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/* | |
Copyright (c) 2011 Oscar Godson ( http://oscargodson.com ) and Sebastian Nitu ( http://sebnitu.com ) | |
Permission is hereby granted, free of charge, to any person obtaining a copy | |
of this software and associated documentation files (the "Software"), to deal | |
in the Software without restriction, including without limitation the rights | |
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
copies of the Software, and to permit persons to whom the Software is | |
furnished to do so, subject to the following conditions: | |
The above copyright notice and this permission notice shall be included in | |
all copies or substantial portions of the Software. | |
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
THE SOFTWARE. | |
More infomation on http://oscargodson.com/labs/jkey | |
or fork it at https://github.com/OscarGodson/jKey | |
Special thanks to Macy Abbey | |
*/ | |
(function($) { | |
$.fn.jkey = function(keyCombo,options,callback) { | |
//Check if the selected element was the window and make it document | |
//We do this because IE will fail if you select window since you can't attach | |
//keypresses to the window in IE | |
var $this = this; | |
if(!this[0].parentNode){ $this = document; } | |
// Save the key codes to JSON object | |
var keyCodes = { | |
/* start the a-z keys */ | |
'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, | |
/* start number keys */ | |
'0' : 48, | |
'1' : 49, | |
'2' : 50, | |
'3' : 51, | |
'4' : 52, | |
'5' : 53, | |
'6' : 54, | |
'7' : 55, | |
'8' : 56, | |
'9' : 57, | |
/* start the f keys */ | |
'f1' : 112, | |
'f2' : 113, | |
'f3' : 114, | |
'f4' : 115, | |
'f5' : 116, | |
'f6' : 117, | |
'f7' : 118, | |
'f8' : 119, | |
'f9' : 120, | |
'f10': 121, | |
'f11': 122, | |
'f12': 123, | |
/* start the modifier keys */ | |
'shift' : 16, | |
'ctrl' : 17, | |
'control' : 17, | |
'alt' : 18, | |
'option' : 18, //Mac OS key | |
'opt' : 18, //Mac OS key | |
'cmd' : 224, //Mac OS key | |
'command' : 224, //Mac OS key | |
'fn' : 255, //tested on Lenovo ThinkPad | |
'function' : 255, //tested on Lenovo ThinkPad | |
/* Misc. Keys */ | |
'backspace' : 8, | |
'osxdelete' : 8, //Mac OS version of backspace | |
'enter' : 13, | |
'return' : 13, //Mac OS version of "enter" | |
'space':32, | |
'spacebar':32, | |
'esc':27, | |
'escape':27, | |
'tab':9, | |
'capslock':20, | |
'capslk':20, | |
'super':91, | |
'windows':91, | |
'insert':45, | |
'delete':46, //NOT THE OS X DELETE KEY! | |
'home':36, | |
'end':35, | |
'pgup':33, | |
'pageup':33, | |
'pgdn':34, | |
'pagedown':34, | |
/* Arrow keys */ | |
'left' : 37, | |
'up' : 38, | |
'right': 39, | |
'down' : 40, | |
/* Special char keys */ | |
'`':96, | |
'~':96, | |
'-':45, | |
'_':45, | |
'=':187, | |
'+':187, | |
'[':219, | |
'{':219, | |
']':221, | |
'}':221, | |
'\\':220, //it's actually a \ but there's two to escape the original | |
'|':220, | |
';':59, | |
':':59, | |
"'":222, | |
'"':222, | |
',':188, | |
'<':188, | |
'.':190, | |
'>':190, | |
'/':191, | |
'?':191 | |
}; | |
var x = ''; | |
var y = ''; | |
if(typeof options == 'function' && typeof callback == 'undefined'){ | |
callback = options; | |
options = false; | |
} | |
//IE has issues here... so, we "convert" toString() :( | |
if(keyCombo.toString().indexOf(',') > -1){ //If multiple keys are selected | |
var keySplit = keyCombo.match(/[a-zA-Z0-9]+/gi); | |
} | |
else { //Else just store this single key | |
var keySplit = [keyCombo]; | |
} | |
for(x in keySplit){ //For each key in the array... | |
if(!keySplit.hasOwnProperty(x)) { continue; } | |
//Same as above for the toString() and IE | |
if(keySplit[x].toString().indexOf('+') > -1){ | |
//Key selection by user is a key combo | |
// Create a combo array and split the key combo | |
var combo = []; | |
var comboSplit = keySplit[x].split('+'); | |
// Save the key codes for each element in the key combo | |
for(y in comboSplit){ | |
combo[y] = keyCodes[ comboSplit[y] ]; | |
} | |
keySplit[x] = combo; | |
} | |
else { | |
//Otherwise, it's just a normal, single key command | |
keySplit[x] = keyCodes[ keySplit[x] ]; | |
} | |
} | |
function swapJsonKeyValues(input) { | |
var one, output = {}; | |
for (one in input) { | |
if (input.hasOwnProperty(one)) { | |
output[input[one]] = one; | |
} | |
} | |
return output; | |
} | |
var keyCodesSwitch = swapJsonKeyValues(keyCodes); | |
return this.each(function() { | |
$this = $(this); | |
// Create active keys array | |
// This array will store all the keys that are currently being pressed | |
var activeKeys = []; | |
$this.bind('keydown.jkey',function(e){ | |
// Save the current key press | |
activeKeys[ e.keyCode ] = e.keyCode; | |
if($.inArray(e.keyCode, keySplit) > -1){ // If the key the user pressed is matched with any key the developer set a key code with... | |
if(typeof callback == 'function'){ //and they provided a callback function | |
callback.call(this, keyCodesSwitch[e.keyCode] ); //trigger call back and... | |
if(options === false){ | |
e.preventDefault(); //cancel the normal | |
} | |
} | |
} | |
else { // Else, the key did not match which means it's either a key combo or just dosn't exist | |
// Check if the individual items in the key combo match what was pressed | |
for(x in keySplit){ | |
//if(typeof(keySplit[x]) == 'number'){ keySplit[x] = [keySplit[x]]; } | |
if(typeof(keySplit[x]) == 'number'){ keySplit[x] = [keySplit[x]]; } | |
if($.inArray(e.keyCode,keySplit[x]) > -1){ | |
// Initiate the active variable | |
var active = 'unchecked'; | |
// All the individual keys in the combo with the keys that are currently being pressed | |
for(y in keySplit[x]) { | |
if(active != false) { | |
if($.inArray(keySplit[x][y], activeKeys) > -1){ | |
active = true; | |
} | |
else { | |
active = false; | |
} | |
} | |
} | |
// If all the keys in the combo are being pressed, active will equal true | |
if(active === true){ | |
if(typeof callback == 'function'){ //and they provided a callback function | |
var activeString = ''; | |
for(var z in activeKeys) { | |
if (activeKeys[z] != '') { | |
activeString += keyCodesSwitch[ activeKeys[z] ] + '+'; | |
} | |
} | |
activeString = activeString.substring(0, activeString.length - 1); | |
callback.call(this, activeString ); //trigger call back and... | |
if(options === false){ | |
e.preventDefault(); //cancel the normal | |
} | |
} | |
} | |
} | |
} | |
} // end of if in array | |
}).bind('keyup.jkey',function(e) { | |
// Remove the current key press | |
activeKeys[ e.keyCode ] = ''; | |
}); | |
}); | |
} | |
})(jQuery); |
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