[gnome-clocks] header-bar: Use binding intruction from libadwaita

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit d18eed41f04a2f0953e3061882d4d4dd127c034e
Author: Maximiliano Sandoval R <msandova gnome org>
Date:   Tue Dec 14 00:00:08 2021 +0100

    header-bar: Use binding intruction from libadwaita

 data/ui/header-bar.ui | 5 ++---
 data/ui/window.ui     | 3 +++
 src/header-bar.vala   | 8 +-------
 3 files changed, 6 insertions(+), 10 deletions(-)
---
diff --git a/data/ui/header-bar.ui b/data/ui/header-bar.ui
index 1a2e2514..e69315ea 100644
--- a/data/ui/header-bar.ui
+++ b/data/ui/header-bar.ui
@@ -17,13 +17,13 @@
     </section>
   </menu>
   <template class="ClocksHeaderBar" parent="AdwBin">
+    <property name="title-visible" bind-source="view_switcher_title" bind-flags="sync-create"/>
     <child>
       <object class="AdwHeaderBar">
         <property name="centering_policy">strict</property>
         <child type="title">
           <object class="AdwViewSwitcherTitle" id="view_switcher_title">
-            <property name="stack" bind-source="ClocksHeaderBar" bind-property="stack" 
bind-flags="sync-create">ignore-me</property>
-            <signal name="notify::title-visible" handler="title_visible_changed"/>
+            <property name="stack" bind-source="ClocksHeaderBar" bind-property="stack" 
bind-flags="sync-create"/>
             <property name="title" translatable="yes">Clocks</property>
           </object>
         </child>
@@ -78,5 +78,4 @@
       </object>
     </child>
   </template>
-  <object class="AdwViewStack" id="ignore-me"></object>
 </interface>
diff --git a/data/ui/window.ui b/data/ui/window.ui
index bca54f85..ae6509ee 100644
--- a/data/ui/window.ui
+++ b/data/ui/window.ui
@@ -81,6 +81,9 @@
                 <child>
                   <object class="AdwViewSwitcherBar" id="switcher_bar">
                     <property name="stack">stack</property>
+                    <binding name="reveal">
+                      <lookup name="title-visible">header_bar</lookup>
+                    </binding>
                   </object>
                 </child>
               </object>
diff --git a/src/header-bar.vala b/src/header-bar.vala
index ab5c59be..3eb8f9ba 100644
--- a/src/header-bar.vala
+++ b/src/header-bar.vala
@@ -47,16 +47,10 @@ public class Clocks.HeaderBar : Adw.Bin {
     public Adw.ViewStack stack { get; set; }
     public Adw.ViewSwitcherBar switcher_bar { get; set; }
     public string? new_label { get; set; }
+    public bool title_visible { get; set; }
 
     private ButtonMode _button_mode;
 
     [GtkChild]
     private unowned Adw.ViewStack start_button_stack;
-    [GtkChild]
-    private unowned Adw.ViewSwitcherTitle view_switcher_title;
-
-    [GtkCallback]
-    private void title_visible_changed () {
-        switcher_bar.reveal = view_switcher_title.title_visible;
-    }
 }