Allows to change the db with an already existing db

[LoicCadour]

See description here: medInria#252

[mathildemerle]

Is it needed to be reviewed/tested or you need to still work on it?

[LoicCadour]

I need opinion about the idea, feedback, review, every thing.
Thanks

[mathildemerle]

I am currently testing this PR. I'm afraid there is a problem under Linux.

For instance, my DB address is /home/mathildemerle/.local/share/data/INRIA_IHU-LIRYC/MUSIC
And when i click on "Select directory" the browser open /home/mathildemerle/Dev.

I can't write the address to /home/mathildemerle/.local/share/data/INRIA_IHU-LIRYC and i can't go back in the directory tree. So i needed to find a proposed "/home/mathildemerle" and display hidden files (right click then "Show hidden files").

It can be important to add a text saying that changing the database will be ok after restarting if the user use the Save button.

Otherwise, it's working. I changed my database. I had this problem before (when i changed the name of the soft, which is the name of the DB), and i needed to change my current db in a terminal. So, good for me.

In conclusion, can be improved :
1° open the window to /home/mathildemerle/.local/share/data/INRIA_IHU-LIRYC (means, above the current db). But it can be a problem of hidden files.
2° allow to go back in directory tree at the opening of the window.
3° allow to display hidden files if needed by the address of db.
4° and display a text asking to save in order to keep the new db.

:)

[mathildemerle]

(sorry, i had this problem when i changed "INRIA_IHU-LIRYC", not the same of the soft. So, on my computer, there is two db : inria and INRIA_IHU-LIRYC)

[LoicCadour]

I need feedback on the pertinence of this PR to know if I should spend time on improving it or close it.
Thx

[mikejbuckingham]

Did you resolve the issue Mathilde had? If so, then I'm happy with this, if it works.

[LoicCadour]

Well, I am afraid I can't do much about it (except the mention of Saving after setting the directory).

From my research, showing hidden files cannot be done by qt. On Mac, Cmd+Shift+ . does the work, on Linux Ctrl + H (according to stackOverflow), ...

Opening the file dialog to the directory above the db is done.

Finally, "go back in directory tree ", I can't find a way to fo that with QFileDialog.

In the meantime, you can write the path in the QLineEdit, so it's a way to overcome these pbs.

[mathildemerle]

Ok for me

[LoicCadour]

The destination branch is not the correct one. I close it