puppeteer/lib/Keyboard.js

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/**
* 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.
*/
const helper = require('./helper');
class Keyboard {
/**
* @param {!Connection} client
*/
constructor(client) {
this._client = client;
/** @type {!Set<string>} */
this._keys = new Set();
}
/**
* @param {string} key
* @param {{text: (string|undefined)}} options
* @return {!Promise}
*/
async down(key, options) {
let {text} = options || {};
this._keys.add(key);
await this._client.send('Input.dispatchKeyEvent', {
type: text ? 'keyDown' : 'rawKeyDown',
modifiers: this._modifiersMask(),
windowsVirtualKeyCode: codeForKey(key),
key: key,
text: text,
unmodifiedText: text
});
}
/**
* @param {{Shift: boolean, Alt: boolean, Meta: boolean, Control: boolean}}
*/
modifiers() {
return {
Shift: this._keys.has('Shift'),
Alt: this._keys.has('Alt'),
Meta: this._keys.has('Meta'),
Control: this._keys.has('Control')
};
}
/**
* @param {string} key
* @return {!Promise}
*/
async up(key) {
this._keys.delete(key);
await this._client.send('Input.dispatchKeyEvent', {
type: 'keyUp',
modifiers: this._modifiersMask(),
key,
windowsVirtualKeyCode: codeForKey(key),
});
}
/**
* @param {string} char
* @return {!Promise}
*/
async sendCharacter(char) {
await this._client.send('Input.dispatchKeyEvent', {
type: 'char',
modifiers: this._modifiersMask(),
text: char,
key: char,
unmodifiedText: char
});
}
/**
* @return {number}
*/
_modifiersMask() {
let modifiers = 0;
if (this._keys.has('Alt'))
modifiers += 1;
if (this._keys.has('Control'))
modifiers += 2;
if (this._keys.has('Meta'))
modifiers += 4;
if (this._keys.has('Shift'))
modifiers += 8;
return modifiers;
}
}
let keys = {
'Cancel': 3,
'Help': 6,
'Backspace': 8,
'Tab': 9,
'Clear': 12,
'Enter': 13,
'Shift': 16,
'Control': 17,
'Alt': 18,
'Pause': 19,
'CapsLock': 20,
'Escape': 27,
'Convert': 28,
'NonConvert': 29,
'Accept': 30,
'ModeChange': 31,
'PageUp': 33,
'PageDown': 34,
'End': 35,
'Home': 36,
'ArrowLeft': 37,
'ArrowUp': 38,
'ArrowRight': 39,
'ArrowDown': 40,
'Select': 41,
'Print': 42,
'Execute': 43,
'PrintScreen': 44,
'Insert': 45,
'Delete': 46,
')': 48,
'!': 49,
'@': 50,
'#': 51,
'$': 52,
'%': 53,
'^': 54,
'&': 55,
'*': 56,
'(': 57,
'Meta': 91,
'ContextMenu': 93,
'F1': 112,
'F2': 113,
'F3': 114,
'F4': 115,
'F5': 116,
'F6': 117,
'F7': 118,
'F8': 119,
'F9': 120,
'F10': 121,
'F11': 122,
'F12': 123,
'F13': 124,
'F14': 125,
'F15': 126,
'F16': 127,
'F17': 128,
'F18': 129,
'F19': 130,
'F20': 131,
'F21': 132,
'F22': 133,
'F23': 134,
'F24': 135,
'NumLock': 144,
'ScrollLock': 145,
'VolumeMute': 181,
'VolumeDown': 182,
'VolumeUp': 183,
';': 186,
':': 186,
'=': 187,
'+': 187,
',': 188,
'<': 188,
'-': 189,
'_': 189,
'.': 190,
'>': 190,
'/': 191,
'?': 191,
'`': 192,
'~': 192,
'[': 219,
'{': 219,
'\\': 220,
'|': 220,
']': 221,
'}': 221,
'\'': 222,
'"': 222,
'AltGraph': 225,
'Attn': 246,
'CrSel': 247,
'ExSel': 248,
'EraseEof': 249,
'Play': 250,
'ZoomOut': 251
};
/**
* @param {string} key
* @return {number}
*/
function codeForKey(key) {
if (keys[key])
return keys[key];
if (key.length === 1)
return key.toUpperCase().charCodeAt(0);
return 0;
}
module.exports = Keyboard;
helper.tracePublicAPI(Keyboard);