/**
* JavaScript Inheritance Class
*
* 实现了继承和定义对象，初始化自动调用 ctor() 构造函数，自带一个简单的 clone() 拷贝函数
* 每个 Class 都带有一个唯一 ID : _pid，每个 new 出来的对象也带一个唯一 ID : _uid (可以用于相同 Class 的不同对象)
*
* @
author :
zhenda.li */
/**
* @
name ClassManager
*/
var ClassManager = {
pid: (0 | (Math.random() * 998)), // 每个 Class 的唯一 ID
uid: (0 | (Math.random() * 998)), // 每个 New 出来的对象唯一 ID
getPID: function () {
return this.pid++;
},
getUID: function () {
return this.uid++;
}
};
(function () {
var fnTest = /\b_super\b/;
this.Class = function () {
};
/**
* Create a new Class that inherits from this Class
* @
static * @
param {object} prop
* @
return {function}
*/
Class.extend = function (prop) {
var _super = this.prototype;
var prototype = Object.create(_super);
var desc = {writable: true, enumerable: false, configurable: true};
function Class() {
this._uid = ClassManager.getUID();
if (this.ctor) {
this.ctor.apply(this, arguments);
}
}
desc.value = ClassManager.getPID();
Object.defineProperty(prototype, '_pid', desc);
for (var name in prop) {
var isFunc = isFunction(prop[name]);
var override = isFunction(_super[name]);
var hasSuperCall = fnTest.test(prop[name]);
if (isFunc && override && hasSuperCall) {
desc.value = (function (name, fn) {
return function () {
var tmp = this._super;
this._super = _super[name];
var ret = fn.apply(this, arguments);
this._super = tmp;
return ret;
};
})(name, prop[name]);
Object.defineProperty(prototype, name, desc);
} else {
prototype[name] = prop[name];
}
}
Class.prototype = prototype;
desc.value = Class;
Object.defineProperty(Class.prototype, 'constructor', desc);
/**
* 快捷设置属性方法
* e.g : obj.attr({ x : 1, y : 2 });
*/
Class.prototype.attr = function (attrs) {
for (var key in attrs) {
if (!isUndefined(this[key]))
this[key] = attrs[key];
}
};
/**
* 每个对象自带拷贝方法
* @
return Class
*/
Class.prototype.clone = function () {
var newObj = (this.constructor) ? new this.constructor : {};
for (var name in this) {
var copy = this[name];
if ((typeof copy) === "Class") {
newObj[name] = copy.clone();
} else {
newObj[name] = copy;
}
}
return newObj;
};
Class.extend = arguments.callee;
return Class;
};
})();