332 lines
8.2 KiB
JavaScript
332 lines
8.2 KiB
JavaScript
/**
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* Copyright 2017 Google Inc. All rights reserved.
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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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const keyDefinitions = require('./USKeyboardLayout');
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const os = require('os');
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/**
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* @typedef {Object} KeyDescription
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* @property {number} keyCode
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* @property {string} key
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* @property {string} text
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* @property {string} code
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* @property {number} location
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*/
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class Keyboard {
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constructor(client) {
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this._client = client;
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this._modifiers = 0;
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this._pressedKeys = new Set();
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}
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/**
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* @param {string} key
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*/
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async down(key) {
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const description = this._keyDescriptionForString(key);
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const repeat = this._pressedKeys.has(description.code);
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this._pressedKeys.add(description.code);
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this._modifiers |= this._modifierBit(description.key);
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await this._client.send('Page.dispatchKeyEvent', {
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type: 'keydown',
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keyCode: description.keyCode,
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code: description.code,
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key: description.key,
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repeat,
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location: description.location
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});
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}
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/**
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* @param {string} key
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* @return {number}
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*/
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_modifierBit(key) {
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if (key === 'Alt')
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return 1;
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if (key === 'Control')
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return 2;
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if (key === 'Shift')
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return 4;
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if (key === 'Meta')
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return 8;
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return 0;
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}
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/**
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* @param {string} keyString
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* @return {KeyDescription}
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*/
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_keyDescriptionForString(keyString) {
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const shift = this._modifiers & 8;
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const description = {
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key: '',
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keyCode: 0,
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code: '',
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text: '',
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location: 0
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};
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const definition = keyDefinitions[keyString];
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if (!definition)
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throw new Error(`Unknown key: "${keyString}"`);
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if (definition.key)
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description.key = definition.key;
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if (shift && definition.shiftKey)
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description.key = definition.shiftKey;
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if (definition.keyCode)
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description.keyCode = definition.keyCode;
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if (shift && definition.shiftKeyCode)
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description.keyCode = definition.shiftKeyCode;
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if (definition.code)
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description.code = definition.code;
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if (definition.location)
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description.location = definition.location;
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if (description.key.length === 1)
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description.text = description.key;
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if (definition.text)
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description.text = definition.text;
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if (shift && definition.shiftText)
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description.text = definition.shiftText;
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// if any modifiers besides shift are pressed, no text should be sent
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if (this._modifiers & ~8)
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description.text = '';
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if (description.code === 'MetaLeft')
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description.code = 'OSLeft';
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if (description.code === 'MetaRight')
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description.code = 'OSRight';
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return description;
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}
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/**
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* @param {string} key
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*/
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async up(key) {
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const description = this._keyDescriptionForString(key);
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this._modifiers &= ~this._modifierBit(description.key);
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this._pressedKeys.delete(description.code);
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await this._client.send('Page.dispatchKeyEvent', {
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type: 'keyup',
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key: description.key,
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keyCode: description.keyCode,
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code: description.code,
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location: description.location,
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repeat: false
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});
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}
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/**
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* @param {string} char
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*/
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async sendCharacter(char) {
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await this._client.send('Page.insertText', {
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text: char
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});
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}
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/**
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* @param {string} text
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* @param {!{delay?: number}=} options
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*/
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async type(text, options = {}) {
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const {delay = null} = options;
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for (const char of text) {
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if (keyDefinitions[char])
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await this.press(char, {delay});
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else
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await this.sendCharacter(char);
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if (delay !== null)
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await new Promise(f => setTimeout(f, delay));
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}
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}
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/**
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* @param {string} key
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* @param {!{delay?: number}=} options
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*/
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async press(key, options = {}) {
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const {delay = null} = options;
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await this.down(key);
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if (delay !== null)
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await new Promise(f => setTimeout(f, options.delay));
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await this.up(key);
