535 lines
16 KiB
TypeScript
535 lines
16 KiB
TypeScript
/**
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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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import { assert } from './assert';
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import { CDPSession } from './Connection';
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import { keyDefinitions, KeyDefinition, KeyInput } from './USKeyboardLayout';
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type KeyDescription = Required<
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Pick<KeyDefinition, 'keyCode' | 'key' | 'text' | 'code' | 'location'>
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>;
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/**
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* Keyboard provides an api for managing a virtual keyboard.
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* The high level api is {@link Keyboard."type"},
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* which takes raw characters and generates proper keydown, keypress/input,
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* and keyup events on your page.
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*
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* @remarks
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* For finer control, you can use {@link Keyboard.down},
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* {@link Keyboard.up}, and {@link Keyboard.sendCharacter}
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* to manually fire events as if they were generated from a real keyboard.
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*
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* On MacOS, keyboard shortcuts like `⌘ A` -\> Select All do not work.
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* See {@link https://github.com/puppeteer/puppeteer/issues/1313 | #1313}.
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*
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* @example
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* An example of holding down `Shift` in order to select and delete some text:
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* ```js
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* await page.keyboard.type('Hello World!');
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* await page.keyboard.press('ArrowLeft');
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*
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* await page.keyboard.down('Shift');
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* for (let i = 0; i < ' World'.length; i++)
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* await page.keyboard.press('ArrowLeft');
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* await page.keyboard.up('Shift');
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*
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* await page.keyboard.press('Backspace');
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* // Result text will end up saying 'Hello!'
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* ```
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*
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* @example
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* An example of pressing `A`
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* ```js
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* await page.keyboard.down('Shift');
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* await page.keyboard.press('KeyA');
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* await page.keyboard.up('Shift');
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* ```
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*
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* @public
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*/
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export class Keyboard {
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private _client: CDPSession;
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/** @internal */
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_modifiers = 0;
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private _pressedKeys = new Set<string>();
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/** @internal */
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constructor(client: CDPSession) {
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this._client = client;
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}
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/**
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* Dispatches a `keydown` event.
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*
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* @remarks
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* If `key` is a single character and no modifier keys besides `Shift`
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* are being held down, a `keypress`/`input` event will also generated.
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* The `text` option can be specified to force an input event to be generated.
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* If `key` is a modifier key, `Shift`, `Meta`, `Control`, or `Alt`,
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* subsequent key presses will be sent with that modifier active.
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* To release the modifier key, use {@link Keyboard.up}.
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*
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* After the key is pressed once, subsequent calls to
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* {@link Keyboard.down} will have
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* {@link https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/repeat | repeat}
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* set to true. To release the key, use {@link Keyboard.up}.
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*
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* Modifier keys DO influence {@link Keyboard.down}.
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* Holding down `Shift` will type the text in upper case.
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*
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* @param key - Name of key to press, such as `ArrowLeft`.
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* See {@link KeyInput} for a list of all key names.
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*
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* @param options - An object of options. Accepts text which, if specified,
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* generates an input event with this text.
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*/
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async down(
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key: KeyInput,
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options: { text?: string } = { text: undefined }
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): Promise<void> {
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const description = this._keyDescriptionForString(key);
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const autoRepeat = 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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const text = options.text === undefined ? description.text : options.text;
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await this._client.send('Input.dispatchKeyEvent', {
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type: text ? 'keyDown' : 'rawKeyDown',
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modifiers: this._modifiers,
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windowsVirtualKeyCode: description.keyCode,
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code: description.code,
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key: description.key,
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text: text,
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unmodifiedText: text,
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autoRepeat,
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location: description.location,
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isKeypad: description.location === 3,
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});
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}
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private _modifierBit(key: string): number {
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if (key === 'Alt') return 1;
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if (key === 'Control') return 2;
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if (key === 'Meta') return 4;
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if (key === 'Shift') return 8;
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return 0;
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}
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private _keyDescriptionForString(keyString: KeyInput): KeyDescription {
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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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assert(definition, `Unknown key: "${keyString}"`);
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if (definition.key) description.key = definition.key;
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if (shift && definition.shiftKey) description.key = definition.shiftKey;
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if (definition.keyCode) 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) description.code = definition.code;
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if (definition.location) description.location = definition.location;
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if (description.key.length === 1) description.text = description.key;
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if (definition.text) description.text = definition.text;
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if (shift && definition.shiftText) 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) description.text = '';
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return description;
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}
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/**
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* Dispatches a `keyup` event.
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*
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* @param key - Name of key to release, such as `ArrowLeft`.
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* See {@link KeyInput | KeyInput}
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* for a list of all key names.
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*/
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async up(key: KeyInput): Promise<void> {
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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('Input.dispatchKeyEvent', {
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type: 'keyUp',
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modifiers: this._modifiers,
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key: description.key,
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windowsVirtualKeyCode: description.keyCode,
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code: description.code,
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location: description.location,
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});
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}
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/**
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* Dispatches a `keypress` and `input` event.
