[gnome-games/wip/exalm/spinner-performance] ui: Add loading state

[Alexander Mikhaylenko <alexm src gnome org>]

commit b2a341ff590177ae07d170f6804cf3846a955998
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Wed Sep 5 19:36:10 2018 +0500

    ui: Add loading state
    
    Add UiState.LOADING state represented by LoadingBox and LoadingHeaderBar
    widgets.
    
    This will be used in subsequent commits to show loading collection.

 data/org.gnome.Games.gresource.xml |  2 ++
 data/ui/application-window.ui      | 17 +++++++++++++++++
 data/ui/loading-box.ui             | 13 +++++++++++++
 data/ui/loading-header-bar.ui      |  7 +++++++
 src/meson.build                    |  2 ++
 src/ui/application-window.vala     | 28 ++++++++++++++++++++--------
 src/ui/loading-box.vala            |  5 +++++
 src/ui/loading-header-bar.vala     |  5 +++++
 src/ui/ui-state.vala               |  1 +
 9 files changed, 72 insertions(+), 8 deletions(-)
---
diff --git a/data/org.gnome.Games.gresource.xml b/data/org.gnome.Games.gresource.xml
index b9f080cb..8e07460c 100644
--- a/data/org.gnome.Games.gresource.xml
+++ b/data/org.gnome.Games.gresource.xml
@@ -27,6 +27,8 @@
     <file preprocess="xml-stripblanks">ui/game-icon-view.ui</file>
     <file preprocess="xml-stripblanks">ui/keyboard-mapper.ui</file>
     <file preprocess="xml-stripblanks">ui/keyboard-tester.ui</file>
+    <file preprocess="xml-stripblanks">ui/loading-box.ui</file>
+    <file preprocess="xml-stripblanks">ui/loading-header-bar.ui</file>
     <file preprocess="xml-stripblanks">ui/media-menu-button.ui</file>
     <file preprocess="xml-stripblanks">ui/media-selector.ui</file>
     <file preprocess="xml-stripblanks">ui/platform-list-item.ui</file>
diff --git a/data/ui/application-window.ui b/data/ui/application-window.ui
index 9efae3e7..61b45eef 100644
--- a/data/ui/application-window.ui
+++ b/data/ui/application-window.ui
@@ -14,6 +14,14 @@
     <child>
       <object class="GtkStack" id="content_box">
         <property name="visible">True</property>
+        <child>
+          <object class="GamesLoadingBox" id="loading_box">
+            <property name="visible">True</property>
+          </object>
+          <packing>
+            <property name="name">loading</property>
+          </packing>
+        </child>
         <child>
           <object class="GamesCollectionBox" id="collection_box">
             <property name="visible">True</property>
@@ -37,6 +45,15 @@
     <child type="titlebar">
       <object class="GtkStack" id="header_bar">
         <property name="visible">True</property>
+        <child>
+          <object class="GamesLoadingHeaderBar" id="loading_header_bar">
+            <property name="visible">True</property>
+            <property name="show_close_button">True</property>
+          </object>
+          <packing>
+            <property name="name">loading</property>
+          </packing>
+        </child>
         <child>
           <object class="GamesCollectionHeaderBar" id="collection_header_bar">
             <property name="visible">True</property>
diff --git a/data/ui/loading-box.ui b/data/ui/loading-box.ui
new file mode 100644
index 00000000..ec2190f6
--- /dev/null
+++ b/data/ui/loading-box.ui
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk+" version="3.16"/>
+  <template class="GamesLoadingBox" parent="GtkBin">
+    <property name="visible">True</property>
+    <child>
+      <object class="GtkSpinner">
+        <property name="visible">True</property>
+        <property name="active">True</property>
+      </object>
+    </child>
+  </template>
+</interface>
diff --git a/data/ui/loading-header-bar.ui b/data/ui/loading-header-bar.ui
new file mode 100644
index 00000000..c489c09a
--- /dev/null
+++ b/data/ui/loading-header-bar.ui
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk+" version="3.16"/>
+  <template class="GamesLoadingHeaderBar" parent="GtkHeaderBar">
+    <property name="visible">True</property>
+  </template>
+</interface>
diff --git a/src/meson.build b/src/meson.build
index 36c077a3..cb473cca 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -147,6 +147,8 @@ vala_sources = [
   'ui/gamepad-view-configuration.vala',
   'ui/keyboard-mapper.vala',
   'ui/keyboard-tester.vala',
+  'ui/loading-box.vala',
+  'ui/loading-header-bar.vala',
   'ui/konami-code.vala',
   'ui/media-selector.vala',
   'ui/media-menu-button.vala',
diff --git a/src/ui/application-window.vala b/src/ui/application-window.vala
index 7082d393..c3e89698 100644
--- a/src/ui/application-window.vala
+++ b/src/ui/application-window.vala
@@ -17,25 +17,33 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
                        _ui_state = value;
 
