electron/lib/renderer/web-view/web-view-init.js

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'use strict'
const ipcRenderer = require('@electron/internal/renderer/ipc-renderer-internal')
const v8Util = process.atomBinding('v8_util')
function handleFocusBlur (guestInstanceId) {
// Note that while Chromium content APIs have observer for focus/blur, they
// unfortunately do not work for webview.
window.addEventListener('focus', () => {
ipcRenderer.send('ELECTRON_GUEST_VIEW_MANAGER_FOCUS_CHANGE', true, guestInstanceId)
})
window.addEventListener('blur', () => {
ipcRenderer.send('ELECTRON_GUEST_VIEW_MANAGER_FOCUS_CHANGE', false, guestInstanceId)
})
}
module.exports = function (contextIsolation, webviewTag, guestInstanceId) {
// Load webview tag implementation.
if (webviewTag && guestInstanceId == null) {
const webViewImpl = require('@electron/internal/renderer/web-view/web-view-impl')
if (contextIsolation) {
v8Util.setHiddenValue(window, 'web-view-impl', webViewImpl)
} else {
const { setupWebView } = require('@electron/internal/renderer/web-view/web-view-element')
setupWebView(v8Util, webViewImpl)
}
}
if (guestInstanceId) {
// Report focus/blur events of webview to browser.
handleFocusBlur(guestInstanceId)
}
}