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//
//  Copyright (c) 2014-present, Egret Technology.
//  All rights reserved.
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//  modification, are permitted provided that the following conditions are met:
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//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
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//////////////////////////////////////////////////////////////////////////////////////

namespace egret {

    /**
     * Return the fully qualified class name of an object
     * @param value The object for which a fully qualified class name is desired. Any JavaScript value may be passed to
     * this method including all available JavaScript types, object instances, primitive types such as number, and class objects.
     * @returns A string containing the fully qualified class name.
     * @example
     * <pre>
     *  egret.getQualifiedClassName(egret.DisplayObject) //return "egret.DisplayObject"
     * </pre>
     * @version Egret 2.4
     * @platform Web,Native
     * @includeExample egret/utils/getQualifiedClassName.ts
     * @language en_US
     */
    /**
     * 返回对象的完全限定类名。
     * @param value 需要完全限定类名称的对象，可以将任何 JavaScript 值传递给此方法，包括所有可用的 JavaScript 类型、对象实例、原始类型
     * （如number)和类对象
     * @returns 包含完全限定类名称的字符串。
     * @example
     * <pre>
     *  egret.getQualifiedClassName(egret.DisplayObject) //返回 "egret.DisplayObject"
     * </pre>
     * @version Egret 2.4
     * @platform Web,Native
     * @includeExample egret/utils/getQualifiedClassName.ts
     * @language zh_CN
     */
    export function getQualifiedClassName(value:any):string {
        let type = typeof value;
        if (!value || (type != "object"&&!value.prototype)) {
            return type;
        }
        let prototype:any = value.prototype ? value.prototype : Object.getPrototypeOf(value);
        if (prototype.hasOwnProperty("__class__")) {
            return prototype["__class__"];
        }
        let constructorString:string = prototype.constructor.toString().trim();
        let index:number = constructorString.indexOf("(");
        let className:string = constructorString.substring(9, index);
        Object.defineProperty(prototype, "__class__", {
            value: className,
            enumerable: false,
            writable: true
        });
        return className;
    }
}