Make sure we add the toolchain only in case we have a valid madde.

Reviewed-by: ck

src/plugins/help/openedviewerswidget.h

@@ -0,0 +1,81 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#ifndef OPENEDVIEWERSWIDGET_H
+#define OPENEDVIEWERSWIDGET_H
+
+#include <QtGui/QStyledItemDelegate>
+#include <QtGui/QStandardItemModel>
+#include <QtGui/QWidget>
+
+#include "ui_openedviewerswidget.h"
+
+namespace Help {
+    namespace Internal {
+
+class OpenedViewersDelegate : public QStyledItemDelegate
+{   
+    Q_OBJECT
+public:
+    OpenedViewersDelegate(QObject *parent = 0);
+
+    void paint(QPainter *painter, const QStyleOptionViewItem &option,
+               const QModelIndex &index) const;
+
+    mutable QModelIndex pressedIndex;
+};
+
+class OpenedViewersWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    OpenedViewersWidget(QWidget *parent = 0);
+    ~OpenedViewersWidget();
+
+    bool eventFilter(QObject *obj, QEvent *event);
+
+private slots:
+    void resetWidgetModel();
+    void updateViewerWidgetModel(int index);
+    void removeViewerFromWidgetModel(int index);
+
+    void handleClicked(const QModelIndex &index);
+    void handlePressed(const QModelIndex &index);
+    void contextMenuRequested(const QPoint &pos);
+
+private:
+    Ui::OpenedViewersWidget m_ui;
+    QStandardItemModel *m_model;
+    OpenedViewersDelegate *m_delegate;
+};
+
+    }   // Internal
+}   // Help
+
+#endif  // OPENEDVIEWERSWIDGET_H