[gnome-builder] grid: add focus left/right actions

[Christian Hergert <chergert src gnome org>]

commit fc7e62c0edcd0ae867d6c8481f81bebf1675a80f
Author: Christian Hergert <christian hergert me>
Date:   Mon Dec 8 13:34:35 2014 -0800

    grid: add focus left/right actions

 src/documents/gb-document-grid.c      |   35 ++++++++++++++++++++++++
 src/documents/gb-document-stack.c     |   48 +++++++++++++++++++++++++++++++++
 src/resources/keybindings/default.ini |    2 +
 3 files changed, 85 insertions(+), 0 deletions(-)
---
diff --git a/src/documents/gb-document-grid.c b/src/documents/gb-document-grid.c
index c2c5bb2..2480ab8 100644
--- a/src/documents/gb-document-grid.c
+++ b/src/documents/gb-document-grid.c
@@ -189,6 +189,35 @@ cleanup:
   g_list_free (stacks);
 }
 
+static void
+gb_document_grid_focus_neighbor (GbDocumentGrid   *grid,
+                                 GtkDirectionType  dir,
+                                 GbDocumentStack  *stack)
+{
+  GtkWidget *neighbor;
+
+  g_return_if_fail (GB_IS_DOCUMENT_GRID (grid));
+  g_return_if_fail (GB_IS_DOCUMENT_STACK (stack));
+
+  switch ((int)dir)
+    {
+    case GTK_DIR_LEFT:
+      neighbor = gb_document_grid_get_stack_before (grid, stack);
+      break;
+
+    case GTK_DIR_RIGHT:
+      neighbor = gb_document_grid_get_stack_after (grid, stack);
+      break;
+
+    default:
+      neighbor = NULL;
+      break;
+    }
+
+  if (neighbor != NULL)
+    gtk_widget_grab_focus (neighbor);
+}
+
 static GtkPaned *
 gb_document_grid_create_paned (GbDocumentGrid *grid)
 {
@@ -220,6 +249,12 @@ gb_document_grid_create_stack (GbDocumentGrid *grid)
                            grid,
                            G_CONNECT_SWAPPED);
 
+  g_signal_connect_object (stack,
+                           "focus-neighbor",
+                           G_CALLBACK (gb_document_grid_focus_neighbor),
+                           grid,
+                           G_CONNECT_SWAPPED);
+
   return stack;
 }
 
diff --git a/src/documents/gb-document-stack.c b/src/documents/gb-document-stack.c
index 8cfdf40..b244cdf 100644
--- a/src/documents/gb-document-stack.c
+++ b/src/documents/gb-document-stack.c
@@ -52,6 +52,7 @@ enum {
 enum {
   CREATE_VIEW,
   EMPTY,
+  FOCUS_NEIGHBOR,
   LAST_SIGNAL
 };
 
@@ -508,6 +509,40 @@ gb_document_stack_split_document_right (GSimpleAction *action,
 }
 
 static void
+gb_document_stack_focus_left (GSimpleAction *action,
+                              GVariant      *parameter,
+                              gpointer       user_data)
+{
+  GbDocumentStack *stack = user_data;
+  GbDocumentView *view;
+
+  g_return_if_fail (GB_IS_DOCUMENT_STACK (stack));
+
+  view = gb_document_stack_get_active_view (stack);
+  if (!view)
+    return;
+
+  g_signal_emit (stack, gSignals [FOCUS_NEIGHBOR], 0, GTK_DIR_LEFT);
+}
+
+static void
+gb_document_stack_focus_right (GSimpleAction *action,
+                               GVariant      *parameter,
+                               gpointer       user_data)
+{
+  GbDocumentStack *stack = user_data;
+  GbDocumentView *view;
+
+  g_return_if_fail (GB_IS_DOCUMENT_STACK (stack));
+
+  view = gb_document_stack_get_active_view (stack);
+  if (!view)
+    return;
+
+  g_signal_emit (stack, gSignals [FOCUS_NEIGHBOR], 0, GTK_DIR_RIGHT);
+}
+
+static void
 gb_document_stack_finalize (GObject *object)
 {
   GbDocumentStackPrivate *priv = GB_DOCUMENT_STACK (object)->priv;
@@ -630,6 +665,17 @@ gb_document_stack_class_init (GbDocumentStackClass *klass)
                   G_TYPE_NONE,
                   0);
 
+  gSignals [FOCUS_NEIGHBOR] =
+    g_signal_new ("focus-neighbor",
+                  GB_TYPE_DOCUMENT_STACK,
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL,
+                  g_cclosure_marshal_generic,
+                  G_TYPE_NONE,
+                  1,
+                  GTK_TYPE_TEXT_DIRECTION);
+
   g_type_ensure (GB_TYPE_DOCUMENT_MENU_BUTTON);
 }
 
@@ -641,6 +687,8 @@ gb_document_stack_init (GbDocumentStack *self)
     { "move-document-right", gb_document_stack_move_document_right },
     { "split-document-left", gb_document_stack_split_document_left },
     { "split-document-right", gb_document_stack_split_document_right },
+    { "focus-left", gb_document_stack_focus_left },
+    { "focus-right", gb_document_stack_focus_right },
     { "close", gb_document_stack_close },
   };
   GSimpleActionGroup *actions;
diff --git a/src/resources/keybindings/default.ini b/src/resources/keybindings/default.ini
index 32b38a8..ef891f0 100644
--- a/src/resources/keybindings/default.ini
+++ b/src/resources/keybindings/default.ini
@@ -33,5 +33,7 @@ switch-pane = <Control><Shift>K
 
 [stack]
 focus-search = <Control>J
+focus-left = <Control>H
+focus-right = <Control>L
 move-document-left = <Control><Shift>H
 move-document-right = <Control><Shift>L