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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * A single page that can display many images as thumbnails.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package gallery  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class GalleryPage extends GalleryHub  | 
            
                            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $description = 'Display a "gallery" of images';  | 
            
                            
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                    private static $icon = "gallery/images/gallery.png";  | 
            
                            
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                    private static $db = array(  | 
            
                            
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                        "ImageWidth" => "Int",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        "ImageHeight" => "Int",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        "ImageResizeType" => "Enum(array('crop','pad','ratio','width','height'), 'ratio')" | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $defaults = array(  | 
            
                            
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                        "ImageWidth" => 950,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        "ImageHeight" => 500,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        "ShowSideBar" => 1  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $many_many = array(  | 
            
                            
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                        'Images' => 'Image'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $many_many_extraFields = array(  | 
            
                            
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                        'Images' => array('SortOrder' => 'Int') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Return sorted images  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return ArrayList  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function SortedImages()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->Images()->Sort('SortOrder'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function getCMSFields()  | 
            
                            
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                        $self =& $this;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->beforeUpdateCMSFields(function ($fields) use ($self) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if (!$self->canEdit()) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                return;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $fields->removeByName('HideDescription'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $upload_folder = Controller::join_links(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                "gallery",  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $self->ID  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $fields->addFieldToTab(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                "Root.Gallery",  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                SortableUploadField::create(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'Images',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    $this->fieldLabel('Images') | 
            
            
                                                                        
                            
            
                                    
            
            
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                                )->setFolderName($upload_folder)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        });  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return parent::getCMSFields();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getSettingsFields() { | 
            
                            
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                        $fields = parent::getSettingsFields();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fields->addFieldsToTab(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Root.Settings',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                NumericField::create("ImageWidth"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                NumericField::create("ImageHeight"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                DropdownField::create("ImageResizeType") | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ->setSource($this->dbObject("ImageResizeType")->enumValues()) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $fields;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function onBeforeWrite()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::onBeforeWrite();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // default settings (if not set)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $defaults = $this->config()->defaults;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->ImageWidth = ($this->ImageWidth) ? $this->ImageWidth : $defaults["ImageWidth"];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->ImageHeight = ($this->ImageHeight) ? $this->ImageHeight : $defaults["ImageHeight"];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.