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   1  <?php
   2  /*
   3   * Limb PHP Framework
   4   *
   5   * @link http://limb-project.com 
   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)
   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html 
   8   */
   9  
  10  /**
  11   * Used to store complex expressions like "{$var1}_my_{$var2}" found inside tag attributes
  12   * @package wact
  13   * @version $Id: WactAttribute.class.php 5945 2007-06-06 08:31:43Z pachanga $
  14   */
  15  class WactAttribute implements WactExpressionInterface
  16  {
  17    protected $name;
  18    protected $fragments = array();
  19  
  20    function __construct($name, $value = null)
  21    {
  22      $this->name = $name;
  23  
  24      if($value)
  25        $this->addFragment(new WactAttributeLiteralFragment($value));
  26    }
  27  
  28    function getName()
  29    {
  30      return $this->name;
  31    }
  32  
  33    function addFragment($fragment)
  34    {
  35      $this->fragments[] = $fragment;
  36    }
  37  
  38    function getFragment($index)
  39    {
  40      if(isset($this->fragments[$index]))
  41        return $this->fragments[$index];
  42    }
  43  
  44    function isConstant()
  45    {
  46      $isConstant = TRUE;
  47      foreach( array_keys($this->fragments) as $key)
  48        $isConstant = $isConstant && $this->fragments[$key]->isConstant();
  49      return $isConstant;
  50    }
  51  
  52    function getValue()
  53    {
  54      if(!count($this->fragments))
  55        return null;
  56  
  57      $value = "";
  58      foreach( array_keys($this->fragments) as $key)
  59        $value .= $this->fragments[$key]->getValue();
  60  
  61      return $value;
  62    }
  63  
  64    function generate($code_writer)
  65    {
  66      $code_writer->writeHTML(' ' . $this->name);
  67  
  68      if(!count($this->fragments))
  69        return;
  70  
  71      $code_writer->writeHTML('="');
  72  
  73      foreach( array_keys($this->fragments) as $key)
  74        $this->fragments[$key]->generateFragment($code_writer);
  75  
  76      $code_writer->writeHTML('"');
  77    }
  78  
  79    function generatePreStatement($code_writer)
  80    {
  81      foreach( array_keys($this->fragments) as $key)
  82        $this->fragments[$key]->generatePreStatement($code_writer);
  83    }
  84  
  85    function generateExpression($code_writer)
  86    {
  87      $code_writer->writePHP('(');
  88      $separator = '';
  89      foreach( array_keys($this->fragments) as $key)
  90      {
  91        $code_writer->writePHP($separator);
  92        $this->fragments[$key]->generateExpression($code_writer);
  93        $separator = ".";
  94      }
  95      $code_writer->writePHP(')');
  96    }
  97  
  98    function generatePostStatement($code_writer)
  99    {
 100      foreach( array_keys($this->fragments) as $key)
 101        $this->fragments[$key]->generatePostStatement($code_writer);
 102    }
 103  
 104    function prepare()
 105    {
 106      foreach( array_keys($this->fragments) as $key)
 107        $this->fragments[$key]->prepare();
 108    }
 109  }
 110  
 111  ?>