[gitg] Implemented whole file discard

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

commit 461a91ef383a35740293c51e3e75002fc1eaac01
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Tue Jul 1 14:16:53 2014 +0200

    Implemented whole file discard

 gitg/commit/gitg-commit.vala |   79 ++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 79 insertions(+), 0 deletions(-)
---
diff --git a/gitg/commit/gitg-commit.vala b/gitg/commit/gitg-commit.vala
index a7e33fc..a6d2308 100644
--- a/gitg/commit/gitg-commit.vala
+++ b/gitg/commit/gitg-commit.vala
@@ -40,6 +40,11 @@ namespace GitgCommit
                                d_file = f;
                        }
 
+                       public Gitg.StageStatusFile file
+                       {
+                               get { return d_file; }
+                       }
+
                        public string text
                        {
                                owned get { return d_file.path; }
@@ -851,6 +856,78 @@ namespace GitgCommit
                        });
                }
 
+               private bool do_discard_file(GitgExt.UserQuery q, Gitg.StageStatusFile f)
+               {
+                       var stage = application.repository.stage;
+
+                       application.busy = true;
+
+                       stage.revert_path.begin(f.path, (o, ret) => {
+                               try
+                               {
+                                       stage.revert_path.end(ret);
+                               }
+                               catch (Error e)
+                               {
+                                       application.show_infobar(_("Failed to discard changes"),
+                                                                e.message,
+                                                                Gtk.MessageType.ERROR);
+                               }
+
+                               application.busy = false;
+                               q.quit();
+
+                               reload();
+                       });
+
+                       return false;
+               }
+
+               private void do_populate_menu(Gtk.Menu menu)
+               {
+                       var f = d_main.sidebar.get_selected_item<SidebarFile>();
+
+                       if (f == null)
+                       {
+                               return;
+                       }
+
+                       if (!d_current_staged)
+                       {
+                               var discard = new Gtk.MenuItem.with_label(_("Discard changes"));
+                               menu.append(discard);
+
+                               discard.activate.connect(() => {
+                                       var primary = _("Discard changes");
+                                       var secondary = _("Are you sure you want to permanently discard all 
changes made to the file `%s'?").printf(f.file.path);
+
+                                       var q = new GitgExt.UserQuery();
+
+                                       q.title = primary;
+                                       q.message = secondary;
+                                       q.message_type = Gtk.MessageType.QUESTION;
+
+                                       q.responses = new GitgExt.UserQueryResponse[] {
+                                               new GitgExt.UserQueryResponse(_("Discard"), 
Gtk.ResponseType.OK),
+                                               new GitgExt.UserQueryResponse(_("_Cancel"), 
Gtk.ResponseType.CANCEL)
+                                       };
+
+                                       q.default_response = Gtk.ResponseType.OK;
+
+                                       q.response.connect((w, r) => {
+                                               if (r == Gtk.ResponseType.OK)
+                                               {
+                                                       return do_discard_file(q, f.file);
+                                               }
+
+                                               return true;
+                                       });
+
+                                       application.user_query(q);
+                               });
+                       }
+               }
+
                private void build_ui()
                {
                        d_main = new Paned();
@@ -867,6 +944,8 @@ namespace GitgCommit
                                on_stage_clicked();
                        });
 
+                       d_main.sidebar.populate_popup.connect(do_populate_menu);
+
                        d_main.diff_view.bind_property("has-selection",
                                                       d_main.button_stage,
                                                       "sensitive",