[gnome-music/wip/mschraal/core: 59/208] core/grilo groundwork for artist



commit cc1c524b191e2466532982f2e69769d5631a60db
Author: Marinus Schraal <mschraal gnome org>
Date:   Fri May 31 12:56:16 2019 +0200

    core/grilo groundwork for artist

 gnomemusic/coreartist.py                     | 27 +++++++++++++++++++++++
 gnomemusic/coregrilo.py                      |  6 +++--
 gnomemusic/coremodel.py                      |  5 ++++-
 gnomemusic/grilowrappers/grltrackersource.py | 33 +++++++++++++++++++++++++++-
 4 files changed, 67 insertions(+), 4 deletions(-)
---
diff --git a/gnomemusic/coreartist.py b/gnomemusic/coreartist.py
new file mode 100644
index 00000000..5666123f
--- /dev/null
+++ b/gnomemusic/coreartist.py
@@ -0,0 +1,27 @@
+import gi
+gi.require_version('Grl', '0.3')
+from gi.repository import Grl, GObject
+
+from gnomemusic import log
+from gnomemusic.grilo import grilo
+import gnomemusic.utils as utils
+
+
+class CoreArtist(GObject.GObject):
+    """Exposes a Grl.Media with relevant data as properties
+    """
+
+    artist = GObject.Property(type=str)
+    media = GObject.Property(type=Grl.Media)
+    selected = GObject.Property(type=bool, default=False)
+
+    @log
+    def __init__(self, media):
+        super().__init__()
+
+        self.update(media)
+
+    @log
+    def update(self, media):
+        self.props.media = media
+        self.props.artist = utils.get_artist_name(media)
diff --git a/gnomemusic/coregrilo.py b/gnomemusic/coregrilo.py
index 43bce9fd..a524593d 100644
--- a/gnomemusic/coregrilo.py
+++ b/gnomemusic/coregrilo.py
@@ -13,11 +13,12 @@ class CoreGrilo(GObject.GObject):
     def __repr__(self):
         return "<CoreGrilo>"
 
-    def __init__(self, model, _hash, url_hash, albums_model):
+    def __init__(self, model, _hash, url_hash, albums_model, artists_model):
         super().__init__()
 
         self._model = model
         self._albums_model = albums_model
+        self._artists_model = artists_model
         self._hash = _hash
         # Only way to figure out removed items
         self._url_table = url_hash
@@ -40,7 +41,8 @@ class CoreGrilo(GObject.GObject):
         print(source.props.source_id)
         if source.props.source_id == "grl-tracker-source":
             self._tracker_source = GrlTrackerSource(
-                source, self._hash, self._model, self._albums_model)
+                source, self._hash, self._model, self._albums_model,
+                self._artists_model)
             self._tracker_source = source
             print(self._tracker_source, "added")
 
diff --git a/gnomemusic/coremodel.py b/gnomemusic/coremodel.py
index 73b658f9..fd491c18 100644
--- a/gnomemusic/coremodel.py
+++ b/gnomemusic/coremodel.py
@@ -4,6 +4,7 @@ from gi.repository import Dazzle, GObject, Gio, Gfm
 from gi._gi import pygobject_new_full
 
 from gnomemusic import log
+from gnomemusic.coreartist import CoreArtist
 from gnomemusic.coregrilo import CoreGrilo
 from gnomemusic.coresong import CoreSong
 from gnomemusic.grilo import grilo
@@ -18,12 +19,14 @@ class CoreModel(GObject.GObject):
         self._test = Gfm.FilterListModel()
         self._model = Gio.ListStore.new(CoreSong)
         self._album_model = Gio.ListStore()
+        self._artist_model = Gio.ListStore.new(CoreArtist)
         self._album_store = None
         self._hash = {}
         self._url_hash = {}
 
         self._grilo = CoreGrilo(
-            self._model, self._hash, self._url_hash, self._album_model)
+            self._model, self._hash, self._url_hash, self._album_model,
+            self._artist_model)
         # self._grilo.connect("media-removed", self._on_media_removed)
 
     @log
diff --git a/gnomemusic/grilowrappers/grltrackersource.py b/gnomemusic/grilowrappers/grltrackersource.py
index 22baf7ee..c371c18b 100644
--- a/gnomemusic/grilowrappers/grltrackersource.py
+++ b/gnomemusic/grilowrappers/grltrackersource.py
@@ -3,6 +3,7 @@ gi.require_version('Grl', '0.3')
 from gi.repository import Grl, GObject
 
 from gnomemusic.corealbum import CoreAlbum
+from gnomemusic.coreartist import CoreArtist
 from gnomemusic.coresong import CoreSong
 
 
@@ -29,12 +30,13 @@ class GrlTrackerSource(GObject.GObject):
     def __repr__(self):
         return "<GrlTrackerSource>"
 
-    def __init__(self, source, _hash, model, albums_model):
+    def __init__(self, source, _hash, model, albums_model, artists_model):
         super().__init__()
 
         self._source = source
         self._model = model
         self._albums_model = albums_model
+        self._artists_model = artists_model
         self._hash = _hash
         # self._table = table
         # Only way to figure out removed items
@@ -52,6 +54,7 @@ class GrlTrackerSource(GObject.GObject):
 
         self._initial_fill(self._source)
         self._initial_albums_fill(self._source)
+        self._initial_artists_fill(self._source)
 
         self._source.connect("content-changed", self._on_content_changed)
 
@@ -190,3 +193,31 @@ class GrlTrackerSource(GObject.GObject):
 
         album = CoreAlbum(media)
         self._albums_model.append(album)
+
+    def _initial_artists_fill(self, source):
+        query = """
+        SELECT
+            rdf:type(?artist_class)
+            tracker:id(?artist_class) AS ?id
+            nmm:artistName(?artist_class) AS ?artist
+        {
+            ?artist_class a nmm:Artist .
+        }
+        """.replace('\n', ' ').strip()
+
+        options = self._fast_options.copy()
+
+        source.query(
+            query, self.METADATA_KEYS, options, self._add_to_artists_model)
+
+    def _add_to_artists_model(self, source, op_id, media, user_data, error):
+        if error:
+            print("ERROR", error)
+            return
+
+        if not media:
+            print("NO MEDIA", source, op_id, media, error)
+            return
+
+        artist = CoreArtist(media)
+        self._artists_model.append(artist)


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