[gnome-music] notificationspopup : Add a close button

[Jean Felder <jfelder src gnome org>]

commit 8980060c208c25549fa089d4ccb9402ccc2bb01e
Author: Chinmay Gurjar <chnmgurjar gmail com>
Date:   Mon Mar 30 16:10:59 2020 +0200

    notificationspopup : Add a close button
    
    Add a close button to the Notifications popup to close it before the
    default time.
    
    Closes: #259

 gnomemusic/widgets/notificationspopup.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)
---
diff --git a/gnomemusic/widgets/notificationspopup.py b/gnomemusic/widgets/notificationspopup.py
index 25025149..83544e59 100644
--- a/gnomemusic/widgets/notificationspopup.py
+++ b/gnomemusic/widgets/notificationspopup.py
@@ -217,9 +217,15 @@ class PlaylistNotification(Gtk.Grid):
             label=message, halign=Gtk.Align.START, hexpand=True)
         self.add(self._label)
 
+        close_button = Gtk.Button.new_from_icon_name(
+            "window-close-symbolic", Gtk.IconSize.BUTTON)
+        close_button.connect("clicked", self._close_notification)
+        close_button.props.relief = Gtk.ReliefStyle.NONE
+
         undo_button = Gtk.Button.new_with_mnemonic(_("_Undo"))
         undo_button.connect("clicked", self._undo_deletion)
         self.add(undo_button)
+        self.add(close_button)
         self.show_all()
 
         if self.type_ == PlaylistNotification.Type.PLAYLIST:
@@ -254,6 +260,13 @@ class PlaylistNotification(Gtk.Grid):
             self._playlist.undo_pending_song_deletion(
                 self._coresong, self._position)
 
+    def _close_notification(self, widget_):
+        if self._timeout_id > 0:
+            GLib.source_remove(self._timeout_id)
+            self._timeout_id = 0
+
+        self._finish_deletion()
+
     def _finish_deletion(self):
         self._notifications_popup.remove_notification(self)
         if self.type_ == PlaylistNotification.Type.PLAYLIST: