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(function ($) {
$.fn.keyboard = function () {
$k.bind(this, arguments);
return this;
}
$.keyboard = function () {
$k.bind($(document), arguments);
return this;
}
var $k = {
setup : {
'strict' : true,
'event' : 'keydown',
'preventDefault' : false
},
keys : {
cont : [],
getCodes : function () {
var codes = [];
for (var i = 0; i < $k.keys.cont.length; i++) {
codes.push($k.keys.cont[i].keyCode);
}
return codes;
},
add : function (e) {
if (e.keyCode == 0) {
// throw 'ZeroKeyCodeException';
} else {
$k.keys.rm(e);
$k.keys.cont.push(e);
$k.keys.dump();
}
},
rm : function (e) {
for (var i = 0; i < $k.keys.cont.length; i++) {
if ($k.keys.cont[i].keyCode == e.keyCode) {
$k.keys.cont.splice(i, 1);
return;
}
}
},
clear : function () {
$k.keys.cont = [];
},
dump : function () {
// console.log($k.keys.getCodes().join('; '));
}
},
keyCodes : {
// Alphabet
a:65, b:66, c:67, d:68, e:69,
f:70, g:71, h:72, i:73, j:74,
k:75, l:76, m:77, n:78, o:79,
p:80, q:81, r:82, s:83, t:84,
u:85, v:86, w:87, x:88, y:89, z:90,
// Numbers
n0:48, n1:49, n2:50, n3:51, n4:52,
n5:53, n6:54, n7:55, n8:56, n9:57,
// Controls
tab: 9, enter:13, shift:16, backspace:8,
ctrl:17, alt :18, esc :27, space :32,
menu:93, pause:19, cmd :91,
insert :45, home:36, pageup :33,
'delete':46, end :35, pagedown:34,
// F*
f1:112, f2:113, f3:114, f4 :115, f5 :116, f6 :117,
f7:118, f8:119, f9:120, f10:121, f11:122, f12:123,
// numpad
np0: 96, np1: 97, np2: 98, np3: 99, np4:100,
np5:101, np6:102, np7:103, np8:104, np9:105,
npslash:11,npstar:106,nphyphen:109,npplus:107,npdot:110,
// Lock
capslock:20, numlock:144, scrolllock:145,
// Symbols
equals: 61, hyphen :109, coma :188, dot:190,
gravis:192, backslash:220, sbopen:219, sbclose:221,
slash :191, semicolon: 59, apostrophe : 222,
// Arrows
aleft:37, aup: 38, aright:39, adown:40
},
parseArgs : function (args) {
if (typeof args[0] == 'object') {
return {
setup : args[0]
};
} else {
var secondIsFunc = (typeof args[1] == 'function');
var isDelete = !secondIsFunc && (typeof args[2] != 'function');
var argsObj = {};
argsObj.keys = args[0];
if ($.isArray(argsObj.keys)) {
argsObj.keys = argsObj.keys.join(' ');
}
if (isDelete) {
argsObj.isDelete = true;
} else {
argsObj.func = secondIsFunc ? args[1] : args[2];
argsObj.cfg = secondIsFunc ? args[2] : args[1];
if (typeof argsObj.cfg != 'object') {
argsObj.cfg = {};
}
argsObj.cfg = $.extend(clone($k.setup), argsObj.cfg);
}
return argsObj;
}
},
getIndex : function (keyCodes, order) {
return (order == 'strict') ?
's.' + keyCodes.join('.') :
'f.' + clone(keyCodes).sort().join('.');
},
getIndexCode : function (index) {
if ($k.keyCodes[index]) {
return $k.keyCodes[index];
} else {
throw 'No such index: «' + index + '»';
}
},
getRange : function (title) {
var c = $k.keyCodes;
var f = arguments.callee;
switch (title) {
case 'letters' : return range (c['a'] , c['z']);
case 'numbers' : return range (c['n0'] , c['n9']);
case 'numpad' : return range (c['np0'], c['np9']);
case 'fkeys' : return range (c['f1'] , c['f12']);
case 'arrows' : return range (c['aleft'], c['adown']);
case 'symbols' : return [
c.equals, c.hyphen, c.coma, c.dot, c.gravis, c.backslash,
c.sbopen, c.sbclose, c.slash, c.semicolon, c.apostrophe,
c.npslash, c.npstar, c.nphyphen,c.npplus,c.npdot
];
case 'allnum' : return f('numbers').concat(f('numpad'));
case 'printable': return f('letters').concat(
f('allnum') .concat(
f('symbols')))
default : throw 'No such range: «' + title + '»';
}
},
stringGetCodes : function (str) {
var parts;
str = str.toLowerCase();
if (str.match(/^\[[\w\d\s\|\)\(\-]*\]$/i)) { // [ space | (letters) | (n4-n7) ]
var codes = [];
parts = str
.substring(1, str.length-1)
.replace(/\s/, '')
.split('|');
for (var i = 0; i < parts.length; i++) {
var p = $k.stringGetCodes(parts[i])
codes = codes.concat(p);
}
return codes;
} else if (str.match(/^\([\w\d\s\-]*\)$/i)) { // (n4-n7)
parts = str
.substring(1, str.length-1)
.replace(/\s/, '')
.split('-');
if(parts.length == 2) {
return range(
$k.getIndexCode(parts[0]),
$k.getIndexCode(parts[1])
);
