1/**
2 * Copyright 2017 Google Inc. All rights reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16import { CDPSession } from './Connection.js';
17import { Viewport } from './PuppeteerViewport.js';
18import { Protocol } from 'devtools-protocol';
19
20export class EmulationManager {
21  _client: CDPSession;
22  _emulatingMobile = false;
23  _hasTouch = false;
24
25  constructor(client: CDPSession) {
26    this._client = client;
27  }
28
29  async emulateViewport(viewport: Viewport): Promise<boolean> {
30    const mobile = viewport.isMobile || false;
31    const width = viewport.width;
32    const height = viewport.height;
33    const deviceScaleFactor = viewport.deviceScaleFactor || 1;
34    const screenOrientation: Protocol.Emulation.ScreenOrientation =
35      viewport.isLandscape
36        ? { angle: 90, type: 'landscapePrimary' }
37        : { angle: 0, type: 'portraitPrimary' };
38    const hasTouch = viewport.hasTouch || false;
39
40    await Promise.all([
41      this._client.send('Emulation.setDeviceMetricsOverride', {
42        mobile,
43        width,
44        height,
45        deviceScaleFactor,
46        screenOrientation,
47      }),
48      this._client.send('Emulation.setTouchEmulationEnabled', {
49        enabled: hasTouch,
50      }),
51    ]);
52
53    const reloadNeeded =
54      this._emulatingMobile !== mobile || this._hasTouch !== hasTouch;
55    this._emulatingMobile = mobile;
56    this._hasTouch = hasTouch;
57    return reloadNeeded;
58  }
59}
60