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Struts example source code file (browser.js)

This example Struts source code file (browser.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

activexobject, activexobject, array, array, invalid, invalid, javascript, universalxpconnect, universalxpconnect

The Struts browser.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.storage.browser");
dojo.require("dojo.storage");
dojo.require("dojo.flash");
dojo.require("dojo.json");
dojo.require("dojo.uri.*");
dojo.storage.browser.FileStorageProvider = function () {
};
dojo.inherits(dojo.storage.browser.FileStorageProvider, dojo.storage);
dojo.storage.browser.FileStorageProvider._KEY_INDEX_FILENAME = "__dojoAllKeys";
dojo.storage.browser.FileStorageProvider._APPLET_ID = "__dojoFileJavaObj";
dojo.lang.extend(dojo.storage.browser.FileStorageProvider, {namespace:"default", initialized:false, _available:null, _statusHandler:null, _keyIndex:new Array(), initialize:function () {
	if (djConfig["disableFileStorage"] == true) {
		return;
	}
	this._loadKeyIndex();
	this.initialized = true;
	dojo.storage.manager.loaded();
}, isAvailable:function () {
	this._available = false;
	var protocol = window.location.protocol;
	if (protocol.indexOf("file") != -1 || protocol.indexOf("chrome") != -1) {
		this._available = this._isAvailableXPCOM();
		if (this._available == false) {
			this._available = this._isAvailableActiveX();
		}
	}
	return this._available;
}, put:function (key, value, resultsHandler) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	this._statusHandler = resultsHandler;
	try {
		this._save(key, value);
		resultsHandler.call(null, dojo.storage.SUCCESS, key);
	}
	catch (e) {
		this._statusHandler.call(null, dojo.storage.FAILED, key, e.toString());
	}
}, get:function (key) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	var results = this._load(key);
	return results;
}, getKeys:function () {
	return this._keyIndex;
}, hasKey:function (key) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	this._loadKeyIndex();
	var exists = false;
	for (var i = 0; i < this._keyIndex.length; i++) {
		if (this._keyIndex[i] == key) {
			exists = true;
		}
	}
	return exists;
}, clear:function () {
	this._loadKeyIndex();
	var keyIndex = new Array();
	for (var i = 0; i < this._keyIndex.length; i++) {
		keyIndex[keyIndex.length] = new String(this._keyIndex[i]);
	}
	for (var i = 0; i < keyIndex.length; i++) {
		this.remove(keyIndex[i]);
	}
}, remove:function (key) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	this._loadKeyIndex();
	for (var i = 0; i < this._keyIndex.length; i++) {
		if (this._keyIndex[i] == key) {
			this._keyIndex.splice(i, 1);
			break;
		}
	}
	this._save(dojo.storage.browser.FileStorageProvider._KEY_INDEX_FILENAME, this._keyIndex, false);
	var fullPath = this._getPagePath() + key + ".txt";
	if (this._isAvailableXPCOM()) {
		this._removeXPCOM(fullPath);
	} else {
		if (this._isAvailableActiveX()) {
			this._removeActiveX(fullPath);
		}
	}
}, isPermanent:function () {
	return true;
}, getMaximumSize:function () {
	return dojo.storage.SIZE_NO_LIMIT;
}, hasSettingsUI:function () {
	return false;
}, showSettingsUI:function () {
	dojo.raise(this.getType() + " does not support a storage settings user-interface");
}, hideSettingsUI:function () {
	dojo.raise(this.getType() + " does not support a storage settings user-interface");
}, getType:function () {
	return "dojo.storage.browser.FileStorageProvider";
}, _save:function (key, value, updateKeyIndex) {
	if (typeof updateKeyIndex == "undefined") {
		updateKeyIndex = true;
	}
	if (dojo.lang.isString(value) == false) {
		value = dojo.json.serialize(value);
		value = "/* JavaScript */\n" + value + "\n\n";
	}
	var fullPath = this._getPagePath() + key + ".txt";
	if (this._isAvailableXPCOM()) {
		this._saveFileXPCOM(fullPath, value);
	} else {
		if (this._isAvailableActiveX()) {
			this._saveFileActiveX(fullPath, value);
		}
	}
	if (updateKeyIndex) {
		this._updateKeyIndex(key);
	}
}, _load:function (key) {
	var fullPath = this._getPagePath() + key + ".txt";
	var results = null;
	if (this._isAvailableXPCOM()) {
		results = this._loadFileXPCOM(fullPath);
