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   1  <?php
   2  /**
   3   * TJavascriptLogger class file.
   4   *
   5   * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
   6   * @link http://www.pradosoft.com/
   7   * @copyright Copyright &copy; 2005 PradoSoft
   8   * @license http://www.pradosoft.com/license/
   9   * @version $Id: TJavascriptLogger.php 1553 2006-12-03 23:29:46Z wei $
  10   * @package System.Web.UI.WebControls
  11   */
  12  
  13  /**
  14   * TJavascriptLogger class.
  15   *
  16   * Provides logging for client-side javascript. Example: template code
  17   * <code><com:TJavascriptLogger /></code>
  18   *
  19   * Client-side javascript code to log info, error, warn, debug
  20   * <code>Logger.warn('A warning');
  21   * Logger.info('something happend');
  22   * </code>
  23   *
  24   * To see the logger and console, press ALT-D (or CTRL-D on OS X).
  25   * More information on the logger can be found at
  26   * http://gleepglop.com/javascripts/logger/
  27   *
  28   * @author Wei Zhuo<weizhuo[at]gmail[dot]com>
  29   * @version $Id: TJavascriptLogger.php 1553 2006-12-03 23:29:46Z wei $
  30   * @package System.Web.UI.WebControls
  31   * @since 3.0
  32   */
  33  class TJavascriptLogger extends TWebControl
  34  {
  35      private static $_keyCodes = array(
  36          '0'=>48, '1'=>49, '2'=>50, '3'=>51, '4'=>52, '5'=>53, '6'=>54, '7'=>55, '8'=>56, '9'=>57, 
  37          'a'=>65, 'b'=>66, 'c'=>67, 'd'=>68, 'e'=>69, 'f'=>70, 'g'=>71, 'h'=>72,
  38          'i'=>73, 'j'=>74, 'k'=>75, 'l'=>76, 'm'=>77, 'n'=>78, 'o'=>79, 'p'=>80,
  39          'q'=>81, 'r'=>82, 's'=>83, 't'=>84, 'u'=>85, 'v'=>86, 'w'=>87, 'x'=>88, 'y'=>89, 'z'=>90);
  40  
  41      /**
  42       * @return string tag name of the panel
  43       */
  44  	protected function getTagName()
  45      {
  46          return 'div';
  47      }
  48  
  49      /**
  50       * @param string keyboard key for toggling the console, default is J.
  51       */
  52  	public function setToggleKey($value)
  53      {
  54          $this->setViewState('ToggleKey', $value, 'j');
  55      }
  56  
  57      /**
  58       * @return string keyboard key for toggling the console.
  59       */
  60  	public function getToggleKey()
  61      {
  62          return $this->getViewState('ToggleKey', 'j');
  63      }
  64  
  65      /**
  66       * Registers the required logger javascript.
  67       * @param TEventParameter event parameter
  68       */
  69  	public function onPreRender($param)
  70      {
  71          $key = strtolower($this->getToggleKey());
  72          $code = isset(self::$_keyCodes[$key]) ? self::$_keyCodes[$key] : 74;
  73          $js = "var logConsole; Event.OnLoad(function() { logConsole = new LogConsole($code)}); ";
  74          $cs = $this->getPage()->getClientScript();
  75          $cs->registerBeginScript($this->getClientID(),$js);
  76          $cs->registerPradoScript('logger');
  77      }
  78  
  79      /**
  80       * Register the required javascript libraries and
  81       * display some general usage information.
  82       * @param THtmlWriter the writer used for the rendering purpose
  83       */
  84  	public function renderContents($writer)
  85      {
  86          $code = strtoupper($this->getToggleKey());
  87          $info = '(<a href="http://gleepglop.com/javascripts/logger/" target="_blank">more info</a>).';
  88          $link = '<a href="javascript:if(logConsole)logConsole.toggle()">toggle the javascript log console.</a>';
  89          $usage = 'Press ALT-'.$code.' (Or CTRL-'.$code.' on OS X) to';
  90          $writer->write("{$usage} {$link} {$info}");
  91      }
  92  }
  93  
  94  ?>