/**
 * Copyright 2017 Google Inc. All rights reserved.
 *
 * 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 type { Protocol } from 'devtools-protocol';
import { type CDPSession } from '../api/CDPSession.js';
import type { GeolocationOptions, MediaFeature } from '../api/Page.js';
import type { Viewport } from '../common/Viewport.js';
/**
 * @internal
 */
export interface ClientProvider {
    clients(): CDPSession[];
    registerState(state: EmulatedState<any>): void;
}
/**
 * @internal
 */
export declare class EmulatedState<T extends {
    active: boolean;
}> {
    #private;
    constructor(initialState: T, clientProvider: ClientProvider, updater: (client: CDPSession, state: T) => Promise<void>);
    setState(state: T): Promise<void>;
    get state(): T;
    sync(): Promise<void>;
}
/**
 * @internal
 */
export declare class EmulationManager {
    #private;
    constructor(client: CDPSession);
    updateClient(client: CDPSession): void;
    registerState(state: EmulatedState<any>): void;
    clients(): CDPSession[];
    registerSpeculativeSession(client: CDPSession): Promise<void>;
    get javascriptEnabled(): boolean;
    emulateViewport(viewport: Viewport): Promise<boolean>;
    emulateIdleState(overrides?: {
        isUserActive: boolean;
        isScreenUnlocked: boolean;
    }): Promise<void>;
    emulateTimezone(timezoneId?: string): Promise<void>;
    emulateVisionDeficiency(type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']): Promise<void>;
    emulateCPUThrottling(factor: number | null): Promise<void>;
    emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;
    emulateMediaType(type?: string): Promise<void>;
    setGeolocation(options: GeolocationOptions): Promise<void>;
    /**
     * Resets default white background
     */
    resetDefaultBackgroundColor(): Promise<void>;
    /**
     * Hides default white background
     */
    setTransparentBackgroundColor(): Promise<void>;
    setJavaScriptEnabled(enabled: boolean): Promise<void>;
}
//# sourceMappingURL=EmulationManager.d.ts.map