66 lines
2.0 KiB
JavaScript
66 lines
2.0 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 InspectorUtils
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*/
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'use strict';
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var ReactInstanceHandles = require('ReactInstanceHandles');
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var ReactInstanceMap = require('ReactInstanceMap');
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var ReactNativeMount = require('ReactNativeMount');
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var ReactNativeTagHandles = require('ReactNativeTagHandles');
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function traverseOwnerTreeUp(hierarchy, instance) {
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if (instance) {
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hierarchy.unshift(instance);
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traverseOwnerTreeUp(hierarchy, instance._currentElement._owner);
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}
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}
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function findInstance(component, targetID) {
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if (targetID === findRootNodeID(component)) {
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return component;
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}
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if (component._renderedComponent) {
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return findInstance(component._renderedComponent, targetID);
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} else {
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for (var key in component._renderedChildren) {
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var child = component._renderedChildren[key];
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if (ReactInstanceHandles.isAncestorIDOf(findRootNodeID(child), targetID)) {
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var instance = findInstance(child, targetID);
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if (instance) {
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return instance;
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}
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}
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}
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}
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}
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function findRootNodeID(component) {
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var internalInstance = ReactInstanceMap.get(component);
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return internalInstance ? internalInstance._rootNodeID : component._rootNodeID;
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}
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function findInstanceByNativeTag(rootTag, nativeTag) {
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var containerID = ReactNativeTagHandles.tagToRootNodeID[rootTag];
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var rootInstance = ReactNativeMount._instancesByContainerID[containerID];
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var targetID = ReactNativeTagHandles.tagToRootNodeID[nativeTag];
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if (!targetID) {
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return undefined;
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}
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return findInstance(rootInstance, targetID);
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}
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function getOwnerHierarchy(instance) {
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var hierarchy = [];
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traverseOwnerTreeUp(hierarchy, instance);
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return hierarchy;
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}
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module.exports = {findInstanceByNativeTag, getOwnerHierarchy};
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