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* This does not send a `keydown` or `keyup` event.
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*
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* @remarks
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* Modifier keys DO NOT effect {@link Keyboard.sendCharacter | Keyboard.sendCharacter}.
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* Holding down `Shift` will not type the text in upper case.
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*
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* @example
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* ```js
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* page.keyboard.sendCharacter('嗨');
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* ```
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*
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* @param char - Character to send into the page.
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*/
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async sendCharacter(char: string): Promise<void> {
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await this._client.send('Input.insertText', { text: char });
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}
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private charIsKey(char: string): char is KeyInput {
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return !!keyDefinitions[char];
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}
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/**
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* Sends a `keydown`, `keypress`/`input`,
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* and `keyup` event for each character in the text.
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*
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* @remarks
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* To press a special key, like `Control` or `ArrowDown`,
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* use {@link Keyboard.press}.
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*
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* Modifier keys DO NOT effect `keyboard.type`.
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* Holding down `Shift` will not type the text in upper case.
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*
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* @example
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* ```js
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* await page.keyboard.type('Hello'); // Types instantly
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* await page.keyboard.type('World', {delay: 100}); // Types slower, like a user
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* ```
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*
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* @param text - A text to type into a focused element.
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* @param options - An object of options. Accepts delay which,
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* if specified, is the time to wait between `keydown` and `keyup` in milliseconds.
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* Defaults to 0.
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*/
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async type(text: string, options: { delay?: number } = {}): Promise<void> {
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const delay = options.delay || null;
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for (const char of text) {
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if (this.charIsKey(char)) {
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await this.press(char, { delay });
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} else {
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if (delay) await new Promise((f) => setTimeout(f, delay));
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await this.sendCharacter(char);
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}
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}
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}
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/**
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* Shortcut for {@link Keyboard.down}
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* and {@link Keyboard.up}.
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*
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* @remarks
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* If `key` is a single character and no modifier keys besides `Shift`
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* are being held down, a `keypress`/`input` event will also generated.
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* The `text` option can be specified to force an input event to be generated.
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*
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* Modifier keys DO effect {@link Keyboard.press}.
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* Holding down `Shift` will type the text in upper case.
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*
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* @param key - Name of key to press, such as `ArrowLeft`.
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* See {@link KeyInput} for a list of all key names.
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*
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* @param options - An object of options. Accepts text which, if specified,
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* generates an input event with this text. Accepts delay which,
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* if specified, is the time to wait between `keydown` and `keyup` in milliseconds.
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* Defaults to 0.
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*/
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async press(
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key: KeyInput,
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options: { delay?: number; text?: string } = {}
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): Promise<void> {
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const { delay = null } = options;
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await this.down(key, options);
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if (delay) 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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/**
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* @public
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*/
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export type MouseButton = 'left' | 'right' | 'middle';
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/**
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* @public
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*/
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export interface MouseOptions {
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button?: MouseButton;
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clickCount?: number;
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}
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/**
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* @public
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*/
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export interface MouseWheelOptions {
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deltaX?: number;
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deltaY?: number;
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}
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/**
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* The Mouse class operates in main-frame CSS pixels
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* relative to the top-left corner of the viewport.
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* @remarks
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* Every `page` object has its own Mouse, accessible with [`page.mouse`](#pagemouse).
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*
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* @example
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* ```js
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* // Using ‘page.mouse’ to trace a 100x100 square.
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* await page.mouse.move(0, 0);
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* await page.mouse.down();
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* await page.mouse.move(0, 100);
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* await page.mouse.move(100, 100);
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* await page.mouse.move(100, 0);
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* await page.mouse.move(0, 0);
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* await page.mouse.up();
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* ```
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*
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* **Note**: The mouse events trigger synthetic `MouseEvent`s.
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* This means that it does not fully replicate the functionality of what a normal user
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* would be able to do with their mouse.
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*
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* For example, dragging and selecting text is not possible using `page.mouse`.
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* Instead, you can use the {@link https://developer.mozilla.org/en-US/docs/Web/API/DocumentOrShadowRoot/getSelection | `DocumentOrShadowRoot.getSelection()`} functionality implemented in the platform.
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*
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* @example
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* For example, if you want to select all content between nodes:
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* ```js
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* await page.evaluate((from, to) => {
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* const selection = from.getRootNode().getSelection();
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* const range = document.createRange();
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* range.setStartBefore(from);
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* range.setEndAfter(to);
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* selection.removeAllRanges();
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* selection.addRange(range);
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* }, fromJSHandle, toJSHandle);
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* ```
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* If you then would want to copy-paste your selection, you can use the clipboard api:
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* ```js
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* // The clipboard api does not allow you to copy, unless the tab is focused.
