From dd028bec3822d1d9c28c35d599d687e038c7705f Mon Sep 17 00:00:00 2001
From: wei <>
Date: Thu, 4 Jan 2007 11:23:26 +0000
Subject: Add chat demo and tutorial.

---
 demos/chat/protected/.htaccess                     |   1 +
 demos/chat/protected/App_Code/ChatBufferRecord.php |  64 ++++++++++++++++
 demos/chat/protected/App_Code/ChatUserManager.php  |  63 ++++++++++++++++
 demos/chat/protected/App_Code/ChatUserRecord.php   |  41 +++++++++++
 demos/chat/protected/App_Code/chat.db              | Bin 0 -> 4096 bytes
 demos/chat/protected/application.xml               |  24 ++++++
 demos/chat/protected/pages/Home.page               |  51 +++++++++++++
 demos/chat/protected/pages/Home.php                |  56 ++++++++++++++
 demos/chat/protected/pages/Login.page              |  35 +++++++++
 demos/chat/protected/pages/Login.php               |  40 ++++++++++
 demos/chat/protected/pages/config.xml              |  15 ++++
 demos/chat/protected/pages/send.gif                | Bin 0 -> 993 bytes
 demos/chat/protected/pages/send.png                | Bin 0 -> 32586 bytes
 demos/chat/protected/pages/style.css               |  82 +++++++++++++++++++++
 14 files changed, 472 insertions(+)
 create mode 100644 demos/chat/protected/.htaccess
 create mode 100644 demos/chat/protected/App_Code/ChatBufferRecord.php
 create mode 100644 demos/chat/protected/App_Code/ChatUserManager.php
 create mode 100644 demos/chat/protected/App_Code/ChatUserRecord.php
 create mode 100644 demos/chat/protected/App_Code/chat.db
 create mode 100644 demos/chat/protected/application.xml
 create mode 100644 demos/chat/protected/pages/Home.page
 create mode 100644 demos/chat/protected/pages/Home.php
 create mode 100644 demos/chat/protected/pages/Login.page
 create mode 100644 demos/chat/protected/pages/Login.php
 create mode 100644 demos/chat/protected/pages/config.xml
 create mode 100644 demos/chat/protected/pages/send.gif
 create mode 100644 demos/chat/protected/pages/send.png
 create mode 100644 demos/chat/protected/pages/style.css

(limited to 'demos/chat/protected')

diff --git a/demos/chat/protected/.htaccess b/demos/chat/protected/.htaccess
new file mode 100644
index 00000000..3418e55a
--- /dev/null
+++ b/demos/chat/protected/.htaccess
@@ -0,0 +1 @@
+deny from all
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/ChatBufferRecord.php b/demos/chat/protected/App_Code/ChatBufferRecord.php
new file mode 100644
index 00000000..cf3c651f
--- /dev/null
+++ b/demos/chat/protected/App_Code/ChatBufferRecord.php
@@ -0,0 +1,64 @@
+<?php
+
+class ChatBufferRecord extends TActiveRecord
+{
+	public $id;
+	public $for_user;
+	public $from_user;
+	public $message;
+	private $_created_on;
+
+	public static $_tablename='chat_buffer';
+
+	public function getCreated_On()
+	{
+		if($this->_created_on === null)
+			$this->_created_on = time();
+		return $this->_created_on;
+	}
+
+	public function setCreated_On($value)
+	{
+		$this->_created_on = $value;
+	}
+
+	public static function finder()
+	{
+		return parent::getRecordFinder('ChatBufferRecord');
+	}
+
+	public function saveMessage()
+	{
+		foreach(ChatUserRecord::finder()->findAll() as $user)
+		{
+			$message = new self;
+			$message->for_user = $user->username;
+			$message->from_user = $this->from_user;
+			$message->message = $this->message;
+			$message->save();
+			if($user->username == $this->from_user)
+			{
+				$user->last_activity = time(); //update the last activity;
+				$user->save();
+			}
+		}
+	}
+
+	public function getUserMessages($user)
+	{
+		$content = '';
+		foreach($this->findAll('for_user = ?', $user) as $message)
+			$content .= $this->formatMessage($message);
+		$this->deleteAll('for_user = ? OR created_on < ?', $user, time() - 300); //5 min inactivity
+		return $content;
+	}
+
+	protected function formatMessage($message)
+	{
+		$user = htmlspecialchars($message->from_user);
+		$content = htmlspecialchars($message->message);
+		return "<div class=\"message\"><strong>{$user}:</strong> <span>{$content}</span></div>";
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/ChatUserManager.php b/demos/chat/protected/App_Code/ChatUserManager.php
new file mode 100644
index 00000000..f8fe09cc
--- /dev/null
+++ b/demos/chat/protected/App_Code/ChatUserManager.php
@@ -0,0 +1,63 @@
+<?php
+
+class ChatUserManager extends TModule implements IUserManager
+{
+	/**
+	 * @return string name for a guest user.
