react-native-mock-tmp-build/src/api/InteractionManager.js

A fully mocked and test-friendly version of react native

import keyMirror from 'keymirror';
import invariant from 'invariant';

const { EventEmitter } = require('events');

const _emitter = new EventEmitter();

let _inc = 0;
let _deadline = -1; // eslint-disable-line no-unused-vars

const InteractionManager = {
  Events: keyMirror({
    interactionStart: true,
    interactionComplete: true,
  }),

  /**
   * Schedule a function to run after all interactions have completed.
   */
  runAfterInteractions(task) {
    return new Promise(resolve => {
      // TODO(lmr):
      // _scheduleUpdate();
      // if (task) {
      //  _taskQueue.enqueue(task);
      // }
      // const name = task && task.name || '?';
      // _taskQueue.enqueue({ run: resolve, name: 'resolve ' + name });
    });
  },

  /**
   * Notify manager that an interaction has started.
   */
  createInteractionHandle() {
    // TODO(lmr):
    // _scheduleUpdate();
    const handle = ++_inc;
    // _addInteractionSet.add(handle);
    return handle;
  },

  /**
   * Notify manager that an interaction has completed.
   */
  clearInteractionHandle(handle) {
    invariant(
      !!handle,
      'Must provide a handle to clear.'
    );
    // TODO(lmr):
    // _scheduleUpdate();
    // _addInteractionSet.delete(handle);
    // _deleteInteractionSet.add(handle);
  },

  addListener: _emitter.addListener.bind(_emitter),

  /**
   * A positive number will use setTimeout to schedule any tasks after the
   * eventLoopRunningTime hits the deadline value, otherwise all tasks will be
   * executed in one setImmediate batch (default).
   */
  setDeadline(deadline) {
    _deadline = deadline;
  },
};

module.exports = InteractionManager;