} else {
return $k.getRange(parts[0]);
}
} else {
return [$k.getIndexCode(str)];
}
},
getCodes : function (keys) {
// ['shift', 'ctrl'] => [16, 17]
var keycodes = [];
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (!isNaN(key)) { // is_numeric
key = [1 * key];
} else if (typeof key == 'string') {
key = $k.stringGetCodes(key);
} else {
throw 'Wrong key type: «' + (typeof key) + '»';
}
keycodes.push(key);
}
return keycodes;
},
parseKeysString : function (str) {
var parts = str.split(',');
for (var i = 0; i < parts.length; i++) {
var string = $.trim(parts[i]);
parts[i] = {};
parts[i].order = string.indexOf('+') >= 0 ? 'strict' : 'float';
parts[i].codes = $k.getCodes(
string.split(parts[i].order == 'strict' ? '+' : ' ')
);
parts[i].index = $k.getIndex(parts[i].codes, parts[i].order);
parts[i].group = i;
}
return parts;
},
match : function (bind) {
var k, i, matched, cur = undefined;
var cont = $k.keys.getCodes();
var codes = clone(bind.keys.codes);
var eventIndexes = [];
if (codes.length == 0) {
return false;
}
if (bind.keys.order == 'strict') {
for (i = 0; i < cont.length; i++) {
if (!codes.length) {
break;
}
if (cur === undefined) {
cur = codes.shift();
}
if (inArray(cont[i], cur)) {
cur = undefined;
eventIndexes.push(i);
} else if (bind.cfg.strict) {
return false;
}
}
return (codes.length === 0 && cur === undefined) ?
eventIndexes : false;
} else {
for (i = 0; i < codes.length; i++) {
matched = false;
for (k = 0; k < codes[i].length; k++) {
cur = $.inArray(codes[i][k], cont);
if (cur >= 0) {
eventIndexes.push(cur);
matched = true;
break;
}
}
if (!matched) {
return false;
}
}
if (bind.cfg.strict) {
for (i = 0; i < cont.length; i++) {
matched = false;
for (k in codes) {
if (inArray(cont[i], codes[k])) {
matched = true;
break;
}
}
if (!matched) {
return false;
}
}
}
return eventIndexes;
}
},
hasCurrent : function (bind, e) {
var last = bind.keys.codes.length - 1;
return (bind.keys.order == 'strict') ?
inArray (e.keyCode, bind.keys.codes[last]) :
inArrayR (e.keyCode, bind.keys.codes);
},
checkBinds : function ($obj, e) {
var ei, okb = $obj.keyboardBinds;
for (var i in okb) {
var bind = okb[i];
if (bind.cfg.event == e.originalEvent.type) {
ei = $k.match(bind);
if ( ei && $k.hasCurrent(bind, e) ) {
var backup = $obj.keyboardFunc;
var events = [];
for (var k in ei) {
events.push($k.keys.cont[ei[k]])
}
$obj.keyboardFunc = bind.func;
$obj.keyboardFunc(events, bind);
$obj.keyboardFunc = backup;
if (bind.cfg.preventDefault) {
e.preventDefault();
}
}
}
}
},
bind : function ($obj, args) {
args = $k.parseArgs(args);
if (args.setup) {
$k.setup = $.extend($k.setup, args.setup);
} else {
if (!$obj.keyboardBinds) {
$obj.keyboardBinds = {};
$obj
.keydown(function (e) {
$k.keys.add(e);
$k.checkBinds($obj, e);
})
.keyup(function (e) {
$k.checkBinds($obj, e);
});
}
// {keys, func, cfg}
var parts = $k.parseKeysString(args.keys);
for (var i = 0; i < parts.length; i++) {
if (args.keys.isDelete) {
$obj.keyboardBinds[parts[i].index] = undefined;
} else {
$obj.keyboardBinds[parts[i].index] = clone(args);
$obj.keyboardBinds[parts[i].index].keys = parts[i];
}
}
}
},
init : function () {
$(document)
.keydown ( $k.keys.add )
.keyup (function (e) {
setTimeout(function () {
$k.keys.rm(e)
}, 0);
})
.blur ( $k.keys.clear );
}
}
var inArrayR = function (value, array) {
for (var i = 0; i < array.length; i++) {
if (typeof array[i] == 'object' || $.isArray(array[i])) {
if (inArrayR(value, array[i])) {
return true;
}
} else if (value == array[i]) {
return true;
}
}
return false;
}
var inArray = function (value, array) {
return ($.inArray(value, array) != -1);
};
var range = function (from, to) {
var r = [];
do {
r.push(from);
} while (from++ < to)
return r;
};
var clone = function (obj) {
var newObj, i;
if ($.isArray(obj)) {
newObj = [];
for (i = 0; i < obj.length; i++) {
newObj[i] = (typeof obj[i] == 'object' || $.isArray(obj[i]))
? clone(obj[i]) : obj[i];
}
} else {
newObj = {};
for (i in obj) {
newObj[i] = (typeof obj[i] == 'object' || $.isArray(obj[i]))
? clone(obj[i]) : obj[i];
}
}
return newObj;
};
$k.init();
})(jQuery);