+	 */
+	public function getGuestName()
+	{
+		return 'Guest';
+	}
+	
+	/**
+	 * Returns a user instance given the user name.
+	 * @param string user name, null if it is a guest.
+	 * @return TUser the user instance
+	 */
+	public function getUser($username=null)
+	{
+		$user=new TUser($this);
+		$user->setIsGuest(true);		
+		if($username !== null)
+		{
+			$user->setIsGuest(false);
+			$user->setName($username);
+			$user->setRoles(array('normal'));
+		}
+		return $user;
+	}
+	
+	/**
+	 * Add a new user to the database.
+	 * @param string username.
+	 */
+	public function addNewUser($username)
+	{
+		$user = new ChatUserRecord();
+		$user->username = $username;
+		$user->save();
+	}
+
+	/**
+	 * @return boolean true if username already exists, false otherwise.
+	 */
+	public function usernameExists($username)
+	{
+		return ChatUserRecord::finder()->findByUsername($username) instanceof ChatUserRecord;
+	}
+
+	/**
+	 * Validates if the username exists.
+	 * @param string user name
+	 * @param string password
+	 * @return boolean true if validation is successful, false otherwise.
+	 */
+	public function validateUser($username,$password)
+	{
+		return $this->usernameExists($username);
+	}
+}
+
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/ChatUserRecord.php b/demos/chat/protected/App_Code/ChatUserRecord.php
new file mode 100644
index 00000000..9bfb11cd
--- /dev/null
+++ b/demos/chat/protected/App_Code/ChatUserRecord.php
@@ -0,0 +1,41 @@
+<?php
+
+class ChatUserRecord extends TActiveRecord
+{
+	public $username;
+	private $_last_activity;
+
+	public static $_tablename='chat_users';
+
+	public function getLast_Activity()
+	{
+		if($this->_last_activity === null)
+			$this->_last_activity = time();
+		return $this->_last_activity;
+	}
+
+	public function setLast_Activity($value)
+	{
+		$this->_last_activity = $value;
+	}
+
+	public static function finder()
+	{
+		return parent::getRecordFinder('ChatUserRecord');
+	}
+
+	public function getUserList()
+	{
+		$this->deleteAll('last_activity < ?', time()-300); //5 min inactivity
+		$content = '<ul>';
+		foreach($this->findAll() as $user)
+		{
+			$content .= '<li>'.htmlspecialchars($user->username).'</li>';
+		}
+		$content .= '</ul>';
+
+		return $content;
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/App_Code/chat.db b/demos/chat/protected/App_Code/chat.db
new file mode 100644
index 00000000..f8e3660f
Binary files /dev/null and b/demos/chat/protected/App_Code/chat.db differ
diff --git a/demos/chat/protected/application.xml b/demos/chat/protected/application.xml
new file mode 100644
index 00000000..7153d5af
--- /dev/null
+++ b/demos/chat/protected/application.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<application id="Chat" Mode="Debug">
+
+  <paths>
+	<using namespace="Application.App_Code.*" />
+	<using namespace="System.Data.*" />
+	<using namespace="System.Data.ActiveRecord.*" />
+	<using namespace="System.Security.*" />
+	<using namespace="System.Web.UI.ActiveControls.*" />
+  </paths>
+
+  <modules>
+	<!-- active record database connection configuration -->
+<!--	<module class="TActiveRecordConfig" EnableCache="true"
+		Database.ConnectionString="mysql:host=localhost;dbname=prado_chat"
+		Database.Username="prado"
+		Database.Password="prado" />
+-->
+  	<module class="TActiveRecordConfig" EnableCache="true"
+		Database.ConnectionString="sqlite:protected/App_Code/chat.db" />
+
+  </modules>
+ 
+</application>
\ No newline at end of file
diff --git a/demos/chat/protected/pages/Home.page b/demos/chat/protected/pages/Home.page
new file mode 100644
index 00000000..b896cd28
--- /dev/null
+++ b/demos/chat/protected/pages/Home.page
@@ -0,0 +1,51 @@
+<!doctype html public "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+	
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+	<title>Prado Chat Demo</title>
+	<link rel="stylesheet" type="text/css" href="<%~ style.css %>" />
+</head>
+
+<body>
+<com:TForm>
+<h1>Prado Chat Demo</h1>
+<noscript>Javascript is required for the chat demo to function.</noscript>
+<div id="messages" class="messages">
+	<com:TPlaceHolder ID="messageList" />
+</div>
+<div id="users" class="user-list">