                        switch (ui_state) {
+                       case UiState.LOADING:
+                               content_box.visible_child = loading_box;
+                               header_bar.visible_child = loading_header_bar;
+
+                               break;
                        case UiState.COLLECTION:
                                content_box.visible_child = collection_box;
                                header_bar.visible_child = collection_header_bar;
 
-                               is_fullscreen = false;
-
-                               if (display_box.runner != null) {
-                                       display_box.runner.stop ();
-                                       display_box.runner = null;
-                               }
-
                                break;
                        case UiState.DISPLAY:
                                content_box.visible_child = display_box;
                                header_bar.visible_child = display_header_bar;
 
+                               break;
+                       }
+
+                       if (ui_state != UiState.COLLECTION)
                                search_mode = false;
 
-                               break;
+                       if (ui_state != UiState.DISPLAY) {
+                               is_fullscreen = false;
+
+                               if (display_box.runner != null) {
+                                       display_box.runner.stop ();
+                                       display_box.runner = null;
+                               }
                        }
 
                        konami_code.reset ();
@@ -68,6 +76,8 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
        [GtkChild]
        private Gtk.Stack content_box;
        [GtkChild]
+       private LoadingBox loading_box;
+       [GtkChild]
        private CollectionBox collection_box;
        [GtkChild]
        private DisplayBox display_box;
@@ -75,6 +85,8 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
        [GtkChild]
        private Gtk.Stack header_bar;
        [GtkChild]
+       private LoadingHeaderBar loading_header_bar;
+       [GtkChild]
        private CollectionHeaderBar collection_header_bar;
        [GtkChild]
        private DisplayHeaderBar display_header_bar;
diff --git a/src/ui/loading-box.vala b/src/ui/loading-box.vala
new file mode 100644
index 00000000..d74a4301
--- /dev/null
+++ b/src/ui/loading-box.vala
@@ -0,0 +1,5 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+[GtkTemplate (ui = "/org/gnome/Games/ui/loading-box.ui")]
+private class Games.LoadingBox : Gtk.Bin {
+}
diff --git a/src/ui/loading-header-bar.vala b/src/ui/loading-header-bar.vala
new file mode 100644
index 00000000..aecc72e8
--- /dev/null
+++ b/src/ui/loading-header-bar.vala
@@ -0,0 +1,5 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+[GtkTemplate (ui = "/org/gnome/Games/ui/loading-header-bar.ui")]
+private class Games.LoadingHeaderBar : Gtk.HeaderBar {
+}
diff --git a/src/ui/ui-state.vala b/src/ui/ui-state.vala
index 68324f60..e504b6fd 100644
--- a/src/ui/ui-state.vala
+++ b/src/ui/ui-state.vala
@@ -1,6 +1,7 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 private enum Games.UiState {
+       LOADING,
        COLLECTION,
        DISPLAY,
 }