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}
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}
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class Mouse {
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/**
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* @param {!Keyboard} keyboard
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*/
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constructor(client, keyboard) {
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this._client = client;
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this._keyboard = keyboard;
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this._x = 0;
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this._y = 0;
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this._buttons = 0;
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}
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/**
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* @param {number} x
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* @param {number} y
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* @param {{steps?: number}=} options
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*/
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async move(x, y, options = {}) {
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const {steps = 1} = options;
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const fromX = this._x, fromY = this._y;
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this._x = x;
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this._y = y;
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for (let i = 1; i <= steps; i++) {
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await this._client.send('Page.dispatchMouseEvent', {
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type: 'mousemove',
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button: 0,
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x: fromX + (this._x - fromX) * (i / steps),
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y: fromY + (this._y - fromY) * (i / steps),
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modifiers: this._keyboard._modifiers,
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buttons: this._buttons,
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});
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}
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}
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/**
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* @param {number} x
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* @param {number} y
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* @param {!{delay?: number, button?: string, clickCount?: number}=} options
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*/
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async click(x, y, options = {}) {
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const {delay = null} = options;
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this.move(x, y);
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this.down(options);
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if (delay !== null)
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await new Promise(f => setTimeout(f, delay));
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await this.up(options);
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}
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/**
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* @param {!{button?: string, clickCount?: number}=} options
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*/
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async down(options = {}) {
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const {
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button = "left",
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clickCount = 1
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} = options;
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if (button === 'left')
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this._buttons |= 1;
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if (button === 'right')
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this._buttons |= 2;
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if (button === 'middle')
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this._buttons |= 4;
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await this._client.send('Page.dispatchMouseEvent', {
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type: 'mousedown',
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button: this._buttonNameToButton(button),
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x: this._x,
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y: this._y,
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modifiers: this._keyboard._modifiers,
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clickCount,
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buttons: this._buttons,
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});
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}
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/**
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* @param {string} buttonName
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* @return {number}
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*/
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_buttonNameToButton(buttonName) {
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if (buttonName === 'left')
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return 0;
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if (buttonName === 'middle')
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return 1;
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if (buttonName === 'right')
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return 2;
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}
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/**
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* @param {!{button?: string, clickCount?: number}=} options
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*/
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async up(options = {}) {
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const {
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button = "left",
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clickCount = 1
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} = options;
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if (button === 'left')
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this._buttons &= ~1;
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if (button === 'right')
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this._buttons &= ~2;
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if (button === 'middle')
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this._buttons &= ~4;
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await this._client.send('Page.dispatchMouseEvent', {
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type: 'mouseup',
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button: this._buttonNameToButton(button),
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x: this._x,
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y: this._y,
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modifiers: this._keyboard._modifiers,
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clickCount: clickCount,
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buttons: this._buttons,
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});
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}
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}
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class Touchscreen {
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/**
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* @param {Puppeteer.JugglerSession} client
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* @param {Keyboard} keyboard
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* @param {Mouse} mouse
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*/
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constructor(client, keyboard, mouse) {
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this._client = client;
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this._keyboard = keyboard;
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this._mouse = mouse;
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}
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/**
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* @param {number} x
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* @param {number} y
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*/
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async tap(x, y) {
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const touchPoints = [{x: Math.round(x), y: Math.round(y)}];
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let {defaultPrevented} = (await this._client.send('Page.dispatchTouchEvent', {
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type: 'touchStart',
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touchPoints,
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modifiers: this._keyboard._modifiers
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}));
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defaultPrevented = (await this._client.send('Page.dispatchTouchEvent', {
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type: 'touchEnd',
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touchPoints,
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modifiers: this._keyboard._modifiers
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})).defaultPrevented || defaultPrevented;
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// Do not dispatch related mouse events if either of touch events
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// were prevented.
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// See https://developer.mozilla.org/en-US/docs/Web/API/Touch_events/Supporting_both_TouchEvent_and_MouseEvent#Event_order
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if (defaultPrevented)
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return;
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await this._mouse.move(x, y);
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await this._mouse.down();
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await this._mouse.up();
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}
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}
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module.exports = { Keyboard, Mouse, Touchscreen };
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