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<!--
-- Copyright 2013 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.
-->
<polymer-element name="kb-key-codes">
<script>
(function() {
// 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.
var keyCodes = {
'\b': {keyCode: 0x08, shiftModifier: false},
'\t': {keyCode: 0x09, shiftModifier: false},
'\n': {keyCode: 0x0D, shiftModifier: false},
' ': {keyCode: 0x20, shiftModifier: false},
'0': {keyCode: 0x30, shiftModifier: false},
')': {keyCode: 0x30, shiftModifier: true},
'1': {keyCode: 0x31, shiftModifier: false},
'!': {keyCode: 0x31, shiftModifier: true},
'2': {keyCode: 0x32, shiftModifier: false},
'@': {keyCode: 0x32, shiftModifier: true},
'3': {keyCode: 0x33, shiftModifier: false},
'#': {keyCode: 0x33, shiftModifier: true},
'4': {keyCode: 0x34, shiftModifier: false},
'$': {keyCode: 0x34, shiftModifier: true},
'5': {keyCode: 0x35, shiftModifier: false},
'%': {keyCode: 0x35, shiftModifier: true},
'6': {keyCode: 0x36, shiftModifier: false},
'^': {keyCode: 0x36, shiftModifier: true},
'7': {keyCode: 0x37, shiftModifier: false},
'&': {keyCode: 0x37, shiftModifier: true},
'8': {keyCode: 0x38, shiftModifier: false},
'*': {keyCode: 0x38, shiftModifier: true},
'9': {keyCode: 0x39, shiftModifier: false},
'(': {keyCode: 0x39, shiftModifier: true},
'a': {keyCode: 0x41, shiftModifier: false},
'A': {keyCode: 0x41, shiftModifier: true},
'b': {keyCode: 0x42, shiftModifier: false},
'B': {keyCode: 0x42, shiftModifier: true},
'c': {keyCode: 0x43, shiftModifier: false},
'C': {keyCode: 0x43, shiftModifier: true},
'd': {keyCode: 0x44, shiftModifier: false},
'D': {keyCode: 0x44, shiftModifier: true},
'e': {keyCode: 0x45, shiftModifier: false},
'E': {keyCode: 0x45, shiftModifier: true},
'f': {keyCode: 0x46, shiftModifier: false},
'F': {keyCode: 0x46, shiftModifier: true},
'g': {keyCode: 0x47, shiftModifier: false},
'G': {keyCode: 0x47, shiftModifier: true},
'h': {keyCode: 0x48, shiftModifier: false},
'H': {keyCode: 0x48, shiftModifier: true},
'i': {keyCode: 0x49, shiftModifier: false},
'I': {keyCode: 0x49, shiftModifier: true},
'j': {keyCode: 0x4A, shiftModifier: false},
'J': {keyCode: 0x4A, shiftModifier: true},
'k': {keyCode: 0x4B, shiftModifier: false},
'K': {keyCode: 0x4B, shiftModifier: true},
'l': {keyCode: 0x4C, shiftModifier: false},
'L': {keyCode: 0x4C, shiftModifier: true},
'm': {keyCode: 0x4D, shiftModifier: false},
'M': {keyCode: 0x4D, shiftModifier: true},
'n': {keyCode: 0x4E, shiftModifier: false},
'N': {keyCode: 0x4E, shiftModifier: true},
'o': {keyCode: 0x4F, shiftModifier: false},
'O': {keyCode: 0x4F, shiftModifier: true},
'p': {keyCode: 0x50, shiftModifier: false},
'P': {keyCode: 0x50, shiftModifier: true},
'q': {keyCode: 0x51, shiftModifier: false},
'Q': {keyCode: 0x51, shiftModifier: true},
'r': {keyCode: 0x52, shiftModifier: false},
'R': {keyCode: 0x52, shiftModifier: true},
's': {keyCode: 0x53, shiftModifier: false},
'S': {keyCode: 0x53, shiftModifier: true},
't': {keyCode: 0x54, shiftModifier: false},
'T': {keyCode: 0x54, shiftModifier: true},
'u': {keyCode: 0x55, shiftModifier: false},
'U': {keyCode: 0x55, shiftModifier: true},
'v': {keyCode: 0x56, shiftModifier: false},
'V': {keyCode: 0x56, shiftModifier: true},
'w': {keyCode: 0x57, shiftModifier: false},
'W': {keyCode: 0x57, shiftModifier: true},
'x': {keyCode: 0x58, shiftModifier: false},
'X': {keyCode: 0x58, shiftModifier: true},
'y': {keyCode: 0x59, shiftModifier: false},
'Y': {keyCode: 0x59, shiftModifier: true},
'z': {keyCode: 0x5A, shiftModifier: false},
'Z': {keyCode: 0x5A, shiftModifier: true},
';': {keyCode: 0xBA, shiftModifier: false},
':': {keyCode: 0xBA, shiftModifier: true},
'=': {keyCode: 0xBB, shiftModifier: false},
'+': {keyCode: 0xBB, shiftModifier: true},
',': {keyCode: 0xBC, shiftModifier: false},
'<': {keyCode: 0xBC, shiftModifier: true},
'-': {keyCode: 0xBD, shiftModifier: false},
'_': {keyCode: 0xBD, shiftModifier: true},
'.': {keyCode: 0xBE, shiftModifier: false},
'>': {keyCode: 0xBE, shiftModifier: true},
'/': {keyCode: 0xBF, shiftModifier: false},
'?': {keyCode: 0xBF, shiftModifier: true},
'`': {keyCode: 0xC0, shiftModifier: false},
'~': {keyCode: 0xC0, shiftModifier: true},
'[': {keyCode: 0xDB, shiftModifier: false},
'{': {keyCode: 0xDB, shiftModifier: true},
'\\': {keyCode: 0xDC, shiftModifier: false},
'|': {keyCode: 0xDC, shiftModifier: true},
']': {keyCode: 0xDD, shiftModifier: false},
'}': {keyCode: 0xDD, shiftModifier: true},
'\'': {keyCode: 0xDE, shiftModifier: false},
'"': {keyCode: 0xDE, 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,
shiftModifier: entry.shiftModifier
};
}
return {
keyCode: 0,
shiftModifier: false
};
},
/**
* Creates a virtual key event for use with the keyboard extension API.
* @param {kb-key} key Instance of the kb-key element being pressed or
* released.
* @param {string} type The type of key event, which may be keydown
* or keyreleased.
* @return {keyCode: numeric,
* modifiers: Array.<string>,
* type: string,
* value: string}
*/
CreateVirtualKeyEvent: function(key, type) {
var keyCode = key.keyCode;
var shiftModifier = key.shiftModifier;
if (keyCode == undefined) {
var state = this.GetKeyCodeAndModifiers(key.charValue);
keyCode = state.keyCode;
shiftModifier = state.shiftModifier;
}
var modifiers = [];
if (shiftModifier)
modifiers.push('shiftKey');
return {
keyCode: keyCode,
modifiers: modifiers,
type: type,
value: key.charValue,
};
},
});
})();
</script>
</polymer-element>
|