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* await page.bringToFront();
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* await page.evaluate(() => {
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* // Copy the selected content to the clipboard
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* document.execCommand('copy');
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* // Obtain the content of the clipboard as a string
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* return navigator.clipboard.readText();
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* });
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* ```
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* **Note**: If you want access to the clipboard API,
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* you have to give it permission to do so:
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* ```js
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* await browser.defaultBrowserContext().overridePermissions(
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* '<your origin>', ['clipboard-read', 'clipboard-write']
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* );
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* ```
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* @public
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*/
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export class Mouse {
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private _client: CDPSession;
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private _keyboard: Keyboard;
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private _x = 0;
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private _y = 0;
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private _button: MouseButton | 'none' = 'none';
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/**
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* @internal
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*/
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constructor(client: CDPSession, keyboard: Keyboard) {
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this._client = client;
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this._keyboard = keyboard;
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}
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/**
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* Dispatches a `mousemove` event.
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* @param x - Horizontal position of the mouse.
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* @param y - Vertical position of the mouse.
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* @param options - Optional object. If specified, the `steps` property
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* sends intermediate `mousemove` events when set to `1` (default).
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*/
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async move(
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x: number,
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y: number,
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options: { steps?: number } = {}
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): Promise<void> {
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const { steps = 1 } = options;
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const fromX = this._x,
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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('Input.dispatchMouseEvent', {
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type: 'mouseMoved',
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button: this._button,
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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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});
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}
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}
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/**
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* Shortcut for `mouse.move`, `mouse.down` and `mouse.up`.
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* @param x - Horizontal position of the mouse.
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* @param y - Vertical position of the mouse.
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* @param options - Optional `MouseOptions`.
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*/
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async click(
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x: number,
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y: number,
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options: MouseOptions & { delay?: number } = {}
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): Promise<void> {
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const { delay = null } = options;
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if (delay !== null) {
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await Promise.all([this.move(x, y), this.down(options)]);
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await new Promise((f) => setTimeout(f, delay));
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await this.up(options);
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} else {
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await Promise.all([
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this.move(x, y),
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this.down(options),
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this.up(options),
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]);
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}
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}
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/**
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* Dispatches a `mousedown` event.
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* @param options - Optional `MouseOptions`.
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*/
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async down(options: MouseOptions = {}): Promise<void> {
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const { button = 'left', clickCount = 1 } = options;
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this._button = button;
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await this._client.send('Input.dispatchMouseEvent', {
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type: 'mousePressed',
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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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});
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}
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/**
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* Dispatches a `mouseup` event.
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* @param options - Optional `MouseOptions`.
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*/
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async up(options: MouseOptions = {}): Promise<void> {
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const { button = 'left', clickCount = 1 } = options;
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this._button = 'none';
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await this._client.send('Input.dispatchMouseEvent', {
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type: 'mouseReleased',
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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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});
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}
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/**
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* Dispatches a `mousewheel` event.
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* @param options - Optional: `MouseWheelOptions`.
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*
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* @example
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* An example of zooming into an element:
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* ```js
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* await page.goto('https://mdn.mozillademos.org/en-US/docs/Web/API/Element/wheel_event$samples/Scaling_an_element_via_the_wheel?revision=1587366');
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*
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* const elem = await page.$('div');
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* const boundingBox = await elem.boundingBox();
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* await page.mouse.move(
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* boundingBox.x + boundingBox.width / 2,
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* boundingBox.y + boundingBox.height / 2
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* );
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*
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* await page.mouse.wheel({ deltaY: -100 })
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* ```
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*/
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async wheel(options: MouseWheelOptions = {}): Promise<void> {
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const { deltaX = 0, deltaY = 0 } = options;
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await this._client.send('Input.dispatchMouseEvent', {
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type: 'mouseWheel',
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x: this._x,
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y: this._y,
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deltaX,
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deltaY,
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modifiers: this._keyboard._modifiers,
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pointerType: 'mouse',
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});
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}
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}
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/**
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* The Touchscreen class exposes touchscreen events.
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* @public
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*/
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export class Touchscreen {
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private _client: CDPSession;
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private _keyboard: Keyboard;
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/**
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* @internal
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*/
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constructor(client: CDPSession, keyboard: Keyboard) {
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this._client = client;
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this._keyboard = keyboard;
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}
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/**
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* Dispatches a `touchstart` and `touchend` event.
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* @param x - Horizontal position of the tap.
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* @param y - Vertical position of the tap.
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*/
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async tap(x: number, y: number): Promise<void> {
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// Touches appear to be lost during the first frame after navigation.
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// This waits a frame before sending the tap.
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// @see https://crbug.com/613219
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await this._client.send('Runtime.evaluate', {
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expression:
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'new Promise(x => requestAnimationFrame(() => requestAnimationFrame(x)))',
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awaitPromise: true,
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});
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|
||
const touchPoints = [{ x: Math.round(x), y: Math.round(y) }];
|
||
await this._client.send('Input.dispatchTouchEvent', {
|
||
type: 'touchStart',
|
||
touchPoints,
|
||
modifiers: this._keyboard._modifiers,
|
||
});
|
||
await this._client.send('Input.dispatchTouchEvent', {
|
||
type: 'touchEnd',
|
||
touchPoints: [],
|
||
modifiers: this._keyboard._modifiers,
|
||
});
|
||
}
|
||
}
|