1 <?php
  2 /**
  3  * SimpleImageField provides an easy way of uploading images to {@link Image} has_one relationships.
  4  * These relationships are auto-detected if you name the field accordingly.
  5  * Unlike {@link ImageField}, it doesn't use an iframe.
  6  * 
  7  * Restricts the upload size to 2MB by default, and only allows upload
  8  * of files with the extension 'jpg', 'gif' or 'png'.
  9  * 
 10  * Example Usage:
 11  * <code>
 12  * class Article extends DataObject {
 13  *  static $has_one = array('MyImage' => 'Image');
 14  * }
 15  * // use in your form constructor etc.
 16  * $myField = new SimpleImageField('MyImage');
 17  * </code>
 18  * 
 19  * @package forms
 20  * @subpackage fields-files
 21  */
 22 
 23 class SimpleImageField extends FileField {
 24     /**
 25      * @deprecated 2.5
 26      */
 27     public $allowedExtensions = array('jpg','gif','png');
 28 
 29     function __construct($name, $title = null, $value = null, $form = null, $rightTitle = null, $folderName = null) {
 30         parent::__construct($name, $title, $value, $form, $rightTitle, $folderName);
 31 
 32         $this->getValidator()->setAllowedExtensions(array('jpg','gif','png'));
 33     }
 34 
 35     function Field() {
 36         if($this->form) $record = $this->form->getRecord();
 37         $fieldName = $this->name;
 38         if(isset($record)&&$record) {
 39             $imageField = $record->$fieldName();
 40         } else {
 41             $imageField = "";
 42         }
 43             
 44         $html = "<div class=\"simpleimage\">";
 45         if($imageField && $imageField->exists()) {
 46             $html .= '<div class="thumbnail">';
 47             if($imageField->hasMethod('Thumbnail') && $imageField->Thumbnail()) {
 48                 $html .= "<img src=\"".$imageField->Thumbnail()->getURL()."\" />";
 49             } else if($imageField->CMSThumbnail()) {
 50                 $html .= "<img src=\"".$imageField->CMSThumbnail()->getURL()."\" />";
 51             }
 52             $html .= '</div>';
 53         }
 54         $html .= $this->createTag("input", 
 55             array(
 56                 "type" => "file", 
 57                 "name" => $this->name, 
 58                 "id" => $this->id(),
 59                 "tabindex" => $this->getTabIndex(),
 60                 'disabled' => $this->disabled
 61             )
 62         );
 63         $html .= $this->createTag("input", 
 64             array(
 65                 "type" => "hidden", 
 66                 "name" => "MAX_FILE_SIZE", 
 67                 "value" => $this->getValidator()->getAllowedMaxFileSize(),
 68                 "tabindex" => $this->getTabIndex()
 69             )
 70         );
 71         $html .= "</div>";
 72         
 73         return $html;
 74     }
 75   
 76     /**
 77      * Returns a readonly version of this field
 78      */
 79     function performReadonlyTransformation() {
 80         $field = new SimpleImageField_Disabled($this->name, $this->title, $this->value);
 81         $field->setForm($this->form);
 82         $field->setReadonly(true);
 83         return $field;
 84     } 
 85 }
 86 
 87 /**
 88  * Disabled version of {@link SimpleImageField}.
 89  * @package forms
 90  * @subpackage fields-files
 91  */
 92 class SimpleImageField_Disabled extends FormField {
 93     
 94     protected $disabled = true;
 95     
 96     protected $readonly = true;
 97     
 98     function Field() {
 99         $record = $this->form->getRecord();
100         $fieldName = $this->name;
101         if($record) $imageField = $record->$fieldName();
102         $field = "<div class=\"simpleimage\">";
103         if($imageField && $imageField->exists()) {
104           if($imageField->hasMethod('Thumbnail')) $field .= "<img src=\"".$imageField->Thumbnail()->URL."\" />";
105           elseif($imageField->CMSThumbnail()) $field .= "<img src=\"".$imageField->CMSThumbnail()->URL."\" />";
106           else {} // This shouldn't be called but it sometimes is for some reason, so we don't do anything
107         }else{
108             $field .= "<label>" . _t('SimpleImageField.NOUPLOAD', 'No Image Uploaded') . "</label>";
109         }
110         $field .= "</div>";
111         return $field;
112     }
113 
114 }