[gnome-games/wip/exalm/platform-preferences: 26/28] ui: Add PreferencesPageRetroPlatform

[Alexander Mikhaylenko <alexm src gnome org>]

commit fa103c6a4c63110f4f6fb396d792a7a033a34608
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Tue Sep 25 23:08:16 2018 +0500

    ui: Add PreferencesPageRetroPlatform

 data/org.gnome.Games.gresource.xml          |  1 +
 data/ui/preferences-page-retro-platform.ui  | 20 +++++++++
 po/POTFILES.in                              |  1 +
 src/meson.build                             |  1 +
 src/ui/preferences-page-retro-platform.vala | 64 +++++++++++++++++++++++++++++
 5 files changed, 87 insertions(+)
---
diff --git a/data/org.gnome.Games.gresource.xml b/data/org.gnome.Games.gresource.xml
index 33405834..cb1865b2 100644
--- a/data/org.gnome.Games.gresource.xml
+++ b/data/org.gnome.Games.gresource.xml
@@ -38,6 +38,7 @@
     <file preprocess="xml-stripblanks">ui/preferences-page-dummy-platform.ui</file>
     <file preprocess="xml-stripblanks">ui/preferences-page-plugins.ui</file>
     <file preprocess="xml-stripblanks">ui/preferences-page-plugins-item.ui</file>
+    <file preprocess="xml-stripblanks">ui/preferences-page-retro-platform.ui</file>
     <file preprocess="xml-stripblanks">ui/preferences-page-video.ui</file>
     <file preprocess="xml-stripblanks">ui/preferences-sidebar.ui</file>
     <file preprocess="xml-stripblanks">ui/preferences-sidebar-item.ui</file>
diff --git a/data/ui/preferences-page-retro-platform.ui b/data/ui/preferences-page-retro-platform.ui
new file mode 100644
index 00000000..b943261d
--- /dev/null
+++ b/data/ui/preferences-page-retro-platform.ui
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <!-- interface-requires gtk+ 3.16 -->
+  <template class="GamesPreferencesPageRetroPlatform" parent="GamesPreferencesPage">
+    <property name="visible">True</property>
+    <child>
+      <object class="GtkFrame">
+        <property name="visible">true</property>
+        <property name="shadow-type">in</property>
+        <child>
+          <object class="GtkListBox" id="core_list_box">
+            <property name="selection-mode">none</property>
+            <property name="visible">true</property>
+            <signal name="row-activated" handler="core_list_box_row_activated"/>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 5c605716..a56284e2 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -15,6 +15,7 @@ data/ui/media-menu-button.ui
 data/ui/preferences-page-controllers.ui
 data/ui/preferences-page-dummy-platform.ui
 data/ui/preferences-page-plugins.ui
+data/ui/preferences-page-retro-platform.ui
 data/ui/preferences-page-video.ui
 data/ui/preferences-subpage-gamepad.ui
 data/ui/preferences-subpage-keyboard.ui
diff --git a/src/meson.build b/src/meson.build
index 9f4d114e..3333a33a 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -166,6 +166,7 @@ vala_sources = [
   'ui/preferences-page-dummy-platform.vala',
   'ui/preferences-page-plugins.vala',
   'ui/preferences-page-plugins-item.vala',
+  'ui/preferences-page-retro-platform.vala',
   'ui/preferences-page-video.vala',
   'ui/preferences-sidebar.vala',
   'ui/preferences-sidebar-item.vala',
diff --git a/src/ui/preferences-page-retro-platform.vala b/src/ui/preferences-page-retro-platform.vala
new file mode 100644
index 00000000..b547ac68
--- /dev/null
+++ b/src/ui/preferences-page-retro-platform.vala
@@ -0,0 +1,64 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+[GtkTemplate (ui = "/org/gnome/Games/ui/preferences-page-retro-platform.ui")]
+private class Games.PreferencesPageRetroPlatform: PreferencesPage {
+       public RetroPlatform platform { get; construct set; }
+
+       [GtkChild]
+       private Gtk.ListBox core_list_box;
+
+       private Settings settings;
+
+       private string _current_core;
+       public string current_core {
+               get { return _current_core; }
+               set {
+                       _current_core = value;
+
+                       update_core_list ();
+               }
+       }
+
+       public PreferencesPageRetroPlatform (RetroPlatform platform) {
+               this.platform = platform;
+               title = platform.get_name ();
+               category = PreferencesPageCategory.PLATFORMS;
+
+               build_core_list ();
+
+               var path = "/org/gnome/Games/platforms/%s/".printf (platform.get_id ());
+               settings = new Settings.with_path ("org.gnome.Games.platforms", path);
+
+               settings.bind ("preferred-core", this, "current-core",
+                              SettingsBindFlags.DEFAULT);
+       }
+
+       private void build_core_list () {
+               var core_manager = RetroCoreManager.get_instance ();
+               var core_descriptors = core_manager.get_cores_for_platform (platform);
+
+               foreach (var core_descriptor in core_descriptors) {
+                       var item = new CoreItem (core_descriptor);
+                       core_list_box.add (item);
+               }
+       }
+
+       private void update_core_list () {
+               core_list_box.foreach ((item) => {
+                       var core_item = item as CoreItem;
+                       var core_descriptor = core_item.core_descriptor;
+                       var core_id = core_descriptor.get_id ();
+
+                       core_item.checkmark_visible = (core_id == current_core);
+               });
+       }
+
+       [GtkCallback]
+       private void core_list_box_row_activated (Gtk.ListBoxRow row_item) {
+               var core_item = row_item as CoreItem;
+
+               var core_descriptor = core_item.core_descriptor;
+
+               current_core = core_descriptor.get_id ();
+       }
+}