[gnome-builder/wip/libide-merge] move navigation plumbing

[Christian Hergert <chergert src gnome org>]

commit 9209a255f11a30aaaa35017c59a1f29ae9a9e92f
Author: Christian Hergert <christian hergert me>
Date:   Fri Mar 20 20:15:18 2015 -0700

    move navigation plumbing

 src/views/gb-view-stack.c |   38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)
---
diff --git a/src/views/gb-view-stack.c b/src/views/gb-view-stack.c
index d1ed12b..fdc2840 100644
--- a/src/views/gb-view-stack.c
+++ b/src/views/gb-view-stack.c
@@ -162,6 +162,38 @@ gb_view_stack_real_empty (GbViewStack *self)
 }
 
 static void
+navigate_to_cb (GbViewStack        *self,
+                IdeBackForwardItem *item,
+                IdeBackForwardList *back_forward_list)
+{
+  IdeSourceLocation *srcloc;
+  IdeFile *file;
+  guint line;
+  guint line_offset;
+
+  g_assert (GB_IS_VIEW_STACK (self));
+  g_assert (IDE_IS_BACK_FORWARD_ITEM (item));
+  g_assert (IDE_IS_BACK_FORWARD_LIST (back_forward_list));
+
+  srcloc = ide_back_forward_item_get_location (item);
+  file = ide_source_location_get_file (srcloc);
+  line = ide_source_location_get_line (srcloc);
+  line_offset = ide_source_location_get_line_offset (srcloc);
+
+  /* implausable ... but defensive */
+  if (file == NULL)
+    return;
+
+  /* TODO: get buffer for file, move cursor to location */
+
+  {
+    gchar *path = g_file_get_path (ide_file_get_file (file));
+    g_print (">>> Load document %s +%u:%u\n", path, line, line_offset);
+    g_free (path);
+  }
+}
+
+static void
 gb_view_stack_context_handler (GtkWidget  *widget,
                                IdeContext *context)
 {
@@ -178,6 +210,12 @@ gb_view_stack_context_handler (GtkWidget  *widget,
       g_clear_object (&self->back_forward_list);
       self->back_forward_list = ide_back_forward_list_branch (back_forward);
 
+      g_signal_connect_object (self->back_forward_list,
+                               "navigate-to",
+                               G_CALLBACK (navigate_to_cb),
+                               self,
+                               G_CONNECT_SWAPPED);
+
       g_object_bind_property (self->back_forward_list, "can-go-backward",
                               self->go_backward, "sensitive",
                               G_BINDING_SYNC_CREATE);