Indeterminate Monitor & User-Callback

$Date: 2004/04/18 13:25:43 $

Table of contents

Introduction
PHP script
Render options
Output
Play full example

Introduction

This example will run a ProgressBar Monitor, handled by function user callback. Its started in indeterminate mode then switch back in determinate mode. Used default QuickForm renderer with a non-standard color scheme for form template and progress bar.

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PHP script

User-Callback


<?php
// progressHandler.php

function myFunctionHandler($progressValue, &$obj)
{
    $bar =& $obj->getProgressElement();
    if (!$bar->isIndeterminate()) {
        if (fmod($progressValue,10) == 0) {
            $obj->setCaption("myFunctionHandler -> progress value is = $progressValue");
        }
    } else {
        /* in case we have attached an indeterminate progress bar to the monitor ($obj)
           after a first pass that reached 60%, 
           we swap from indeterminate mode to determinate mode
           and run a standard progress bar from 0 to 100%
        */   
        if ($progressValue == 60) {
            $bar->setIndeterminate(false);
            $bar->setString(null);           // show percent-info
            $bar->setValue(0);
        }
    }
}
?>

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Render options

Used a pre-set UI model: Progress_ITDynamic in file progressModels.php

Here are the progress attributes:

background-color = #EEE

HTML_Progress_UI::setProgressAttributes()

Here are the progress string attributes:

color            = navy
background-color = #EEE

HTML_Progress_UI::setStringAttributes()

Here are the progress cells attributes:

inactive-color = #FFF
active-color   = #444444

HTML_Progress_UI::setCellAttributes()

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Output

Screenshot

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Play full example

Run the script below :


<?php
require_once 'HTML/Progress/monitor.php';
require_once 'progressModels.php';
require_once 'progressHandler.php';


$monitor = new HTML_Progress_Monitor('frmMonitor4', array(
    'button' => array('style' => 'width:80px;')
    )
);
$monitor->setProgressHandler('myFunctionHandler');

// Attach a progress ui-model (see file progressModels.php for attributes definition)
$progress = new HTML_Progress();
$progress->setAnimSpeed(50);
$progress->setUI('Progress_ITDynamic');
$progress->setStringPainted(true);     // get space for the string
$progress->setString("");              // but don't paint it
$progress->setIndeterminate(true);     // Progress start in indeterminate mode
$monitor->setProgressElement($progress);
?>
<html>
<head>
<title>ProgressBar Monitor - Default renderer </title>
<style type="text/css">
<!--
body {
    background-color: lightgrey;
    font-family: Verdana, Arial;
}
.progressStatus {
    color: navy; 
    font-size:10px;
}
<?php echo $monitor->getStyle(); ?>
// -->
</style>
<script type="text/javascript">
<!--
<?php echo $monitor->getScript(); ?>
//-->
</script>
</head>
<body>

<?php 
$renderer =& HTML_QuickForm::defaultRenderer();
$renderer->setFormTemplate('
    <table width="450" border="0" cellpadding="3" cellspacing="2" bgcolor="#EEEEEE">
    <form{attributes}>{content}
    </form>
    </table>
    ');
$renderer->setHeaderTemplate('
    <tr>
        <td style="white-space:nowrap;background:#7B7B88;color:#ffc;" align="left" colspan="2"><b>{header}</b></td>
    </tr>
    ');
$monitor->accept($renderer);

echo $renderer->toHtml();

$monitor->run();   
?>

</body>
</html>

href: ./monitor_function_callback.php

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