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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | 1x | /**
* Copyright (c) Nicolas Gallagher.
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import invariant from 'fbjs/lib/invariant';
import requestIdleCallback, { cancelIdleCallback } from '../../modules/requestIdleCallback';
const InteractionManager = {
Events: {
interactionStart: 'interactionStart',
interactionComplete: 'interactionComplete'
},
/**
* Schedule a function to run after all interactions have completed.
*/
runAfterInteractions(task: ?Function): { then: Function, done: Function, cancel: Function } {
let handle;
const promise = new Promise((resolve) => {
handle = requestIdleCallback(() => {
if (task) {
resolve(task());
} else {
resolve();
}
});
});
return {
then: promise.then.bind(promise),
done: promise.then.bind(promise),
cancel: () => {
cancelIdleCallback(handle);
}
};
},
/**
* Notify manager that an interaction has started.
*/
createInteractionHandle(): number {
return 1;
},
/**
* Notify manager that an interaction has completed.
*/
clearInteractionHandle(handle: number) {
invariant(!!handle, 'Must provide a handle to clear.');
},
addListener: () => {}
};
export default InteractionManager;
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