application/media/js/jquery.hotkeys.min.js

   1 /*
   2  * jQuery Hotkeys Plugin
   3  * Copyright 2010, John Resig
   4  * Dual licensed under the MIT or GPL Version 2 licenses.
   5  *
   6  * Based upon the plugin by Tzury Bar Yochay:
   7  * http://github.com/tzuryby/hotkeys
   8  *
   9  * Original idea by:
  10  * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
  11 */
  12
  13 (function(jQuery){
  14
  15         jQuery.hotkeys = {
  16                 version: "0.8",
  17
  18                 specialKeys: {
  19                         8: "backspace", 9: "tab", 13: "return", 16: "shift", 17: "ctrl", 18: "alt", 19: "pause",
  20                         20: "capslock", 27: "esc", 32: "space", 33: "pageup", 34: "pagedown", 35: "end", 36: "home",
  21                         37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "del",
  22                         96: "0", 97: "1", 98: "2", 99: "3", 100: "4", 101: "5", 102: "6", 103: "7",
  23                         104: "8", 105: "9", 106: "*", 107: "+", 109: "-", 110: ".", 111 : "/",
  24                         112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8",
  25                         120: "f9", 121: "f10", 122: "f11", 123: "f12", 144: "numlock", 145: "scroll", 191: "/", 224: "meta"
  26                 },
  27
  28                 shiftNums: {
  29                         "`": "~", "1": "!", "2": "@", "3": "#", "4": "$", "5": "%", "6": "^", "7": "&",
  30                         "8": "*", "9": "(", "0": ")", "-": "_", "=": "+", ";": ": ", "'": "\"", ",": "<",
  31                         ".": ">",  "/": "?",  "\\": "|"
  32                 }
  33         };
  34
  35         function keyHandler( handleObj ) {
  36                 // Only care when a possible input has been specified
  37                 if ( typeof handleObj.data !== "string" ) {
  38                         return;
  39                 }
  40
  41                 var origHandler = handleObj.handler,
  42                         keys = handleObj.data.toLowerCase().split(" ");
  43
  44                 handleObj.handler = function( event ) {
  45                         // Don't fire in text-accepting inputs that we didn't directly bind to
  46                         if ( this !== event.target && (/textarea|select/i.test( event.target.nodeName ) ||
  47                                  event.target.type === "text") ) {
  48                                 return;
  49                         }
  50
  51                         // Keypress represents characters, not special keys
  52                         var special = event.type !== "keypress" && jQuery.hotkeys.specialKeys[ event.which ],
  53                                 character = String.fromCharCode( event.which ).toLowerCase(),
  54                                 key, modif = "", possible = {};
  55
  56                         // check combinations (alt|ctrl|shift+anything)
  57                         if ( event.altKey && special !== "alt" ) {
  58                                 modif += "alt+";
  59                         }
  60
  61                         if ( event.ctrlKey && special !== "ctrl" ) {
  62                                 modif += "ctrl+";
  63                         }
  64
  65                         // TODO: Need to make sure this works consistently across platforms
  66                         if ( event.metaKey && !event.ctrlKey && special !== "meta" ) {
  67                                 modif += "meta+";
  68                         }
  69
  70                         if ( event.shiftKey && special !== "shift" ) {
  71                                 modif += "shift+";
  72                         }
  73
  74                         if ( special ) {
  75                                 possible[ modif + special ] = true;
  76
  77                         } else {
  78                                 possible[ modif + character ] = true;
  79                                 possible[ modif + jQuery.hotkeys.shiftNums[ character ] ] = true;
  80
  81                                 // "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
  82                                 if ( modif === "shift+" ) {
  83                                         possible[ jQuery.hotkeys.shiftNums[ character ] ] = true;
  84                                 }
  85                         }
  86
  87                         for ( var i = 0, l = keys.length; i < l; i++ ) {
  88                                 if ( possible[ keys[i] ] ) {
  89                                         return origHandler.apply( this, arguments );
  90                                 }
  91                         }
  92                 };
  93         }
  94
  95         jQuery.each([ "keydown", "keyup", "keypress" ], function() {
  96                 jQuery.event.special[ this ] = { add: keyHandler };
  97         });
  98
  99 })( jQuery );