Extract QGuiAction(Group) from QAction(Group) into QtGui

Simply moving QAction to QtGui was not deemed possible since
it operates on a set of controls of some kind. The approach to
extract a base class was taken instead, named QGuiAction
following the QGuiApplication scheme. QAction remains in
widgets, but changes base class.

For QActionGroup, the functions addAction(text/icon), which
create an action, cannot be implemented in QtGui, hence a base
class is needed, too (unless they are deprecated and removed).

- Extract base classes providing functionality not based on
  QtWidgets, using virtuals in QGuiActionPrivate to provide
  customization points

- Change QActionEvent to take QGuiAction, removing
  the need to forward declare QAction in QtGui

[ChangeLog][QtGui] Added QGuiAction(Group) and made the equivalent
existing classes in Qt Widgets derive from them. This provides
basic functionality for implementing actions in QML.

Task-number: QTBUG-69478
Change-Id: Ic490a5e3470939ee8af612d46ff41d4c8c91fbdf
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/gui/kernel/qguiactiongroup_p.h b/src/gui/kernel/qguiactiongroup_p.h
new file mode 100644
index 0000000000..99a58262c9
--- /dev/null
+++ b/src/gui/kernel/qguiactiongroup_p.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGUIACTIONGROUP_P_H
+#define QGUIACTIONGROUP_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of other Qt classes. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/private/qtguiglobal_p.h>
+#include <QtGui/qguiactiongroup.h>
+#include <QtGui/qfont.h>
+#if QT_CONFIG(shortcut)
+#  include <QtGui/private/qshortcutmap_p.h>
+#endif
+#include "private/qobject_p.h"
+
+QT_REQUIRE_CONFIG(action);
+
+QT_BEGIN_NAMESPACE
+
+class Q_GUI_EXPORT QGuiActionGroupPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QGuiActionGroup)
+public:
+    enum Signal { Triggered, Hovered };
+
+    QGuiActionGroupPrivate();
+    ~QGuiActionGroupPrivate();
+
+    virtual void emitSignal(Signal, QGuiAction *) {}
+
+    QList<QGuiAction *> actions;
+    QPointer<QGuiAction> current;
+    uint enabled : 1;
+    uint visible : 1;
+    QGuiActionGroup::ExclusionPolicy exclusionPolicy = QGuiActionGroup::ExclusionPolicy::Exclusive;
+
+private:
+    void _q_actionTriggered();  //private slot
+    void _q_actionChanged();    //private slot
+    void _q_actionHovered();    //private slot
+};
+
+QT_END_NAMESPACE
+
+#endif // QACTIONGROUP_P_H