d8bedd851d
We now have types for SerializedValue/SerializedArgument. This will allow us to avoid double parse/serialize for evaluation arguments/results. Drive-by: typing exposed a bug in ElementHandle.dispatchEvent().
72 lines
3.2 KiB
TypeScript
72 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 '../../javascript';
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import { JSHandleChannel, JSHandleInitializer, SerializedArgument } from '../channels';
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import { Dispatcher, DispatcherScope } from './dispatcher';
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import { parseEvaluationResultValue, serializeAsCallArgument, SerializedValue } from '../../common/utilityScriptSerializers';
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import { createHandle } from './elementHandlerDispatcher';
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export class JSHandleDispatcher extends Dispatcher<js.JSHandle, JSHandleInitializer> implements 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: { expression: string, isFunction: boolean, arg: SerializedArgument }): Promise<{ value: SerializedValue }> {
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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: { expression: string, isFunction: boolean, arg: SerializedArgument}): Promise<{ handle: JSHandleChannel }> {
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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: { name: string }): Promise<{ handle: JSHandleChannel }> {
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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<{ properties: { name: string, value: JSHandleChannel }[] }> {
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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<{ value: SerializedValue }> {
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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: SerializedArgument): any {
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return parseEvaluationResultValue(arg.value, arg.handles.map(arg => (arg as JSHandleDispatcher)._object));
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}
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export function serializeResult(arg: any): SerializedValue {
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return serializeAsCallArgument(arg, value => ({ fallThrough: value }));
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}
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