project: simplify focus chain

Nautilus classes add custom methods to grab the focus
differently according to the class.

The problem with this approach, however, is that we end
up with more code coupling, since it's necessary to include
more headers to use the custom grab methods.

To fix that, make classes override GtkWidget::grab_focus
method and remove the custom methods, so widgets can simply
call gtk_widget_grab_focus.

7 files changed, 43 insertions, 27 deletions

diff --git a/src/nautilus-query-editor.c b/src/nautilus-query-editor.c
index 0e07bb29c..ccdb55bed 100644
--- a/src/nautilus-query-editor.c
+++ b/src/nautilus-query-editor.c
@@ -903,7 +903,7 @@ entry_key_press_event_cb (GtkWidget           *widget,
 			  NautilusQueryEditor *editor)
 {
 	if (event->keyval == GDK_KEY_Down) {
-		nautilus_window_grab_focus (NAUTILUS_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (widget))));
+		gtk_widget_grab_focus (gtk_widget_get_toplevel (GTK_WIDGET (widget)));
 	}
 	return FALSE;
 }
diff --git a/src/nautilus-toolbar.c b/src/nautilus-toolbar.c
index 5d67c833f..3e33d2840 100644
--- a/src/nautilus-toolbar.c
+++ b/src/nautilus-toolbar.c
@@ -426,13 +426,7 @@ static void
 view_menu_popover_closed (GtkPopover *popover,
 			  NautilusToolbar *self)
 {
-	NautilusWindowSlot *slot;
-	NautilusView *view;
-
-	slot = nautilus_window_get_active_slot (self->priv->window);
-	view = nautilus_window_slot_get_current_view (slot);
-
-	nautilus_view_grab_focus (view);
+        gtk_widget_grab_focus (GTK_WIDGET (self->priv->window));
 }
 
 static gboolean
diff --git a/src/nautilus-view.c b/src/nautilus-view.c
index 53dddc27b..d2dd51b5a 100644
--- a/src/nautilus-view.c
+++ b/src/nautilus-view.c
@@ -2697,12 +2697,18 @@ slot_inactive (NautilusWindowSlot *slot,
 	remove_update_context_menus_timeout_callback (view);
 }
 
-void
-nautilus_view_grab_focus (NautilusView *view)
+static void
+nautilus_view_grab_focus (GtkWidget *widget)
 {
 	/* focus the child of the scrolled window if it exists */
+        NautilusView *view;
 	GtkWidget *child;
+
+        view = NAUTILUS_VIEW (widget);
 	child = gtk_bin_get_child (GTK_BIN (view->details->scrolled_window));
+
+        GTK_WIDGET_CLASS (nautilus_view_parent_class)->grab_focus (widget);
+
 	if (child) {
 		gtk_widget_grab_focus (GTK_WIDGET (child));
 	}
@@ -7744,6 +7750,7 @@ nautilus_view_class_init (NautilusViewClass *klass)
 	widget_class->destroy = nautilus_view_destroy;
 	widget_class->scroll_event = nautilus_view_scroll_event;
 	widget_class->parent_set = nautilus_view_parent_set;
+        widget_class->grab_focus = nautilus_view_grab_focus;
 
 	g_type_class_add_private (klass, sizeof (NautilusViewDetails));
 
diff --git a/src/nautilus-view.h b/src/nautilus-view.h
index 95770f72e..5bd42d944 100644
--- a/src/nautilus-view.h
+++ b/src/nautilus-view.h
@@ -380,7 +380,6 @@ gboolean          nautilus_view_can_zoom_out               (NautilusView      *v
 void              nautilus_view_pop_up_pathbar_context_menu (NautilusView    *view,
 							     GdkEventButton  *event,
 							     const char      *location);
-void              nautilus_view_grab_focus                 (NautilusView      *view);
 void              nautilus_view_update_menus               (NautilusView      *view);
 
 void              nautilus_view_update_context_menus       (NautilusView      *view);
diff --git a/src/nautilus-window-slot.c b/src/nautilus-window-slot.c
index 7c1daf9e1..f87b14b99 100644
--- a/src/nautilus-window-slot.c
+++ b/src/nautilus-window-slot.c
@@ -385,7 +385,7 @@ nautilus_window_slot_set_search_visible (NautilusWindowSlot *slot,
 		}
 
 		if (active_slot) {
-			nautilus_window_grab_focus (slot->details->window);
+			gtk_widget_grab_focus (GTK_WIDGET (slot->details->window));
 		}
 
