[gnome-music/wip/jfelder/playback-status-v4: 143/147] songwidget: Factor out songwidget state

[Jean Felder <jfelder src gnome org>]

commit 7679f104190463509b043b4af115732840d93b48
Author: Jean Felder <jfelder src gnome org>
Date:   Fri Jan 10 00:52:18 2020 +0100

    songwidget: Factor out songwidget state
    
    And rename it to SongState as it is more like a CoreSong state in
    relation to a playlist.
    SongState will be used by TwoLineWidget introduced in the next
    commit.

 gnomemusic/coremodel.py          | 14 +++++++-------
 gnomemusic/mpris.py              |  6 +++---
 gnomemusic/player.py             | 18 +++++++++---------
 gnomemusic/utils.py              |  7 +++++++
 gnomemusic/widgets/songwidget.py | 25 ++++++++-----------------
 5 files changed, 34 insertions(+), 36 deletions(-)
---
diff --git a/gnomemusic/coremodel.py b/gnomemusic/coremodel.py
index 2a3f7967a..b7487bbd4 100644
--- a/gnomemusic/coremodel.py
+++ b/gnomemusic/coremodel.py
@@ -34,7 +34,7 @@ from gnomemusic.coresong import CoreSong
 from gnomemusic.grilowrappers.grltrackerplaylists import Playlist
 from gnomemusic.player import PlayerPlaylist
 from gnomemusic.songliststore import SongListStore
-from gnomemusic.widgets.songwidget import SongWidget
+from gnomemusic.utils import SongState
 import gnomemusic.utils as utils
 
 
@@ -202,8 +202,8 @@ class CoreModel(GObject.GObject):
         """
         if model is self._previous_playlist_model:
             for song in self._playlist_model:
-                if song.props.state == SongWidget.State.PLAYING:
-                    song.props.state = SongWidget.State.PLAYED
+                if song.props.state == SongState.PLAYING:
+                    song.props.state = SongState.PLAYED
 
             self.emit("playlist-loaded", playlist_type)
             return
@@ -225,10 +225,10 @@ class CoreModel(GObject.GObject):
 
             self._playlist_model.splice(position, removed, songs_list)
 
-        played_states = [SongWidget.State.PLAYING, SongWidget.State.PLAYED]
+        played_states = [SongState.PLAYING, SongState.PLAYED]
         for song in self._playlist_model:
             if song.props.state in played_states:
-                song.props.state = SongWidget.State.UNPLAYED
+                song.props.state = SongState.UNPLAYED
 
         if self._player_signal_id is not None:
             self._current_playlist_model.disconnect(self._player_signal_id)
@@ -274,8 +274,8 @@ class CoreModel(GObject.GObject):
             for song in self._songliststore.props.model:
                 songs_added.append(song)
 
-                if song.props.state == SongWidget.State.PLAYING:
-                    song.props.state = SongWidget.State.PLAYED
+                if song.props.state == SongState.PLAYING:
+                    song.props.state = SongState.PLAYED
 
         elif playlist_type == PlayerPlaylist.Type.SEARCH_RESULT:
             self._current_playlist_model = self._songs_search_flatten
diff --git a/gnomemusic/mpris.py b/gnomemusic/mpris.py
index 8a8b90c9d..483e43493 100644
--- a/gnomemusic/mpris.py
+++ b/gnomemusic/mpris.py
@@ -29,7 +29,7 @@ from gi.repository import Gio, GLib
 from gnomemusic.grilowrappers.grltrackerplaylists import Playlist
 from gnomemusic.gstplayer import Playback
 from gnomemusic.player import RepeatMode
-from gnomemusic.widgets.songwidget import SongWidget
+from gnomemusic.utils import SongState
 
 
 class DBusInterface:
@@ -691,8 +691,8 @@ class MPRIS(DBusInterface):
         new_coresong = self._player_model[new_position]
 
         self._player.play(new_coresong)
-        current_coresong.props.state = SongWidget.State.PLAYED
-        new_coresong.props.state = SongWidget.State.PLAYING
+        current_coresong.props.state = SongState.PLAYED
+        new_coresong.props.state = SongState.PLAYING
 
     def _track_list_replaced(self, track_paths, current_song_path):
         """Indicate that the entire tracklist has been replaced.
diff --git a/gnomemusic/player.py b/gnomemusic/player.py
index bdf85daf8..a2dc13f9c 100644
--- a/gnomemusic/player.py
+++ b/gnomemusic/player.py
@@ -32,7 +32,7 @@ from gi.repository import GObject, GstPbutils
 
 from gnomemusic.coresong import CoreSong
 from gnomemusic.gstplayer import GstPlayer, Playback
-from gnomemusic.widgets.songwidget import SongWidget
+from gnomemusic.utils import SongState
 import gnomemusic.utils as utils
 
 
@@ -144,7 +144,7 @@ class PlayerPlaylist(GObject.GObject):
         else:
             next_position = self.props.position + 1
 
-        self._model[self.props.position].props.state = SongWidget.State.PLAYED
+        self._model[self.props.position].props.state = SongState.PLAYED
         self._position = next_position
 
         next_song = self._model[next_position]
@@ -152,7 +152,7 @@ class PlayerPlaylist(GObject.GObject):
             return self.next()
 
         self._update_model_recent()
-        next_song.props.state = SongWidget.State.PLAYING
+        next_song.props.state = SongState.PLAYING
         self._validate_next_song()
         return True
 
