Reorganized utils files

app/javascript/gabsocial/utils/compare_id.js

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+'use strict';
+
+export default function compareId(id1, id2) {
+  if (id1 === id2) {
+    return 0;
+  }
+  if (id1.length === id2.length) {
+    return id1 > id2 ? 1 : -1;
+  } else {
+    return id1.length > id2.length ? 1 : -1;
+  }
+}

app/javascript/gabsocial/utils/fullscreen.js

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+// APIs for normalizing fullscreen operations. Note that Edge uses
+// the WebKit-prefixed APIs currently (as of Edge 16).
+
+export const isFullscreen = () => document.fullscreenElement ||
+  document.webkitFullscreenElement ||
+  document.mozFullScreenElement;
+
+export const exitFullscreen = () => {
+  if (document.exitFullscreen) {
+    document.exitFullscreen();
+  } else if (document.webkitExitFullscreen) {
+    document.webkitExitFullscreen();
+  } else if (document.mozCancelFullScreen) {
+    document.mozCancelFullScreen();
+  }
+};
+
+export const requestFullscreen = el => {
+  if (el.requestFullscreen) {
+    el.requestFullscreen();
+  } else if (el.webkitRequestFullscreen) {
+    el.webkitRequestFullscreen();
+  } else if (el.mozRequestFullScreen) {
+    el.mozRequestFullScreen();
+  }
+};
+
+export const attachFullscreenListener = (listener) => {
+  if ('onfullscreenchange' in document) {
+    document.addEventListener('fullscreenchange', listener);
+  } else if ('onwebkitfullscreenchange' in document) {
+    document.addEventListener('webkitfullscreenchange', listener);
+  } else if ('onmozfullscreenchange' in document) {
+    document.addEventListener('mozfullscreenchange', listener);
+  }
+};
+
+export const detachFullscreenListener = (listener) => {
+  if ('onfullscreenchange' in document) {
+    document.removeEventListener('fullscreenchange', listener);
+  } else if ('onwebkitfullscreenchange' in document) {
+    document.removeEventListener('webkitfullscreenchange', listener);
+  } else if ('onmozfullscreenchange' in document) {
+    document.removeEventListener('mozfullscreenchange', listener);
+  }
+};

app/javascript/gabsocial/utils/get_rect_from_entry.js

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+
+// Get the bounding client rect from an IntersectionObserver entry.
+// This is to work around a bug in Chrome: https://crbug.com/737228
+
+let hasBoundingRectBug;
+
+function getRectFromEntry(entry) {
+  if (typeof hasBoundingRectBug !== 'boolean') {
+    const boundingRect = entry.target.getBoundingClientRect();
+    const observerRect = entry.boundingClientRect;
+    hasBoundingRectBug = boundingRect.height !== observerRect.height ||
+      boundingRect.top !== observerRect.top ||
+      boundingRect.width !== observerRect.width ||
+      boundingRect.bottom !== observerRect.bottom ||
+      boundingRect.left !== observerRect.left ||
+      boundingRect.right !== observerRect.right;
+  }
+  return hasBoundingRectBug ? entry.target.getBoundingClientRect() : entry.boundingClientRect;
+}
+
+export default getRectFromEntry;

app/javascript/gabsocial/utils/is_mobile.js

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+'use strict';
+
+import detectPassiveEvents from 'detect-passive-events';
+
+const LAYOUT_BREAKPOINT = 630;
+
+export function isMobile(width) {
+  return width <= LAYOUT_BREAKPOINT;
+};
+
+const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+
+let userTouching = false;
+let listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
+
+function touchListener() {
+  userTouching = true;
+  window.removeEventListener('touchstart', touchListener, listenerOptions);
+}
+
+window.addEventListener('touchstart', touchListener, listenerOptions);
+
+export function isUserTouching() {
+  return userTouching;
+}
+
+export function isIOS() {
+  return iOS;
+};

app/javascript/gabsocial/utils/rtl.js

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+'use strict';
+
+// U+0590  to U+05FF  - Hebrew
+// U+0600  to U+06FF  - Arabic
+// U+0700  to U+074F  - Syriac
+// U+0750  to U+077F  - Arabic Supplement
+// U+0780  to U+07BF  - Thaana
+// U+07C0  to U+07FF  - N'Ko
+// U+0800  to U+083F  - Samaritan
+// U+08A0  to U+08FF  - Arabic Extended-A
+// U+FB1D  to U+FB4F  - Hebrew presentation forms
+// U+FB50  to U+FDFF  - Arabic presentation forms A
+// U+FE70  to U+FEFF  - Arabic presentation forms B
+
+const rtlChars = /[\u0590-\u083F]|[\u08A0-\u08FF]|[\uFB1D-\uFDFF]|[\uFE70-\uFEFF]/mg;
+
+export function isRtl(text) {
+  if (text.length === 0) {
+    return false;
+  }
+
+  text = text.replace(/(?:^|[^\/\w])@([a-z0-9_]+(@[a-z0-9\.\-]+)?)/ig, '');
+  text = text.replace(/(?:^|[^\/\w])#([\S]+)/ig, '');
+  text = text.replace(/\s+/g, '');
+
+  const matches = text.match(rtlChars);
+
+  if (!matches) {
+    return false;
+  }
+
+  return matches.length / text.length > 0.3;
+};

app/javascript/gabsocial/utils/schedule_idle_task.js

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+// Wrapper to call requestIdleCallback() to schedule low-priority work.
+// See https://developer.mozilla.org/en-US/docs/Web/API/Background_Tasks_API
+// for a good breakdown of the concepts behind this.
+
+import Queue from 'tiny-queue';
+
+const taskQueue = new Queue();
+let runningRequestIdleCallback = false;
+
+function runTasks(deadline) {
+  while (taskQueue.length && deadline.timeRemaining() > 0) {
+    taskQueue.shift()();
+  }
+  if (taskQueue.length) {
+    requestIdleCallback(runTasks);
+  } else {
+    runningRequestIdleCallback = false;
+  }
+}
+
+function scheduleIdleTask(task) {
+  taskQueue.push(task);
+  if (!runningRequestIdleCallback) {
+    runningRequestIdleCallback = true;
+    requestIdleCallback(runTasks);
+  }
+}
+
+export default scheduleIdleTask;

app/javascript/gabsocial/utils/uuid.js

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+'use strict';
+
+export default function uuid(a) {
+  return a ? (a^Math.random() * 16 >> a / 4).toString(16) : ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, uuid);
+};