[gnome-games/wip/exalm/libhandy: 4/8] preferences-window: Enable swipe gesture for leaflet

[Alexander Mikhaylenko <alexm src gnome org>]

commit 45ba20ba7e510eca3058d520bc37f7821d4d966e
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Feb 25 22:56:08 2020 +0500

    preferences-window: Enable swipe gesture for leaflet

 data/ui/preferences-window.ui  | 16 ++++++++++++++--
 src/ui/preferences-window.vala | 17 +++--------------
 2 files changed, 17 insertions(+), 16 deletions(-)
---
diff --git a/data/ui/preferences-window.ui b/data/ui/preferences-window.ui
index 5722830b..6bfefa1f 100644
--- a/data/ui/preferences-window.ui
+++ b/data/ui/preferences-window.ui
@@ -17,7 +17,7 @@
             <child>
               <object class="HdyLeaflet" id="titlebar_box">
                 <property name="visible">True</property>
-                <property name="transition-type">slide</property>
+                <signal name="notify::visible-child" handler="update_header_group"/>
                 <child>
                   <object class="GtkHeaderBar" id="left_header_bar">
                     <property name="name">left_header_bar</property>
@@ -58,6 +58,9 @@
                       <class name="sidebar"/>
                     </style>
                   </object>
+                  <packing>
+                    <property name="allow-visible">False</property>
+                  </packing>
                 </child>
                 <child>
                   <object class="GtkHeaderBar" id="right_header_bar">
@@ -106,7 +109,7 @@
         <child>
           <object class="HdyLeaflet" id="content_box">
             <property name="visible">True</property>
-            <property name="transition-type">slide</property>
+            <property name="can-swipe-back">True</property>
             <signal name="notify::folded" handler="on_folded_changed" after="yes"/>
             <child>
               <object class="GamesPreferencesSidebar" id="sidebar">
@@ -125,6 +128,9 @@
                   <class name="sidebar"/>
                 </style>
               </object>
+              <packing>
+                <property name="allow-visible">False</property>
+              </packing>
             </child>
             <child>
               <object class="GtkStack" id="stack">
@@ -180,4 +186,10 @@
       <headerbar name="right_header_bar"/>
     </headerbars>
   </object>
+  <object class="HdySwipeGroup">
+    <swipeables>
+      <swipeable name="titlebar_box"/>
+      <swipeable name="content_box"/>
+    </swipeables>
+  </object>
 </interface>
diff --git a/src/ui/preferences-window.vala b/src/ui/preferences-window.vala
index c9083d37..ccda289d 100644
--- a/src/ui/preferences-window.vala
+++ b/src/ui/preferences-window.vala
@@ -9,8 +9,6 @@ private class Games.PreferencesWindow : Gtk.Window {
        [GtkChild]
        private Hdy.Leaflet titlebar_box;
        [GtkChild]
-       private Gtk.HeaderBar left_header_bar;
-       [GtkChild]
        private Gtk.HeaderBar right_header_bar;
        [GtkChild]
        private Gtk.Stack main_stack;
@@ -54,8 +52,7 @@ private class Games.PreferencesWindow : Gtk.Window {
                                titlebar_stack.add (header_bar);
                                titlebar_stack.visible_child = header_bar;
 
-                               content_box.visible_child = stack;
-                               titlebar_box.visible_child = right_header_bar;
+                               content_box.navigate (Hdy.NavigationDirection.FORWARD);
                        }
 
                        _subpage = value;
@@ -74,9 +71,7 @@ private class Games.PreferencesWindow : Gtk.Window {
 
        [GtkCallback]
        private void sidebar_row_selected () {
-               content_box.visible_child = stack;
-               titlebar_box.visible_child = right_header_bar;
-               update_header_group ();
+               content_box.navigate (Hdy.NavigationDirection.FORWARD);
 
                update_ui ();
        }
@@ -108,14 +103,8 @@ private class Games.PreferencesWindow : Gtk.Window {
 
        [GtkCallback]
        private void on_back_clicked () {
-               if (content_box.visible_child == sidebar) {
+               if (!content_box.navigate (Hdy.NavigationDirection.BACK))
                        close ();
-                       return;
-               }
-
-               content_box.visible_child = sidebar;
-               titlebar_box.visible_child = left_header_bar;
-               update_header_group ();
        }
 
        [GtkCallback]