Source for file classes_folder.php

<?php
 
class folder extends b_resource {
    //base resource definition
        
    
        
    function folder( $constructID = NULL ) {
        parent::b_resource( $constructID, 'folders' );
    }
    
    function get_index() {
        if( $this->name ) {
            return $this->name;
        } else if( $this->path ) {
            $path_parts = pathinfo($this->path);
            return $path_parts['basename'];
        } else {
            return "new folder";
        }
    }
        
    function scan( $include_subdirs = TRUE, $resize = FALSE ) {
        //scans the folder and returns an subfolders and files which do not exist in the database
        if( file_exists( $this->path ) ) {
            $dir = get_directory_tree( $this->path );
            $subdir =& $GLOBALS['core']->get_relationship_type('parent folder-subfolders');
            $subfile =& $GLOBALS['core']->get_relationship_type('parent folder-images');
            
            //retrieve all files and create new DB entries for new ones
            foreach( $dir['files'] as $file ) {
                if( $class = resource_class( $file ) ) {
 
                    //set object in DB
                    $resource = new $class( $file );
                    if( $resource->id == '*new*' ) {
    
                        $resource->verify_set( array( 'path'=>$file, 'name'=>$path_parts['basename'] ) );
                        
                        //relate to parent directory
                        new relationship( NULL, $subfile->type_id, $this->id, $resource->id );
                    }
                }
            }
            foreach( $dir['folders'] as $folder ) {            
                //set object in DB
                $resource = new folder( $folder );
                if( $resource->id == '*new*' ) {
                    $resource->verify_set( array( 'path'=>$folder ) );
 
                    //relate to parent directory
                    new relationship( NULL, $subdir->type_id, $this->id, $resource->id );
                }
            }
            
            //validate and propogate
            if( $files = $this->get_files() ) {
                foreach( $files as $file ) {
                    
                    //validate
                    if( !$file->validate() ) { $file->delete(); }
                    else if( $resize && get_class( $file ) == 'image' ) {
                    //create derivative files for screen and icon display
                        if( !$file->derivative_paths['icon'] ) {
                            $path_parts = pathinfo( $file->path );
                            $target_path = $path_parts['dirname'].'/_icon_images/'.$path_parts['basename'];
                            $file->resize_proportional( 100, 100, $target_path, 'icon' );
                        }
                        if( !$file->derivative_paths['screen'] ) {
                            $path_parts = pathinfo( $file->path );
                            $target_path = $path_parts['dirname'].'/_screen_images/'.$path_parts['basename'];
                            $file->resize_proportional( 500, 400, $target_path, 'screen' );
                        }
                        
                        $file->verify_set( array( 'derivative_paths' => $file->derivative_paths ) );
                    }
                }
            }
            if( $folders = $this->get_subfolders() ) {
                foreach( $folders as $folder ) {
                    //validate
                    if( !$folder->validate() ) { $folder->delete(); }
        
                    //propogate
                     else if( $include_subdirs ) { $folder->scan( $include_subdirs ); }
                }
            }
        } else {
            $this->delete();
        }
    }
    
    function get_folder_contents() {
        return array( 'subfolders'=>$this->get_subfolders(), 'files'=>$this->get_files() );
    }
    
    function get_subfolders() {
        if( $type =& $GLOBALS['core']->get_relationship_type( 'parent folder-subfolders' ) ) {
            if( $relationships = $type->get_byValue( array(array('attribute'=>'primaryID','operator'=>'=','value'=>$this->id)) ) ) {
                foreach( $relationships as $relationship ) {
                    $returnArray[] = get_object($relationship->secondaryID);
                }
            }
        return $returnArray;
        }
    }
    
    function get_files() {
        //NOTE: if any other file types are defined they'll need to be added here
        if( $type =& $GLOBALS['core']->get_relationship_type( 'parent folder-images' ) ) {
            if( $relationships = $type->get_byValue( array(array('attribute'=>'primaryID','operator'=>'=','value'=>$this->id)) ) ) {
                foreach( $relationships as $relationship ) {
                    $returnArray[] =& get_object($relationship->secondaryID);
                }
            }
        return $returnArray;
        }
    }
    
    function delete( $delete_file = TRUE ) {
        //remove resource if local
        if( $delete_file && file_exists( $this->path ) ) {
            //delete directory and contents
            
