1 files changed, 0 insertions, 161 deletions
diff --git a/app/assets/javascripts/behaviors/gl_emoji/unicode_support_map.js b/app/assets/javascripts/behaviors/gl_emoji/unicode_support_map.js
deleted file mode 100644
index aa522e20c36..00000000000
--- a/app/assets/javascripts/behaviors/gl_emoji/unicode_support_map.js
+++ /dev/null
@@ -1,161 +0,0 @@
-const unicodeSupportTestMap = {
-  // man, student (emojione does not have any of these yet), http://emojipedia.org/emoji-zwj-sequences/
-  // occupationZwj: '\u{1F468}\u{200D}\u{1F393}',
-  // woman, biking (emojione does not have any of these yet), http://emojipedia.org/emoji-zwj-sequences/
-  // sexZwj: '\u{1F6B4}\u{200D}\u{2640}',
-  // family_mwgb
-  // Windows 8.1, Firefox 51.0.1 does not support `family_`, `kiss_`, `couple_`
-  personZwj: '\u{1F468}\u{200D}\u{1F469}\u{200D}\u{1F467}\u{200D}\u{1F466}',
-  // horse_racing_tone5
-  // Special case that is not supported on macOS 10.12 even though `skinToneModifier` succeeds
-  horseRacing: '\u{1F3C7}\u{1F3FF}',
-  // US flag, http://emojipedia.org/flags/
-  flag: '\u{1F1FA}\u{1F1F8}',
-  // http://emojipedia.org/modifiers/
-  skinToneModifier: [
-    // spy_tone5
-    '\u{1F575}\u{1F3FF}',
-    // person_with_ball_tone5
-    '\u{26F9}\u{1F3FF}',
-    // angel_tone5
-    '\u{1F47C}\u{1F3FF}',
-  ],
-  // rofl, http://emojipedia.org/unicode-9.0/
-  '9.0': '\u{1F923}',
-  // metal, http://emojipedia.org/unicode-8.0/
-  '8.0': '\u{1F918}',
-  // spy, http://emojipedia.org/unicode-7.0/
-  '7.0': '\u{1F575}',
-  // expressionless, http://emojipedia.org/unicode-6.1/
-  6.1: '\u{1F611}',
-  // japanese_goblin, http://emojipedia.org/unicode-6.0/
-  '6.0': '\u{1F47A}',
-  // sailboat, http://emojipedia.org/unicode-5.2/
-  5.2: '\u{26F5}',
-  // mahjong, http://emojipedia.org/unicode-5.1/
-  5.1: '\u{1F004}',
-  // gear, http://emojipedia.org/unicode-4.1/
-  4.1: '\u{2699}',
-  // zap, http://emojipedia.org/unicode-4.0/
-  '4.0': '\u{26A1}',
-  // recycle, http://emojipedia.org/unicode-3.2/
-  3.2: '\u{267B}',
-  // information_source, http://emojipedia.org/unicode-3.0/
-  '3.0': '\u{2139}',
-  // heart, http://emojipedia.org/unicode-1.1/
-  1.1: '\u{2764}',
-};
-
-function checkPixelInImageDataArray(pixelOffset, imageDataArray) {
-  // `4 *` because RGBA
-  const indexOffset = 4 * pixelOffset;
-  const hasColor = imageDataArray[indexOffset + 0] ||
-    imageDataArray[indexOffset + 1] ||
-    imageDataArray[indexOffset + 2];
-  const isVisible = imageDataArray[indexOffset + 3];
-  // Check for some sort of color other than black
-  if (hasColor && isVisible) {
-    return true;
-  }
-  return false;
-}
-
-const chromeMatches = navigator.userAgent.match(/Chrom(?:e|ium)\/([0-9]+)\./);
-const isChrome = chromeMatches && chromeMatches.length > 0;
-const chromeVersion = chromeMatches && chromeMatches[1] && parseInt(chromeMatches[1], 10);
-
-// We use 16px because mobile Safari (iOS 9.3) doesn't properly scale emojis :/
-// See 32px, https://i.imgur.com/htY6Zym.png
-// See 16px, https://i.imgur.com/FPPsIF8.png
-const fontSize = 16;
-function generateUnicodeSupportMap(testMap) {
-  const testMapKeys = Object.keys(testMap);
