| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| (function() { |
| |
| // Flag values for ctrl, alt and shift as defined by EventFlags |
| // in "event_constants.h". |
| // @enum {number} |
| var Modifier = { |
| NONE: 0, |
| ALT: 8, |
| CONTROL: 4, |
| SHIFT: 2 |
| } |
| |
| // Each virtual key event is assigned a unique ID. |
| var nextRequestID = 0; |
| |
| // Keycodes have been deprecated in the KeyEvent specification, but are |
| // nonetheless required to support legacy web content. The Keycodes in the |
| // following table are based on subset of US-EN 101-key keyboard. These |
| // codes are used in the absence of explicit keycodes for kb-key and |
| // kb-keysequence elements. Keyboard layout authors may explicitly set the |
| // keyCode attribute for kb-key or kb-keysequence elements to refer to |
| // indices in this table in order to emulate a physical keyboard with an |
| // alternate layout. Not all keys on a virtual keyboard are required to |
| // have keyCodes. The shiftModifier specifies whether to always include or |
| // exclude the shift modifer when sending key events for this key. If it's |
| // undefined, it will defer to state of the keyboard. |
| // TODO(rsadam): Correctly propagate shutdown keycode. This is currently |
| // ignored due to chromoting (crbug/146609) |
| var keyCodes = { |
| '\b': {keyCode: 0x08, keyName: 'Backspace', shiftModifier: false}, |
| '\t': {keyCode: 0x09, keyName: 'Tab', shiftModifier: false}, |
| '\n': {keyCode: 0x0D, keyName: 'Enter', shiftModifier: false}, |
| 'Esc': {keyCode: 0x1B, keyName: 'Escape', shiftModifier: false}, |
| ' ': {keyCode: 0x20, keyName: 'Space', shiftModifier: false}, |
| 'Arrow-Left': {keyCode: 0x25, keyName: 'ArrowLeft', |
| shiftModifier: undefined}, |
| 'Arrow-Up': {keyCode: 0x26, keyName: 'ArrowUp', shiftModifier: undefined}, |
| 'Arrow-Right': {keyCode: 0x27, keyName: 'ArrowRight', |
| shiftModifier: undefined}, |
| 'Arrow-Down': {keyCode: 0x28, keyName: 'ArrowDown', |
| shiftModifier: undefined}, |
| '0': {keyCode: 0x30, keyName: 'Digit0', shiftModifier: false}, |
| ')': {keyCode: 0x30, keyName: 'Digit0', shiftModifier: true}, |
| '1': {keyCode: 0x31, keyName: 'Digit1', shiftModifier: false}, |
| '!': {keyCode: 0x31, keyName: 'Digit1', shiftModifier: true}, |
| '2': {keyCode: 0x32, keyName: 'Digit2', shiftModifier: false}, |
| '@': {keyCode: 0x32, keyName: 'Digit2', shiftModifier: true}, |
| '3': {keyCode: 0x33, keyName: 'Digit3', shiftModifier: false}, |
| '#': {keyCode: 0x33, keyName: 'Digit3', shiftModifier: true}, |
| '4': {keyCode: 0x34, keyName: 'Digit4', shiftModifier: false}, |
| '$': {keyCode: 0x34, keyName: 'Digit4', shiftModifier: true}, |
| '5': {keyCode: 0x35, keyName: 'Digit5', shiftModifier: false}, |
| '%': {keyCode: 0x35, keyName: 'Digit5', shiftModifier: true}, |
| '6': {keyCode: 0x36, keyName: 'Digit6', shiftModifier: false}, |
| '^': {keyCode: 0x36, keyName: 'Digit6', shiftModifier: true}, |
| '7': {keyCode: 0x37, keyName: 'Digit7', shiftModifier: false}, |
| '&': {keyCode: 0x37, keyName: 'Digit7', shiftModifier: true}, |
| '8': {keyCode: 0x38, keyName: 'Digit8', shiftModifier: false}, |
| '*': {keyCode: 0x38, keyName: 'Digit8', shiftModifier: true}, |
| '9': {keyCode: 0x39, keyName: 'Digit9', shiftModifier: false}, |
| '(': {keyCode: 0x39, keyName: 'Digit9', shiftModifier: true}, |
| 'a': {keyCode: 0x41, keyName: 'KeyA', shiftModifier: false}, |
| 'A': {keyCode: 0x41, keyName: 'KeyA', shiftModifier: true}, |
| 'b': {keyCode: 0x42, keyName: 'KeyB', shiftModifier: false}, |
| 'B': {keyCode: 0x42, keyName: 'KeyB', shiftModifier: true}, |
| 'c': {keyCode: 0x43, keyName: 'KeyC', shiftModifier: false}, |
| 'C': {keyCode: 0x43, keyName: 'KeyC', shiftModifier: true}, |
| 'd': {keyCode: 0x44, keyName: 'KeyD', shiftModifier: false}, |
