Template function for current book

[BetterRed]

I'd like to put an Up arrow emblem under the current book in the upcoming shelf view - i.e. the one that's highlighted - which can be hard to see - but I can't fathom how to finagle the equivalent of an is_current template function.

Any ideas?

BR

[kovidgoyal]

Here is the code for a python template:

python:
def evaluate(book, context):
        from calibre.gui2.ui import get_gui
        v = get_gui().library_view
        row = v.currentIndex().row()
        if row < 0:
            return 'no'
        try:
            return 'yes' if v.model().db.data.index_to_id(row) == book.id else 'no'
        except Exception:
            return 'no'

Then in the emblem rule simply check if the column base don this template is yes. Note I havent actually tested this, but I see no reason why it wont work.

[BetterRed]

Thanks, but it returns 'no' for selected book



I just copied and pasted (I'm good at that) but I've attached the saved python function.

BR

[kovidgoyal]

Yeah actually thinking about it some more, I doubt this whole approach will work, template results are cached and the cache isnt invalidated when the current book changes. So it will give stale results anyway.

[BetterRed]

Oh well, back to the drawing board

Thanks anyway