flymis/WebRoot/dojojs/src/lang/common.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.common");

dojo.lang.inherits = function(/*Function*/ subclass, /*Function*/ superclass){
	// summary: Set up inheritance between two classes.
	if(typeof superclass != 'function'){ 
		dojo.raise("dojo.inherits: superclass argument ["+superclass+"] must be a function (subclass: ["+subclass+"']");
	}
	subclass.prototype = new superclass();
	subclass.prototype.constructor = subclass;
	subclass.superclass = superclass.prototype;
	// DEPRECATED: super is a reserved word, use 'superclass'
	subclass['super'] = superclass.prototype;
}

dojo.lang._mixin = function(/*Object*/ obj, /*Object*/ props){
	// summary:	Adds all properties and methods of props to obj.
	var tobj = {};
	for(var x in props){
		// the "tobj" condition avoid copying properties in "props"
		// inherited from Object.prototype.  For example, if obj has a custom
		// toString() method, don't overwrite it with the toString() method
		// that props inherited from Object.protoype
		if((typeof tobj[x] == "undefined") || (tobj[x] != props[x])){
			obj[x] = props[x];
		}
	}
	// IE doesn't recognize custom toStrings in for..in
	if(dojo.render.html.ie 
		&& (typeof(props["toString"]) == "function")
		&& (props["toString"] != obj["toString"])
		&& (props["toString"] != tobj["toString"]))
	{
		obj.toString = props.toString;
	}
	return obj; // Object
}

dojo.lang.mixin = function(/*Object*/ obj, /*Object...*/props){
	// summary:	Adds all properties and methods of props to obj.
	for(var i=1, l=arguments.length; i<l; i++){
		dojo.lang._mixin(obj, arguments[i]);
	}
	return obj; // Object
}

dojo.lang.extend = function(/*Object*/ constructor, /*Object...*/ props){
	// summary:	Adds all properties and methods of props to constructor's prototype,
	//			making them available to all instances created with constructor.
	for(var i=1, l=arguments.length; i<l; i++){
		dojo.lang._mixin(constructor.prototype, arguments[i]);