More organizing images

[mredaelli]

As a follow up to #366 (from which I will copy the awesome custom command), I think two things would make vimiv easier to use for moving stuff around:

• is it possible to support dragging marked files to a folder library?
• is it at all possible to have completion suggestion in the argument of the copy_marked argument?

[karlch]

Hey, thanks for your interest and sorry for the delay, in the end I decided to take a few days off of programming over the holidays.

I am not 100-percent sure I understand the request.

• Would this mean dragging with the mouse? To some file manager? Or to another vimiv instance?
• This would be a simple path completion? In this case I can only think of a bit of a dirty hack as the actual completion models are currently not exposed via the api. Using the code in vimiv.completions which could break / change at any time as it is considered internal we would have something along:

import os
import shutil

from vimiv import api
from vimiv.completion import completionmodels


@api.commands.register()
def copy_marked(target: str):
    """Copy all marked images to target."""
    target = os.path.abspath(os.path.expanduser(target))
    if not os.path.isdir(target):
        raise api.commands.CommandError("target must be a directory")

    for src in api.mark.paths:
        shutil.copy(src, target)

    api.mark.mark_clear()


def init(*args, **kwargs):
    completionmodels.PathModel("copy-marked")