jquery.hotkeys.js 3.2 KB

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