Struts example source code file (common.js)

This example Struts source code file (common.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

get, get, json, json, no, none, none, object, object

The Struts common.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.io.common");
dojo.require("dojo.string");
dojo.require("dojo.lang.extras");
dojo.io.transports = [];
dojo.io.hdlrFuncNames = ["load", "error", "timeout"];
dojo.io.Request = function (url, mimetype, transport, changeUrl) {
	if ((arguments.length == 1) && (arguments[0].constructor == Object)) {
		this.fromKwArgs(arguments[0]);
	} else {
		this.url = url;
		if (mimetype) {
			this.mimetype = mimetype;
		}
		if (transport) {
			this.transport = transport;
		}
		if (arguments.length >= 4) {
			this.changeUrl = changeUrl;
		}
	}
};
dojo.lang.extend(dojo.io.Request, {url:"", mimetype:"text/plain", method:"GET", content:undefined, transport:undefined, changeUrl:undefined, formNode:undefined, sync:false, bindSuccess:false, useCache:false, preventCache:false, jsonFilter:function (value) {
	if ((this.mimetype == "text/json-comment-filtered") || (this.mimetype == "application/json-comment-filtered")) {
		var cStartIdx = value.indexOf("/*");
		var cEndIdx = value.lastIndexOf("*/");
		if ((cStartIdx == -1) || (cEndIdx == -1)) {
			dojo.debug("your JSON wasn't comment filtered!");
			return "";
		}
		return value.substring(cStartIdx + 2, cEndIdx);
	}
	dojo.debug("please consider using a mimetype of text/json-comment-filtered to avoid potential security issues with JSON endpoints");
	return value;
}, load:function (type, data, transportImplementation, kwArgs) {
}, error:function (type, error, transportImplementation, kwArgs) {
}, timeout:function (type, empty, transportImplementation, kwArgs) {
}, handle:function (type, data, transportImplementation, kwArgs) {
}, timeoutSeconds:0, abort:function () {
}, fromKwArgs:function (kwArgs) {
	if (kwArgs["url"]) {
		kwArgs.url = kwArgs.url.toString();
	}
	if (kwArgs["formNode"]) {
		kwArgs.formNode = dojo.byId(kwArgs.formNode);
	}
	if (!kwArgs["method"] && kwArgs["formNode"] && kwArgs["formNode"].method) {
		kwArgs.method = kwArgs["formNode"].method;
	}
	if (!kwArgs["handle"] && kwArgs["handler"]) {
		kwArgs.handle = kwArgs.handler;
	}
	if (!kwArgs["load"] && kwArgs["loaded"]) {
		kwArgs.load = kwArgs.loaded;
	}
	if (!kwArgs["changeUrl"] && kwArgs["changeURL"]) {
		kwArgs.changeUrl = kwArgs.changeURL;
	}
	kwArgs.encoding = dojo.lang.firstValued(kwArgs["encoding"], djConfig["bindEncoding"], "");
	kwArgs.sendTransport = dojo.lang.firstValued(kwArgs["sendTransport"], djConfig["ioSendTransport"], false);
	var isFunction = dojo.lang.isFunction;
	for (var x = 0; x < dojo.io.hdlrFuncNames.length; x++) {
		var fn = dojo.io.hdlrFuncNames[x];
		if (kwArgs[fn] && isFunction(kwArgs[fn])) {
			continue;
		}
		if (kwArgs["handle"] && isFunction(kwArgs["handle"])) {
			kwArgs[fn] = kwArgs.handle;
		}
	}
	dojo.lang.mixin(this, kwArgs);
}});
dojo.io.Error = function (msg, type, num) {
	this.message = msg;
	this.type = type || "unknown";
	this.number = num || 0;
};
dojo.io.transports.addTransport = function (name) {
	this.push(name);
	this[name] = dojo.io[name];
};
dojo.io.bind = function (request) {
	if (!(request instanceof dojo.io.Request)) {
		try {
			request = new dojo.io.Request(request);
		}
		catch (e) {
			dojo.debug(e);
		}
	}
	var tsName = "";
