[Fixed] Extension Newbie Needs Help Bad

<?php  if ( ! defined('EXT')) exit('No direct script access allowed');
/**
 * AJAX Comments
 *
 * Needed for the AJAX Comments Plugin to work
 *
 * @author        Cody Lundquist
 * @license        http://creativecommons.org/licenses/by-sa/3.0/
 * @link        http://www.codysplace.com
 * @since        Version 1.0
 * @filesource
 * 
 * This work is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported.
 * To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/
 * or send a letter to Creative Commons, 171 Second Street, Suite 300,
 * San Francisco, California, 94105, USA.
 * 
 */
class Ajax_comments {

    var $settings        = array();
    var $name            = 'AJAX Comments';
    var $version        = '1.0';
    var $description    = 'Needed for AJAX Comments Plugin to work.';
    var $settings_exist    = 'y';
    var $docs_url        = '';

    /**
     * Constructor
     */
    function Ajax_comments($settings = '')
    {
        $this->settings = $settings;
    }

    // --------------------------------------------------------------------
    
    /**
     * Register hooks by adding them to the database
     */
    function activate_extension()
    {
        global $DB;

        // default settings
        $settings =    array();
        $settings['comment_url'] = 'http://example.com/blog/comment_container/';
        
        $DB->query($DB->insert_string('exp_extensions',
                array(
                'extension_id'    => '',
                'class'            => __CLASS__,
                'method'        => "change_return",
                'hook'            => "comment_form_hidden_fields",
                'settings'        => serialize($settings),
                'priority'        => 10,
                'version'        => $this->version,
                'enabled'        => "y"
                )
            )
        );
        
        $DB->query($DB->insert_string('exp_extensions',
                array(
                'extension_id'    => '',
                'class'            => __CLASS__,
                'method'        => "change_action",
                'hook'            => "comment_form_action",
                'settings'        => "",
                'priority'        => 10,
                'version'        => $this->version,
                'enabled'        => "y"
                )
            )
        );
    }
    
    // --------------------------------------------------------------------
    
    /**
     * No updates yet.
     * Manual says this function is required.
     * @param string $current currently installed version
     */
    function update_extension($current = '')
    {
        global $DB, $EXT;

        if ($current < '1.0')
        {
            $query = $DB->query("SELECT settings FROM exp_extensions WHERE class = '".$DB->escape_str(__CLASS__)."'");
            
            $this->settings = unserialize($query->row['settings']);
            unset($this->settings['comment_url']);
            
            $DB->query($DB->update_string('exp_extensions', array('settings' => serialize($this->settings), 'version' => $this->version), array('class' => __CLASS__)));
        }
        
        return TRUE;
    }
    
    // --------------------------------------------------------------------
    
    /**
     * Uninstalls extension
     */
    function disable_extension()
    {
        global $DB;
        $DB->query("DELETE FROM exp_extensions WHERE class = '".__CLASS__."'");
    }
    
    // --------------------------------------------------------------------
    
    /**
     * EE extension settings
     * @return array
     */
    function settings()
    {
        $settings = array();
        
        $settings['comment_url']        = '';
        
        return $settings;
    }

    // --------------------------------------------------------------------
    
    /**
     * Adds script tags to the head of CP pages
     * 
     * We add the jQuery libraries to the top of the head tag to ensure that they 
     * are before any other javascript that could use the libraries.
     * 
     * @param string $html Final html of the control panel before display
     * @return string Modified HTML
     */
    function change_return($return)
    {
        global $EXT;
        
        $EXT->end_script = TRUE;
    
        $return = ($EXT->last_call !== FALSE) ? $EXT->last_call : $return;
    
        return $return;
    }
    
    function change_action($action)
    {
        global $EXT;
        
        $EXT->end_script = TRUE;
        
        $action = ($EXT->last_call !== FALSE) ? $EXT->last_call : $action;
        
        return $action;
    }
    
    // --------------------------------------------------------------------
    
}
// END CLASS Cp_jquery

/* End of file ext.ajax_comments.php */
/* Location: ./system/extensions/ext.ajax_comments.php */