# Copyright 2022 (c) Anna Schumaker.
"""Widgets for information about the current track."""
from gi.repository import GObject
from gi.repository import GLib
from gi.repository import Gtk
from . import label


class TagInfo(Gtk.ScrolledWindow):
    """A widget for displaying information about the current track."""

    title = GObject.Property(type=str)
    album = GObject.Property(type=str)
    artist = GObject.Property(type=str)
    album_artist = GObject.Property(type=str)
    prefer_artist = GObject.Property(type=bool, default=True)

    def __init__(self):
        """Initialize the TagInfo widget."""
        super().__init__(hexpand=True, vexpand=True)
        self._box = Gtk.Box.new(Gtk.Orientation.VERTICAL, 0)
        self._title = label.Label()
        self._album = label.Label(prefix="from ")
        self._artist = label.ArtistLabel(prefix="by ")
        self._saved_height = 0
        self._idle_id = None

        self.bind_property("title", self._title, "text")
        self.bind_property("album", self._album, "text")
        self.bind_property("artist", self._artist, "artist")
        self.bind_property("album-artist", self._artist, "album-artist")
        self.bind_property("prefer-artist", self._artist, "prefer-artist",
                           GObject.BindingFlags.BIDIRECTIONAL)

        self._box.append(self._title)
        self._box.append(self._album)
        self._box.append(self._artist)
        self.set_child(self._box)

    def __set_label_size(self):
        self._title.size = self._saved_height / 2.5
        for tag in [self._album, self._artist]:
            tag.size = self._saved_height / 5
        self._idle_id = None
        return GLib.SOURCE_REMOVE

    def do_size_allocate(self, width, height, baseline) -> None:
        """Monitor for size changes."""
        Gtk.ScrolledWindow.do_size_allocate(self, width, height, baseline)
        if height != self._saved_height:
            self._saved_height = height
            if not self._idle_id:
                self._idle_id = GLib.idle_add(self.__set_label_size)