another feature request

[muh muh]

In the file list panel, I noticed that the menu option Edit>Calculate Occupied Space when used on directories works very quickly, even on large directories! This is great!

My request is:

Provide an option to automatically Calculate Occupied Space on directories in the file list panel. The number could  be displayed in red until the space is finished calculating, to notify the user in case a directory is taking a long time (although I have not yet encountered this). Also, right-clicking on the size value, when red, would allow the user to "Stop calculating", just in case.