electron/lib/renderer/web-frame-init.ts
Samuel Attard 3b74837020 refactor: Split 'Event' docs/types into more specific Event types (#17038)
* Event = Base event type (with preventDefault)
* IpcMainEvent = Event that ipcMain emits (with sender, reply, etc.)
* IpcRendererEvent = Event that ipcRenderer emits (with sender,
senderId, etc.)
* KeyboardEvent = Event that we emit with keyboard flags (ctrlKey,
altKey, etc.)

This will dramatically improve peoples TS experience with IPC events
2019-02-19 09:24:19 +00:00

38 lines
1.4 KiB
TypeScript

import { webFrame, WebFrame } from 'electron'
import { ipcRendererInternal } from '@electron/internal/renderer/ipc-renderer-internal'
import * as errorUtils from '@electron/internal/common/error-utils'
// All keys of WebFrame that extend Function
type WebFrameMethod = {
[K in keyof WebFrame]:
WebFrame[K] extends Function ? K : never
}
export const webFrameInit = () => {
// Call webFrame method
ipcRendererInternal.on('ELECTRON_INTERNAL_RENDERER_WEB_FRAME_METHOD', (
_event, method: keyof WebFrameMethod, args: any[]
) => {
// The TypeScript compiler cannot handle the sheer number of
// call signatures here and simply gives up. Incorrect invocations
// will be caught by "keyof WebFrameMethod" though.
(webFrame[method] as any)(...args)
})
ipcRendererInternal.on('ELECTRON_INTERNAL_RENDERER_ASYNC_WEB_FRAME_METHOD', (
event, requestId: number, method: keyof WebFrameMethod, args: any[]
) => {
new Promise(resolve =>
// The TypeScript compiler cannot handle the sheer number of
// call signatures here and simply gives up. Incorrect invocations
// will be caught by "keyof WebFrameMethod" though.
(webFrame[method] as any)(...args, resolve)
).then(result => {
return [null, result]
}, error => {
return [errorUtils.serialize(error)]
}).then(responseArgs => {
event.sender.send(`ELECTRON_INTERNAL_BROWSER_ASYNC_WEB_FRAME_RESPONSE_${requestId}`, ...responseArgs)
})
})
}