The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/hotkeys.js
addon-sdk/source/lib/sdk/hotkeys.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:60caa301019b |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 module.metadata = { | |
| 8 "stability": "stable" | |
| 9 }; | |
| 10 | |
| 11 const INVALID_HOTKEY = "Hotkey must have at least one modifier."; | |
| 12 | |
| 13 const { toJSON: jsonify, toString: stringify, | |
| 14 isFunctionKey } = require("./keyboard/utils"); | |
| 15 const { register, unregister } = require("./keyboard/hotkeys"); | |
| 16 | |
| 17 const Hotkey = exports.Hotkey = function Hotkey(options) { | |
| 18 if (!(this instanceof Hotkey)) | |
| 19 return new Hotkey(options); | |
| 20 | |
| 21 // Parsing key combination string. | |
| 22 let hotkey = jsonify(options.combo); | |
| 23 if (!isFunctionKey(hotkey.key) && !hotkey.modifiers.length) { | |
| 24 throw new TypeError(INVALID_HOTKEY); | |
| 25 } | |
| 26 | |
| 27 this.onPress = options.onPress && options.onPress.bind(this); | |
| 28 this.toString = stringify.bind(null, hotkey); | |
| 29 // Registering listener on keyboard combination enclosed by this hotkey. | |
| 30 // Please note that `this.toString()` is a normalized version of | |
| 31 // `options.combination` where order of modifiers is sorted and `accel` is | |
| 32 // replaced with platform specific key. | |
| 33 register(this.toString(), this.onPress); | |
| 34 // We freeze instance before returning it in order to make it's properties | |
| 35 // read-only. | |
| 36 return Object.freeze(this); | |
| 37 }; | |
| 38 Hotkey.prototype.destroy = function destroy() { | |
| 39 unregister(this.toString(), this.onPress); | |
| 40 }; |