	} else {
		if (this._isAvailableActiveX()) {
			results = this._loadFileActiveX(fullPath);
		} else {
			if (this._isAvailableJava()) {
				results = this._loadFileJava(fullPath);
			}
		}
	}
	if (results == null) {
		return null;
	}
	if (!dojo.lang.isUndefined(results) && results != null && /^\/\* JavaScript \*\//.test(results)) {
		results = dojo.json.evalJson(results);
	}
	return results;
}, _updateKeyIndex:function (key) {
	this._loadKeyIndex();
	var alreadyAdded = false;
	for (var i = 0; i < this._keyIndex.length; i++) {
		if (this._keyIndex[i] == key) {
			alreadyAdded = true;
			break;
		}
	}
	if (alreadyAdded == false) {
		this._keyIndex[this._keyIndex.length] = key;
	}
	this._save(dojo.storage.browser.FileStorageProvider._KEY_INDEX_FILENAME, this._keyIndex, false);
}, _loadKeyIndex:function () {
	var indexContents = this._load(dojo.storage.browser.FileStorageProvider._KEY_INDEX_FILENAME);
	if (indexContents == null) {
		this._keyIndex = new Array();
	} else {
		this._keyIndex = indexContents;
	}
}, _saveFileXPCOM:function (filename, value) {
	try {
		netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
		var f = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
		f.initWithPath(filename);
		var ouputStream = Components.classes["@mozilla.org/network/file-output-stream;1"].createInstance(Components.interfaces.nsIFileOutputStream);
		ouputStream.init(f, 32 | 4 | 8, 256 + 128, null);
		ouputStream.write(value, value.length);
		ouputStream.close();
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._saveFileXPCOM(): " + msg);
	}
}, _loadFileXPCOM:function (filename) {
	try {
		netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
		var f = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
		f.initWithPath(filename);
		if (f.exists() == false) {
			return null;
		}
		var inp = Components.classes["@mozilla.org/network/file-input-stream;1"].createInstance(Components.interfaces.nsIFileInputStream);
		inp.init(f, 1, 4, null);
		var inputStream = Components.classes["@mozilla.org/scriptableinputstream;1"].createInstance(Components.interfaces.nsIScriptableInputStream);
		inputStream.init(inp);
		var results = inputStream.read(inputStream.available());
		return results;
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._loadFileXPCOM(): " + msg);
	}
	return null;
}, _saveFileActiveX:function (filename, value) {
	try {
		var fileSystem = new ActiveXObject("Scripting.FileSystemObject");
		var f = fileSystem.OpenTextFile(filename, 2, true);
		f.Write(value);
		f.Close();
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._saveFileActiveX(): " + msg);
	}
}, _loadFileActiveX:function (filename) {
	try {
		var fileSystem = new ActiveXObject("Scripting.FileSystemObject");
		if (fileSystem.FileExists(filename) == false) {
			return null;
		}
		var f = fileSystem.OpenTextFile(filename, 1);
		var results = f.ReadAll();
		f.Close();
		return results;
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._loadFileActiveX(): " + msg);
	}
}, _saveFileJava:function (filename, value) {
	try {
		var applet = dojo.byId(dojo.storage.browser.FileStorageProvider._APPLET_ID);
		applet.save(filename, value);
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._saveFileJava(): " + msg);
	}
}, _loadFileJava:function (filename) {
	try {
		var applet = dojo.byId(dojo.storage.browser.FileStorageProvider._APPLET_ID);
		var results = applet.load(filename);
		return results;
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._loadFileJava(): " + msg);
	}
}, _isAvailableActiveX:function () {
	try {
		if (window.ActiveXObject) {
			var fileSystem = new window.ActiveXObject("Scripting.FileSystemObject");
			return true;
		}
	}
	catch (e) {
		dojo.debug(e);
	}
	return false;
}, _isAvailableXPCOM:function () {
	try {
		if (window.Components) {
			netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
			Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
			return true;
		}
	}
	catch (e) {
		dojo.debug(e);
	}
	return false;
}, _isAvailableJava:function () {
	try {
		if (dojo.render.html.safari == true || dojo.render.html.opera == true()) {
			if (navigator.javaEnabled() == true) {
