Changes to the custom column dialogs

[chaley]

Originally Posted by davidfor

I always like fields and buttons to be disabled when they have nothing to do. When the "Apply" button gets enabled, it tells me something has changed. It's something that GUI builders don't seem to understand.

What about enabling the button if the columns are resized? In that case 'something' changed.

But, on another topic, guess how I got these errors:

Traceback (most recent call last):
  File "E:\Development\GitHub\calibre\src\calibre\gui2\preferences\main.py", line 319, in show_plugin
  File "E:\Development\GitHub\calibre\src\calibre\gui2\preferences\columns.py", line 31, in genesis
ValueError: max() arg is an empty sequence

Or maybe I should say: Guess what the state of the library I was using was in

I always forget the obvious case, the new library.

Fix submitted.

EDIT: Fix committed

[davidfor]

Originally Posted by chaley

What about enabling the button if the columns are resized? In that case 'something' changed.

I'll give you that one. But, at some point, I'll probably be looking for what column changed before I remember.

I always forget the obvious case, the new library.

Fix submitted.

And tested.