[geary/mjog/email-plugins: 5/13] Components.InfoBarStack: Use GObject style ctor

[Michael Gratton <mjog src gnome org>]

commit 0e85cc3861447cf5b9eb91c5cb89fbc7ade1d5e1
Author: Michael Gratton <mike vee net>
Date:   Sun Mar 22 23:48:50 2020 +1100

    Components.InfoBarStack: Use GObject style ctor
    
    This makes it possible to use these widgets in GTK builder files.

 src/client/application/application-main-window.vala  |  8 +++++---
 src/client/components/components-info-bar-stack.vala | 13 +++----------
 2 files changed, 8 insertions(+), 13 deletions(-)
---
diff --git a/src/client/application/application-main-window.vala 
b/src/client/application/application-main-window.vala
index 373be3ea..cafb5e24 100644
--- a/src/client/application/application-main-window.vala
+++ b/src/client/application/application-main-window.vala
@@ -283,7 +283,7 @@ public class Application.MainWindow :
     public ConversationViewer conversation_viewer { get; private set; }
 
     public Components.InfoBarStack conversation_list_info_bars {
-        get; private set; default = new Components.InfoBarStack.exclusive();
+        get; private set; default = new Components.InfoBarStack();
     }
 
     public StatusBar status_bar { get; private set; default = new StatusBar(); }
@@ -333,8 +333,7 @@ public class Application.MainWindow :
     [GtkChild]
     private Gtk.Overlay overlay;
 
-    private Components.InfoBarStack info_bars =
-        new Components.InfoBarStack.exclusive();
+    private Components.InfoBarStack info_bars = new Components.InfoBarStack();
 
     private Gtk.InfoBar offline_infobar;
 
@@ -491,6 +490,9 @@ public class Application.MainWindow :
             this.get_style_context().add_class("devel");
         }
 
+        this.info_bars.shadow_type = IN;
+        this.conversation_list_info_bars.shadow_type = IN;
+
         // Edit actions
         this.edit_actions.add_action_entries(EDIT_ACTIONS, this);
         insert_action_group(Action.Edit.GROUP_NAME, this.edit_actions);
diff --git a/src/client/components/components-info-bar-stack.vala 
b/src/client/components/components-info-bar-stack.vala
index 3328418d..bd91fbf0 100644
--- a/src/client/components/components-info-bar-stack.vala
+++ b/src/client/components/components-info-bar-stack.vala
@@ -98,18 +98,11 @@ public class Components.InfoBarStack : Gtk.Frame, Geary.BaseInterface {
         get { return get_child() as Gtk.InfoBar; }
     }
 
-    private Gee.Queue<Gtk.InfoBar> available;
+    private Gee.Queue<Gtk.InfoBar> available = new SingletonQueue();
 
 
-    /**
-     * Constructs a stack that shows the most recently added info bar.
-     */
-    public InfoBarStack.exclusive() {
-        this.shadow_type = IN;
-        this.visible = false;
-        get_style_context().add_class("geary-info-bar-frame");
-
-        this.available = new SingletonQueue();
+    construct {
+        get_style_context().add_class("geary-info-bar-stack");
     }
 
     /**