[gnome-boxes] notification: Port Boxes.Notification to GtkRevealer

[Felipe Borges <felipeborges src gnome org>]

commit 2c85bc0c6a4eeac7d0622f52a2b4294515cfaccf
Author: Felipe Borges <felipeborges gnome org>
Date:   Thu Jan 19 16:01:48 2017 +0100

    notification: Port Boxes.Notification to GtkRevealer
    
    GtkRevealer combined with the "app-notification" class is enough
    to represent the notification concept nowadays. This is part of
    the effort to drop the dependency on libgd.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777497

 data/ui/notification.ui |   22 +++++++++++++++++++++-
 src/notification.vala   |   25 ++++++++++++++++++++++++-
 2 files changed, 45 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/notification.ui b/data/ui/notification.ui
index d4fe50a..f7ce0da 100644
--- a/data/ui/notification.ui
+++ b/data/ui/notification.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <!-- interface-requires gtk+ 3.9 -->
-  <template class="BoxesNotification" parent="GdNotification">
+  <template class="BoxesNotification" parent="GtkRevealer">
     <property name="visible">True</property>
     <property name="valign">start</property>
 
@@ -13,6 +13,10 @@
         <property name="margin-end">12</property>
         <property name="column-spacing">12</property>
         <property name="valign">center</property>
+        <property name="halign">center</property>
+        <style>
+          <class name="app-notification"/>
+        </style>
 
         <child>
           <object class="GtkLabel" id="message_label">
@@ -32,6 +36,22 @@
           </object>
         </child>
 
+        <child>
+          <object class="GtkButton" id="close_button">
+            <property name="visible">True</property>
+            <style>
+              <class name="flat"/>
+            </style>
+
+            <child>
+              <object class="GtkImage">
+                <property name="visible">True</property>
+                <property name="icon-name">window-close</property>
+              </object>
+            </child>
+          </object>
+        </child>
+
       </object>
     </child>
   </template>
diff --git a/src/notification.vala b/src/notification.vala
index 015b34b..f02bf24 100644
--- a/src/notification.vala
+++ b/src/notification.vala
@@ -2,8 +2,11 @@
 using Gtk;
 
 [GtkTemplate (ui = "/org/gnome/Boxes/ui/notification.ui")]
-private class Boxes.Notification: Gd.Notification {
+private class Boxes.Notification: Gtk.Revealer {
+    public signal void dismissed ();
+
     public const int DEFAULT_TIMEOUT = 6;
+    private int timeout = DEFAULT_TIMEOUT;
 
     public delegate void OKFunc ();
     public delegate void DismissFunc ();
@@ -14,6 +17,8 @@ private class Boxes.Notification: Gd.Notification {
     private Gtk.Label ok_button_label;
     [GtkChild]
     private Gtk.Button ok_button;
+    [GtkChild]
+    private Gtk.Button close_button;
 
     public Notification (string             message,
                          MessageType        message_type,
@@ -21,7 +26,18 @@ private class Boxes.Notification: Gd.Notification {
                          owned OKFunc?      ok_func,
                          owned DismissFunc? dismiss_func,
                          int                timeout) {
+        /*
+         * Templates cannot set construct properties, so
+         * lets use the respective property setter method.
+         */
+        set_reveal_child (true);
+
         this.timeout = timeout;
+        Timeout.add_seconds (this.timeout, () => {
+            dismiss ();
+
+            return true;
+        });
 
         bool ok_pressed = false;
         dismissed.connect ( () => {
@@ -43,5 +59,12 @@ private class Boxes.Notification: Gd.Notification {
 
             ok_button.show_all ();
         }
+
+        close_button.clicked.connect (dismiss);
+    }
+
+    public void dismiss () {
+        set_reveal_child (false);
+        dismissed ();
     }
 }