Reuse code for open documents and open help pages panes

Change-Id: I4924e72e732eb447d2e581d60f5e4426f5ff7cb2
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/coreplugin/opendocumentstreeview.h

@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef OPENDOCUMENTSTREEVIEW_H
+#define OPENDOCUMENTSTREEVIEW_H
+
+#include "core_global.h"
+
+#include <utils/itemviews.h>
+
+namespace Core {
+namespace Internal { class OpenDocumentsDelegate; }
+
+class CORE_EXPORT OpenDocumentsTreeView : public Utils::TreeView
+{
+    Q_OBJECT
+public:
+    explicit OpenDocumentsTreeView(QWidget *parent = 0);
+
+    void setModel(QAbstractItemModel *model);
+    void setCloseButtonVisible(bool visible);
+
+signals:
+    void closeActivated(const QModelIndex &index);
+
+protected:
+    bool eventFilter(QObject *obj, QEvent *event);
+
+private:
+    Internal::OpenDocumentsDelegate *m_delegate;
+};
+
+} // namespace Core
+
+#endif // OPENDOCUMENTSTREEVIEW_H