[gnome-usage] Fix search button activation

[Petr Štětka <pstetka src gnome org>]

commit 4ab396a5c574d0e3ae4710407e165006d41019d4
Author: Petr Štětka <pstetka redhat com>
Date:   Thu Mar 9 15:15:54 2017 +0100

    Fix search button activation

 src/header-bar.vala |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/header-bar.vala b/src/header-bar.vala
index 9563d82..f1b6e71 100644
--- a/src/header-bar.vala
+++ b/src/header-bar.vala
@@ -12,6 +12,7 @@ namespace Usage
        {
            private Gtk.StackSwitcher stack_switcher;
            private Gtk.ToggleButton? performance_search_button;
+           private bool active_performance_search_btn = false;
            private Gtk.Button? storage_back_button;
            private Gtk.Button? storage_rescan_button;
            private bool show_storage_back_btn = false;
@@ -57,7 +58,9 @@ namespace Usage
                     show_stack_switcher();
                     performance_search_button = new Gtk.ToggleButton();
                     performance_search_button.set_image(new 
Gtk.Image.from_icon_name("system-search-symbolic", Gtk.IconSize.BUTTON));
+                    performance_search_button.set_active(active_performance_search_btn);
                     performance_search_button.toggled.connect(() => {
+                        active_performance_search_btn = performance_search_button.active;
                         ((PerformanceView) (GLib.Application.get_default() as 
Application).get_window().get_views()[0]).set_search_mode(performance_search_button.active);
                     });
                     performance_search_button.show();