├── .gitignore
├── LICENSE
├── README.md
├── component.json
└── events.js


/.gitignore:
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1 | .DS_Store
2 | .idea


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/LICENSE:
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 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2015 
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 
23 | 


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/README.md:
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1 | # events
2 | 事件管理中心，用于全局监听，派发事件
3 | 


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/component.json:
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1 | {
2 |   "name": "events",
3 |   "version": "0.0.5",
4 |   "main": "events.js",
5 |   "description": "事件管理中心，用于全局监听，派发事件"
6 | }


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/events.js:
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  1 | /**
  2 |  *  事件管理中心，用于监听，派发事件
  3 |  */
  4 | var _listenerMap = {},
  5 | 	slice = [].slice;
  6 | 
  7 | function call(callback, args) {
  8 | 	var fn = callback[0],
  9 | 		context = callback[1],
 10 | 		args = callback[2].concat(args);
 11 | 	try {
 12 | 		return fn.apply(context, args);
 13 | 	} catch (e) {
 14 | 		setTimeout(function () {
 15 | 			throw e;
 16 | 		}, 0);
 17 | 	}
 18 | }
 19 | 
 20 | function arrayClone(arr, len) {
 21 | 	var copy = new Array(len);
 22 | 	while (len--)
 23 | 		copy[len] = arr[len];
 24 | 	return copy;
 25 | }
 26 | 
 27 | function emit(type, args) {
 28 | 	var listenerList = _listenerMap[type];
 29 | 	if (!listenerList)
 30 | 		return true;
 31 | 	args = slice.call(arguments, 1);
 32 | 	var len = listenerList.cbs.length;
 33 | 	var cbs = arrayClone(listenerList.cbs, len);
 34 | 	var ret = true;
 35 | 	for (var index = 0; index < len; index++) {
 36 | 		if (!cbs[index])
 37 | 			continue;
 38 | 		ret = call(cbs[index], args) !== false && ret;
 39 | 	}
 40 | 	return !!ret;
 41 | }
 42 | 
 43 | var events = {
 44 | 	on: function (type, fn, context) {
 45 | 		var listenerList,
 46 | 			callback, args;
 47 | 		if (!(listenerList = _listenerMap[type])) {
 48 | 			_listenerMap[type] = listenerList = {
 49 | 				args: null,
 50 | 				cbs: []
 51 | 			};
 52 | 		}
 53 | 
 54 | 		callback = [fn, context, slice.call(arguments, 3)];
 55 | 		if (args = listenerList.args) {
 56 | 			call(callback, args);
 57 | 		} else {
 58 | 			listenerList.cbs.push(callback);
 59 | 		}
 60 | 	},
 61 | 	un: function (type, fn) {
 62 | 		var listenerList = _listenerMap[type],
 63 | 			cbs, count;
 64 | 		if (!listenerList)
 65 | 			return true;
 66 | 		if (arguments.length == 1) {
 67 | 			listenerList.cbs = [];
 68 | 		} else {
 69 | 			cbs = listenerList.cbs;
 70 | 			count = cbs.length;
 71 | 			while (count--) {
 72 | 				if (cbs[count] && cbs[count][0] === fn) {
 73 | 					cbs.splice(count, 1);
 74 | 				}
 75 | 			}
 76 | 		}
 77 | 	},
 78 | 	emit: function (type, args) {
 79 | 		return emit.apply(this, arguments);
 80 | 	},
 81 | 	done: function (type, args) {
 82 | 		var listenerList, ret, cbs, count;
 83 | 		if (!(listenerList = _listenerMap[type])) {
 84 | 			_listenerMap[type] = listenerList = {
 85 | 				args: args,
 86 | 				cbs: []
 87 | 			};
 88 | 		}
 89 | 		cbs = listenerList.cbs;
 90 | 		count = cbs.length;
 91 | 
 92 | 		ret = emit.apply(this, arguments);
 93 | 
 94 | 		args = slice.call(arguments, 1);
 95 | 		listenerList.args = args;
 96 | 		listenerList.cbs = cbs.slice(count);
 97 | 	},
 98 | 	undo: function (type) {
 99 | 		var listenerList = _listenerMap[type];
100 | 		if (!listenerList)
101 | 			return false;
102 | 		listenerList.args = null;
103 | 	}
104 | };
105 | 
106 | module.exports = events;
107 | 


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