76 lines
3.2 KiB
TypeScript
76 lines
3.2 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import * as js from '../../server/javascript';
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import * as channels from '../../protocol/channels';
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import { Dispatcher, DispatcherScope } from './dispatcher';
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import { createHandle } from './elementHandlerDispatcher';
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import { parseSerializedValue, serializeValue } from '../../protocol/serializers';
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export class JSHandleDispatcher extends Dispatcher<js.JSHandle, channels.JSHandleInitializer> implements channels.JSHandleChannel {
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constructor(scope: DispatcherScope, jsHandle: js.JSHandle) {
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super(scope, jsHandle, jsHandle.asElement() ? 'ElementHandle' : 'JSHandle', {
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preview: jsHandle.toString(),
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});
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jsHandle._setPreviewCallback(preview => this._dispatchEvent('previewUpdated', { preview }));
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}
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async evaluateExpression(params: channels.JSHandleEvaluateExpressionParams): Promise<channels.JSHandleEvaluateExpressionResult> {
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return { value: serializeResult(await this._object._evaluateExpression(params.expression, params.isFunction, true /* returnByValue */, parseArgument(params.arg))) };
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}
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async evaluateExpressionHandle(params: channels.JSHandleEvaluateExpressionHandleParams): Promise<channels.JSHandleEvaluateExpressionHandleResult> {
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const jsHandle = await this._object._evaluateExpression(params.expression, params.isFunction, false /* returnByValue */, parseArgument(params.arg));
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return { handle: createHandle(this._scope, jsHandle) };
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}
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async getProperty(params: channels.JSHandleGetPropertyParams): Promise<channels.JSHandleGetPropertyResult> {
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const jsHandle = await this._object.getProperty(params.name);
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return { handle: createHandle(this._scope, jsHandle) };
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}
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async getPropertyList(): Promise<channels.JSHandleGetPropertyListResult> {
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const map = await this._object.getProperties();
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const properties = [];
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for (const [name, value] of map)
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properties.push({ name, value: new JSHandleDispatcher(this._scope, value) });
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return { properties };
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}
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async jsonValue(): Promise<channels.JSHandleJsonValueResult> {
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return { value: serializeResult(await this._object.jsonValue()) };
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}
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async dispose() {
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await this._object.dispose();
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}
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}
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// Generic channel parser converts guids to JSHandleDispatchers,
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// and this function takes care of coverting them into underlying JSHandles.
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export function parseArgument(arg: channels.SerializedArgument): any {
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return parseSerializedValue(arg.value, arg.handles.map(a => (a as JSHandleDispatcher)._object));
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}
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export function parseValue(v: channels.SerializedValue): any {
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return parseSerializedValue(v, []);
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}
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export function serializeResult(arg: any): channels.SerializedValue {
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return serializeValue(arg, value => ({ fallThrough: value }), new Set());
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}
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