[nautilus/search-events-on-view] window-slot: Focus view widget on search up or down arrow pressed

[Carlos Soriano <csoriano src gnome org>]

commit 88c31ba43b1a07a715305ecef2bd7ff3392ea1b9
Author: Carlos Soriano <csoriano redhat com>
Date:   Tue Oct 2 14:38:38 2018 +0200

    window-slot: Focus view widget on search up or down arrow pressed
    
    This is a regression from 3.28, where the file items where being
    selected while searching if the user clicked either up or the down
    arrows.
    
    Since 3.30 we moved the query editor to the header bar, this automatic
    handling was lost.
    
    To fix it, do something similar as we do when activating the search,
    which is emitting a signal to inform the window slot and the views to
    perform an explicit action. In this case, we focus the views so further
    key events are handled by the views themselves and not by the query.
    
    Closes: https://gitlab.gnome.org/GNOME/nautilus/issues/610

 src/nautilus-query-editor.c | 32 ++++++++++++++++++++++++++++++++
 src/nautilus-window-slot.c  | 25 +++++++++++++++++++++++++
 src/nautilus-window.c       |  5 +++--
 3 files changed, 60 insertions(+), 2 deletions(-)
---
diff --git a/src/nautilus-query-editor.c b/src/nautilus-query-editor.c
index b95dbe5c8..a1dc0a63e 100644
--- a/src/nautilus-query-editor.c
+++ b/src/nautilus-query-editor.c
@@ -58,6 +58,7 @@ struct _NautilusQueryEditor
 enum
 {
     ACTIVATED,
+    FOCUS_VIEW,
     CHANGED,
     CANCEL,
     LAST_SIGNAL
@@ -271,6 +272,15 @@ nautilus_query_editor_class_init (NautilusQueryEditorClass *class)
                       g_cclosure_marshal_VOID__VOID,
                       G_TYPE_NONE, 0);
 
+    signals[FOCUS_VIEW] =
+        g_signal_new ("focus-view",
+                      G_TYPE_FROM_CLASS (class),
+                      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+                      0,
+                      NULL, NULL,
+                      g_cclosure_marshal_VOID__VOID,
+                      G_TYPE_NONE, 0);
+
     /**
      * NautilusQueryEditor::location:
      *
@@ -727,8 +737,30 @@ gboolean
 nautilus_query_editor_handle_event (NautilusQueryEditor *self,
                                     GdkEvent            *event)
 {
+    guint keyval;
+    GdkModifierType state;
+
     g_return_val_if_fail (NAUTILUS_IS_QUERY_EDITOR (self), GDK_EVENT_PROPAGATE);
     g_return_val_if_fail (event != NULL, GDK_EVENT_PROPAGATE);
 
+    if (G_UNLIKELY (!gdk_event_get_keyval (event, &keyval)))
+    {
+        g_return_val_if_reached (GDK_EVENT_PROPAGATE);
+    }
+
+    gdk_event_get_state (event, &state);
+
+    /* In the case of key up/down we want to move the focus to the view, since
+     * the user is probably trying to navigate the files
+     */
+    if (gtk_widget_has_focus (GTK_WIDGET (self->entry)))
+    {
+        if (keyval == GDK_KEY_Down || keyval == GDK_KEY_Up)
+        {
+            g_signal_emit (self, signals[FOCUS_VIEW], 0);
+            return GDK_EVENT_STOP;
+        }
+    }
+
     return gtk_search_entry_handle_event (GTK_SEARCH_ENTRY (self->entry), event);
 }
diff --git a/src/nautilus-window-slot.c b/src/nautilus-window-slot.c
index b3a7bc211..169f1fb6e 100644
--- a/src/nautilus-window-slot.c
+++ b/src/nautilus-window-slot.c
@@ -102,6 +102,7 @@ typedef struct
     gulong qe_changed_id;
     gulong qe_cancel_id;
     gulong qe_activated_id;
+    gulong qe_focus_view_id;
 
     GtkLabel *search_info_label;
     GtkRevealer *search_info_label_revealer;
@@ -438,6 +439,19 @@ query_editor_activated_callback (NautilusQueryEditor *editor,
     }
 }
 
+static void
+query_editor_focus_view_callback (NautilusQueryEditor *editor,
+                                   NautilusWindowSlot  *self)
+{
+    NautilusWindowSlotPrivate *priv;
+
+    priv = nautilus_window_slot_get_instance_private (self);
+    if (priv->content_view != NULL)
+    {
+        gtk_widget_grab_focus (priv->content_view);
+    }
+}
+
 static void
 query_editor_changed_callback (NautilusQueryEditor *editor,
                                NautilusQuery       *query,
@@ -476,6 +490,11 @@ hide_query_editor (NautilusWindowSlot *self)
         g_signal_handler_disconnect (priv->query_editor, priv->qe_activated_id);
         priv->qe_activated_id = 0;
     }
+    if (priv->qe_focus_view_id > 0)
+    {
+        g_signal_handler_disconnect (priv->query_editor, priv->qe_focus_view_id);
+        priv->qe_focus_view_id = 0;
+    }
 
     nautilus_query_editor_set_query (priv->query_editor, NULL);
 
@@ -562,6 +581,12 @@ show_query_editor (NautilusWindowSlot *self)
             g_signal_connect (priv->query_editor, "activated",
                               G_CALLBACK (query_editor_activated_callback), self);
     }
+    if (priv->qe_focus_view_id == 0)
+    {
+        priv->qe_focus_view_id =
+            g_signal_connect (priv->query_editor, "focus-view",
+                              G_CALLBACK (query_editor_focus_view_callback), self);
+    }
 }
 
 static void
diff --git a/src/nautilus-window.c b/src/nautilus-window.c
index 0d1234f15..9b3380de6 100644
--- a/src/nautilus-window.c
+++ b/src/nautilus-window.c
@@ -2494,12 +2494,13 @@ nautilus_window_key_press_event (GtkWidget   *widget,
         }
     }
 
-    if (GTK_WIDGET_CLASS (nautilus_window_parent_class)->key_press_event (widget, event))
+    if (nautilus_window_slot_handle_event (window->active_slot, (GdkEvent *) event))
     {
         return GDK_EVENT_STOP;
     }
 
-    if (nautilus_window_slot_handle_event (window->active_slot, (GdkEvent *) event))
+
+    if (GTK_WIDGET_CLASS (nautilus_window_parent_class)->key_press_event (widget, event))
     {
         return GDK_EVENT_STOP;
     }