				return true;
			}
		}
	}
	catch (e) {
		dojo.debug(e);
	}
	return false;
}, _getPagePath:function () {
	var path = window.location.pathname;
	if (/\.html?$/i.test(path)) {
		path = path.replace(/(?:\/|\\)?[^\.\/\\]*\.html?$/, "");
	}
	if (/^\/?[a-z]+\:/i.test(path)) {
		path = path.replace(/^\/?/, "");
		path = path.replace(/\//g, "\\");
	} else {
		if (/^[\/\\]{2,3}[^\/]/.test(path)) {
			path = path.replace(/^[\/\\]{2,3}/, "");
			path = path.replace(/\//g, "\\");
			path = "\\\\" + path;
		}
	}
	if (/\/$/.test(path) == false && /\\$/.test(path) == false) {
		if (/\//.test(path)) {
			path += "/";
		} else {
			path += "\\";
		}
	}
	path = unescape(path);
	return path;
}, _removeXPCOM:function (filename) {
	try {
		netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
		var f = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
		f.initWithPath(filename);
		if (f.exists() == false || f.isDirectory()) {
			return;
		}
		if (f.isFile()) {
			f.remove(false);
		}
	}
	catch (e) {
		dojo.raise("dojo.storage.browser.FileStorageProvider.remove(): " + e.toString());
	}
}, _removeActiveX:function (filename) {
	try {
		var fileSystem = new ActiveXObject("Scripting.FileSystemObject");
		fileSystem.DeleteFile(filename);
	}
	catch (e) {
		dojo.raise("dojo.storage.browser.FileStorageProvider.remove(): " + e.toString());
	}
}, _removeJava:function (filename) {
	try {
		var applet = dojo.byId(dojo.storage.browser.FileStorageProvider._APPLET_ID);
		applet.remove(filename);
	}
	catch (e) {
		var msg = e.toString();
		if (e.name && e.message) {
			msg = e.name + ": " + e.message;
		}
		dojo.raise("dojo.storage.browser.FileStorageProvider._removeJava(): " + msg);
	}
}, _writeApplet:function () {
	var archive = dojo.uri.moduleUri("dojo", "../DojoFileStorageProvider.jar").toString();
	var tag = "<applet " + "id='" + dojo.storage.browser.FileStorageProvider._APPLET_ID + "' " + "style='position: absolute; top: -500px; left: -500px; width: 1px; height: 1px;' " + "code='DojoFileStorageProvider.class' " + "archive='" + archive + "' " + "width='1' " + "height='1' " + ">" + "";
	document.writeln(tag);
}});
dojo.storage.browser.WhatWGStorageProvider = function () {
};
dojo.inherits(dojo.storage.browser.WhatWGStorageProvider, dojo.storage);
dojo.lang.extend(dojo.storage.browser.WhatWGStorageProvider, {namespace:"default", initialized:false, _domain:null, _available:null, _statusHandler:null, initialize:function () {
	if (djConfig["disableWhatWGStorage"] == true) {
		return;
	}
	this._domain = location.hostname;
	this.initialized = true;
	dojo.storage.manager.loaded();
}, isAvailable:function () {
	try {
		var myStorage = globalStorage[location.hostname];
	}
	catch (e) {
		this._available = false;
		return this._available;
	}
	this._available = true;
	return this._available;
}, put:function (key, value, resultsHandler) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	this._statusHandler = resultsHandler;
	if (dojo.lang.isString(value)) {
		value = "string:" + value;
	} else {
		value = dojo.json.serialize(value);
	}
	window.addEventListener("storage", function (evt) {
		resultsHandler.call(null, dojo.storage.SUCCESS, key);
	}, false);
	try {
		var myStorage = globalStorage[this._domain];
		myStorage.setItem(key, value);
	}
	catch (e) {
		this._statusHandler.call(null, dojo.storage.FAILED, key, e.toString());
	}
}, get:function (key) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	var myStorage = globalStorage[this._domain];
	var results = myStorage.getItem(key);
	if (results == null) {
		return null;
	}
	results = results.value;
	if (!dojo.lang.isUndefined(results) && results != null && /^string:/.test(results)) {
		results = results.substring("string:".length);
	} else {
		results = dojo.json.evalJson(results);
	}
	return results;
}, getKeys:function () {
	var myStorage = globalStorage[this._domain];
	var keysArray = new Array();
	for (i = 0; i < myStorage.length; i++) {
		keysArray[i] = myStorage.key(i);
	}
	return keysArray;
}, clear:function () {
	var myStorage = globalStorage[this._domain];
	var keys = new Array();
	for (var i = 0; i < myStorage.length; i++) {
		keys[keys.length] = myStorage.key(i);
