new file mode 100644
--- /dev/null
+++ b/gui/src/documentation-dockwidget.cc
@@ -0,0 +1,45 @@
+/* OctaveGUI - A graphical user interface for Octave
+ * Copyright (C) 2011 Jacob Dawid (jacob.dawid@googlemail.com)
+ *
+ * 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 3 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. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "documentation-dockwidget.h"
+
+documentation_dock_widget::documentation_dock_widget (QWidget *parent)
+  : QDockWidget (parent)
+{
+  setObjectName ("DocumentationDockWidget");
+  setWindowTitle (tr ("Documentation"));
+
+  connect (this, SIGNAL (visibilityChanged (bool)),
+           this, SLOT (handle_visibility_changed (bool)));
+
+  _webinfo = new webinfo (this);
+  setWidget (_webinfo);
+}
+
+void
+documentation_dock_widget::handle_visibility_changed (bool visible)
+{
+  if (visible)
+    emit active_changed (true);
+}
+
+void
+documentation_dock_widget::closeEvent (QCloseEvent *event)
+{
+  emit active_changed (false);
+  QDockWidget::closeEvent (event);
+}