Basic default Observer

$Date: 2004/04/18 13:25:44 $

Table of contents

Introduction
PHP script
Render options
Output
Play full example

Introduction

This example will run a ProgressBar with a default observer mechanism. 'progress_observer.log' is a flat file generated by HTML_Progress_Observer class. Here are the contents of a such file :

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PHP script

Build the progress bar


<?php 
require_once 'HTML/Progress.php';

$bar = new HTML_Progress();
$bar->setAnimSpeed(100);
$bar->setBorderPainted(true);
$bar->setIncrement(10);
?>

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Render options

Here are options to build the progress bar border :

width = 2

HTML_Progress_UI::setBorderAttributes()

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Output

Screenshot

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Play full example

Run the script below :


<?php 
require_once 'HTML/Progress.php';
require_once 'HTML/Progress/observer.php';

// 1. Creates ProgressBar
$bar = new HTML_Progress();
$bar->setAnimSpeed(100);
$bar->setBorderPainted(true);
$bar->setIncrement(10);

// 2. Creates and attach a listener 
$observer = new HTML_Progress_Observer();

$ok = $bar->addListener($observer);
if (!$ok) {
    die ("Cannot add a valid listener to progress bar !");
}

// 3. Changes look-and-feel of ProgressBar
$ui =& $bar->getUI();
$ui->setBorderAttributes('width = 2');                     // border: 2px, solid, #000000
$ui->setComment('Standard Observer ProgressBar example');
?>
<!DOCTYPE html
    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3c.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Standard Observer ProgressBar example</title>
<style type="text/css">
<!--
<?php echo $bar->getStyle(); ?>

body {
    background-color: #FFFFFF;
    color: #000000;
    font-family: Verdana, Arial;
}

a:visited, a:active, a:link {
    color: navy;
}
// -->
</style>
<script type="text/javascript">
<!--
<?php echo $bar->getScript(); ?>
//-->
</script>
</head>
<body>

<?php 
echo $bar->toHTML(); 

do {
    $bar->display();
    if ($bar->getPercentComplete() == 1) {
        break;   // the progress bar has reached 100%
    }
    $bar->incValue();
} while(1);
?>

</body>
</html>

href: ./observer_standard.php

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