46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule UIManager
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* @flow
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*/
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'use strict';
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var UIManager = require('NativeModules').UIManager;
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if (!UIManager.setChildren) {
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/**
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* Index cache (used by setChildren())
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*/
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UIManager._cachedIndexArray = function(size) {
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var cachedResult = this._cachedIndexArray._cache[size];
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if (!cachedResult) {
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var arr = [];
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for (var i = 0; i < size; i++) {
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arr[i] = i;
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}
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this._cachedIndexArray._cache[size] = arr;
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return arr;
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} else {
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return cachedResult;
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}
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};
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UIManager._cachedIndexArray._cache = {};
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/**
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* Fallback setChildren() implementation for Android
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*/
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UIManager.setChildren = function(containerTag, createdTags) {
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var indexes = this._cachedIndexArray(createdTags.length);
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UIManager.manageChildren(containerTag, null, null, createdTags, indexes, null);
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}
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}
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module.exports = UIManager;
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