1 <?php
 2 /**
 3  * A field that allows you to attach an image to a record from within a iframe - designed for use in AJAX forms where it
 4  * is not possible to use {@link SimpleImageField}.
 5  *
 6  * @package forms
 7  * @subpackage fields-files
 8  */
 9 class ImageField extends FileIFrameField {
10     
11     /**
12      * @return SimpleImageField_Disabled
13      */
14     public function performReadonlyTransformation() {
15         return new SimpleImageField_Disabled($this->name, $this->title, $this->value, $this->form);
16     }
17     
18     /**
19      * @return string
20      */
21     public function FileTypeName() {
22         return _t('ImageField.IMAGE', 'Image');
23     }
24     
25     /**
26      * Adds the filter, so the dropdown displays only images and folders.
27      *
28      * @return Form
29      */
30     public function EditFileForm() {
31         $filter = create_function('$item', 'return ($item->ClassName=="Folder" || $item->ClassName=="Image");');
32         
33         $form = parent::EditFileForm();
34         $form->dataFieldByName('ExistingFile')->setFilterFunction($filter);
35 
36         return $form;
37     }
38 }