| 1 | /** @flow */ |
| 2 | |
| 3 | import type {UnknownMessageEvent} from './messages'; |
| 4 | import type {DevToolsHookSettings} from 'react-devtools-shared/src/backend/types'; |
| 5 | import type {ComponentFilter} from 'react-devtools-shared/src/frontend/types'; |
| 6 | |
| 7 | import {installHook} from 'react-devtools-shared/src/hook'; |
| 8 | import { |
| 9 | getIfReloadedAndProfiling, |
| 10 | getProfilingSettings, |
| 11 | } from 'react-devtools-shared/src/utils'; |
| 12 | import {postMessage} from './messages'; |
| 13 | import {createReactRendererListener} from './reactBuildType'; |
| 14 | |
| 15 | let resolveHookSettingsInjection: (settings: DevToolsHookSettings) => void; |
| 16 | let resolveComponentFiltersInjection: (filters: Array<ComponentFilter>) => void; |
| 17 | |
| 18 | function messageListener(event: UnknownMessageEvent) { |
| 19 | if (event.source !== window) { |
| 20 | return; |
| 21 | } |
| 22 | |
| 23 | if (event.data.source === 'react-devtools-settings-injector') { |
| 24 | const payload = event.data.payload; |
| 25 | // In case handshake message was sent prior to hookSettingsInjector execution |
| 26 | // We can't guarantee order |
| 27 | if (payload.handshake) { |
| 28 | postMessage({ |
| 29 | source: 'react-devtools-hook-installer', |
| 30 | payload: {handshake: true}, |
| 31 | }); |
| 32 | } else if (payload.hookSettings) { |
| 33 | window.removeEventListener('message', messageListener); |
| 34 | resolveHookSettingsInjection(payload.hookSettings); |
| 35 | resolveComponentFiltersInjection(payload.componentFilters); |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | // Avoid double execution |
| 41 | if (!window.hasOwnProperty('__REACT_DEVTOOLS_GLOBAL_HOOK__')) { |
| 42 | const hookSettingsPromise = new Promise<DevToolsHookSettings>(resolve => { |
| 43 | resolveHookSettingsInjection = resolve; |
| 44 | }); |
| 45 | const componentFiltersPromise = new Promise<Array<ComponentFilter>>( |
| 46 | resolve => { |
| 47 | resolveComponentFiltersInjection = resolve; |
| 48 | }, |
| 49 | ); |
| 50 | |
| 51 | window.addEventListener('message', messageListener); |
| 52 | postMessage({ |
| 53 | source: 'react-devtools-hook-installer', |
| 54 | payload: {handshake: true}, |
| 55 | }); |
| 56 | |
| 57 | const shouldStartProfiling = getIfReloadedAndProfiling(); |
| 58 | const profilingSettings = getProfilingSettings(); |
| 59 | // Can't delay hook installation, inject settings lazily |
| 60 | installHook( |
| 61 | window, |
| 62 | componentFiltersPromise, |
| 63 | hookSettingsPromise, |
| 64 | shouldStartProfiling, |
| 65 | profilingSettings, |
| 66 | ); |
| 67 | |
| 68 | // Detect React |
| 69 | window.__REACT_DEVTOOLS_GLOBAL_HOOK__.on( |
| 70 | 'renderer', |
| 71 | createReactRendererListener(window), |
| 72 | ); |
| 73 | } |