1 | /**
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2 | * Copyright 2017 Google Inc. All rights reserved.
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 |
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17 | class EmulationManager {
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18 | /**
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19 | * @param {!Puppeteer.CDPSession} client
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20 | */
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21 | constructor(client) {
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22 | this._client = client;
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23 | this._emulatingMobile = false;
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24 | this._hasTouch = false;
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25 | }
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26 |
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27 | /**
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28 | * @param {!EmulationManager.Viewport} viewport
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29 | * @return {Promise<boolean>}
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30 | */
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31 | async emulateViewport(viewport) {
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32 | const mobile = viewport.isMobile || false;
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33 | const width = viewport.width;
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34 | const height = viewport.height;
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35 | const deviceScaleFactor = viewport.deviceScaleFactor || 1;
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36 | /** @type {Protocol.Emulation.ScreenOrientation} */
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37 | const screenOrientation = viewport.isLandscape ? { angle: 90, type: 'landscapePrimary' } : { angle: 0, type: 'portraitPrimary' };
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38 | const hasTouch = viewport.hasTouch || false;
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39 |
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40 | await Promise.all([
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41 | this._client.send('Emulation.setDeviceMetricsOverride', { mobile, width, height, deviceScaleFactor, screenOrientation }),
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42 | this._client.send('Emulation.setTouchEmulationEnabled', {
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43 | enabled: hasTouch
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44 | })
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45 | ]);
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46 |
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47 | const reloadNeeded = this._emulatingMobile !== mobile || this._hasTouch !== hasTouch;
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48 | this._emulatingMobile = mobile;
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49 | this._hasTouch = hasTouch;
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50 | return reloadNeeded;
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51 | }
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52 | }
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53 |
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54 | /**
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55 | * @typedef {Object} EmulationManager.Viewport
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56 | * @property {number} width
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57 | * @property {number} height
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58 | * @property {number=} deviceScaleFactor
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59 | * @property {boolean=} isMobile
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60 | * @property {boolean=} isLandscape
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61 | * @property {boolean=} hasTouch
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62 | */
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63 |
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64 | module.exports = EmulationManager;
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