User Account Registration/Login

This example demonstrates a simple Union user-account management panel.

Note: this example focuses on the Reactor API, and therefore shows only the bare minimum code required to create an account-management user interface.

The user-account example above demonstrates the following Reactor techniques:

Creating a user account
Removing a user account
Logging into a user account
Logging off of a user account
Setting a persistent client attribute that is saved to the server
Automatically reconnecting to Union Server after a disconnection

The Code

Here's the code for the user-account management panel:

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package {
import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.text.TextField;
import flash.text.TextFieldType;
import flash.text.TextFormat;
import flash.text.TextFormatAlign;

import net.user1.reactor.AccountEvent;
import net.user1.reactor.AccountManager;
import net.user1.reactor.AccountManagerEvent;
import net.user1.reactor.AttributeEvent;
import net.user1.reactor.ClientEvent;
import net.user1.reactor.IClient;
import net.user1.reactor.Reactor;
import net.user1.reactor.ReactorEvent;
import net.user1.reactor.Status;
import net.user1.reactor.UserAccount;

public class UnionUserLogin extends Sprite {

//==============================================================================
// VARIABLES
//==============================================================================
protected var useridInput:TextField;
protected var passwordInput:TextField;
protected var createAccountButton:Sprite;
protected var removeAccountButton:Sprite;
protected var loginButton:Sprite;
protected var logoffButton:Sprite;
protected var setAttributeButton:Sprite;
protected var output:TextField;

protected var reactor:Reactor;
protected var accountManager:AccountManager;

//==============================================================================
// CONSTRUCTOR
//==============================================================================

public function UnionUserLogin () {
// Create user interface
createUI();

// Create Reactor
reactor = new Reactor();
reactor.getLog().setLevel("DEBUG");
reactor.getConnectionMonitor().setAutoReconnectFrequency(10000);
reactor.addEventListener(ReactorEvent.READY, readyListener);
reactor.addEventListener(ReactorEvent.CLOSE, closeListener);

// Register account manager listeners
accountManager = reactor.getAccountManager();
accountManager.addEventListener(AccountManagerEvent.CREATE_ACCOUNT_RESULT,
createAccountResultListener);
accountManager.addEventListener(AccountManagerEvent.REMOVE_ACCOUNT_RESULT,
removeAccountResultListener);
accountManager.addEventListener(AccountEvent.LOGIN_RESULT,
loginResultListener);
accountManager.addEventListener(AccountEvent.LOGIN,
loginListener);
accountManager.addEventListener(AccountEvent.LOGOFF_RESULT,
logoffResultListener);
accountManager.addEventListener(AccountEvent.LOGOFF,
logoffListener);

// Connect to Union
reactor.connect("tryunion.com", 80);
}

//==============================================================================
// REACTOR LISTENERS
//==============================================================================

protected function readyListener (e:ReactorEvent):void {
out("Connected to Union.");
}

protected function closeListener (e:ReactorEvent):void {
out("Disconnected.");
}

//==============================================================================
// ACCOUNT MANAGER EVENT LISTENERS
//==============================================================================

protected function createAccountResultListener (e:AccountManagerEvent):void {
out("Create account result for [" + e.getUserID() + "]: " + e.getStatus());
}

protected function removeAccountResultListener (e:AccountManagerEvent):void {
out("Remove account result for [" + e.getUserID() + "]: " + e.getStatus());
}

//==============================================================================
// ACCOUNT EVENT LISTENERS
//==============================================================================

protected function loginResultListener (e:AccountEvent):void {
out("Login result for [" + e.getUserID() + "]: " + e.getStatus());
}

protected function loginListener (e:AccountEvent):void {
var hairColour:String;
// Display a login message
out("Account logged in [" + e.getUserID() + "]");

// Register for attribute assignment result
e.getAccount().addEventListener(AttributeEvent.SET_RESULT,
setAttributeResultListener);

