ba9b985406
For clarity. I left "native event" as-is because there's a lot of it, it's not particularly ambiguous, and SimulateNative/nativeTouchData are public API in ReactTestUtils.
67 lines
1.7 KiB
JavaScript
67 lines
1.7 KiB
JavaScript
/**
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* Copyright 2013-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 ReactNativeComponentTree
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*/
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'use strict';
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var invariant = require('invariant');
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var instanceCache = {};
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/**
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* Drill down (through composites and empty components) until we get a host or
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* host text component.
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*
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* This is pretty polymorphic but unavoidable with the current structure we have
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* for `_renderedChildren`.
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*/
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function getRenderedHostOrTextFromComponent(component) {
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var rendered;
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while ((rendered = component._renderedComponent)) {
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component = rendered;
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}
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return component;
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}
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/**
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* Populate `_hostNode` on the rendered host/text component with the given
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* DOM node. The passed `inst` can be a composite.
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*/
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function precacheNode(inst, tag) {
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var nativeInst = getRenderedHostOrTextFromComponent(inst);
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instanceCache[tag] = nativeInst;
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}
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function uncacheNode(inst) {
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var tag = inst._rootNodeID;
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if (tag) {
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delete instanceCache[tag];
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}
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}
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function getInstanceFromTag(tag) {
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return instanceCache[tag] || null;
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}
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function getTagFromInstance(inst) {
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invariant(inst._rootNodeID, 'All native instances should have a tag.');
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return inst._rootNodeID;
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}
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var ReactNativeComponentTree = {
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getClosestInstanceFromNode: getInstanceFromTag,
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getInstanceFromNode: getInstanceFromTag,
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getNodeFromInstance: getTagFromInstance,
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precacheNode: precacheNode,
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uncacheNode: uncacheNode,
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};
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module.exports = ReactNativeComponentTree;
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