Struts example source code file (type.js)

This example Struts source code file (type.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

array, array, boolean, boolean, error, function, if, number, number, object, object, string

The Struts type.js source code

/*
	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.type");
dojo.require("dojo.lang.common");
dojo.lang.whatAmI = function (value) {
	dojo.deprecated("dojo.lang.whatAmI", "use dojo.lang.getType instead", "0.5");
	return dojo.lang.getType(value);
};
dojo.lang.whatAmI.custom = {};
dojo.lang.getType = function (value) {
	try {
		if (dojo.lang.isArray(value)) {
			return "array";
		}
		if (dojo.lang.isFunction(value)) {
			return "function";
		}
		if (dojo.lang.isString(value)) {
			return "string";
		}
		if (dojo.lang.isNumber(value)) {
			return "number";
		}
		if (dojo.lang.isBoolean(value)) {
			return "boolean";
		}
		if (dojo.lang.isAlien(value)) {
			return "alien";
		}
		if (dojo.lang.isUndefined(value)) {
			return "undefined";
		}
		for (var name in dojo.lang.whatAmI.custom) {
			if (dojo.lang.whatAmI.custom[name](value)) {
				return name;
			}
		}
		if (dojo.lang.isObject(value)) {
			return "object";
		}
	}
	catch (e) {
	}
	return "unknown";
};
dojo.lang.isNumeric = function (value) {
	return (!isNaN(value) && isFinite(value) && (value != null) && !dojo.lang.isBoolean(value) && !dojo.lang.isArray(value) && !/^\s*$/.test(value));
};
dojo.lang.isBuiltIn = function (value) {
	return (dojo.lang.isArray(value) || dojo.lang.isFunction(value) || dojo.lang.isString(value) || dojo.lang.isNumber(value) || dojo.lang.isBoolean(value) || (value == null) || (value instanceof Error) || (typeof value == "error"));
};
dojo.lang.isPureObject = function (value) {
	return ((value != null) && dojo.lang.isObject(value) && value.constructor == Object);
};
dojo.lang.isOfType = function (value, type, keywordParameters) {
	var optional = false;
	if (keywordParameters) {
		optional = keywordParameters["optional"];
	}
	if (optional && ((value === null) || dojo.lang.isUndefined(value))) {
		return true;
	}
	if (dojo.lang.isArray(type)) {
		var arrayOfTypes = type;
		for (var i in arrayOfTypes) {
			var aType = arrayOfTypes[i];
			if (dojo.lang.isOfType(value, aType)) {
				return true;
			}
		}
		return false;
	} else {
		if (dojo.lang.isString(type)) {
			type = type.toLowerCase();
		}
		switch (type) {
		  case Array:
		  case "array":
			return dojo.lang.isArray(value);
		  case Function:
		  case "function":
			return dojo.lang.isFunction(value);
		  case String:
		  case "string":
			return dojo.lang.isString(value);
		  case Number:
		  case "number":
			return dojo.lang.isNumber(value);
		  case "numeric":
			return dojo.lang.isNumeric(value);
		  case Boolean:
		  case "boolean":
			return dojo.lang.isBoolean(value);
		  case Object:
		  case "object":
			return dojo.lang.isObject(value);
		  case "pureobject":
			return dojo.lang.isPureObject(value);
		  case "builtin":
			return dojo.lang.isBuiltIn(value);
		  case "alien":
			return dojo.lang.isAlien(value);
		  case "undefined":
			return dojo.lang.isUndefined(value);
		  case null:
		  case "null":
			return (value === null);
		  case "optional":
			dojo.deprecated("dojo.lang.isOfType(value, [type, \"optional\"])", "use dojo.lang.isOfType(value, type, {optional: true} ) instead", "0.5");
			return ((value === null) || dojo.lang.isUndefined(value));
		  default:
			if (dojo.lang.isFunction(type)) {
				return (value instanceof type);
			} else {
				dojo.raise("dojo.lang.isOfType() was passed an invalid type");
			}
		}
	}
	dojo.raise("If we get here, it means a bug was introduced above.");
};
dojo.lang.getObject = function (str) {
	var parts = str.split("."), i = 0, obj = dj_global;
	do {
		obj = obj[parts[i++]];
	} while (i < parts.length && obj);
	return (obj != dj_global) ? obj : null;
};
dojo.lang.doesObjectExist = function (str) {
	var parts = str.split("."), i = 0, obj = dj_global;
	do {
		obj = obj[parts[i++]];
	} while (i < parts.length && obj);
	return (obj && obj != dj_global);
};