-  const numTestEntries = testMapKeys
-    .reduce((list, testKey) => list.concat(testMap[testKey]), []).length;
-
-  const canvas = document.createElement('canvas');
-  (window.gl || window).testEmojiUnicodeSupportMapCanvas = canvas;
-  const ctx = canvas.getContext('2d');
-  canvas.width = (2 * fontSize);
-  canvas.height = (numTestEntries * fontSize);
-  ctx.fillStyle = '#000000';
-  ctx.textBaseline = 'middle';
-  ctx.font = `${fontSize}px "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"`;
-  // Write each emoji to the canvas vertically
-  let writeIndex = 0;
-  testMapKeys.forEach((testKey) => {
-    const testEntry = testMap[testKey];
-    [].concat(testEntry).forEach((emojiUnicode) => {
-      ctx.fillText(emojiUnicode, 0, (writeIndex * fontSize) + (fontSize / 2));
-      writeIndex += 1;
-    });
-  });
-
-  // Read from the canvas
-  const resultMap = {};
-  let readIndex = 0;
-  testMapKeys.forEach((testKey) => {
-    const testEntry = testMap[testKey];
-    // This needs to be a `reduce` instead of `every` because we need to
-    // keep the `readIndex` in sync from the writes by running all entries
-    const isTestSatisfied = [].concat(testEntry).reduce((isSatisfied) => {
-      // Sample along the vertical-middle for a couple of characters
-      const imageData = ctx.getImageData(
-          0,
-          (readIndex * fontSize) + (fontSize / 2),
-          2 * fontSize,
-          1,
-        ).data;
-
-      let isValidEmoji = false;
-      for (let currentPixel = 0; currentPixel < 64; currentPixel += 1) {
-        const isLookingAtFirstChar = currentPixel < fontSize;
-        const isLookingAtSecondChar = currentPixel >= (fontSize + (fontSize / 2));
-        // Check for the emoji somewhere along the row
-        if (isLookingAtFirstChar && checkPixelInImageDataArray(currentPixel, imageData)) {
-          isValidEmoji = true;
-
-        // Check to see that nothing is rendered next to the first character
-        // to ensure that the ZWJ sequence rendered as one piece
-        } else if (isLookingAtSecondChar && checkPixelInImageDataArray(currentPixel, imageData)) {
-          isValidEmoji = false;
-          break;
-        }
-      }
-
-      readIndex += 1;
-      return isSatisfied && isValidEmoji;
-    }, true);
-
-    resultMap[testKey] = isTestSatisfied;
-  });
-
-  resultMap.meta = {
-    isChrome,
-    chromeVersion,
-  };
-
-  return resultMap;
-}
-
-function getUnicodeSupportMap() {
-  let unicodeSupportMap;
-  const userAgentFromCache = window.localStorage.getItem('gl-emoji-user-agent');
-  try {
-    unicodeSupportMap = JSON.parse(window.localStorage.getItem('gl-emoji-unicode-support-map'));
-  } catch (err) {
-    // swallow
-  }
-  if (!unicodeSupportMap || userAgentFromCache !== navigator.userAgent) {
-    unicodeSupportMap = generateUnicodeSupportMap(unicodeSupportTestMap);
-    window.localStorage.setItem('gl-emoji-user-agent', navigator.userAgent);
-    window.localStorage.setItem('gl-emoji-unicode-support-map', JSON.stringify(unicodeSupportMap));
-  }
-
-  return unicodeSupportMap;
-}
-
-export {
-  getUnicodeSupportMap,
-  generateUnicodeSupportMap,
-};