycapEmoji, - isSkinToneComboEmoji, - isHorceRacingSkinToneComboEmoji, - isPersonZwjEmoji, + emojiImageTag, }; |