+	<com:TPlaceHolder ID="userList" />
+</div>
+<div class="message-input">
+	<com:TActiveTextBox ID="userinput" 
+		Columns="40" Rows="2" TextMode="MultiLine" />
+
+	<com:TActiveImageButton ID="sendButton" CssClass="send-button" 
+		ImageUrl=<%~ send.gif %> OnClick="processMessage"/>
+</div>
+
+<com:TTimeTriggeredCallback OnCallback="refresh" 
+	Interval="2" StartTimerOnLoad="true" />
+
+<com:TClientScript>
+	Event.observe($("<%= $this->userinput->ClientID %>"), "keypress", function(ev)
+	{
+		if(Event.keyCode(ev) == Event.KEY_RETURN)
+		{
+			if(Event.element(ev).value.length > 0)
+				new Prado.Callback("<%= $this->sendButton->UniqueID %>");
+			Event.stop(ev);
+		}
+	});
+</com:TClientScript>
+</com:TForm>
+		<com:TJavascriptLogger Visible="false"/>
+
+<div id="footer">
+Copyright &copy; 2007 <a href="http://www.pradosoft.com">PradoSoft</a>.
+<br/><br/>
+<%= Prado::poweredByPrado() %>
+</div>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/demos/chat/protected/pages/Home.php b/demos/chat/protected/pages/Home.php
new file mode 100644
index 00000000..65cb22dc
--- /dev/null
+++ b/demos/chat/protected/pages/Home.php
@@ -0,0 +1,56 @@
+<?php
+
+class Home extends TPage
+{
+	public function onLoad($param)
+	{
+		$username = $this->Application->User->Name;
+		if(!$this->Application->Modules['users']->usernameExists($username))
+		{
+			$auth = $this->Application->Modules['auth'];
+			$auth->logout();
+
+			//redirect to login page.
+			$this->Response->Redirect($this->Service->ConstructUrl($auth->LoginPage));
+		}
+	}
+
+	function processMessage($sender, $param)
+	{
+		if(strlen($this->userinput->Text) > 0)
+		{
+			$record = new ChatBufferRecord();
+			$record->message = $this->userinput->Text;
+			$record->from_user = $this->Application->User->Name;
+			$record->saveMessage();
+			$this->userinput->Text = '';
+			$this->refresh($sender, $param);
+			$this->CallbackClient->focus($this->userinput);
+		}
+	}
+
+	function refresh($sender, $param)
+	{
+		//refresh the message list
+		$content = ChatBufferRecord::finder()->getUserMessages($this->Application->User->Name);
+		if(strlen($content) > 0)
+		{
+			$client = $this->Page->CallbackClient;
+			$anchor = (string)time();
+			$content .= "<a href=\"#\" id=\"{$anchor}\"> </a>";
+			$client->appendContent("messages", $content);
+			$client->focus($anchor);
+		}
+
+		//refresh the user list
+		$lastUpdate = $this->getViewState('userList','');
+		$users = ChatUserRecord::finder()->getUserList();
+		if($lastUpdate != $users)
+		{
+			$this->Page->CallbackClient->update('users', $users);
+			$this->setViewstate('userList', $users);
+		}
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/pages/Login.page b/demos/chat/protected/pages/Login.page
new file mode 100644
index 00000000..0d0a3fa8
--- /dev/null
+++ b/demos/chat/protected/pages/Login.page
@@ -0,0 +1,35 @@
+<!doctype html public "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+	
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+	<title>Prado Chat Demo Login</title>
+	<link rel="stylesheet" type="text/css" href="<%~ style.css %>" />
+</head>
+
+<body>
+
+<com:TForm>
+	<h1 class="login">Prado Chat Demo Login</h1>
+	<fieldset class="login">
+		<legend>Please enter your name:</legend>
+		<div class="username">
+			<com:TLabel ForControl="username" Text="Username:" />
+			<com:TTextBox ID="username" MaxLength="20" />
+			<com:TRequiredFieldValidator
+				ControlToValidate="username"
+				Display="Dynamic"
+				ErrorMessage="Please provide a username." />
+			<com:TCustomValidator
+				ControlToValidate="username"
+				Display="Dynamic"
+				OnServerValidate="checkUsername"
+				ErrorMessage="The username is already taken." />
+		</div>
+
+		<div class="login-button">
+			<com:TButton Text="Login" OnClick="createNewUser" />
+		</div>
+</com:TForm>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/demos/chat/protected/pages/Login.php b/demos/chat/protected/pages/Login.php
new file mode 100644
index 00000000..831ab925
--- /dev/null
+++ b/demos/chat/protected/pages/Login.php
@@ -0,0 +1,40 @@
+<?php
+
+class Login extends TPage
+{
+	/**
+	 * Check that the username is not already taken.
