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jQuery Hotkeys Plugin

Originally from github jeresig/jquery.hotkeys

Tento skript by neměl být instalován přímo. Jedná se o knihovnu, kterou by měly jiné skripty využívat pomocí meta příkazu // @require https://update.greatest.deepsurf.us/scripts/8984/44373/jQuery%20Hotkeys%20Plugin.js 

  1. // ==UserScript==
  2. // @name          jQuery Hotkeys Plugin
  3. // @namespace     JQHP
  4. // @author        drhouse
  5. // @version       1.0
  6. // ==/UserScript==
  7.  
  8. /*
  9.  * jQuery Hotkeys Plugin
  10.  * Copyright 2010, John Resig
  11.  * Dual licensed under the MIT or GPL Version 2 licenses.
  12.  *
  13.  * Based upon the plugin by Tzury Bar Yochay:
  14.  * http://github.com/tzuryby/hotkeys
  15.  *
  16.  * Original idea by:
  17.  * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
  18. */
  19.  
  20. /*
  21.  * One small change is: now keys are passed by object { keys: '...' }
  22.  * Might be useful, when you want to pass some other data to your handler
  23.  */
  24.  
  25. (function(jQuery){
  26. 	
  27. 	jQuery.hotkeys = {
  28. 		version: "0.8",
  29.  
  30. 		specialKeys: {
  31. 			8: "backspace", 9: "tab", 10: "return", 13: "return", 16: "shift", 17: "ctrl", 18: "alt", 19: "pause",
  32. 			20: "capslock", 27: "esc", 32: "space", 33: "pageup", 34: "pagedown", 35: "end", 36: "home",
  33. 			37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "del", 
  34. 			96: "0", 97: "1", 98: "2", 99: "3", 100: "4", 101: "5", 102: "6", 103: "7",
  35. 			104: "8", 105: "9", 106: "*", 107: "+", 109: "-", 110: ".", 111 : "/", 
  36. 			112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8", 
  37. 			120: "f9", 121: "f10", 122: "f11", 123: "f12", 144: "numlock", 145: "scroll", 186: ";", 191: "/",
  38. 			220: "\\", 222: "'", 224: "meta"
  39. 		},
  40. 	
  41. 		shiftNums: {
  42. 			"`": "~", "1": "!", "2": "@", "3": "#", "4": "$", "5": "%", "6": "^", "7": "&", 
  43. 			"8": "*", "9": "(", "0": ")", "-": "_", "=": "+", ";": ": ", "'": "\"", ",": "<", 
  44. 			".": ">",  "/": "?",  "\\": "|"
  45. 		}
  46. 	};
  47.  
  48. 	function keyHandler( handleObj ) {
  49. 		if ( typeof handleObj.data === "string" ) {
  50. 			handleObj.data = { keys: handleObj.data };
  51. 		}
  52.  
  53. 		// Only care when a possible input has been specified
  54. 		if ( !handleObj.data.keys || typeof handleObj.data.keys !== "string" ) {
  55. 			return;
  56. 		}
  57.  
  58. 		var origHandler = handleObj.handler,
  59. 			keys = handleObj.data.keys.toLowerCase().split(" "),
  60. 			textAcceptingInputTypes = ["text", "password", "number", "email", "url", "range", "date", "month", "week", "time", "datetime", "datetime-local", "search", "color"];
  61. 	
  62. 		handleObj.handler = function( event ) {
  63. 			// Don't fire in text-accepting inputs that we didn't directly bind to
  64. 			if ( this !== event.target && (/textarea|select/i.test( event.target.nodeName ) ||
  65. 				jQuery.inArray(event.target.type, textAcceptingInputTypes) > -1 ) ) {
  66. 				return;
  67. 			}
  68. 			
  69. 			// Keypress represents characters, not special keys
  70. 			var special = event.type !== "keypress" && jQuery.hotkeys.specialKeys[ event.which ],
  71. 				character = String.fromCharCode( event.which ).toLowerCase(),
  72. 				key, modif = "", possible = {};
  73.  
  74. 			// check combinations (alt|ctrl|shift+anything)
  75. 			if ( event.altKey && special !== "alt" ) {
  76. 				modif += "alt+";
  77. 			}
  78.  
  79. 			if ( event.ctrlKey && special !== "ctrl" ) {
  80. 				modif += "ctrl+";
  81. 			}
  82. 			
  83. 			// TODO: Need to make sure this works consistently across platforms
  84. 			if ( event.metaKey && !event.ctrlKey && special !== "meta" ) {
  85. 				modif += "meta+";
  86. 			}
  87.  
  88. 			if ( event.shiftKey && special !== "shift" ) {
  89. 				modif += "shift+";
  90. 			}
  91.  
  92. 			if ( special ) {
  93. 				possible[ modif + special ] = true;
  94.  
  95. 			} else {
  96. 				possible[ modif + character ] = true;
  97. 				possible[ modif + jQuery.hotkeys.shiftNums[ character ] ] = true;
  98.  
  99. 				// "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
  100. 				if ( modif === "shift+" ) {
  101. 					possible[ jQuery.hotkeys.shiftNums[ character ] ] = true;
  102. 				}
  103. 			}
  104.  
  105. 			for ( var i = 0, l = keys.length; i < l; i++ ) {
  106. 				if ( possible[ keys[i] ] ) {
  107. 					return origHandler.apply( this, arguments );
  108. 				}
  109. 			}
  110. 		};
  111. 	}
  112.  
  113. 	jQuery.each([ "keydown", "keyup", "keypress" ], function() {
  114. 		jQuery.event.special[ this ] = { add: keyHandler };
  115. 	});
  116.  
  117. })( jQuery );