	if (request["transport"]) {
		tsName = request["transport"];
		if (!this[tsName]) {
			dojo.io.sendBindError(request, "No dojo.io.bind() transport with name '" + request["transport"] + "'.");
			return request;
		}
		if (!this[tsName].canHandle(request)) {
			dojo.io.sendBindError(request, "dojo.io.bind() transport with name '" + request["transport"] + "' cannot handle this type of request.");
			return request;
		}
	} else {
		for (var x = 0; x < dojo.io.transports.length; x++) {
			var tmp = dojo.io.transports[x];
			if ((this[tmp]) && (this[tmp].canHandle(request))) {
				tsName = tmp;
				break;
			}
		}
		if (tsName == "") {
			dojo.io.sendBindError(request, "None of the loaded transports for dojo.io.bind()" + " can handle the request.");
			return request;
		}
	}
	this[tsName].bind(request);
	request.bindSuccess = true;
	return request;
};
dojo.io.sendBindError = function (request, message) {
	if ((typeof request.error == "function" || typeof request.handle == "function") && (typeof setTimeout == "function" || typeof setTimeout == "object")) {
		var errorObject = new dojo.io.Error(message);
		setTimeout(function () {
			request[(typeof request.error == "function") ? "error" : "handle"]("error", errorObject, null, request);
		}, 50);
	} else {
		dojo.raise(message);
	}
};
dojo.io.queueBind = function (request) {
	if (!(request instanceof dojo.io.Request)) {
		try {
			request = new dojo.io.Request(request);
		}
		catch (e) {
			dojo.debug(e);
		}
	}
	var oldLoad = request.load;
	request.load = function () {
		dojo.io._queueBindInFlight = false;
		var ret = oldLoad.apply(this, arguments);
		dojo.io._dispatchNextQueueBind();
		return ret;
	};
	var oldErr = request.error;
	request.error = function () {
		dojo.io._queueBindInFlight = false;
		var ret = oldErr.apply(this, arguments);
		dojo.io._dispatchNextQueueBind();
		return ret;
	};
	dojo.io._bindQueue.push(request);
	dojo.io._dispatchNextQueueBind();
	return request;
};
dojo.io._dispatchNextQueueBind = function () {
	if (!dojo.io._queueBindInFlight) {
		dojo.io._queueBindInFlight = true;
		if (dojo.io._bindQueue.length > 0) {
			dojo.io.bind(dojo.io._bindQueue.shift());
		} else {
			dojo.io._queueBindInFlight = false;
		}
	}
};
dojo.io._bindQueue = [];
dojo.io._queueBindInFlight = false;
dojo.io.argsFromMap = function (map, encoding, last) {
	var enc = /utf/i.test(encoding || "") ? encodeURIComponent : dojo.string.encodeAscii;
	var mapped = [];
	var control = new Object();
	for (var name in map) {
		var domap = function (elt) {
			var val = enc(name) + "=" + enc(elt);
			mapped[(last == name) ? "push" : "unshift"](val);
		};
		if (!control[name]) {
			var value = map[name];
			if (dojo.lang.isArray(value)) {
				dojo.lang.forEach(value, domap);
			} else {
				domap(value);
			}
		}
	}
	return mapped.join("&");
};
dojo.io.setIFrameSrc = function (iframe, src, replace) {
	try {
		var r = dojo.render.html;
		if (!replace) {
			if (r.safari) {
				iframe.location = src;
			} else {
				frames[iframe.name].location = src;
			}
		} else {
			var idoc;
			if (r.ie) {
				idoc = iframe.contentWindow.document;
			} else {
				if (r.safari) {
					idoc = iframe.document;
				} else {
					idoc = iframe.contentWindow;
				}
			}
			if (!idoc) {
				iframe.location = src;
				return;
			} else {
				idoc.location.replace(src);
			}
		}
	}
	catch (e) {
		dojo.debug(e);
		dojo.debug("setIFrameSrc: " + e);
	}
};