| 'D': {keyCode: 0x44, keyName: 'KeyD', shiftModifier: true}, |
| 'e': {keyCode: 0x45, keyName: 'KeyE', shiftModifier: false}, |
| 'E': {keyCode: 0x45, keyName: 'KeyE', shiftModifier: true}, |
| 'f': {keyCode: 0x46, keyName: 'KeyF', shiftModifier: false}, |
| 'F': {keyCode: 0x46, keyName: 'KeyF', shiftModifier: true}, |
| 'g': {keyCode: 0x47, keyName: 'KeyG', shiftModifier: false}, |
| 'G': {keyCode: 0x47, keyName: 'KeyG', shiftModifier: true}, |
| 'h': {keyCode: 0x48, keyName: 'KeyH', shiftModifier: false}, |
| 'H': {keyCode: 0x48, keyName: 'KeyH', shiftModifier: true}, |
| 'i': {keyCode: 0x49, keyName: 'KeyI', shiftModifier: false}, |
| 'I': {keyCode: 0x49, keyName: 'KeyI', shiftModifier: true}, |
| 'j': {keyCode: 0x4A, keyName: 'KeyJ', shiftModifier: false}, |
| 'J': {keyCode: 0x4A, keyName: 'KeyJ', shiftModifier: true}, |
| 'k': {keyCode: 0x4B, keyName: 'KeyK', shiftModifier: false}, |
| 'K': {keyCode: 0x4B, keyName: 'KeyK', shiftModifier: true}, |
| 'l': {keyCode: 0x4C, keyName: 'KeyL', shiftModifier: false}, |
| 'L': {keyCode: 0x4C, keyName: 'KeyL', shiftModifier: true}, |
| 'm': {keyCode: 0x4D, keyName: 'KeyM', shiftModifier: false}, |
| 'M': {keyCode: 0x4D, keyName: 'KeyM', shiftModifier: true}, |
| 'n': {keyCode: 0x4E, keyName: 'KeyN', shiftModifier: false}, |
| 'N': {keyCode: 0x4E, keyName: 'KeyN', shiftModifier: true}, |
| 'o': {keyCode: 0x4F, keyName: 'KeyO', shiftModifier: false}, |
| 'O': {keyCode: 0x4F, keyName: 'KeyO', shiftModifier: true}, |
| 'p': {keyCode: 0x50, keyName: 'KeyP', shiftModifier: false}, |
| 'P': {keyCode: 0x50, keyName: 'KeyP', shiftModifier: true}, |
| 'q': {keyCode: 0x51, keyName: 'KeyQ', shiftModifier: false}, |
| 'Q': {keyCode: 0x51, keyName: 'KeyQ', shiftModifier: true}, |
| 'r': {keyCode: 0x52, keyName: 'KeyR', shiftModifier: false}, |
| 'R': {keyCode: 0x52, keyName: 'KeyR', shiftModifier: true}, |
| 's': {keyCode: 0x53, keyName: 'KeyS', shiftModifier: false}, |
| 'S': {keyCode: 0x53, keyName: 'KeyS', shiftModifier: true}, |
| 't': {keyCode: 0x54, keyName: 'KeyT', shiftModifier: false}, |
| 'T': {keyCode: 0x54, keyName: 'KeyT', shiftModifier: true}, |
| 'u': {keyCode: 0x55, keyName: 'KeyU', shiftModifier: false}, |
| 'U': {keyCode: 0x55, keyName: 'KeyU', shiftModifier: true}, |
| 'v': {keyCode: 0x56, keyName: 'KeyV', shiftModifier: false}, |
| 'V': {keyCode: 0x56, keyName: 'KeyV', shiftModifier: true}, |
| 'w': {keyCode: 0x57, keyName: 'KeyW', shiftModifier: false}, |
| 'W': {keyCode: 0x57, keyName: 'KeyW', shiftModifier: true}, |
| 'x': {keyCode: 0x58, keyName: 'KeyX', shiftModifier: false}, |
| 'X': {keyCode: 0x58, keyName: 'KeyX', shiftModifier: true}, |
| 'y': {keyCode: 0x59, keyName: 'KeyY', shiftModifier: false}, |
| 'Y': {keyCode: 0x59, keyName: 'KeyY', shiftModifier: true}, |
| 'z': {keyCode: 0x5A, keyName: 'KeyZ', shiftModifier: false}, |
| 'Z': {keyCode: 0x5A, keyName: 'KeyZ', shiftModifier: true}, |
| 'Fullscreen': {keyCode: 0x7A, shiftModifier: false}, |
| 'Shutdown': {keyCode: 0x98, shiftModifier: false}, |
| 'Back': {keyCode: 0xA6, shiftModifier: false}, |
| 'Forward': {keyCode: 0xA7, shiftModifier: false}, |
| 'Reload': {keyCode: 0xA8, shiftModifier: false}, |
| 'Search': {keyCode: 0xAA, shiftModifier: false}, |
| 'Mute': {keyCode: 0xAD, keyName: 'VolumeMute', shiftModifier: false}, |
| 'Volume-Down': {keyCode: 0xAE, keyName: 'VolumeDown', |
| shiftModifier: false}, |
| 'Volume-Up': {keyCode: 0xAF, keyName: 'VolumeUp', shiftModifier: false}, |
| 'Change-Window': {keyCode: 0xB6, shiftModifier: false}, |
| ';': {keyCode: 0xBA, keyName: 'Semicolon', shiftModifier: false}, |
| ':': {keyCode: 0xBA, keyName: 'Semicolon',shiftModifier: true}, |
| '=': {keyCode: 0xBB, keyName: 'Equal', shiftModifier: false}, |
| '+': {keyCode: 0xBB, keyName: 'Equal', shiftModifier: true}, |
