[gitg] Implement opening file from staging area

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

commit fc072c5bad1a41ba18a5ca1846ea2b63e2b8a871
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Wed Dec 17 20:30:39 2014 +0100

    Implement opening file from staging area

 gitg/commit/gitg-commit-sidebar.vala |    9 ++++++
 gitg/commit/gitg-commit.vala         |   51 ++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 0 deletions(-)
---
diff --git a/gitg/commit/gitg-commit-sidebar.vala b/gitg/commit/gitg-commit-sidebar.vala
index 9dac9b0..993aec0 100644
--- a/gitg/commit/gitg-commit-sidebar.vala
+++ b/gitg/commit/gitg-commit-sidebar.vala
@@ -31,6 +31,9 @@ class Sidebar : Gitg.Sidebar
        [Signal(action = true)]
        public signal void discard_selection();
 
+       [Signal(action = true)]
+       public signal void edit_selection();
+
        public signal void selected_items_changed(Gitg.SidebarItem[] items);
 
        public class Item : Object, Gitg.SidebarItem
@@ -96,6 +99,12 @@ class Sidebar : Gitg.Sidebar
                                            "discard-selection",
                                            0);
 
+               Gtk.BindingEntry.add_signal(binding_set,
+                                           Gdk.Key.e,
+                                           Gdk.ModifierType.CONTROL_MASK,
+                                           "edit-selection",
+                                           0);
+
                var sel = get_selection();
                sel.mode = Gtk.SelectionMode.MULTIPLE;
        }
diff --git a/gitg/commit/gitg-commit.vala b/gitg/commit/gitg-commit.vala
index a2be9ea..880f831 100644
--- a/gitg/commit/gitg-commit.vala
+++ b/gitg/commit/gitg-commit.vala
@@ -1342,6 +1342,26 @@ namespace GitgCommit
                        }
                }
 
+               private void do_edit_items(Gitg.StageStatusItem[] items)
+               {
+                       var screen = d_main.get_screen();
+                       var root = application.repository.get_workdir();
+
+                       foreach (var item in items)
+                       {
+                               var file = root.get_child(item.path);
+
+                               try
+                               {
+                                       Gtk.show_uri(screen, file.get_uri(), Gdk.CURRENT_TIME);
+                               }
+                               catch (Error e)
+                               {
+                                       stderr.printf("Failed to launch application for %s: %s\n", item.path, 
e.message);
+                               }
+                       }
+               }
+
                private bool do_discard_items(GitgExt.UserQuery q, Gitg.StageStatusItem[] items)
                {
                        application.busy = true;
@@ -1463,6 +1483,29 @@ namespace GitgCommit
                                        on_discard_menu_activated(sitems);
                                });
                        }
+
+                       var canedit = true;
+
+                       foreach (var item in sitems)
+                       {
+                               var file = item as Gitg.StageStatusFile;
+
+                               if (file == null || (file.flags & Ggit.StatusFlags.WORKING_TREE_DELETED) != 0)
+                               {
+                                       canedit = false;
+                                       break;
+                               }
+                       }
+
+                       if (canedit)
+                       {
+                               var edit = new Gtk.MenuItem.with_mnemonic(_("_Edit file"));
+                               menu.append(edit);
+
+                               edit.activate.connect(() => {
+                                       do_edit_items(sitems);
+                               });
+                       }
                }
 
                private Gitg.StageStatusItem[] items_to_stage_items(Sidebar.Item[] items)
@@ -1595,6 +1638,14 @@ namespace GitgCommit
                                }
                        });
 
+                       d_main.sidebar.edit_selection.connect(() => {
+                               var sel = d_main.sidebar.get_selected_items<Gitg.SidebarItem>();
+                               Sidebar.Item.Type type;
+
+                               var sitems = items_for_items(sel, out type);
+                               do_edit_items(sitems);
+                       });
+
                        d_main.sidebar.selected_items_changed.connect(sidebar_selection_changed);
 
                        d_main.button_commit.clicked.connect(() => {