 		/* Now hide the editor and clear its state */
@@ -2376,9 +2376,28 @@ nautilus_window_slot_dispose (GObject *object)
 }
 
 static void
+nautilus_window_slot_grab_focus (GtkWidget *widget)
+{
+        NautilusWindowSlot *slot;
+
+        slot = NAUTILUS_WINDOW_SLOT (widget);
+
+        GTK_WIDGET_CLASS (nautilus_window_slot_parent_class)->grab_focus (widget);
+
+        if (slot->details->search_visible) {
+                gtk_widget_grab_focus (GTK_WIDGET (slot->details->query_editor));
+        } else if (slot->details->content_view) {
+                gtk_widget_grab_focus (GTK_WIDGET (slot->details->content_view));
+        } else if (slot->details->new_content_view) {
+                gtk_widget_grab_focus (GTK_WIDGET (slot->details->new_content_view));
+        }
+}
+
+static void
 nautilus_window_slot_class_init (NautilusWindowSlotClass *klass)
 {
 	GObjectClass *oclass = G_OBJECT_CLASS (klass);
+        GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 
 	klass->active = real_active;
 	klass->inactive = real_inactive;
@@ -2388,6 +2407,8 @@ nautilus_window_slot_class_init (NautilusWindowSlotClass *klass)
 	oclass->set_property = nautilus_window_slot_set_property;
 	oclass->get_property = nautilus_window_slot_get_property;
 
+        widget_class->grab_focus = nautilus_window_slot_grab_focus;
+
 	signals[ACTIVE] =
 		g_signal_new ("active",
 			      G_TYPE_FROM_CLASS (klass),
diff --git a/src/nautilus-window.c b/src/nautilus-window.c
index e3c3f25cf..1b8d9d04f 100644
--- a/src/nautilus-window.c
+++ b/src/nautilus-window.c
@@ -590,17 +590,17 @@ remember_focus_widget (NautilusWindow *window)
 	}
 }
 
-void
-nautilus_window_grab_focus (NautilusWindow *window)
+static void
+nautilus_window_grab_focus (GtkWidget *widget)
 {
 	NautilusWindowSlot *slot;
-	NautilusView *view;
 
-	slot = nautilus_window_get_active_slot (window);
-	view = nautilus_window_slot_get_view (slot);
+	slot = nautilus_window_get_active_slot (NAUTILUS_WINDOW (widget));
 
-	if (view) {
-		nautilus_view_grab_focus (view);
+        GTK_WIDGET_CLASS (nautilus_window_parent_class)->grab_focus (widget);
+
+	if (slot) {
+		gtk_widget_grab_focus (GTK_WIDGET (slot));
 	}
 }
 
@@ -608,12 +608,7 @@ static void
 restore_focus_widget (NautilusWindow *window)
 {
 	if (window->priv->last_focus_widget != NULL) {
-		if (NAUTILUS_IS_VIEW (window->priv->last_focus_widget)) {
-			nautilus_view_grab_focus (NAUTILUS_VIEW (window->priv->last_focus_widget));
-		} else {
-			gtk_widget_grab_focus (window->priv->last_focus_widget);
-		}
-
+		gtk_widget_grab_focus (window->priv->last_focus_widget);
 		unset_focus_widget (window);
 	}
 }
@@ -2285,7 +2280,7 @@ nautilus_window_view_visible (NautilusWindow *window,
 		nautilus_window_slot_update_title (slot);
 	}
 
-	nautilus_window_grab_focus (window);
+	gtk_widget_grab_focus (GTK_WIDGET (window));
 
 	/* All slots, show window */
 	gtk_widget_show (GTK_WIDGET (window));
@@ -2623,6 +2618,7 @@ nautilus_window_class_init (NautilusWindowClass *class)
 	wclass->window_state_event = nautilus_window_state_event;
 	wclass->button_press_event = nautilus_window_button_press_event;
 	wclass->delete_event = nautilus_window_delete_event;
+        wclass->grab_focus = nautilus_window_grab_focus;
 
 	class->close = real_window_close;
 
diff --git a/src/nautilus-window.h b/src/nautilus-window.h
index 4b16bf752..ed102d89f 100644
--- a/src/nautilus-window.h
+++ b/src/nautilus-window.h
@@ -122,7 +122,6 @@ void                 nautilus_window_slot_close            (NautilusWindow *wind
                                                             NautilusWindowSlot *slot);
 
 void                 nautilus_window_sync_location_widgets (NautilusWindow *window);
-void                 nautilus_window_grab_focus            (NautilusWindow *window);
 
 void     nautilus_window_hide_sidebar         (NautilusWindow *window);
 void     nautilus_window_show_sidebar         (NautilusWindow *window);