Extension of WP_Alchemy mediaaccess class

jm_wp_alchemy_media_access.php

<?php

include('MediaAccessBase.php');
/**
 * @author Jack Mahoney
 */
class WPAlchemy_MediaAccess extends WPAlchemy_MediaAccess_Base{
	
	public $meta_field_class_name = 'media-meta-field';
	
	public function __construct(){
		parent::__construct();
	}
	
	
	public function getMetaField(array $attr)
	{
		$groupname = isset($attr['groupname']) ? $attr['groupname'] : $this->groupname ;
		
		$attr_default = array
		(
			'type' => 'text',
			'class' => $this->meta_field_class_name . '-' . $groupname,
		);

		###

		if (isset($attr['class']))
		{
			$attr['class'] = $attr_default['class'] . ' ' . trim($attr['class']);
		}

		$attr = array_merge($attr_default, $attr);

		###

		$elem_attr = array();

		foreach ($attr as $n => $v)
		{
			array_push($elem_attr, $n . '="' . $v . '"');
		}

		###

		return '<input type="hidden"' . implode(' ', $elem_attr) . '/>';
	}
	
	/**
	 * Warning this code may become redundant
	 * @overide parent
	 */
	public function init(){
		$uri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : NULL ;

		$file = basename(parse_url($uri, PHP_URL_PATH));

		if ($uri AND in_array($file, array('post.php', 'post-new.php')))
		{
			// include javascript for special functionality
			?><script type="text/javascript">
			/* <![CDATA[ */

				var interval = null;

				jQuery(function($)
				{
					if (typeof send_to_editor === 'function')
					{
						var wpalchemy_insert_button_label = '';

						var wpalchemy_mediafield = null;
						var wpalchemy_mediafield_metafield = null;

						var wpalchemy_send_to_editor_default = send_to_editor;

						send_to_editor = function(html)
						{
							clearInterval(interval);
							
							if (wpalchemy_mediafield)
							{
								alert('hello');
								var src = html.match(/src=['|"](.*?)['|"] alt=/i);
								src = (src && src[1]) ? src[1] : '' ;

								var href = html.match(/href=['|"](.*?)['|"]/i);
								href = (href && href[1]) ? href[1] : '' ;

								var url = src ? src : href ;
								
								//!important
								var title = html.match(/title=['|"](.*?)['|"]/i);
								title = (title && title[1]) ? title[1] : '' ;
								
								wpalchemy_mediafield.val(url);
								wpalchemy_mediafield_metafield.val(title);

								// reset insert button label
								setInsertButtonLabel(wpalchemy_insert_button_label);

								wpalchemy_mediafield = null;
							}
							else
							{
								wpalchemy_send_to_editor_default(html);
							}

							tb_remove();
						}

						function getInsertButtonLabel()
						{
							return $('#TB_iframeContent').contents().find('.media-item .savesend input[type=submit], #insertonlybutton').val();
						}

						function setInsertButtonLabel(label)
						{
							$('#TB_iframeContent').contents().find('.media-item .savesend input[type=submit], #insertonlybutton').val(label);
						}

						$('[class*=<?php echo $this->button_class_name; ?>]').live('click', function()
						{
							var name = $(this).attr('class').match(/<?php echo $this->button_class_name; ?>-([a-zA-Z0-9_-]*)/i);
							name = (name && name[1]) ? name[1] : '' ;

							var data = $(this).attr('class').match(/({.*})/i);
							data = (data && data[1]) ? data[1] : '' ;
							data = eval("(" + (data.indexOf('{') < 0 ? '{' + data + '}' : data) + ")");

							wpalchemy_mediafield = $('.<?php echo $this->field_class_name; ?>-' + name, $(this).closest('.postbox'));
							wpalchemy_mediafield_metafield = $('.<?php echo $this->meta_field_class_name; ?>-' + name, $(this).closest('.postbox'));

							function iframeSetup()
							{
								if ($('#TB_iframeContent').contents().find('.media-item .savesend input[type=submit], #insertonlybutton').length)
								{
									// run once
									if ( ! wpalchemy_insert_button_label.length)
									{
										wpalchemy_insert_button_label = getInsertButtonLabel();
									}

									setInsertButtonLabel((data && data.label)?data.label:'Insert');

									// tab "type" needs a timer in order to properly change the button label

									//clearInterval(interval);

									// setup iframe.load as soon as it becomes available
									// prevent multiple binds
									//$('#TB_iframeContent').unbind('load', iframeSetup).bind('load', iframeSetup);
								}
							}

							clearInterval(interval);

							interval = setInterval(iframeSetup, 500);
						});
					}
				});

			/* ]]> */
			</script><?php
		}
	}
	
}