[gnome-music/wip/jfelder/lastfm-ui-part-2: 6/7] appmenu: Add a menu to configure Last.fm scrobbler

[Jean Felder <jfelder src gnome org>]

commit a62335645b2c06958aafc54556b1aced25423e5d
Author: Jean Felder <jfelder src gnome org>
Date:   Tue Jan 14 21:06:37 2020 +0100

    appmenu: Add a menu to configure Last.fm scrobbler
    
    The LastfmDialog can be launched if a Last.fm account can be
    configured (scrobbler's state is at least NOT_CONFIGURED).
    If Goa Last.fm support is disabled, the button stays insensitive.
    
    Related: #218

 data/ui/AppMenu.ui            |  2 +-
 gnomemusic/application.py     |  7 +++++++
 gnomemusic/widgets/appmenu.py | 13 ++++++++++++-
 3 files changed, 20 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/AppMenu.ui b/data/ui/AppMenu.ui
index ae301568..82168527 100644
--- a/data/ui/AppMenu.ui
+++ b/data/ui/AppMenu.ui
@@ -15,8 +15,8 @@
             <property name="can_focus">False</property>
             <property name="halign">fill</property>
             <property name="hexpand">False</property>
-            <property name="sensitive">False</property>
             <property name="visible">True</property>
+            <property name="action_name">app.lastfm-configure</property>
             <property name="text" translatable="yes">Last.fm Account</property>
           </object>
           <packing>
diff --git a/gnomemusic/application.py b/gnomemusic/application.py
index af57125b..1ec542f6 100644
--- a/gnomemusic/application.py
+++ b/gnomemusic/application.py
@@ -43,6 +43,7 @@ from gnomemusic.pauseonsuspend import PauseOnSuspend
 from gnomemusic.player import Player
 from gnomemusic.scrobbler import LastFmScrobbler
 from gnomemusic.widgets.aboutdialog import AboutDialog
+from gnomemusic.widgets.lastfmdialog import LastfmDialog
 from gnomemusic.window import Window
 
 
@@ -151,6 +152,7 @@ class Application(Gtk.Application):
         action_entries = [
             ('about', self._about, None),
             ("help", self._help, ("app.help", ["F1"])),
+            ("lastfm-configure", self._lastfm_account, None),
             ("quit", self._quit, ("app.quit", ["<Ctrl>Q"]))
         ]
 
@@ -167,6 +169,11 @@ class Application(Gtk.Application):
         except GLib.Error:
             self._log.message("Help handler not available.")
 
+    def _lastfm_account(self, action, param):
+        lastfm_dialog = LastfmDialog(self._window, self._lastfm_scrobbler)
+        lastfm_dialog.run()
+        lastfm_dialog.destroy()
+
     def _about(self, action, param):
         about = AboutDialog()
         about.props.transient_for = self._window
diff --git a/gnomemusic/widgets/appmenu.py b/gnomemusic/widgets/appmenu.py
index 997be53d..4b3598c9 100644
--- a/gnomemusic/widgets/appmenu.py
+++ b/gnomemusic/widgets/appmenu.py
@@ -45,13 +45,24 @@ class AppMenu(Gtk.PopoverMenu):
 
         self._lastfm_switcher_id = None
 
+        self._lastfm_configure_action = application.lookup_action(
+            "lastfm-configure")
+
         self._lastfm_scrobbler = application.props.lastfm_scrobbler
         self._lastfm_scrobbler.connect(
             "notify::can-scrobble", self._on_scrobbler_state_changed)
+        self._on_scrobbler_state_changed(None, None)
 
     def _on_scrobbler_state_changed(self, klass, args):
         state = self._lastfm_scrobbler.props.account_state
-        if state <= GoaLastFM.State.NOT_CONFIGURED:
+
+        if state == GoaLastFM.State.NOT_AVAILABLE:
+            self._lastfm_configure_action.props.enabled = False
+            return
+
+        self._lastfm_configure_action.props.enabled = True
+
+        if state == GoaLastFM.State.NOT_CONFIGURED:
             self._lastfm_box.props.sensitive = False
             if self._lastfm_switcher_id is not None:
                 self._lastfm_switch.disconnect(self._lastfm_switcher_id)