[nautilus] window-slot: workaround search bar double border

[Carlos Soriano Sánchez <csoriano src gnome org>]

commit a9af5c60ad4b55d0808b06e61ed26ddb15dcf09f
Author: Carlos Soriano <csoriano gnome org>
Date:   Thu Mar 3 18:05:40 2016 +0100

    window-slot: workaround search bar double border
    
    We currently have a double border in the view due to the search bar
    using a revealer, which always allocates 1 px and therefore shows the
    bottom border.
    
    Since to fix it we would need widgets able to allocate 0 px, which is
    current impossible, we workaround it with a CSS style that moves the
    content 1 px upward.

 src/nautilus-window-slot.c    |    3 +++
 src/resources/css/Adwaita.css |    5 +++++
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-window-slot.c b/src/nautilus-window-slot.c
index 16e2710..54a5e6c 100644
--- a/src/nautilus-window-slot.c
+++ b/src/nautilus-window-slot.c
@@ -631,6 +631,7 @@ nautilus_window_slot_constructed (GObject *object)
 {
        NautilusWindowSlot *slot = NAUTILUS_WINDOW_SLOT (object);
        GtkWidget *extras_vbox;
+        GtkStyleContext *style_context;
 
        G_OBJECT_CLASS (nautilus_window_slot_parent_class)->constructed (object);
 
@@ -639,6 +640,8 @@ nautilus_window_slot_constructed (GObject *object)
        gtk_widget_show (GTK_WIDGET (slot));
 
        extras_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+        style_context = gtk_widget_get_style_context (extras_vbox);
+        gtk_style_context_add_class (style_context, "searchbar-container");
        slot->details->extra_location_widgets = extras_vbox;
        gtk_box_pack_start (GTK_BOX (slot), extras_vbox, FALSE, FALSE, 0);
        gtk_widget_show (extras_vbox);
diff --git a/src/resources/css/Adwaita.css b/src/resources/css/Adwaita.css
index c2ba62d..8c79677 100644
--- a/src/resources/css/Adwaita.css
+++ b/src/resources/css/Adwaita.css
@@ -159,3 +159,8 @@
 .documents-entry-tag.button:hover {
     color: shade(@entry_tag_bg, 2.10);
 }
+
+/* Workaround for the double border of the searchbar since we use a revealer which
+ * always allocates at least 1 pixel */
+searchbar { border-top: 1px solid @borders; }
+.searchbar-container { margin-top: -1px; }