[gnome-news/wip/gbsneto/improvements] window: load widgets from resource

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 0f842cca12b184f79dc10856ff0143d24a221ff6
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Mar 5 14:12:57 2016 -0300

    window: load widgets from resource
    
    Time already proved us that crafting UI in
    source code is a very bad idea. This commit
    adds a new window.ui resource, and loads the
    window widgets from this resource.

 data/gnome-news.gresource.xml |    1 +
 data/ui/window.ui             |  149 +++++++++++++++++++++++++++++++++++++++++
 gnomenews/window.py           |   35 ++++++----
 3 files changed, 171 insertions(+), 14 deletions(-)
---
diff --git a/data/gnome-news.gresource.xml b/data/gnome-news.gresource.xml
index 277e4c7..5856cf6 100644
--- a/data/gnome-news.gresource.xml
+++ b/data/gnome-news.gresource.xml
@@ -6,6 +6,7 @@
     <file compressed="true" alias="AUTHORS">../AUTHORS</file>
     <file compressed="true" preprocess="xml-stripblanks">gtk/menus.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">ui/headerbar.ui</file>
+    <file compressed="true" preprocess="xml-stripblanks">ui/window.ui</file>
     <file compressed="true">theme/Adwaita.css</file>
     <file compressed="true">theme/reader.css</file>
   </gresource>
diff --git a/data/ui/window.ui b/data/ui/window.ui
new file mode 100644
index 0000000..6630c18
--- /dev/null
+++ b/data/ui/window.ui
@@ -0,0 +1,149 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.19.0 -->
+<interface>
+  <requires lib="gtk+" version="3.16"/>
+  <object class="GtkBox" id="box">
+    <property name="visible">True</property>
+    <property name="can_focus">False</property>
+    <property name="orientation">vertical</property>
+    <child>
+      <object class="GtkSearchBar" id="search_bar">
+        <property name="visible">True</property>
+        <property name="app_paintable">True</property>
+        <property name="can_focus">False</property>
+        <property name="show_close_button">True</property>
+        <child>
+          <object class="GtkSearchEntry" id="search_entry">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="width_chars">40</property>
+            <property name="primary_icon_name">edit-find-symbolic</property>
+            <property name="primary_icon_activatable">False</property>
+            <property name="primary_icon_sensitive">False</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">0</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkOverlay" id="overlay">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <property name="hexpand">True</property>
+        <property name="vexpand">True</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>
+            <style>
+              <class name="background"/>
+            </style>
+          </object>
+          <packing>
+            <property name="index">-1</property>
+          </packing>
+        </child>
+        <child type="overlay">
+          <object class="GtkRevealer" id="notification">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="halign">center</property>
+            <property name="valign">start</property>
+            <property name="transition_type">none</property>
+            <child>
+              <object class="GtkFrame">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label_xalign">0</property>
+                <property name="shadow_type">none</property>
+                <child>
+                  <object class="GtkBox">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="spacing">12</property>
+                    <child>
+                      <object class="GtkLabel" id="notification_label">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                      </object>
+                      <packing>
+                        <property name="expand">False</property>
+                        <property name="fill">True</property>
+                        <property name="position">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="secondary_action_button">
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                      </object>
+                      <packing>
+                        <property name="expand">False</property>
+                        <property name="fill">True</property>
+                        <property name="position">1</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkButton" id="close_notification_button">
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">True</property>
+                        <property name="relief">none</property>
+                        <child>
+                          <object class="GtkImage">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="icon_name">window-close-symbolic</property>
+                          </object>
+                        </child>
+                        <style>
+                          <class name="image-button"/>
+                        </style>
+                      </object>
+                      <packing>
+                        <property name="expand">False</property>
+                        <property name="fill">True</property>
+                        <property name="position">2</property>
+                      </packing>
+                    </child>
+                  </object>
+                </child>
+                <child type="label_item">
+                  <placeholder/>
+                </child>
+                <style>
+                  <class name="osd"/>
+                </style>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">1</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkActionBar" id="action_bar">
+        <property name="can_focus">False</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">2</property>
+      </packing>
+    </child>
+  </object>
+</interface>
diff --git a/gnomenews/window.py b/gnomenews/window.py
index 9e2d026..bbc4f4d 100644
--- a/gnomenews/window.py
+++ b/gnomenews/window.py
@@ -40,8 +40,11 @@ class Window(Gtk.ApplicationWindow):
         self.tracker = Tracker()
 
         self.restore_saved_size()
-        # Start drawing UI
-        self._setup_view()
+
+        # Setup UI widgets
+        self._setup_widgets()
+
+        self.show()
 
     @log
     def restore_saved_size(self):
@@ -79,24 +82,28 @@ class Window(Gtk.ApplicationWindow):
         self.settings.set_value('window-position', GLib.Variant('ai', [position[0], position[1]]))
 
     @log
-    def _setup_view(self):
-        self._box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
+    def _setup_widgets(self):
+        self._ui = Gtk.Builder()
+        self._ui.add_from_resource('/org/gnome/News/ui/window.ui')
+
+        self._box = self._ui.get_object('box')
+        self.add(self._box)
+
+        # Views
         self.views = []
-        self.toolbar = Toolbar(self)
-        self._stack = Gtk.Stack(
-            transition_type=Gtk.StackTransitionType.CROSSFADE,
-            transition_duration=100,
-            visible=True,
-            can_focus=False)
+        self._stack = self._ui.get_object('stack')
+        self._overlay = self._ui.get_object('overlay')
         self._stack.connect("notify::visible-child", self.view_changed)
-        self._overlay = Gtk.Overlay(child=self._stack)
+
+        # Action bar
+        self.action_bar = self._ui.get_object('action_bar')
+
+        # Header bar
+        self.toolbar = Toolbar(self)
         self.set_titlebar(self.toolbar.header_bar)
-        self._box.pack_start(self._overlay, True, True, 0)
-        self.add(self._box)
 
         self._add_views()
 
-        self.show_all()
         self.toolbar._back_button.set_visible(False)
 
     @log