@@ -173,7 +173,7 @@ class PlayerPlaylist(GObject.GObject):
         else:
             previous_position = self.props.position - 1
 
-        self._model[self.props.position].props.state = SongWidget.State.PLAYED
+        self._model[self.props.position].props.state = SongState.PLAYED
         self._position = previous_position
 
         previous_song = self._model[previous_position]
@@ -181,7 +181,7 @@ class PlayerPlaylist(GObject.GObject):
             return self.previous()
 
         self._update_model_recent()
-        self._model[previous_position].props.state = SongWidget.State.PLAYING
+        self._model[previous_position].props.state = SongState.PLAYING
         self._validate_previous_song()
         return True
 
@@ -206,11 +206,11 @@ class PlayerPlaylist(GObject.GObject):
         if (n_items != 0
                 and n_items > self._position):
             current_song = self._model[self._position]
-            if current_song.props.state == SongWidget.State.PLAYING:
+            if current_song.props.state == SongState.PLAYING:
                 return current_song
 
         for idx, coresong in enumerate(self._model):
-            if coresong.props.state == SongWidget.State.PLAYING:
+            if coresong.props.state == SongState.PLAYING:
                 self._position = idx
                 self._update_model_recent()
                 return coresong
@@ -235,7 +235,7 @@ class PlayerPlaylist(GObject.GObject):
             else:
                 position = 0
             song = self._model.get_item(position)
-            song.props.state = SongWidget.State.PLAYING
+            song.props.state = SongState.PLAYING
             self._position = position
             self._validate_song(song)
             self._validate_next_song()
@@ -244,7 +244,7 @@ class PlayerPlaylist(GObject.GObject):
 
         for idx, coresong in enumerate(self._model):
             if coresong == song:
-                coresong.props.state = SongWidget.State.PLAYING
+                coresong.props.state = SongState.PLAYING
                 self._position = idx
                 self._validate_song(song)
                 self._validate_next_song()
diff --git a/gnomemusic/utils.py b/gnomemusic/utils.py
index ff2635411..f823fd35a 100644
--- a/gnomemusic/utils.py
+++ b/gnomemusic/utils.py
@@ -47,6 +47,13 @@ class ArtSize(Enum):
         self.height = height
 
 
+class SongState(IntEnum):
+    """The state of a CoreSong"""
+    PLAYED = 0
+    PLAYING = 1
+    UNPLAYED = 2
+
+
 class SongStateIcon(Enum):
     """Enum for icons used in song playing and validation"""
     ERROR = "dialog-error-symbolic"
diff --git a/gnomemusic/widgets/songwidget.py b/gnomemusic/widgets/songwidget.py
index 1c494e07a..8a28f2ce0 100644
--- a/gnomemusic/widgets/songwidget.py
+++ b/gnomemusic/widgets/songwidget.py
@@ -22,8 +22,6 @@
 # code, but you are not obligated to do so.  If you do not wish to do so,
 # delete this exception statement from your version.
 
-from enum import IntEnum
-
 import gi
 gi.require_version('Dazzle', '1.0')
 from gi.repository import Gdk, GObject, Gtk
@@ -31,7 +29,7 @@ from gi.repository.Dazzle import BoldingLabel  # noqa: F401
 
 from gnomemusic import utils
 from gnomemusic.coresong import CoreSong
-from gnomemusic.utils import SongStateIcon
+from gnomemusic.utils import SongState, SongStateIcon
 from gnomemusic.widgets.starimage import StarImage  # noqa: F401
 
 
@@ -75,13 +73,6 @@ class SongWidget(Gtk.EventBox):
     _play_icon = Gtk.Template.Child()
     _size_group = Gtk.Template.Child()
 
-    class State(IntEnum):
-        """The state of the SongWidget
-        """
-        PLAYED = 0
-        PLAYING = 1
-        UNPLAYED = 2
-
     def __init__(self, coresong, can_dnd=False, show_artist_and_album=False):
         """Instanciates a SongWidget
 
@@ -93,7 +84,7 @@ class SongWidget(Gtk.EventBox):
 
         self.props.coresong = coresong
         self._selection_mode = False
-        self._state = SongWidget.State.UNPLAYED
+        self._state = SongState.UNPLAYED
 
         self.props.coresong.bind_property(
             "track-number", self, "song-number",
@@ -257,19 +248,19 @@ class SongWidget(Gtk.EventBox):
     def state(self):
         """State of the widget
 
-        :returns: Widget state
-        :rtype: SongWidget.State
+        :returns: CoreSong state
+        :rtype: SongState
         """
         return self._state
 
     @state.setter  # type: ignore
     def state(self, value):
-        """Set state of the of widget
+        """Set state of the widget
 
         This influences the look of the widgets label and if there is a
         song play indicator being shown.
 
-        :param SongWidget.State value: Widget state
+        :param SongState value: CoreSong state
         """
         self._state = value
 
@@ -285,9 +276,9 @@ class SongWidget(Gtk.EventBox):
             style_ctx.add_class("dim-label")
             return
 
-        if value == SongWidget.State.PLAYED:
+        if value == SongState.PLAYED:
             style_ctx.add_class('dim-label')
-        elif value == SongWidget.State.PLAYING:
+        elif value == SongState.PLAYING:
             self._play_icon.set_visible(True)
             style_ctx.add_class('playing-song-label')