[gnome-music/wip/jfelder/playlist-improvements: 12/13] playlistcontrols: Add a play button

[Jean Felder <jfelder src gnome org>]

commit e5dd47791322fad96817f175c9614d70e569e212
Author: Jean Felder <jfelder src gnome org>
Date:   Thu Jan 28 02:58:57 2021 +0100

    playlistcontrols: Add a play button
    
    Related: #438

 data/ui/PlaylistControls.ui            | 59 +++++++++++++++++++++++++---------
 gnomemusic/widgets/playlistcontrols.py |  9 +++++-
 2 files changed, 52 insertions(+), 16 deletions(-)
---
diff --git a/data/ui/PlaylistControls.ui b/data/ui/PlaylistControls.ui
index cec431c05..52352ffd1 100644
--- a/data/ui/PlaylistControls.ui
+++ b/data/ui/PlaylistControls.ui
@@ -22,6 +22,13 @@
     <property name="icon_name">view-more-symbolic</property>
     <property name="icon_size">1</property>
   </object>
+  <object class="GtkImage" id="_play_image">
+    <property name="visible">True</property>
+    <property name="can_focus">False</property>
+    <property name="margin-top">1</property>
+    <property name="icon_name">media-playback-start-symbolic</property>
+    <property name="icon_size">1</property>
+  </object>
   <template class="PlaylistControls" parent="GtkBox">
     <property name="orientation">vertical</property>
     <property name="visible">True</property>
@@ -100,23 +107,45 @@
       </object>
     </child>
     <child>
-      <object class="GtkMenuButton" id="_menubutton">
+      <object class="GtkBox">
+        <property name="orientation">horizontal</property>
         <property name="visible">True</property>
-        <property name="can_focus">True</property>
-        <property name="receives_default">True</property>
-        <property name="halign">start</property>
-        <property name="valign">center</property>
-        <property name="focus_on_click">False</property>
-        <property name="menu-model">playlistMenu</property>
-        <property name="direction">none</property>
-        <property name="use_popover">True</property>
-        <property name="image">_view_more_image</property>
-        <property name="margin-bottom">8</property>
+        <property name="spacing">12</property>
         <property name="margin-top">18</property>
-        <style>
-          <class name="image-button"/>
-          <class name="circular"/>
-        </style>
+        <property name="margin-bottom">8</property>
+        <child>
+          <object class="GtkButton" id="_play_button">
+            <property name="visible">True</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+            <property name="image">_play_image</property>
+            <property name="always_show_image">True</property>
+            <property name="tooltip-text" translatable="yes">Play</property>
+            <property name="valign">center</property>
+            <signal name="clicked" handler="_on_play_button_clicked" swapped="no"/>
+            <style>
+              <class name="circular"/>
+            </style>
+          </object>
+        </child>
+        <child>
+          <object class="GtkMenuButton" id="_menubutton">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="halign">start</property>
+            <property name="valign">center</property>
+            <property name="focus_on_click">False</property>
+            <property name="menu-model">playlistMenu</property>
+            <property name="direction">none</property>
+            <property name="use_popover">True</property>
+            <property name="image">_view_more_image</property>
+            <style>
+              <class name="image-button"/>
+              <class name="circular"/>
+            </style>
+          </object>
+        </child>
       </object>
     </child>
   </template>
diff --git a/gnomemusic/widgets/playlistcontrols.py b/gnomemusic/widgets/playlistcontrols.py
index 3935edec4..0637082a9 100644
--- a/gnomemusic/widgets/playlistcontrols.py
+++ b/gnomemusic/widgets/playlistcontrols.py
@@ -38,6 +38,7 @@ class PlaylistControls(Gtk.Box):
 
     _name_stack = Gtk.Template.Child()
     _name_label = Gtk.Template.Child()
+    _play_button = Gtk.Template.Child()
     _rename_controller = Gtk.Template.Child()
     _rename_entry = Gtk.Template.Child()
     _rename_done_button = Gtk.Template.Child()
@@ -102,6 +103,10 @@ class PlaylistControls(Gtk.Box):
             self._window.notifications_popup, self._application,
             PlaylistNotification.Type.PLAYLIST, self.props.playlist)
 
+    @Gtk.Template.Callback()
+    def _on_play_button_clicked(self, button: Gtk.Button) -> None:
+        self._play_action.activate()
+
     @Gtk.Template.Callback()
     def _on_rename_entry_changed(self, selection):
         selection_length = selection.props.text_length
@@ -127,7 +132,9 @@ class PlaylistControls(Gtk.Box):
             "{} Song", "{} Songs", self.props.playlist.count).format(
                 self.props.playlist.count)
 
-        self._play_action.props.enabled = self.props.playlist.props.count > 0
+        empty_pl = (self.props.playlist.props.count == 0)
+        self._play_button.props.sensitive = not empty_pl
+        self._play_action.props.enabled = not empty_pl
 
     def _enable_rename_playlist(self, menuitem, data=None):
         self._name_stack.props.visible_child_name = "renaming_dialog"