[gitg/wip/submodules] Show dummy item when there are no dirty submodules

[Jesse van den Kieboom <jessevdk src gnome org>]

commit c35c4ea7873f2bfccdf8c88b2e8aa4094ca51b9e
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Sun Dec 14 12:08:26 2014 +0100

    Show dummy item when there are no dirty submodules

 gitg/commit/gitg-commit.vala |   23 ++++++++++++++++-------
 1 files changed, 16 insertions(+), 7 deletions(-)
---
diff --git a/gitg/commit/gitg-commit.vala b/gitg/commit/gitg-commit.vala
index 07ffd82..de1e314 100644
--- a/gitg/commit/gitg-commit.vala
+++ b/gitg/commit/gitg-commit.vala
@@ -812,13 +812,22 @@ namespace GitgCommit
                                if (hassub)
                                {
                                        model.begin_header(_("Submodule"), (uint)Sidebar.Item.Type.SUBMODULE);
-                                       current_submodules = append_items(model,
-                                                                         dirty,
-                                                                         Sidebar.Item.Type.SUBMODULE,
-                                                                         selected_paths,
-                                                                         (item) => {
-                                                                               on_unstaged_activated(new 
Gitg.StageStatusItem[] {item.item});
-                                                                         });
+
+                                       if (dirty.length == 0)
+                                       {
+                                               model.append_dummy(_("No dirty submodules"));
+                                       }
+                                       else
+                                       {
+                                               current_submodules = append_items(model,
+                                                                                 dirty,
+                                                                                 Sidebar.Item.Type.SUBMODULE,
+                                                                                 selected_paths,
+                                                                                 (item) => {
+                                                                                       
on_unstaged_activated(new Gitg.StageStatusItem[] {item.item});
+                                                                               });
+                                       }
+
                                        model.end_header();
                                }