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/* --- name: "Keyboard" description: "" license: - "[GNU Lesser General Public License](http://opensource.org/licenses/lgpl-license.php)" - "[MIT License](http://opensource.org/licenses/mit-license.php)" requires: - declare - Events provides: Keyboard ... */ var Keyboard = function () { var keyName, codeNames = {}, keyCodes = { // Alphabet 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, // Numbers n0:48, n1:49, n2:50, n3:51, n4:52, n5:53, n6:54, n7:55, n8:56, n9:57, // Controls tab: 9, enter:13, shift:16, backspace:8, ctrl:17, alt :18, esc :27, space :32, menu:93, pause:19, cmd :91, insert :45, home:36, pageup :33, 'delete':46, end :35, pagedown:34, // F* f1:112, f2:113, f3:114, f4 :115, f5 :116, f6 :117, f7:118, f8:119, f9:120, f10:121, f11:122, f12:123, // numpad np0: 96, np1: 97, np2: 98, np3: 99, np4:100, np5:101, np6:102, np7:103, np8:104, np9:105, npslash:11,npstar:106,nphyphen:109,npplus:107,npdot:110, // Lock capslock:20, numlock:144, scrolllock:145, // Symbols equals: 61, hyphen :109, coma :188, dot:190, gravis:192, backslash:220, sbopen:219, sbclose:221, slash :191, semicolon: 59, apostrophe: 222, // Arrows aleft:37, aup:38, aright:39, adown:40 }; for (keyName in keyCodes) if (keyCodes.hasOwnProperty(keyName)) { codeNames[ keyCodes[keyName] ] = keyName; } /** @class atom.Keyboard */ return declare( 'atom.Keyboard', { initialize : function (element, preventDefault) { if (Array.isArray(element)) { preventDefault = element; element = null; } if (element == null) element = document; if (element == document) { if (this.constructor.instance) { return this.constructor.instance; } this.constructor.instance = this; } this.events = new Events(this); this.keyStates = {}; this.preventDefault = preventDefault; atom.dom(element).bind({ keyup: this.keyEvent('up'), keydown: this.keyEvent('down'), keypress: this.keyEvent('press') }); }, /** @private */ keyEvent: function (event) { return this.onKeyEvent.bind(this, event); }, /** @private */ onKeyEvent: function (event, e) { var key = this.constructor.keyName(e), prevent = this.prevent(key); e.keyName = key; if (prevent) e.preventDefault(); this.events.fire( event, [e] ); if (event == 'down') { this.events.fire(key, [e]); this.keyStates[key] = true; } else if (event == 'up') { this.events.fire(key + ':up', [e]); delete this.keyStates[key]; } else if (event == 'press') { this.events.fire(key + ':press', [e]); } return !prevent; }, /** @private */ prevent : function (key) { var pD = this.preventDefault; return pD && (pD === true || pD.indexOf(key) >= 0); }, key: function (keyName) { return !!this.keyStates[ this.constructor.keyName(keyName) ]; } }).own({ keyCodes : keyCodes, codeNames: codeNames, keyName: function (code) { if (code && code.keyCode != null) { code = code.keyCode; } var type = typeof code; if (type == 'number') { return this.codeNames[code]; } else if (type == 'string' && code in this.keyCodes) { return code; } return null; } }); }();
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