[gnome-flashback/gnome-3-18] input-sources: add selected pseudo class to GfCandidateBox

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 7dc1ebe74042b631536e483aa1d906090f2236bc
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Jan 18 12:58:35 2016 +0200

    input-sources: add selected pseudo class to GfCandidateBox

 .../libinput-sources/gf-candidate-area.c           |    3 ++
 .../libinput-sources/gf-candidate-box.c            |   31 ++++++++++++++++++-
 .../libinput-sources/gf-candidate-box.h            |   13 +++++---
 3 files changed, 40 insertions(+), 7 deletions(-)
---
diff --git a/gnome-flashback/libinput-sources/gf-candidate-area.c 
b/gnome-flashback/libinput-sources/gf-candidate-area.c
index 8ca69af..87a18be 100644
--- a/gnome-flashback/libinput-sources/gf-candidate-area.c
+++ b/gnome-flashback/libinput-sources/gf-candidate-area.c
@@ -263,6 +263,9 @@ gf_candidate_area_set_candidates (GfCandidateArea *area,
 
       gf_candidate_box_set_labels (GF_CANDIDATE_BOX (candidate_box),
                                    index_text, candidate_text);
+
+      gf_candidate_box_set_selected (GF_CANDIDATE_BOX (candidate_box),
+                                     cursor_visible && i == cursor_position);
     }
 }
 
diff --git a/gnome-flashback/libinput-sources/gf-candidate-box.c 
b/gnome-flashback/libinput-sources/gf-candidate-box.c
index d845588..bc22e90 100644
--- a/gnome-flashback/libinput-sources/gf-candidate-box.c
+++ b/gnome-flashback/libinput-sources/gf-candidate-box.c
@@ -23,10 +23,12 @@ struct _GfCandidateBox
 {
   GtkEventBox  parent;
 
+  guint        index;
+
   GtkWidget   *index_label;
   GtkWidget   *candidate_label;
 
-  guint        index;
+  gboolean     selected;
 };
 
 enum
@@ -77,7 +79,16 @@ static gboolean
 gf_candidate_box_leave_notify_event (GtkWidget        *widget,
                                      GdkEventCrossing *event)
 {
-  gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_NORMAL, TRUE);
+  GfCandidateBox *box;
+  GtkStateFlags flags;
+
+  box = GF_CANDIDATE_BOX (widget);
+  flags = GTK_STATE_FLAG_NORMAL;
+
+  if (box->selected)
+    flags |= GTK_STATE_FLAG_SELECTED;
+
+  gtk_widget_set_state_flags (widget, flags, TRUE);
 
   return GDK_EVENT_PROPAGATE;
 }
@@ -140,3 +151,19 @@ gf_candidate_box_get_index (GfCandidateBox *box)
 {
   return box->index;
 }
+
+void
+gf_candidate_box_set_selected (GfCandidateBox *box,
+                               gboolean        selected)
+{
+  GtkStateFlags flags;
+
+  if (box->selected == selected)
+    return;
+
+  box->selected = selected;
+
+  flags = selected ? GTK_STATE_FLAG_SELECTED : GTK_STATE_FLAG_NORMAL;
+
+  gtk_widget_set_state_flags (GTK_WIDGET (box), flags, TRUE);
+}
diff --git a/gnome-flashback/libinput-sources/gf-candidate-box.h 
b/gnome-flashback/libinput-sources/gf-candidate-box.h
index ae5febe..9c39e9d 100644
--- a/gnome-flashback/libinput-sources/gf-candidate-box.h
+++ b/gnome-flashback/libinput-sources/gf-candidate-box.h
@@ -26,13 +26,16 @@ G_BEGIN_DECLS
 G_DECLARE_FINAL_TYPE (GfCandidateBox, gf_candidate_box,
                       GF, CANDIDATE_BOX, GtkEventBox)
 
-GtkWidget *gf_candidate_box_new        (guint           index);
+GtkWidget *gf_candidate_box_new          (guint           index);
 
-void       gf_candidate_box_set_labels (GfCandidateBox *box,
-                                        const gchar    *index_label,
-                                        const gchar    *candidate_label);
+void       gf_candidate_box_set_labels   (GfCandidateBox *box,
+                                          const gchar    *index_label,
+                                          const gchar    *candidate_label);
 
-guint      gf_candidate_box_get_index  (GfCandidateBox *box);
+guint      gf_candidate_box_get_index    (GfCandidateBox *box);
+
+void       gf_candidate_box_set_selected (GfCandidateBox *box,
+                                          gboolean        selected);
 
 G_END_DECLS