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;(function(root, factory) {
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if (typeof define === 'function' && define.amd) {
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define([], factory);
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} else if (typeof exports === 'object') {
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module.exports = factory();
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} else {
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root.hotkeys = factory();
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}
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}(this, function() {
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//IE对indexOf方法的支持
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if(!Array.prototype.indexOf){
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Array.prototype.indexOf = function(obj){
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for(var i=0; i<this.length; i++) if(this[i]===obj) return i;
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return -1;
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};
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}
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var _api,//对外API
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_keyMap = {//特殊键
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backspace: 8, tab: 9, clear: 12,
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enter: 13, 'return': 13,
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esc: 27, escape: 27, space: 32,
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left: 37, up: 38, right: 39, down: 40,
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del: 46, 'delete': 46,
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home: 36, end: 35,
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pageup: 33, pagedown: 34,
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',': 188, '.': 190, '/': 191,
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'`': 192, '-': 189, '=': 187,
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';': 186, '\'': 222,
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'[': 219, ']': 221, '\\': 220
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},
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_scope = 'all',//默认热键范围
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_modifier = {//修饰键
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'⇧': 16, shift: 16,
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'⌥': 18, alt: 18, option: 18,
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'⌃': 17, ctrl: 17, control: 17,
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'⌘': 91, command: 91
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},
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_downKeys=[],//记录摁下的绑定键
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modifierMap = {
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16:'shiftKey',
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18:'altKey',
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17:'ctrlKey',
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91:'metaKey'
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},
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_mods = { 16: false, 18: false, 17: false, 91: false },
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//返回键码
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code = function(x){
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console.log();
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return _keyMap[x] || x.toUpperCase().charCodeAt(0);
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},
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_handlers={};
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// F1~F12 特殊键
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for(k=1;k<20;k++) {
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_keyMap['f'+k] = 111+k;
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}
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//设置获取当前范围(默认为'所有')
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function setScope(scope){ _scope = scope || 'all';}
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function getScope(){ return _scope || 'all';}
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//绑定事件
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function addEvent(object, event, method) {
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if (object.addEventListener){
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object.addEventListener(event, method, false);
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}else if(object.attachEvent){
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object.attachEvent('on'+event, function(){ method(window.event); });
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}
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}
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//判断摁下的键是否为某个键,返回true或者false
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function isPressed(keyCode) {
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if(typeof(keyCode) === 'string'){
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keyCode = code(keyCode);//转换成键码
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}
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return _downKeys.indexOf(keyCode) !==-1;
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}
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//获取摁下绑定键的键值
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function getPressedKeyCodes (argument) { return _downKeys.slice(0);}
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//处理keydown事件
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function dispatch (event) {
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var key = event.keyCode,scope,asterisk = _handlers['*'];
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//搜集绑定的键
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if(_downKeys.indexOf(key)===-1) _downKeys.push(key);
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//Gecko(Friefox)的command键值224,在Webkit(Chrome)中保持一致
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//Webkit左右command键值不一样
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if(key === 93 || key === 224) key = 91;
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if(key in _mods) {
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_mods[key] = true;
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// 将特殊字符的key注册到 hotkeys 上
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for(var k in _modifier)if(_modifier[k] === key) hotkeys[k] = true;
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if(!asterisk) return;
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}
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//将modifierMap里面的修饰键绑定到event中
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for(var e in _mods) _mods[e] = event[modifierMap[e]];
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//表单控件控件过滤 默认表单控件不触发快捷键
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if(!hotkeys.filter.call(this,event)) return;
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//获取范围 默认为all
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scope = getScope();
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//对任何按键做处理
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if(asterisk) for (i = 0; i < asterisk.length; i++) {
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if(asterisk[i].scope === scope) eventHandler(event,asterisk[i],scope);
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}
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// key 不在_handlers中返回
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if (!(key in _handlers)) return;
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for (i = 0; i < _handlers[key].length; i++) {
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//找到处理内容
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eventHandler(event,_handlers[key][i],scope);
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}
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}
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function eventHandler(event,handler,scope){
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var modifiersMatch;
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//看它是否在当前范围
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if(handler.scope === scope || handler.scope === 'all'){
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//检查是否匹配修饰符(如果有返回true)
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modifiersMatch = handler.mods.length > 0;
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for(var y in _mods){
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if((!_mods[y] && handler.mods.indexOf(+y) > -1) ||
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(_mods[y] && handler.mods.indexOf(+y) === -1)) modifiersMatch = false;
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}
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// 调用处理程序,如果是修饰键不做处理
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if((handler.mods.length === 0 && !_mods[16] && !_mods[18] && !_mods[17] && !_mods[91]) || modifiersMatch || handler.shortcut === '*'){
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if(handler.method(event, handler)===false){
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if(event.preventDefault) event.preventDefault();
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else event.returnValue = false;
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if(event.stopPropagation) event.stopPropagation();
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if(event.cancelBubble) event.cancelBubble = true;
