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/**
* Copyright 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
'use strict';
var SyntheticUIEvent = require('./SyntheticUIEvent');
var getEventCharCode = require('./getEventCharCode');
var getEventKey = require('./getEventKey');
var getEventModifierState = require('./getEventModifierState');
/**
* @interface KeyboardEvent
* @see http://www.w3.org/TR/DOM-Level-3-Events/
*/
var KeyboardEventInterface = {
key: getEventKey,
location: null,
ctrlKey: null,
shiftKey: null,
altKey: null,
metaKey: null,
repeat: null,
locale: null,
getModifierState: getEventModifierState,
// Legacy Interface
charCode: function (event) {
// `charCode` is the result of a KeyPress event and represents the value of
// the actual printable character.
// KeyPress is deprecated, but its replacement is not yet final and not
// implemented in any major browser. Only KeyPress has charCode.
if (event.type === 'keypress') {
return getEventCharCode(event);
}
return 0;
},
keyCode: function (event) {
// `keyCode` is the result of a KeyDown/Up event and represents the value of
// physical keyboard key.
// The actual meaning of the value depends on the users' keyboard layout
// which cannot be detected. Assuming that it is a US keyboard layout
// provides a surprisingly accurate mapping for US and European users.
// Due to this, it is left to the user to implement at this time.
if (event.type === 'keydown' || event.type === 'keyup') {
return event.keyCode;
}
return 0;
},
which: function (event) {
// `which` is an alias for either `keyCode` or `charCode` depending on the
// type of the event.
if (event.type === 'keypress') {
return getEventCharCode(event);
}
if (event.type === 'keydown' || event.type === 'keyup') {
return event.keyCode;
}
return 0;
}
};
/**
* @param {object} dispatchConfig Configuration used to dispatch this event.
* @param {string} dispatchMarker Marker identifying the event target.
* @param {object} nativeEvent Native browser event.
* @extends {SyntheticUIEvent}
*/
function SyntheticKeyboardEvent(dispatchConfig, dispatchMarker, nativeEvent, nativeEventTarget) {
return SyntheticUIEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent, nativeEventTarget);
}
SyntheticUIEvent.augmentClass(SyntheticKeyboardEvent, KeyboardEventInterface);
module.exports = SyntheticKeyboardEvent;
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