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<?php
/**
* TJavascriptLogger class file.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2008 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id$
* @package System.Web.UI.WebControls
*/
/**
* TJavascriptLogger class.
*
* Provides logging for client-side javascript. Example: template code
* <code><com:TJavascriptLogger /></code>
*
* Client-side javascript code to log info, error, warn, debug
* <code>Logger.warn('A warning');
* Logger.info('something happend');
* </code>
*
* To see the logger and console, press ALT-D (or CTRL-D on OS X).
* More information on the logger can be found at
* http://gleepglop.com/javascripts/logger/
*
* @author Wei Zhuo<weizhuo[at]gmail[dot]com>
* @version $Id$
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TJavascriptLogger extends TWebControl
{
private static $_keyCodes = array(
'0'=>48, '1'=>49, '2'=>50, '3'=>51, '4'=>52, '5'=>53, '6'=>54, '7'=>55, '8'=>56, '9'=>57,
'a'=>65, 'b'=>66, 'c'=>67, 'd'=>68, 'e'=>69, 'f'=>70, 'g'=>71, 'h'=>72,
'i'=>73, 'j'=>74, 'k'=>75, 'l'=>76, 'm'=>77, 'n'=>78, 'o'=>79, 'p'=>80,
'q'=>81, 'r'=>82, 's'=>83, 't'=>84, 'u'=>85, 'v'=>86, 'w'=>87, 'x'=>88, 'y'=>89, 'z'=>90);
/**
* @return string tag name of the panel
*/
protected function getTagName()
{
return 'div';
}
/**
* @param string keyboard key for toggling the console, default is J.
*/
public function setToggleKey($value)
{
$this->setViewState('ToggleKey', $value, 'j');
}
/**
* @return string keyboard key for toggling the console.
*/
public function getToggleKey()
{
return $this->getViewState('ToggleKey', 'j');
}
/**
* Registers the required logger javascript.
* @param TEventParameter event parameter
*/
public function onPreRender($param)
{
$key = strtolower($this->getToggleKey());
$code = isset(self::$_keyCodes[$key]) ? self::$_keyCodes[$key] : 74;
$js = "var logConsole; Event.OnLoad(function() { logConsole = new LogConsole($code)}); ";
$cs = $this->getPage()->getClientScript();
$cs->registerBeginScript($this->getClientID(),$js);
$cs->registerPradoScript('logger');
}
/**
* Register the required javascript libraries and
* display some general usage information.
* @param THtmlWriter the writer used for the rendering purpose
*/
public function renderContents($writer)
{
$code = strtoupper($this->getToggleKey());
$info = '(<a href="http://gleepglop.com/javascripts/logger/" target="_blank">more info</a>).';
$link = '<a href="javascript:if(logConsole)logConsole.toggle()">toggle the javascript log console.</a>';
$usage = 'Press ALT-'.$code.' (Or CTRL-'.$code.' on OS X) to';
$writer->write("{$usage} {$link} {$info}");
}
}
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