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/*
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* jQuery Hotkeys Plugin
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* Copyright 2010, John Resig
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* Dual licensed under the MIT or GPL Version 2 licenses.
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*
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* Based upon the plugin by Tzury Bar Yochay:
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* http://github.com/tzuryby/hotkeys
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*
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* Original idea by:
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* Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
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*/
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(function(jQuery){
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jQuery.hotkeys = {
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version: "0.8",
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specialKeys: {
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8: "backspace", 9: "tab", 13: "return", 16: "shift", 17: "ctrl", 18: "alt", 19: "pause",
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20: "capslock", 27: "esc", 32: "space", 33: "pageup", 34: "pagedown", 35: "end", 36: "home",
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37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "del",
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96: "0", 97: "1", 98: "2", 99: "3", 100: "4", 101: "5", 102: "6", 103: "7",
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104: "8", 105: "9", 106: "*", 107: "+", 109: "-", 110: ".", 111 : "/",
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112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8",
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120: "f9", 121: "f10", 122: "f11", 123: "f12", 144: "numlock", 145: "scroll", 191: "/", 224: "meta"
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},
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shiftNums: {
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"`": "~", "1": "!", "2": "@", "3": "#", "4": "$", "5": "%", "6": "^", "7": "&",
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"8": "*", "9": "(", "0": ")", "-": "_", "=": "+", ";": ": ", "'": "\"", ",": "<",
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".": ">", "/": "?", "\\": "|"
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}
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};
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function keyHandler( handleObj ) {
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// Only care when a possible input has been specified
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if ( typeof handleObj.data !== "string" ) {
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return;
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}
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var origHandler = handleObj.handler,
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keys = handleObj.data.toLowerCase().split(" ");
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handleObj.handler = function( event ) {
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// Don't fire in text-accepting inputs that we didn't directly bind to
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if ( this !== event.target && (/textarea|select/i.test( event.target.nodeName ) ||
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event.target.type === "text") ) {
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return;
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}
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// Keypress represents characters, not special keys
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var special = event.type !== "keypress" && jQuery.hotkeys.specialKeys[ event.which ],
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character = String.fromCharCode( event.which ).toLowerCase(),
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key, modif = "", possible = {};
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// check combinations (alt|ctrl|shift+anything)
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if ( event.altKey && special !== "alt" ) {
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modif += "alt+";
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}
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if ( event.ctrlKey && special !== "ctrl" ) {
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modif += "ctrl+";
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}
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// TODO: Need to make sure this works consistently across platforms
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if ( event.metaKey && !event.ctrlKey && special !== "meta" ) {
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modif += "meta+";
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}
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if ( event.shiftKey && special !== "shift" ) {
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modif += "shift+";
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}
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if ( special ) {
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possible[ modif + special ] = true;
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} else {
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possible[ modif + character ] = true;
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possible[ modif + jQuery.hotkeys.shiftNums[ character ] ] = true;
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// "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
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if ( modif === "shift+" ) {
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possible[ jQuery.hotkeys.shiftNums[ character ] ] = true;
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}
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}
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for ( var i = 0, l = keys.length; i < l; i++ ) {
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if ( possible[ keys[i] ] ) {
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return origHandler.apply( this, arguments );
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}
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}
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};
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}
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jQuery.each([ "keydown", "keyup", "keypress" ], function() {
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jQuery.event.special[ this ] = { add: keyHandler };
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});
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})( jQuery );
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