[gnome-terminal] search: Close the dialog on Escape key

[Egmont Koblinger <egmontkob src gnome org>]

commit dbe6749869be3fed9c3099613001d9e9ecd9d70d
Author: Egmont Koblinger <egmont gmail com>
Date:   Sun Dec 17 21:54:57 2017 +0100

    search: Close the dialog on Escape key
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771165

 src/terminal-search-popover.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/src/terminal-search-popover.c b/src/terminal-search-popover.c
index 4583a4f..81979b2 100644
--- a/src/terminal-search-popover.c
+++ b/src/terminal-search-popover.c
@@ -242,6 +242,18 @@ search_button_clicked_cb (GtkWidget *button,
   perform_search (popover, button == priv->search_prev_button);
 }
 
+static gboolean
+key_press_cb (GtkWidget *popover,
+              GdkEventKey *event,
+              gpointer user_data G_GNUC_UNUSED)
+{
+  if (event->keyval == GDK_KEY_Escape) {
+    gtk_widget_hide (popover);
+    return TRUE;
+  }
+  return FALSE;
+}
+
 static void
 update_regex (TerminalSearchPopover *popover)
 {
@@ -395,6 +407,8 @@ terminal_search_popover_init (TerminalSearchPopover *popover)
   g_signal_connect (priv->regex_checkbutton, "toggled", G_CALLBACK (search_parameters_changed_cb), popover);
 
   g_signal_connect (priv->wrap_around_checkbutton, "toggled", G_CALLBACK (wrap_around_toggled_cb), popover);
+
+  g_signal_connect (popover, "key-press-event", G_CALLBACK (key_press_cb), NULL);
 }
 
 static void