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

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

// FIXME: Is this worthless since you can do: if(name in obj)
// is this the right place for this?
dojo.lang.has = function(/*Object*/obj, /*String*/name){
	try{
		return typeof obj[name] != "undefined";
	}catch(e){ return false; }
}

dojo.lang.isEmpty = function(/*Object*/obj){
	if(dojo.lang.isObject(obj)){
		var tmp = {};
		var count = 0;
		for(var x in obj){
			if(obj[x] && (!tmp[x])){
				count++;
				break;
			} 
		}
		return count == 0;
	}else if(dojo.lang.isArrayLike(obj) || dojo.lang.isString(obj)){
		return obj.length == 0;
	}
}

dojo.lang.map = function(/*Array*/arr, /*Object|Function*/obj, /*Function?*/unary_func){
	var isString = dojo.lang.isString(arr);
	if(isString){
		// arr: String
		arr = arr.split("");
	}
	if(dojo.lang.isFunction(obj)&&(!unary_func)){
		unary_func = obj;
		obj = dj_global;
	}else if(dojo.lang.isFunction(obj) && unary_func){
		// ff 1.5 compat
		var tmpObj = obj;
		obj = unary_func;
		unary_func = tmpObj;
	}
	if(Array.map){
	 	var outArr = Array.map(arr, unary_func, obj);
	}else{
		var outArr = [];
		for(var i=0;i<arr.length;++i){
			outArr.push(unary_func.call(obj, arr[i]));
		}