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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef CHROME_VIEWS_GROUP_TABLE_VIEW_H__
+#define CHROME_VIEWS_GROUP_TABLE_VIEW_H__
+
+#include "base/task.h"
+#include "chrome/views/table_view.h"
+
+// The GroupTableView adds grouping to the TableView class.
+// It allows to have groups of rows that act as a single row from the selection
+// perspective. Groups are visually separated by a horizontal line.
+
+namespace ChromeViews {
+
+struct GroupRange {
+  int start;
+  int length;
+};
+
+// The model driving the GroupTableView.
+class GroupTableModel : public TableModel {
+ public:
+  // Populates the passed range with the first row/last row (included)
+  // that this item belongs to.
+  virtual void GetGroupRangeForItem(int item, GroupRange* range) = 0;
+};
+
+class GroupTableView : public TableView {
+ public:
+   // The view class name.
+   static const char kViewClassName[];
+
+  GroupTableView(GroupTableModel* model,
+                 const std::vector<TableColumn>& columns,
+                 TableTypes table_type, bool single_selection,
+                 bool resizable_columns, bool autosize_columns);
+  virtual ~GroupTableView();
+
+  virtual std::string GetClassName() const;
+
+ protected:
+  // Notification from the ListView that the selected state of an item has
+  // changed.
+  void OnSelectedStateChanged(int item, bool is_selected);
+
+  // Extra-painting required to draw the separator line between groups.
+  virtual bool ImplementPostPaint() { return true; }
+  virtual void PostPaint(int row, int column, bool selected,
+                         const CRect& bounds, HDC device_context);
+
+  // In order to make keyboard navigation possible (using the Up and Down
+  // keys), we must take action when an arrow key is pressed. The reason we
+  // need to process this message has to do with the manner in which the focus
+  // needs to be set on a group item when a group is selected.
+  virtual void OnKeyDown(unsigned short virtual_keycode);
+
+ private:
+  // Make the selection of group consistent.
+  void SyncSelection();
+
+  GroupTableModel *model_;
+
+  // A factory to make the selection consistent among groups.
+  ScopedRunnableMethodFactory<GroupTableView> sync_selection_factory_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(GroupTableView);
+};
+
+}  // namespace ChromeViews
+
+#endif  // CHROME_VIEWS_GROUP_TABLE_VIEW_H__