| 1 | /** @flow */ |
| 2 | |
| 3 | import Agent from 'react-devtools-shared/src/backend/agent'; |
| 4 | import Bridge from 'react-devtools-shared/src/bridge'; |
| 5 | import {initBackend} from 'react-devtools-shared/src/backend'; |
| 6 | import {installHook} from 'react-devtools-shared/src/hook'; |
| 7 | import setupNativeStyleEditor from 'react-devtools-shared/src/backend/NativeStyleEditor/setupNativeStyleEditor'; |
| 8 | |
| 9 | import type { |
| 10 | BackendBridge, |
| 11 | SavedPreferencesParams, |
| 12 | } from 'react-devtools-shared/src/bridge'; |
| 13 | import type { |
| 14 | ComponentFilter, |
| 15 | Wall, |
| 16 | } from 'react-devtools-shared/src/frontend/types'; |
| 17 | import { |
| 18 | getIfReloadedAndProfiling, |
| 19 | getIsReloadAndProfileSupported, |
| 20 | onReloadAndProfile, |
| 21 | onReloadAndProfileFlagsReset, |
| 22 | } from 'react-devtools-shared/src/utils'; |
| 23 | |
| 24 | let resolveComponentFiltersInjection: (filters: Array<ComponentFilter>) => void; |
| 25 | const componentFiltersPromise = new Promise<Array<ComponentFilter>>(resolve => { |
| 26 | resolveComponentFiltersInjection = resolve; |
| 27 | }); |
| 28 | |
| 29 | function startActivation(contentWindow: any, bridge: BackendBridge) { |
| 30 | const onSavedPreferences = (data: SavedPreferencesParams) => { |
| 31 | // This is the only message we're listening for, |
| 32 | // so it's safe to cleanup after we've received it. |
| 33 | bridge.removeListener('savedPreferences', onSavedPreferences); |
| 34 | |
| 35 | const {componentFilters} = data; |
| 36 | |
| 37 | resolveComponentFiltersInjection(componentFilters); |
| 38 | }; |
| 39 | |
| 40 | componentFiltersPromise.then( |
| 41 | finishActivation.bind(null, contentWindow, bridge), |
| 42 | ); |
| 43 | |
| 44 | bridge.addListener('savedPreferences', onSavedPreferences); |
| 45 | |
| 46 | // The backend may be unable to read saved preferences directly, |
| 47 | // because they are stored in localStorage within the context of the extension (on the frontend). |
| 48 | // Instead it relies on the extension to pass preferences through. |
| 49 | // Because we might be in a sandboxed iframe, we have to ask for them by way of postMessage(). |
| 50 | bridge.send('getSavedPreferences'); |
| 51 | } |
| 52 | |
| 53 | function finishActivation(contentWindow: any, bridge: BackendBridge) { |
| 54 | const agent = new Agent( |
| 55 | bridge, |
| 56 | getIfReloadedAndProfiling(), |
| 57 | onReloadAndProfile, |
| 58 | ); |
| 59 | onReloadAndProfileFlagsReset(); |
| 60 | |
| 61 | const hook = contentWindow.__REACT_DEVTOOLS_GLOBAL_HOOK__; |
| 62 | if (hook) { |
| 63 | initBackend(hook, agent, contentWindow, getIsReloadAndProfileSupported()); |
| 64 | |
| 65 | // Setup React Native style editor if a renderer like react-native-web has injected it. |
| 66 | if (hook.resolveRNStyle) { |
| 67 | setupNativeStyleEditor( |
| 68 | bridge, |
| 69 | agent, |
| 70 | hook.resolveRNStyle, |
| 71 | hook.nativeStyleEditorValidAttributes, |
| 72 | ); |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | export function activate( |
| 78 | contentWindow: any, |
| 79 | { |
| 80 | bridge, |
| 81 | }: { |
| 82 | bridge?: BackendBridge, |
| 83 | } = {}, |
| 84 | ): void { |
| 85 | if (bridge == null) { |
| 86 | bridge = createBridge(contentWindow); |
| 87 | } |
| 88 | |
| 89 | startActivation(contentWindow, bridge); |
| 90 | } |
| 91 | |
| 92 | export function createBridge(contentWindow: any, wall?: Wall): BackendBridge { |
| 93 | const {parent} = contentWindow; |
| 94 | |
| 95 | if (wall == null) { |
| 96 | wall = { |
| 97 | listen(fn) { |
| 98 | const onMessage = ({data}: $FlowFixMe) => { |
| 99 | fn(data); |
| 100 | }; |
| 101 | contentWindow.addEventListener('message', onMessage); |
| 102 | return () => { |
| 103 | contentWindow.removeEventListener('message', onMessage); |
| 104 | }; |
| 105 | }, |
| 106 | send( |
| 107 | event: string, |
| 108 | payload: mixed, |
| 109 | transferable?: $ReadOnlyArray<mixed>, |
| 110 | ) { |
| 111 | parent.postMessage({event, payload}, '*', transferable); |
| 112 | }, |
| 113 | }; |
| 114 | } |
| 115 | |
| 116 | return new Bridge(wall) as BackendBridge; |
| 117 | } |
| 118 | |
| 119 | export function initialize(contentWindow: any): void { |
| 120 | installHook(contentWindow, componentFiltersPromise); |
| 121 | } |