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}
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}
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}
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}
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//解除绑定某个范围的快捷键
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function unbind (key,scope) {
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var multipleKeys = getKeys(key),keys,mods = [],obj;
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for (var i = 0; i < multipleKeys.length; i++) {
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//将组合快捷键拆分为数组
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keys =multipleKeys[i].split('+');
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//记录每个组合键中的修饰键的键码 返回数组
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if(keys.length > 1) mods=getMods(keys);
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//获取除修饰键外的键值key
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key = keys[keys.length - 1];
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key = code(key);
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//判断是否传入范围,没有就获取范围
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if(scope === undefined) scope = getScope();
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//如何key不在 _handlers 中返回不做处理
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if (!_handlers[key]) return;
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|
//清空 handlers 中数据,
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|
//让触发快捷键键之后没有事件执行到达解除快捷键绑定的目的
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for (var r = 0; r < _handlers[key].length; r++) {
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obj = _handlers[key][r];
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|
//判断是否在范围内并且键值相同
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|
if (obj.scope === scope && compareArray(obj.mods, mods)) {
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_handlers[key][r] = {};
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}
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}
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}
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}
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//循环删除handlers中的所有 scope(范围)
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|
function deleteScope(scope){
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|
var key, handlers, i;
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|
for (key in _handlers) {
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|
handlers = _handlers[key];
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|
for (i = 0; i < handlers.length; ) {
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|
if (handlers[i].scope === scope) handlers.splice(i, 1);
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else i++;
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}
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}
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}
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|
//比较修饰键的数组
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|
|
function compareArray(a1, a2) {
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|
if (a1.length !== a2.length) return false;
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for (var i = 0; i < a1.length; i++) {
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if (a1[i] !== a2[i]) return false;
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}
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|
return true;
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}
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|
//表单控件控件判断 返回 Boolean
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function filter(event){
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|
|
var tagName = (event.target || event.srcElement).tagName;
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|
|
//忽略这些标签情况下快捷键无效
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return !(tagName === 'INPUT' || tagName === 'SELECT' || tagName === 'TEXTAREA');
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}
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//修饰键转换成对应的键码
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|
|
function getMods (key) {
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|
|
var mods = key.slice(0, key.length - 1);
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for (var i = 0; i < mods.length; i++) mods[i] = _modifier[mods[i]];
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return mods;
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|
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}
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|
|
//处理传的key字符串转换成数组
|
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|
|
function getKeys(key) {
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|
|
var keys;
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|
|
key = key.replace(/\s/g, '');//匹配任何空白字符,包括空格、制表符、换页符等等
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|
keys = key.split(',');
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if ((keys[keys.length - 1]) === '') keys[keys.length - 2] += ',';
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return keys;
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}
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//在全局document上设置快捷键
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|
|
addEvent(document, 'keydown', function(event) {
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|
dispatch(event);
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});
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|
addEvent(document, 'keyup',function(event){
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clearModifier(event);
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});
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|
//清除修饰键
|
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|
|
function clearModifier(event){
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|
|
var key = event.keyCode,
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i = _downKeys.indexOf(key);
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if(i>=0) _downKeys.splice(i,1);
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|
|
//修饰键 shiftKey altKey ctrlKey (command||metaKey) 清除
|
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|
|
if(key === 93 || key === 224) key = 91;
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|
|
if(key in _mods) {
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|
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_mods[key] = false;
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|
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for(var k in _modifier) if(_modifier[k] === key) hotkeys[k] = false;
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}
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}
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|
|
//主体hotkeys函数
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|
|
function hotkeys(key,scope,method){
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|
|
var keys = getKeys(key), mods=[],i=0;
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|
|
//对为设定范围的判断
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|
|
if (method === undefined) {
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|
method = scope;
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|
scope = 'all';
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}
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|
|
//对于每个快捷键处理
|
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|
|
for(;i < keys.length; i++){
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|
key = keys[i].split('+');
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|
mods = [];
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|
|
//如果是组合快捷键取得组合快捷键
|
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|
|
if (key.length > 1){
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|
|
mods = getMods(key);
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|
|
key = [key[key.length-1]];
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|
}
|
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|
|
//转换成键码
|
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|
|
key = key[0];
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|
|
key = key === '*' ? '*' : code(key);
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|
|
|
//判断key是否在_handlers中,不在就赋一个空数组
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|
|
if (!(key in _handlers)) _handlers[key] = [];
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|
|
_handlers[key].push({shortcut: keys[i], scope: scope, method: method, key: keys[i], mods: mods});
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|
|
}
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|
|
}
|
|
|
|
|
_api = {
|
|
|
|
|
setScope:setScope,
|
|
|
|
|
getScope:getScope,
|
|
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|
|
deleteScope:deleteScope,
|
|
|
|
|
getPressedKeyCodes:getPressedKeyCodes,
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|
|
|
|
isPressed:isPressed,
|
|
|
|
|
filter:filter,
|
|
|
|
|
unbind:unbind
|
|
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|
|
};
|
|
|
|
|
for (var a in _api) hotkeys[a] = _api[a];
|
|
|
|
|
|
|
|
|
|
var _hotkeys = window.hotkeys
|
|
|
|
|
hotkeys.noConflict = function( deep ) {
|
|
|
|
|
if ( deep && window.hotkeys === hotkeys ) {
|
|
|
|
|
window.hotkeys = _hotkeys;
|
|
|
|
|
}
|
|
|
|
|
return hotkeys;
|
|
|
|
|
};
|
|
|
|
|
window.hotkeys = hotkeys;
|
|
|
|
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|
|
|
|
|
|
|
|
|
return hotkeys;
|
|
|
|
|
}));
|