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https://gitlab.winehq.org/wine/wine-gecko.git
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41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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module.metadata = {
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"stability": "stable"
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};
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const INVALID_HOTKEY = "Hotkey must have at least one modifier.";
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const { toJSON: jsonify, toString: stringify,
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isFunctionKey } = require("./keyboard/utils");
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const { register, unregister } = require("./keyboard/hotkeys");
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const Hotkey = exports.Hotkey = function Hotkey(options) {
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if (!(this instanceof Hotkey))
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return new Hotkey(options);
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// Parsing key combination string.
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let hotkey = jsonify(options.combo);
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if (!isFunctionKey(hotkey.key) && !hotkey.modifiers.length) {
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throw new TypeError(INVALID_HOTKEY);
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}
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this.onPress = options.onPress && options.onPress.bind(this);
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this.toString = stringify.bind(null, hotkey);
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// Registering listener on keyboard combination enclosed by this hotkey.
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// Please note that `this.toString()` is a normalized version of
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// `options.combination` where order of modifiers is sorted and `accel` is
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// replaced with platform specific key.
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register(this.toString(), this.onPress);
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// We freeze instance before returning it in order to make it's properties
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// read-only.
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return Object.freeze(this);
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};
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Hotkey.prototype.destroy = function destroy() {
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unregister(this.toString(), this.onPress);
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};
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