Adanced Custom Fields Object Oriented

gistfile1.php

<?php

$fieldset = new CodepoolFieldset('two_column_fieldset', 'Two Column', array('the_content'));
$fieldset->addField(new CodepoolField('left_content_title', 'Left Content Title', 'text'));
$fieldset->addField(new CodepoolField('left_content_subtitle', 'Left Content Subtitle', 'text'));
$fieldset->addField(new CodepoolField('left_content_image', 'Left Image', 'image'));
$fieldset->addField(new CodepoolField('left_content', 'Left Content', 'wp_wysiwyg'));
$fieldset->addField(new CodepoolField('right_content_title', 'Right Content Title', 'text'));
$fieldset->addField(new CodepoolField('right_content_subtitle', 'Right Content Subtitle', 'text'));
$fieldset->addField(new CodepoolField('right_content_image', 'Right Image', 'image'));
$fieldset->addField(new CodepoolField('right_content', 'Right Content', 'wp_wysiwyg'));
$fieldset->addLocation(new CodepoolPage('test-page-1'));
$fieldset->addLocation(new CodepoolPage('test-page-2'));
$fieldset->register();



// Vague implementation
abstract class CodepoolLocationAbstract
{
    public function map()
    {
        return array(array(
            'param' => $this->getType(),
            'operator' => '==',
            'value' => $this->getId(),
            'order_no' => 0,
            'group_no' => 0,
        ));
    }
}

class CodepoolPage extends CodepoolLocationAbstract
{
    protected $_type = 'page';
    protected $_id;

    public function __construct($pageSlug)
    {
        $this->_id = codepool_get_page_id_by_slug($pageSlug);
    }

    public function getType()
    {
        return $this->_type;
    }

    public function getId()
    {
        return $this->_id;
    }

}

class CodepoolPostType extends CodepoolLocationAbstract
{

    protected $_type = 'post_type';
    protected $_id;

    public function __construct($pageType)
    {
        $this->_id = $pageType;
    }

    public function getType()
    {
        return $this->_type;
    }

    public function getId()
    {
        return $this->_id;
    }

}

class CodepoolField
{

    protected $_fieldsetId;
    protected $_key;
    protected $_name;
    protected $_label;
    protected $_type;

    public function __construct($name, $label, $type)
    {
        $this->_name = $name;
        $this->_label = $label;
        $this->_type = $type;
    }

    public function setFieldsetId($fieldsetId)
    {
        $this->_fieldsetId = $fieldsetId;
    }

    public function getKey()
    {
        return $this->_key;
    }

    public function getName()
    {
        return $this->_name;
    }

    public function getLabel()
    {
        return $this->_label;
    }

    public function getType()
    {
        return $this->_type;
    }

    public function map()
    {
        $key = "{$this->_fieldsetId}_{$this->_name}_{$this->_type}";
        return array(
            'key' => $key,
            'label' => $this->_label,
            'name' => $this->_name,
            'type' => $this->_type,
            'default_value' => '',
            'toolbar' => 'full',
            'media_upload' => 'no',
            'formatting' => 'none',
        );
    }

}

class CodepoolFieldset
{

    protected $_fieldsetId;
    protected $_fieldsetLabel;
    protected $_fields = array();
    protected $_locations = array();
    protected $_sectionsToHide = array();

    public function __construct($fieldsetId, $fieldsetLabel, $sectionsToHide = array())
    {
        $this->_fieldsetId = $fieldsetId;
        $this->_fieldsetLabel = $fieldsetLabel;
        $this->_sectionsToHide = $sectionsToHide;
    }

    public function addField(CodepoolField $field)
    {
        $this->_fields[] = $field;
    }

    public function addLocation(CodepoolLocationAbstract $location)
    {
        $this->_locations[] = $location;
    }

    public function register()
    {
        $fields = array();
        foreach ($this->_fields as $_field) {
            $_field->setFieldsetId($this->_fieldsetId);
            $fields[] = $_field->map();
        }
        
        $locations = array();
        foreach ($this->_locations as $_location) {
            $locations[] = $_location->map();
        }
        
        $data = array(
            'id' => $this->_fieldsetId,
            'title' => $this->_fieldsetLabel,
            'fields' => $fields,
            'location' => $locations,
            'options' => array(
                'position' => 'normal',
                'layout' => 'default',
                'hide_on_screen' => $this->_sectionsToHide,
            ),
            'menu_order' => 0,
        );
        
        register_field_group($data);
    }
}