84 lines
2.6 KiB
TypeScript
84 lines
2.6 KiB
TypeScript
import { EventEmitter } from 'events';
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import deprecate from '@electron/internal/common/api/deprecate';
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const binding = process._linkedBinding('electron_renderer_web_frame');
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class WebFrame extends EventEmitter {
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constructor (public context: Window) {
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super();
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// Lots of webview would subscribe to webFrame's events.
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this.setMaxListeners(0);
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}
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findFrameByRoutingId (...args: Array<any>) {
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return getWebFrame(binding._findFrameByRoutingId(this.context, ...args));
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}
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getFrameForSelector (...args: Array<any>) {
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return getWebFrame(binding._getFrameForSelector(this.context, ...args));
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}
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findFrameByName (...args: Array<any>) {
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return getWebFrame(binding._findFrameByName(this.context, ...args));
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}
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get opener () {
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return getWebFrame(binding._getOpener(this.context));
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}
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get parent () {
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return getWebFrame(binding._getParent(this.context));
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}
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get top () {
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return getWebFrame(binding._getTop(this.context));
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}
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get firstChild () {
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return getWebFrame(binding._getFirstChild(this.context));
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}
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get nextSibling () {
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return getWebFrame(binding._getNextSibling(this.context));
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}
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get routingId () {
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return binding._getRoutingId(this.context);
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}
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}
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const contextIsolation = binding.getWebPreference(window, 'contextIsolation');
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const worldSafeExecuteJavaScript = binding.getWebPreference(window, 'worldSafeExecuteJavaScript');
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const worldSafeJS = worldSafeExecuteJavaScript || !contextIsolation;
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// Populate the methods.
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for (const name in binding) {
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if (!name.startsWith('_')) { // some methods are manually populated above
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// TODO(felixrieseberg): Once we can type web_frame natives, we could
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// use a neat `keyof` here
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(WebFrame as any).prototype[name] = function (...args: Array<any>) {
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if (!worldSafeJS && name.startsWith('executeJavaScript')) {
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deprecate.log(`Security Warning: webFrame.${name} was called without worldSafeExecuteJavaScript enabled. This is considered unsafe. worldSafeExecuteJavaScript will be enabled by default in Electron 12.`);
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}
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return binding[name](this.context, ...args);
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};
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// TODO(MarshallOfSound): Remove once the above deprecation is removed
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if (name.startsWith('executeJavaScript')) {
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(WebFrame as any).prototype[`_${name}`] = function (...args: Array<any>) {
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return binding[name](this.context, ...args);
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};
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}
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}
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}
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// Helper to return WebFrame or null depending on context.
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// TODO(zcbenz): Consider returning same WebFrame for the same frame.
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function getWebFrame (context: Window) {
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return context ? new WebFrame(context) : null;
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}
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const _webFrame = new WebFrame(window);
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export default _webFrame;
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