[iagno/arnaudb/wip/gtk4: 36/54] Fix About panel.

[Arnaud B. <arnaudb src gnome org>]

commit a96f0ab01bad58440a04e5334bc367cc85d0e762
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Wed Feb 19 20:29:23 2020 +0100

    Fix About panel.

 data/ui/overlayed-list.ui | 8 ++------
 src/overlayed-list.vala   | 4 ++--
 2 files changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/data/ui/overlayed-list.ui b/data/ui/overlayed-list.ui
index 24b8532..4fcecbf 100644
--- a/data/ui/overlayed-list.ui
+++ b/data/ui/overlayed-list.ui
@@ -48,10 +48,8 @@
           <class name="linked-circular"/>
         </style>
         <child>
-          <object class="GtkButton" id="leave_edit_mode_button">
+          <object class="GtkToggleButton" id="leave_edit_mode_button">
             <property name="hexpand">True</property>
-            <property name="centered">True</property>
-            <property name="iconic">True</property>
             <property name="focus-on-click">False</property>
             <style>
               <class name="left-on-ltr"/>
@@ -59,10 +57,8 @@
           </object>
         </child>
         <child>
-          <object class="GtkButton" id="enter_edit_mode_button">
+          <object class="GtkToggleButton" id="enter_edit_mode_button">
             <property name="hexpand">True</property>
-            <property name="centered">True</property>
-            <property name="iconic">True</property>
             <property name="focus-on-click">False</property>
             <style>
               <class name="right-on-ltr"/>
diff --git a/src/overlayed-list.vala b/src/overlayed-list.vala
index 9cc2a49..a2b386c 100644
--- a/src/overlayed-list.vala
+++ b/src/overlayed-list.vala
@@ -45,8 +45,8 @@ private abstract class OverlayedList : Overlay, AdaptativeWidget
     }
 
 
-    [GtkChild] private ModelButton enter_edit_mode_button;
-    [GtkChild] private ModelButton leave_edit_mode_button;
+    [GtkChild] private ToggleButton enter_edit_mode_button;
+    [GtkChild] private ToggleButton leave_edit_mode_button;
     [CCode (notify = false)] public string edit_mode_action_prefix
     {
         construct