Magento create new field type for admin module

Question

in a custom module with admin pages, in the file
app\code\local\Namespace\Mymodulw\Block\Myblock\Edit\Tab\Form.php you can add somthing like this

$fieldset->addField('title', 'text', array(
        'label'     => Mage::helper('mymodule')->__('Title'),
        'class'     => 'required-entry',
        'required'  => true,
        'name'      => 'title',
    ));

this create an input of type text in the edit page, what i'm trying to do is create a new type, then i can make something like this

$fieldset->addField('title', 'mytype', array(
        'label'     => Mage::helper('mymodule')->__('Title'),
        'class'     => 'required-entry',
        'required'  => true,
        'name'      => 'title',
    ));

can you see the diference?? thanks

Answer 1

Mage::helper('mymodule') to Mage::helper('Mymodule') ????

Answer 2

The adminhtml field types extend Varien_Data_Form_Element_Abstract and are located in \lib\Varien\Data\Form\Element. So you would need to create a new file called Mytype.php with a declaration of class Varien_Data_Form_Element_Mytype extends Varien_Data_Form_Element_Abstract and then override the Abstract methods to function as you need.

Check out the files in that directory for examples.

Cheers, JD