| ',': {keyCode: 0xBC, keyName: 'Comma', shiftModifier: false}, |
| '<': {keyCode: 0xBC, keyName: 'Comma', shiftModifier: true}, |
| '-': {keyCode: 0xBD, keyName: 'Minus', shiftModifier: false}, |
| '_': {keyCode: 0xBD, keyName: 'Minus', shiftModifier: true}, |
| '.': {keyCode: 0xBE, keyName: 'Period', shiftModifier: false}, |
| '>': {keyCode: 0xBE, keyName: 'Period', shiftModifier: true}, |
| '/': {keyCode: 0xBF, keyName: 'Slash', shiftModifier: false}, |
| '?': {keyCode: 0xBF, keyName: 'Slash', shiftModifier: true}, |
| '`': {keyCode: 0xC0, keyName: 'Backquote', shiftModifier: false}, |
| '~': {keyCode: 0xC0, keyName: 'Backquote', shiftModifier: true}, |
| 'Brightness-Down': {keyCode: 0xD8, keyName: 'BrightnessDown', |
| shiftModifier: false}, |
| 'Brightness-Up': {keyCode: 0xD9, keyName: 'BrightnessUp', |
| shiftModifier: false}, |
| '[': {keyCode: 0xDB, keyName: 'BracketLeft', shiftModifier: false}, |
| '{': {keyCode: 0xDB, keyName: 'BracketLeft', shiftModifier: true}, |
| '\\': {keyCode: 0xDC, keyName: 'Backslash', shiftModifier: false}, |
| '|': {keyCode: 0xDC, keyName: 'Backslash', shiftModifier: true}, |
| ']': {keyCode: 0xDD, keyName: 'BracketRight', shiftModifier: false}, |
| '}': {keyCode: 0xDD, keyName: 'BracketRight', shiftModifier: true}, |
| '\'': {keyCode: 0xDE, keyName: 'Quote', shiftModifier: false}, |
| '"': {keyCode: 0xDE, keyName: 'Quote', shiftModifier: true}, |
| }; |
| |
| Polymer('kb-key-codes', { |
| /** |
| * Retrieves the keyCode and status of the shift modifier. |
| * @param {string} id ID of an entry in the code table. |
| * @return {keyCode: numeric, shiftModifier: boolean} |
| */ |
| GetKeyCodeAndModifiers: function(id) { |
| var entry = keyCodes[id]; |
| if (entry) { |
| return { |
| keyCode: entry.keyCode, |
| keyName: entry.keyName || 'Unidentified', |
| shiftModifier: entry.shiftModifier |
| }; |
| } |
| if (id.length != 1) |
| return; |
| // Special case of accented characters. |
| return { |
| keyCode: 0, |
| keyName: 'Unidentified', |
| shiftModifier: false |
| }; |
| }, |
| |
| /** |
| * Creates a virtual key event for use with the keyboard extension API. |
| * See http://www.w3.org/TR/DOM-Level-3-Events/#events-KeyboardEvent. |
| * @param {Object} detail Attribute of the key being pressed or released. |
| * @param {string} type The type of key event, which may be keydown |
| * or keyup. |
| * @return {?KeyboardEvent} A KeyboardEvent object, or undefined on |
| * failure. |
| */ |
| createVirtualKeyEvent: function(detail, type) { |
| var char = detail.char; |
| var keyCode = detail.keyCode; |
| var keyName = detail.keyName; |
| // The shift modifier is handled specially. Some charactares like '+' |
| // {keyCode: 0xBB, shiftModifier: true}, are available on non-upper |
| // keysets, and so we rely on caching the correct shiftModifier. If |
| // the cached value of the shiftModifier is undefined, we defer to |
| // the shiftModifier in the detail. |
| var shiftModifier = detail.shiftModifier; |
| if (keyCode == undefined || keyName == undefined) { |
| var state = this.GetKeyCodeAndModifiers(char); |
| if (state) { |
| keyCode = keyCode || state.keyCode; |
| keyName = keyName || state.keyName; |
| shiftModifier = (state.shiftModifier == undefined) ? |
| shiftModifier : state.shiftModifier; |
| } else { |
| // Keycode not defined. |
| return; |
| } |
| } |
| var modifiers = Modifier.NONE; |
| modifiers = shiftModifier ? modifiers | Modifier.SHIFT : modifiers; |
| modifiers = detail.controlModifier ? |
| modifiers | Modifier.CONTROL : modifiers; |
| modifiers = detail.altModifier ? modifiers | Modifier.ALT : modifiers; |
| return { |
| type: type, |
| charValue: char.charCodeAt(0), |
| keyCode: keyCode, |
| keyName: keyName, |
| modifiers: modifiers |
| }; |
| }, |
| }); |
| })(); |
