@atlaskit/tooltip/dist/esm/internal/drag-manager.js

A tooltip briefly describes an interactive element on mouse hover or keyboard focus.

/* eslint-disable @atlaskit/design-system/no-direct-use-of-web-platform-drag-and-drop */
/**
 * We are listening directly to drag events instead of using a monitor from
 * `@atlaskit/pragmatic-drag-and-drop` to avoid the bundle size cost, as it
 * would affect almost every view in every app.
 *
 * We can reconsider this choice in the future.
 */
import { bindAll } from 'bind-event-listener';
var registrations = new Set();
var cleanupEndEventListeners = null;
function onDragStart() {
  if (cleanupEndEventListeners) {
    // If the cleanup function exists then we've already run this
    return;
  }
  cleanupEndEventListeners = bindAll(window, [{
    type: 'dragend',
    listener: onDragEnd
  }, {
    type: 'pointerdown',
    listener: onDragEnd
  }, {
    type: 'pointermove',
    listener: function () {
      var callCount = 0;
      return function listener() {
        // Using 20 as it is far bigger than the most observed (3)
        if (callCount < 20) {
          callCount++;
          return;
        }
        onDragEnd();
      };
    }()
  }]);
  var clone = Array.from(registrations);
  clone.forEach(function (subscriber) {
    subscriber.onDragStart();
  });
}
function onDragEnd() {
  var _cleanupEndEventListe;
  (_cleanupEndEventListe = cleanupEndEventListeners) === null || _cleanupEndEventListe === void 0 || _cleanupEndEventListe();
  cleanupEndEventListeners = null;
  var clone = Array.from(registrations);
  clone.forEach(function (subscriber) {
    subscriber.onDragEnd();
  });
}
function bindStartEvents() {
  return bindAll(window, [{
    type: 'dragstart',
    listener: onDragStart
  }, {
    type: 'dragenter',
    listener: onDragStart
  }]);
}
var cleanupStartEventListeners = null;
export function register(registration) {
  // if first registration, bind event listeners
  if (!cleanupStartEventListeners) {
    // note: currently never unbinding these event listeners
    cleanupStartEventListeners = bindStartEvents();
  }
  registrations.add(registration);

  /**
   * The reasoning for this behavior is so that if a tooltip mounts during
   * a drag it can still be suppressed.
   *
   * We use a separate callback instead of onDragStart to avoid infinite loops.
   */
  registration.onRegister({
    isDragging: cleanupEndEventListeners !== null
  });
  return function unregister() {
    registrations.delete(registration);
    if (registrations.size === 0) {
      var _cleanupStartEventLis;
      (_cleanupStartEventLis = cleanupStartEventListeners) === null || _cleanupStartEventLis === void 0 || _cleanupStartEventLis();
      cleanupStartEventListeners = null;
    }
  };
}