	}
	for (var i = 0; i < keys.length; i++) {
		myStorage.removeItem(keys[i]);
	}
}, remove:function (key) {
	var myStorage = globalStorage[this._domain];
	myStorage.removeItem(key);
}, isPermanent:function () {
	return true;
}, getMaximumSize:function () {
	return dojo.storage.SIZE_NO_LIMIT;
}, hasSettingsUI:function () {
	return false;
}, showSettingsUI:function () {
	dojo.raise(this.getType() + " does not support a storage settings user-interface");
}, hideSettingsUI:function () {
	dojo.raise(this.getType() + " does not support a storage settings user-interface");
}, getType:function () {
	return "dojo.storage.browser.WhatWGProvider";
}});
dojo.storage.browser.FlashStorageProvider = function () {
};
dojo.inherits(dojo.storage.browser.FlashStorageProvider, dojo.storage);
dojo.lang.extend(dojo.storage.browser.FlashStorageProvider, {namespace:"default", initialized:false, _available:null, _statusHandler:null, initialize:function () {
	if (djConfig["disableFlashStorage"] == true) {
		return;
	}
	var loadedListener = function () {
		dojo.storage._flashLoaded();
	};
	dojo.flash.addLoadedListener(loadedListener);
	var swfloc6 = dojo.uri.moduleUri("dojo", "../Storage_version6.swf").toString();
	var swfloc8 = dojo.uri.moduleUri("dojo", "../Storage_version8.swf").toString();
	dojo.flash.setSwf({flash6:swfloc6, flash8:swfloc8, visible:false});
}, isAvailable:function () {
	if (djConfig["disableFlashStorage"] == true) {
		this._available = false;
	} else {
		this._available = true;
	}
	return this._available;
}, put:function (key, value, resultsHandler) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	this._statusHandler = resultsHandler;
	if (dojo.lang.isString(value)) {
		value = "string:" + value;
	} else {
		value = dojo.json.serialize(value);
	}
	dojo.flash.comm.put(key, value, this.namespace);
}, get:function (key) {
	if (this.isValidKey(key) == false) {
		dojo.raise("Invalid key given: " + key);
	}
	var results = dojo.flash.comm.get(key, this.namespace);
	if (results == "") {
		return null;
	}
	if (!dojo.lang.isUndefined(results) && results != null && /^string:/.test(results)) {
		results = results.substring("string:".length);
	} else {
		results = dojo.json.evalJson(results);
	}
	return results;
}, getKeys:function () {
	var results = dojo.flash.comm.getKeys(this.namespace);
	if (results == "") {
		return [];
	}
	return results.split(",");
}, clear:function () {
	dojo.flash.comm.clear(this.namespace);
}, remove:function (key) {
	dojo.unimplemented("dojo.storage.browser.FlashStorageProvider.remove");
}, isPermanent:function () {
	return true;
}, getMaximumSize:function () {
	return dojo.storage.SIZE_NO_LIMIT;
}, hasSettingsUI:function () {
	return true;
}, showSettingsUI:function () {
	dojo.flash.comm.showSettings();
	dojo.flash.obj.setVisible(true);
	dojo.flash.obj.center();
}, hideSettingsUI:function () {
	dojo.flash.obj.setVisible(false);
	if (dojo.storage.onHideSettingsUI != null && !dojo.lang.isUndefined(dojo.storage.onHideSettingsUI)) {
		dojo.storage.onHideSettingsUI.call(null);
	}
}, getType:function () {
	return "dojo.storage.browser.FlashStorageProvider";
}, _flashLoaded:function () {
	this._initialized = true;
	dojo.storage.manager.loaded();
}, _onStatus:function (statusResult, key) {
	var ds = dojo.storage;
	var dfo = dojo.flash.obj;
	if (statusResult == ds.PENDING) {
		dfo.center();
		dfo.setVisible(true);
	} else {
		dfo.setVisible(false);
	}
	if ((!dj_undef("_statusHandler", ds)) && (ds._statusHandler != null)) {
		ds._statusHandler.call(null, statusResult, key);
	}
}});
dojo.storage.manager.register("dojo.storage.browser.FileStorageProvider", new dojo.storage.browser.FileStorageProvider());
dojo.storage.manager.register("dojo.storage.browser.WhatWGStorageProvider", new dojo.storage.browser.WhatWGStorageProvider());
dojo.storage.manager.register("dojo.storage.browser.FlashStorageProvider", new dojo.storage.browser.FlashStorageProvider());
dojo.storage.manager.initialize();

Other Struts examples (source code examples)

Here is a short list of links related to this Struts browser.js source code file:

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