64 lines
2.8 KiB
TypeScript
64 lines
2.8 KiB
TypeScript
|
/**
|
||
|
|
* Copyright 2018 Google Inc. All rights reserved.
|
||
|
|
* Modifications copyright (c) Microsoft Corporation.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
import { EventEmitter } from 'events';
|
||
|
|
import { CDPSession } from './Connection';
|
||
|
|
import { ExecutionContext } from './ExecutionContext';
|
||
|
|
import { debugError } from '../helper';
|
||
|
|
import { JSHandle } from './JSHandle';
|
||
|
|
import { Protocol } from './protocol';
|
||
|
|
|
||
|
|
export class Worker extends EventEmitter {
|
||
|
|
private _client: CDPSession;
|
||
|
|
private _url: string;
|
||
|
|
private _executionContextPromise: Promise<ExecutionContext>;
|
||
|
|
private _executionContextCallback: (value?: ExecutionContext) => void;
|
||
|
|
|
||
|
|
constructor(client: CDPSession, url: string, consoleAPICalled: (arg0: string, arg1: JSHandle[], arg2: Protocol.Runtime.StackTrace | undefined) => void, exceptionThrown: (arg0: Protocol.Runtime.ExceptionDetails) => void) {
|
||
|
|
super();
|
||
|
|
this._client = client;
|
||
|
|
this._url = url;
|
||
|
|
this._executionContextPromise = new Promise(x => this._executionContextCallback = x);
|
||
|
|
let jsHandleFactory: (o: Protocol.Runtime.RemoteObject) => JSHandle;
|
||
|
|
this._client.once('Runtime.executionContextCreated', async event => {
|
||
|
|
jsHandleFactory = remoteObject => new JSHandle(executionContext, client, remoteObject);
|
||
|
|
const executionContext = new ExecutionContext(client, event.context, null);
|
||
|
|
this._executionContextCallback(executionContext);
|
||
|
|
});
|
||
|
|
// This might fail if the target is closed before we recieve all execution contexts.
|
||
|
|
this._client.send('Runtime.enable', {}).catch(debugError);
|
||
|
|
|
||
|
|
this._client.on('Runtime.consoleAPICalled', event => consoleAPICalled(event.type, event.args.map(jsHandleFactory), event.stackTrace));
|
||
|
|
this._client.on('Runtime.exceptionThrown', exception => exceptionThrown(exception.exceptionDetails));
|
||
|
|
}
|
||
|
|
|
||
|
|
url(): string {
|
||
|
|
return this._url;
|
||
|
|
}
|
||
|
|
|
||
|
|
async executionContext(): Promise<ExecutionContext> {
|
||
|
|
return this._executionContextPromise;
|
||
|
|
}
|
||
|
|
|
||
|
|
async evaluate(pageFunction: Function | string, ...args: any[]): Promise<any> {
|
||
|
|
return (await this._executionContextPromise).evaluate(pageFunction, ...args);
|
||
|
|
}
|
||
|
|
|
||
|
|
async evaluateHandle(pageFunction: Function | string, ...args: any[]): Promise<JSHandle> {
|
||
|
|
return (await this._executionContextPromise).evaluateHandle(pageFunction, ...args);
|
||
|
|
}
|
||
|
|
}
|