Move QButtonGroup implementation from qabstractbutton.cpp to qbuttongroup.cpp

Because it's the right thing to do.

Needed to introduce qbuttongroup_p.h because QAbstractButton
likes to poke around in QButtonGroup's private parts.

Fixed includes of qabstractbutton_p.h so it compiles on it's
own.

Change-Id: Ic7725277d2419754de273b2abd4790476edd0eb4
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/src/widgets/widgets/qbuttongroup_p.h b/src/widgets/widgets/qbuttongroup_p.h
new file mode 100644
index 0000000000..01c0367876
--- /dev/null
+++ b/src/widgets/widgets/qbuttongroup_p.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtWidgets module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** 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 The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBUTTONGROUP_P_H
+#define QBUTTONGROUP_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtWidgets/qbuttongroup.h>
+
+#ifndef QT_NO_BUTTONGROUP
+
+#include <QtCore/private/qobject_p.h>
+
+#include <QtCore/qlist.h>
+#include <QtCore/qpointer.h>
+#include <QtCore/qhash.h>
+
+QT_BEGIN_NAMESPACE
+
+class QButtonGroupPrivate: public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QButtonGroup)
+
+public:
+    QButtonGroupPrivate() : exclusive(true) {}
+
+    QList<QAbstractButton *> buttonList;
+    QPointer<QAbstractButton> checkedButton;
+    void detectCheckedButton();
+    void notifyChecked(QAbstractButton *button);
+
+    bool exclusive;
+    QHash<QAbstractButton*, int> mapping;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_BUTTONGROUP
+
+#endif // QBUTTONGROUP_P_H