Subversion-Projekte lars-tiefland.prado

<?php
/**
 * TJavascriptLogger class file.
 *
 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2008 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Id: TJavascriptLogger.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @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: TJavascriptLogger.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @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}");
        }
}