mirror of https://github.com/electron/electron
54 lines
2.5 KiB
TypeScript
54 lines
2.5 KiB
TypeScript
import { ipcRendererInternal } from '@electron/internal/renderer/ipc-renderer-internal';
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import { internalContextBridge } from '@electron/internal/renderer/api/context-bridge';
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import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
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const { contextIsolationEnabled } = internalContextBridge;
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export const windowSetup = (isWebView: boolean, isHiddenPage: boolean) => {
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if (!process.sandboxed && !isWebView) {
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// Override default window.close.
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window.close = function () {
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ipcRendererInternal.send(IPC_MESSAGES.BROWSER_WINDOW_CLOSE);
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};
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if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueFromIsolatedWorld(['close'], window.close);
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}
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// But we do not support prompt().
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window.prompt = function () {
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throw new Error('prompt() is and will not be supported.');
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};
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if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueFromIsolatedWorld(['prompt'], window.prompt);
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if (isWebView) {
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// Webview `document.visibilityState` tracks window visibility (and ignores
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// the actual <webview> element visibility) for backwards compatibility.
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// See discussion in #9178.
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//
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// Note that this results in duplicate visibilitychange events (since
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// Chromium also fires them) and potentially incorrect visibility change.
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// We should reconsider this decision for Electron 2.0.
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let cachedVisibilityState = isHiddenPage ? 'hidden' : 'visible';
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// Subscribe to visibilityState changes.
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ipcRendererInternal.on(IPC_MESSAGES.GUEST_INSTANCE_VISIBILITY_CHANGE, function (_event, visibilityState: DocumentVisibilityState) {
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if (cachedVisibilityState !== visibilityState) {
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cachedVisibilityState = visibilityState;
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document.dispatchEvent(new Event('visibilitychange'));
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}
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});
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// Make document.hidden and document.visibilityState return the correct value.
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const getDocumentHidden = () => cachedVisibilityState !== 'visible';
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Object.defineProperty(document, 'hidden', {
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get: getDocumentHidden
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});
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if (contextIsolationEnabled) internalContextBridge.overrideGlobalPropertyFromIsolatedWorld(['document', 'hidden'], getDocumentHidden);
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const getDocumentVisibilityState = () => cachedVisibilityState;
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Object.defineProperty(document, 'visibilityState', {
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get: getDocumentVisibilityState
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});
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if (contextIsolationEnabled) internalContextBridge.overrideGlobalPropertyFromIsolatedWorld(['document', 'visibilityState'], getDocumentVisibilityState);
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}
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};
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