Clicking the Add New button displays the upload box:
New Folder – Allows you to create a new folder in the current directory.
Move/
Copy Toggle – The move/copy function lets you to move or copy selected files to another folder by drag and drop. To move a single file, grab with with the mouse, drag and hold the mouse pointer, not the image, over the file folder where you want to move the image and release the mouse. To move multiple files, check the images’ checkboxes then drag any of the checked and hold the mouse, not the image over the destination folder and release the mouse. To copy one or more images to another folder first click on the move copy toggle to put in into copy mode and then drag a single to a destination folder and hold the mouse pointer over it and release it. To drag multiple files, check the images’ checkboxes and drag one of the check images in the same manner to the destination folder.
Rename – Rename a file in the current directory. Folders cannot be renames.
Delete – The delete function let you delete select files. Using the folder tree, you can delete a folder, right click on a folder you want to delete (CTRL-click on a Mac). This action will display a popup menu. Click “Delete this Folder?” and if the folder is empty, then it will be removed. If you get a message that the folder is not empty, view that folder and click the Sync button to add any files on the server that are not in the media library. Then you can remove the files and delete the folder as explained above.
Sync – In the event that a file is uploaded but not added to the media library database the Sync function will scan the current folder on the server and add any new files or folders it finds. It does not remove missing files or folders. It also works like a bulk add for the media library; just upload your files by FTP to an existing folder and then click the Sync button for that folder to add them all at one time. But note there is a limit to the number of files that Sync can handle at one time which is about 60 files.
Order by Date/
Order by Title – changes the display order of items in the current directory; either by file title or by date uploaded.
Add to Gallery – Once you get everything organized in folders you use this button to add selected files to a gallery. This button will not let you upload an entire folder. It only lets you upload selected media files. You can open a folder a simply click Select All to upload the entire contents of a folder. Also, it’s built to not let you add duplicate images to a gallery.
, to display the icon list. To close the list of icons, click the information icon again.
. To display images in a grid, click the grid view icon, 
.
, to reveal the Categories Area.
.
. There is also a Delete Backup icon 
if you don’t need to or just prefer not to keep a copy on your site.
to import the files and folders into the site’s media library.
mg_media_library_plus_post_type_args
add_filter(‘mg_media_library_plus_post_type_args’, ‘filter_type_args’);
Parameters
$args – post type paremeters
function filter_type_args($args)
$args = apply_filters(MGMLP_FILTER_POST_TYPE_ARGS, array(
‘public’ => false,
‘publicly_queryable’ => false,
‘show_ui’ => false,
‘show_in_nav_menus’ => false,
‘show_in_admin_bar’ => false,
‘show_in_menu’ => false,
‘query_var’ => true,
‘hierarchical’ => true,
‘supports’ => false,
‘exclude_from_search’ => true
));
return $args;
}
mgmlp_add_toolbar_buttons
add_filter(‘mgmlp_add_toolbar_buttons’, ‘add_toolbar_buttons’);
Parameters
$filter_output – button HTML code
function add_toolbar_buttons ($filter_output) {
return $filter_output;
}
mgmlp_add_toolbar_areas
add_filter(‘mgmlp_add_toolbar_areas’, ‘add_toolbar_area’);
Parameters
$filter_output
$filter_output – toolbar area HTML
function add_toolbar_area ($filter_output) {
return $filter_output;
}
mlfp_set_post_excerpt
(Adds text that can be used as the image caption when file is imported into Media Library Folders Pro during upload or sync)
add_filter(‘mlfp_set_post_excerpt’, ‘set_post_excerpt’);
Parameters
$post_caption – Text to be save in the post_excerpt field
$folder_name – name of the current folder
function set_post_excerpt ($post_caption, $folder_name) {
return $post_caption;
}
mlfp_filter_upload_destination
add_filter(‘mlfp_filter_upload_destination’, ‘filter_upload_destination’);
Parameters
$filename – the name of the file
$folder_id – the id of the parent folder
Returns
$folder_id
function filter_upload_destination($new_filename, $folder_id) {
return $folder_id;
}