[aptitude @ Import the Subversion repository into darcs.]

1 files changed, 47 insertions, 0 deletions

diff --git a/src/apt_undo_tree.cc b/src/apt_undo_tree.cc
new file mode 100644
index 00000000..df426f59
--- /dev/null
+++ b/src/apt_undo_tree.cc
@@ -0,0 +1,47 @@
+// apt_undo_tree.cc
+//
+//   Copyright (C) 2005 Daniel Burrows
+//
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the GNU General Public License as
+//   published by the Free Software Foundation; either version 2 of
+//   the License, or (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//   General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program; see the file COPYING.  If not, write to
+//   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+//   Boston, MA 02111-1307, USA.
+
+#include "apt_undo_tree.h"
+
+#include "ui.h"
+
+#include <generic/apt/apt.h>
+
+#include <generic/util/undo.h>
+
+apt_undo_tree::apt_undo_tree()
+{
+}
+
+bool apt_undo_tree::undo_undo_enabled()
+{
+  return apt_undos != NULL && apt_undos->size() > 0;
+}
+
+bool apt_undo_tree::undo_undo()
+{
+  if(apt_undos != NULL && apt_undos->size() > 0)
+    {
+      apt_undos->undo();
+      package_states_changed();
+      return true;
+    }
+  else
+    return false;
+}