Due: Thursday, October 14

Please upload your files to CSNS. The files should include all the source code, documentation (if any), and an HTML file hw2.html which contains a link to your application on the CS3 server. Note that file uploading will be disabled automatically after 11:59PM of the due date, so please turn in your work on time.

[Readings]

• CS320 Textbook.
• The File class in CSNS.

[Online File Manager]

1. (40pt)  Folder Display.

When the application is requested without any parameter, it displays the content of the top level folder, which we'll refer to as the root folder. For example:

When a user clicks on a folder, the content of that folder should be displayed. For example:

Note that

• The folder ".." is a special folder that represents the parent folder of current folder. The root folder does not have a parent folder.
• The "Current Folder" label should display the full path of the current folder, not just the folder name. For instance, suppose Folder1 contains Folder2 which contains Folder3. When Folder3 is displayed, the current folder label should show /Folder1/Folder2/Folder3.
• A folder icon should be displayed beside the name of a folder, and a book icon  should be displayed beside the name of a file.

2. (20pt) Create New Folder.

A user may click on "Create New Folder" to create a new folder under currently selected folder. For example:

Note that

• After the new folder is created, the application should redirect back to the display of the current folder.
• Your application must be able to handle folder names that contain white spaces.

3. (30pt) File Upload and Download.

A user may click on "Upload File" to upload a file to the currently selected folder. For example:

And a user may click on the name of a file to download it.

Note that

• All the files uploaded must be stored under the WEB-INF/files folder under your application root directory. You will not receive any credit for this exercise if you store the files anywhere else.
• After a file is uploaded, the application should redirect back to the display of the current folder.
• Your application must be able to handle file names that contain white spaces.
• Two files with the same name but are uploaded to different folders should be treated as different files.
• Two files with the same name and are uploaded to the same folder can be treated either as the same file so the second file uploaded overwrites the first one, or as different files which means the system will keep both files.

4. (20pt) Rename.

A user may click on "Rename" to rename a file or a folder. For example:

Note that

• The text box should be pre-filled with the current name of the file or folder.
• After the file or folder is renamed, the application should redirect back to the display of the current folder.

[Deployment on CS3]

To receive any credit at all for this assignment, you must deploy your application on the CS3 server. If you are using Dynamic Web Project in Eclipse, deployment only takes two simple steps:

• Transfer all the files under the WebContent folder to the www folder under your account on CS3.
• Transfer all the files under the build/classes folder to the www/WEB-INF/classes folder under your account on CS3.

Note that subfolders must be preserved during file transfer. After deployment you should check your application on CS3 and make sure it runs properly.