flymis/WebRoot/dojojs/src/lang/declare.js

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/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.lang.declare");

dojo.require("dojo.lang.common");
dojo.require("dojo.lang.extras");

dojo.lang.declare = function(/*String*/ className, /*Function|Array*/ superclass, /*Function?*/ init, /*Object|Array*/ props){
/*
 * summary: Create a feature-rich constructor with a compact notation
 *
 * className: the name of the constructor (loosely, a "class")
 *
 * superclass: may be a Function, or an Array of Functions. 
 *   If "superclass" is an array, the first element is used 
 *   as the prototypical ancestor and any following Functions 
 *   become mixin ancestors.
 *
 * init: an initializer function
 *
 * props: an object (or array of objects) whose properties are copied to the created prototype
 *
 * description: Create a constructor using a compact notation for inheritance and prototype extension.
 *
 *   "superclass" argument may be a Function, or an array of 
 *   Functions. 
 *
 *   If "superclass" is an array, the first element is used 
 *   as the prototypical ancestor and any following Functions 
 *   become mixin ancestors. 
 * 
 *   All "superclass(es)" must be Functions (not mere Objects).
 *
 *   Using mixin ancestors provides a type of multiple
 *   inheritance. Mixin ancestors prototypical 
 *   properties are copied to the subclass, and any 
 *   inializater/constructor is invoked. 
 *
 *   Properties of object "props" are copied to the constructor 
 *   prototype. If "props" is an array, properties of each
 *   object in the array are copied to the constructor prototype.
 *
 *   name of the class ("className" argument) is stored in 
 *   "declaredClass" property
 * 
 *   Initializer functions are called when an object 
 *   is instantiated from this constructor.
 * 
 * Aliased as "dojo.declare"
 *
 * Usage:
 *