            //NOTE: this is from the old delete directory function, but it doesn't work with the database
            /*if ($handle = opendir($this->path)) {
                while (false !== ($file = readdir($handle))) {
                    if ($file != "." && $file != ".." ) {
                        if( is_dir( $path."/".$file ) ) {
                            delete_directory( $path."/".$file );
                        } else {
                            unlink( $path."/".$file );
                        }
                    }
                }
                closedir($handle);
            }*/
            
            //NOTE: i think this is a better approach
            if( $files = $this->get_files() ) { foreach( $files as $file ) {
                $file->delete();
            } }
 
            //get any subfolders or files in the folder and delete them            
            if( $subfolders = $this->get_subfolders() ) { foreach( $subfolders as $folder ) {
                $folder->delete();
            } }
            
            //delete this folder
            rmdir( $this->path );
        }
        
        //remove from DB
        parent::delete();
    }
    
    function get_contents( $navArray = NULL ) {
        if( allowed( 'view any '.$this->type->type_name ) ) {
            if( !$fieldArray ) { $fieldArray = $this->type->get_attribute( 'type_object_field_list' ); }
            if( $_GET['module'] ) { $module = 'module='.$_GET['module'].'&'; }
            $returnString;
            
            //open the form
            $returnString .='<form method="post" name="theForm" action="'.echo_url(true, false).'?'.$module.'object_type='.$this->type->get_attribute( 'type_name' ).'&object='.$this->id.'">';
 
            //output toolbar and navigation
            $returnString .= $this->get_sidebar( $navArray );
            
            //open the content div
            $returnString .= '<div id="sub_content">';
            
            /*global $db;
            $db->get_results("SELECT * FROM object_permissions ORDER BY name");
            $db->debug();*/
            
            //output title info
            $returnString .= $this->get_title();
            
            //output an errors in submitted form data
            $returnString .= error_text();
            
            //output the folder's contents
            $returnString .= $this->get_folder_table();
            
            if( $this->id == '*new*' ) {
                $fieldArray = array( array( 'src'=>'var', 'type'=>'input', 'label'=>'folder path', 'value'=>'path' ) );
            }
            
            //output the object's data
            $returnString .= $this->get_object_table( $fieldArray );
            
            //close the form
            $returnString .= '</form>';
            
            //output any relationships
            //if( $this->id != '*new*' ) {
                //$returnString .= $this->get_relationships_content();
            //}
            
            //close the content div
            $returnString .= '</div>';
            
            return $returnString;
        }
    }
    
    function get_folder_table() {
        //this should display the folder's contents, differentiating between folders and files, and providing links to edit or delete each file
        if( $folders = $this->get_subfolders() ) {
            foreach( $folders as $folder ) {
                $output[] =& $folder;
            }
        }
        if( $files = $this->get_files() ) {
            foreach( $files as $file ) {
                $output[] = $file;
            }
        }
        if( $output ) {
            $fieldArray = array( 
                array( 'src'=>'var', 'label'=>'type', 'value'=>'resource_type' ),
                array( 'src'=>'var', 'label'=>'name', 'value'=>'name' ),
                array( 'src'=>'var', 'label'=>'date', 'value'=>'create_date' ),
                array( 'src'=>'switch', 'value'=>'edit', 'permission'=>"view any single folder" ),
                array( 'src'=>'switch', 'value'=>'delete', 'permission'=>"modify folders" )
            );
 
            return table( $output, '', $fieldArray );
        }
    }
}
 
?>