56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
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/**
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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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* Utility class to provide the component owner hierarchy to native code for
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* debugging purposes.
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*
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* @providesModule RCTDebugComponentOwnership
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* @flow
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*/
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'use strict';
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var DebugComponentOwnershipModule = require('NativeModules').DebugComponentOwnershipModule;
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var InspectorUtils = require('InspectorUtils');
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var ReactNativeTagHandles = require('ReactNativeTagHandles');
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function componentToString(component) {
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return component.getName ? component.getName() : 'Unknown';
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}
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function getRootTagForTag(tag: number): ?number {
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var rootNodeID = ReactNativeTagHandles.tagToRootNodeID[tag];
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if (!rootNodeID) {
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return null;
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}
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var rootID = ReactNativeTagHandles.getNativeTopRootIDFromNodeID(rootNodeID);
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if (!rootID) {
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return null;
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}
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return ReactNativeTagHandles.rootNodeIDToTag[rootID];
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}
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module.exports = {
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/**
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* Asynchronously returns the owner hierarchy as an array of strings. Request id is
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* passed along to the native module so that the native module can identify the
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* particular call instance.
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*
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* Example returned owner hierarchy: ['RootView', 'Dialog', 'TitleView', 'Text']
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*/
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getOwnerHierarchy: function(requestID: number, tag: number) {
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var rootTag = getRootTagForTag(tag);
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var instance = InspectorUtils.findInstanceByNativeTag(rootTag, tag);
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var ownerHierarchy = instance ?
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InspectorUtils.getOwnerHierarchy(instance).map(componentToString) :
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null;
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DebugComponentOwnershipModule.receiveOwnershipHierarchy(requestID, tag, ownerHierarchy);
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},
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};
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