+	 * @param TControl custom validator that created the event.
+	 * @param TServerValidateEventParameter validation parameters. 
+	 */
+	function checkUsername($sender, $param)
+	{
+		$manager = $this->Application->Modules['users'];
+		if($manager->usernameExists($this->username->Text))
+			$param->IsValid = false;
+	}
+
+	/**
+	 * Create and login a new user, then redirect to the requested page.
+	 * @param TControl button control that created the event.
+	 * @param TEventParameter event parameters.
+	 */
+	function createNewUser($sender, $param)
+	{
+		if($this->Page->IsValid)
+		{
+			$manager = $this->Application->Modules['users'];
+			$manager->addNewUser($this->username->Text);
+			
+			//do manual login
+			$user = $manager->getUser($this->username->Text);
+			$auth = $this->Application->Modules['auth'];
+			$auth->updateSessionUser($user);
+			$this->Application->User = $user;
+
+			$this->Response->redirect($auth->ReturnUrl);
+		}
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/demos/chat/protected/pages/config.xml b/demos/chat/protected/pages/config.xml
new file mode 100644
index 00000000..c9fbdaae
--- /dev/null
+++ b/demos/chat/protected/pages/config.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+
+  <modules>
+  	<module id="users" class="ChatUserManager" />
+    <module id="auth" class="TAuthManager" UserManager="users" LoginPage="Login" />
+  </modules>
+
+  <authorization>
+	<allow pages="Login" users="?" />
+    <allow roles="normal" />
+    <deny users="*" />
+  </authorization>
+
+</configuration>
\ No newline at end of file
diff --git a/demos/chat/protected/pages/send.gif b/demos/chat/protected/pages/send.gif
new file mode 100644
index 00000000..b3c5219d
Binary files /dev/null and b/demos/chat/protected/pages/send.gif differ
diff --git a/demos/chat/protected/pages/send.png b/demos/chat/protected/pages/send.png
new file mode 100644
index 00000000..3025b77d
Binary files /dev/null and b/demos/chat/protected/pages/send.png differ
diff --git a/demos/chat/protected/pages/style.css b/demos/chat/protected/pages/style.css
new file mode 100644
index 00000000..884aff7c
--- /dev/null
+++ b/demos/chat/protected/pages/style.css
@@ -0,0 +1,82 @@
+body
+{
+	width: 700px;
+	margin: 2em auto;
+	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
+}
+
+h1
+{
+	font-size: 1.5em;
+	color: #444;
+}
+
+.login
+{
+	width: 500px;
+	margin: 1em auto;
+}
+
+.login .username
+{
+	margin: 1em;
+}
+
+.login .login-button
+{
+	padding-left: 7em;
+}
+
+.messages
+{
+	width: 500px;
+	height: 300px;
+	float: left;	
+	border: 1px solid ButtonFace;
+	overflow: auto;
+}
+
+.messages .message
+{
+	margin: 0.4em 1em;
+	font-size: 0.85em;
+}
+
+.user-list
+{
+	margin-left: 2px;
+	float: left;
+	width: 180px;
+	height: 300px;
+	border: 1px solid ButtonFace;
+	overflow: auto;
+	font-size: 0.85em;
+}
+
+.message-input
+{
+	float: left;
+}
+
+.message-input textarea
+{
+	margin-top: 3px;
+	padding: 0.4em 0.2em;			
+	width: 493px;
+	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
+	font-size: 0.85em;
+	height: 40px;
+}
+
+.send-button
+{
+	margin: 0.5em;
+}
+
+#footer
+{
+	clear: both;
+	font-size: 0.7em;
+	text-align: center;
+	padding-top: 50px;
+}
\ No newline at end of file
-- 
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