Shelf (computing)
| Company type | User interface component |
|---|---|
| Industry | Software, Operating systems |
| Products | Shortcut storage, File management tool |
The Shelf serves as a user interface component within NeXTSTEP and OPENSTEP, functioning as a storage area for shortcuts to frequently accessed files, folders, and applications. It also acts as a temporary space to facilitate the moving or copying of items throughout the file system. Unlike the Finder sidebar in macOS, items placed on the Shelf behave as interactive placeholders that users can manipulate.
Differing from file handling in Microsoft Windows, where users open both source and target folders to drag files directly between them, the NeXT Shelf allows users to deposit files onto the Shelf as stand-ins. Subsequently, users navigate to the desired destination folder and drag items off the Shelf to finalize their transfer. Importantly, the original file remains intact until it is removed from the Shelf.
NeXT further enhances this concept by permitting entire destination directories to be placed on the Shelf. This feature streamlines file transfers by enabling users to drag files directly onto these directory icons. While this approach is somewhat analogous to the cut, copy, and paste functions found in Windows’ clipboard, it provides greater durability: items on the Shelf persist until explicitly deleted, whereas clipboard data is temporary.
Shelf icons often represent frequently accessed folders and applications, contributing to improved productivity. Moreover, the file manager in NeXTSTEP and OPENSTEP (FileViewer through Workspace Manager) supports multiple shelves assigned to particular directories. This capability allows users to maintain various shelves aligned with specific folder structures, offering customized file organization options.