[gnome-music/wip/jfelder/artistsview-selection: 3/8] artistsview: Select songs instead of artists

[Jean Felder <jfelder src gnome org>]

commit 5a027a0af835b797e3e712bbcbe834518f2661de
Author: Jean Felder <jfelder src gnome org>
Date:   Mon Feb 3 09:38:56 2020 +0100

    artistsview: Select songs instead of artists
    
    It is far more common to add individual songs than adding entire
    artists.
    
    It is always possible to select all songs of an artist with the Ctrl+a
    shortcut (select all).
    
    Closes: #26
    Related: #146

 gnomemusic/views/artistsview.py | 42 +++++++++++++++--------------------------
 1 file changed, 15 insertions(+), 27 deletions(-)
---
diff --git a/gnomemusic/views/artistsview.py b/gnomemusic/views/artistsview.py
index a5454ae5..925f3277 100644
--- a/gnomemusic/views/artistsview.py
+++ b/gnomemusic/views/artistsview.py
@@ -23,7 +23,7 @@
 # delete this exception statement from your version.
 
 from gettext import gettext as _
-from gi.repository import Gdk, Gtk
+from gi.repository import GObject, Gtk
 
 from gnomemusic.views.baseview import BaseView
 from gnomemusic.widgets.artistalbumswidget import ArtistAlbumsWidget
@@ -69,11 +69,6 @@ class ArtistsView(BaseView):
         self._sidebar.props.selection_mode = Gtk.SelectionMode.SINGLE
         self._sidebar.connect('row-activated', self._on_artist_activated)
 
-        self._ctrl = Gtk.GestureMultiPress().new(self._sidebar)
-        self._ctrl.props.propagation_phase = Gtk.PropagationPhase.CAPTURE
-        self._ctrl.props.button = Gdk.BUTTON_PRIMARY
-        self._ctrl.connect("released", self._on_sidebar_clicked)
-
         self._loaded_artists = []
         self._loading_id = 0
 
@@ -83,8 +78,6 @@ class ArtistsView(BaseView):
         row = ArtistTile(coreartist)
         row.props.text = coreartist.props.artist
 
-        self.bind_property("selection-mode", row, "selection-mode")
-
         return row
 
     def _on_model_items_changed(self, model, position, removed, added):
@@ -140,7 +133,6 @@ class ArtistsView(BaseView):
         # ArtistsView, to circumvent this issue.
         if (self.props.selection_mode
                 and self._window.props.active_view is self):
-            row.props.selected = not row.props.selected
             return
 
         selected_row = self._sidebar.get_selected_row()
@@ -155,7 +147,13 @@ class ArtistsView(BaseView):
             return
 
         self._artist_albums = ArtistAlbumsWidget(
-            coreartist, self._application, False)
+            coreartist, self._application, True)
+
+        self.bind_property(
+            "selection-mode", self._artist_albums, "selection-mode",
+            GObject.BindingFlags.SYNC_CREATE
+            | GObject.BindingFlags.BIDIRECTIONAL)
+
         artist_albums_frame = Gtk.Frame(
             shadow_type=Gtk.ShadowType.NONE, hexpand=True)
         artist_albums_frame.add(self._artist_albums)
@@ -168,20 +166,13 @@ class ArtistsView(BaseView):
 
         self._loaded_artists.append(coreartist.props.artist)
 
-    def _on_sidebar_clicked(self, gesture, n_press, x, y):
-        success, state = Gtk.get_current_event_state()
-        modifiers = Gtk.accelerator_get_default_mod_mask()
-        if ((state & modifiers) == Gdk.ModifierType.CONTROL_MASK
-                and not self.props.selection_mode):
-            self.props.selection_mode = True
-
     def _on_selection_mode_changed(self, widget, data=None):
         if self.get_parent().get_visible_child() != self:
             return
 
         super()._on_selection_mode_changed(widget, data)
+        self._sidebar.props.sensitive = not self.props.selection_mode
 
-        self._view.props.sensitive = not self.props.selection_mode
         if self.props.selection_mode:
             self._sidebar.props.selection_mode = Gtk.SelectionMode.NONE
         else:
@@ -199,15 +190,12 @@ class ArtistsView(BaseView):
             self._sidebar.select_row(selected_row)
             self._selected_artist = None
 
-    def _toggle_all_selection(self, selected):
-
-        def toggle_selection(child):
-            child.props.selected = selected
-
-        self._sidebar.foreach(toggle_selection)
-
     def select_all(self):
-        self._toggle_all_selection(True)
+        current_frame = self._view.get_visible_child()
+        for row in current_frame.get_child():
+            row.get_child().select_all()
 
     def deselect_all(self):
-        self._toggle_all_selection(False)
+        current_frame = self._view.get_visible_child()
+        for row in current_frame.get_child():
+            row.get_child().deselect_all()