[gnome-clocks/bilelmoussaoui/adaptive-headerbar] Switch between the HdySqueezer and HdyViewSwitcherBar on small size

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit 9de7739e20c423c0e8ef1d0e5e6bb38ce335544d
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Thu Sep 26 15:04:52 2019 +0200

    Switch between the HdySqueezer and HdyViewSwitcherBar on small size

 data/ui/window.ui | 35 ++++++++++++++++++++++++++++++++---
 src/window.vala   | 16 ++++++++++++++++
 2 files changed, 48 insertions(+), 3 deletions(-)
---
diff --git a/data/ui/window.ui b/data/ui/window.ui
index 676beb0..f545ca1 100644
--- a/data/ui/window.ui
+++ b/data/ui/window.ui
@@ -95,12 +95,41 @@
       </object>
     </child>
     <child>
-      <object class="GtkStack" id="stack">
+            <object class="GtkBox">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
-        <property name="vexpand">True</property>
-        <property name="hexpand">True</property>
+        <property name="orientation">vertical</property>
+        <child>
+          <object class="GtkStack" id="stack">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="hexpand">True</property>
+            <property name="vexpand">True</property>
+            <child>
+              <placeholder/>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">True</property>
+            <property name="fill">True</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="HdyViewSwitcherBar" id="switcher_bar">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="stack">stack</property>
+            <property name="reveal">True</property>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">1</property>
+          </packing>
+        </child>
       </object>
+
     </child>
   </template>
 </interface>
diff --git a/src/window.vala b/src/window.vala
index bae6a67..bfadde6 100644
--- a/src/window.vala
+++ b/src/window.vala
@@ -37,7 +37,16 @@ public class Window : Gtk.ApplicationWindow {
     [GtkChild]
     private Gtk.Stack stack;
     [GtkChild]
+    private Hdy.ViewSwitcherBar switcher_bar;
+    [GtkChild]
     private Hdy.Squeezer squeezer;
+    [GtkChild]
+    private Hdy.ViewSwitcher title_wide_switcher;
+    [GtkChild]
+    private Hdy.ViewSwitcher title_narrow_switcher;
+    [GtkChild]
+    private Gtk.Box title_text;
+
     [GtkChild]
     private Gtk.MenuButton menu_button;
     private GLib.Settings settings;
@@ -89,6 +98,13 @@ public class Window : Gtk.ApplicationWindow {
             update_header_bar ();
         });
 
+        this.size_allocate.connect((widget, allocation) => {
+            switcher_bar.set_reveal(allocation.width < 500);
+            squeezer.set_child_enabled(title_wide_switcher, allocation.width > 800);
+            squeezer.set_child_enabled(title_narrow_switcher, allocation.width > 500);
+            squeezer.set_child_enabled(title_text, allocation.width <= 500);
+        });
+
         var header_bar_id = header_bar.notify["mode"].connect (() => {
             update_header_bar ();
         });