// Retrieve the value of the hairColour attribute
hairColour = e.getAccount().getAttribute("hairColour");
if (hairColour != null) {
// Display the user's saved hair colour
out("Loaded user attribute hairColour. Value: " + hairColour);
} else {
// Ask the user to saved a hair colour
out("User attribute hairColour is not yet in the database.");
out("To save your hair colour, click 'Set Hair Colour'.");
out("Next time you login, your hair colour will be loaded automatically.");
}
}

protected function logoffResultListener (e:AccountEvent):void {
out("Logoff result for [" + e.getUserID() + "]: " + e.getStatus());
}

protected function logoffListener (e:AccountEvent):void {
out("Account logged off [" + e.getUserID() + "]");
// Unregister for attribute assignment result
e.getAccount().removeEventListener(AttributeEvent.SET_RESULT,
setAttributeResultListener);
}

//==============================================================================
// CLIENT EVENT LISTENERS
//==============================================================================

protected function setAttributeResultListener (e:AttributeEvent):void {
if (e.getChangedAttr().name == "hairColour") {
out("Set hair colour result: " + e.getStatus());
}
}

//==============================================================================
// UI CONTROL
//==============================================================================

public function out (message:String):void {
output.appendText(message + "\n");
output.scrollV = output.maxScrollV;
}

//==============================================================================
// UI LISTENERS
//==============================================================================

protected function createAccountClickListener (e:MouseEvent):void {
accountManager.createAccount(useridInput.text,
passwordInput.text);
}

protected function removeAccountClickListener (e:MouseEvent):void {
accountManager.removeAccount(useridInput.text,
passwordInput.text);
}

protected function loginClickListener (e:MouseEvent):void {
accountManager.login(useridInput.text,
passwordInput.text);
}

protected function logoffClickListener (e:MouseEvent):void {
accountManager.logoff(useridInput.text,
passwordInput.text);
}

protected function setAttributeClickListener (e:MouseEvent):void {
var selfAccount:UserAccount = accountManager.selfAccount();
if (selfAccount && selfAccount.isLoggedIn()) {
selfAccount.setAttribute("hairColour", "green");
} else {
out("Please login before setting the user's hair colour.");
}
}

//==============================================================================
// UI CREATION
//==============================================================================

protected function createUI ():void {
useridInput = createInputField("ENTER USERID HERE");
passwordInput = createInputField("ENTER PASSWORD HERE");
createAccountButton = createButton("Create Account",
createAccountClickListener);
removeAccountButton = createButton("Remove Account",
removeAccountClickListener);
loginButton = createButton("Login", loginClickListener);
logoffButton = createButton("Logoff", logoffClickListener);
setAttributeButton = createButton("Set Hair Colour",
setAttributeClickListener);
output = createOutputField();

useridInput.y = 10;
passwordInput.y = 35;
createAccountButton.x = 50;
createAccountButton.y = 60;
removeAccountButton.x = 170;
removeAccountButton.y = 60;
loginButton.x = 50;
loginButton.y = 90;
logoffButton.x = 170;
logoffButton.y = 90;
setAttributeButton.x = 105;
setAttributeButton.y = 120;
output.y = 150;

addChild(useridInput);
addChild(passwordInput);
addChild(createAccountButton);
addChild(removeAccountButton);
addChild(loginButton);
addChild(logoffButton);
addChild(setAttributeButton);
addChild(output);
}

protected function createInputField (text:String):TextField {
var t:TextField = new TextField();
t.text = text;
t.type = TextFieldType.INPUT;
t.x = 10;
t.width = 350;
t.height = 20;
t.background = true;
t.border = true;
return t;
}

protected function createOutputField ():TextField {
var t:TextField = new TextField();
t.x = 10;
t.width = 350;
t.height = 165;
t.background = true;
t.border = true;
return t;
}

protected function createButton (label:String, clickListener:Function):Sprite {
var t:TextField = new TextField();
t.text = label;
t.x = 10;
t.width = 110;
t.height = 20;
t.background = true;
t.border = true;
t.selectable = false;
var buttonFormat:TextFormat = new TextFormat();
buttonFormat.bold = true;
buttonFormat.align = TextFormatAlign.CENTER;
buttonFormat.font = "_sans";
t.setTextFormat(buttonFormat);
var s:Sprite = new Sprite;
s.buttonMode = true;
s.mouseChildren = false;
s.addEventListener(MouseEvent.CLICK, clickListener);
s.addChild(t);
return s;
}
}
}