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, 5 insertions, 5 deletions

diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp
index 54502bc6a3..23defef50c 100644
--- a/src/gui/kernel/qevent.cpp
+++ b/src/gui/kernel/qevent.cpp
@@ -3324,18 +3324,18 @@ QWhatsThisClickedEvent::~QWhatsThisClickedEvent()
 /*!
     \class QActionEvent
     \brief The QActionEvent class provides an event that is generated
-    when a QAction is added, removed, or changed.
+    when a QGuiAction is added, removed, or changed.
 
     \ingroup events
     \inmodule QtGui
 
-    Actions can be added to widgets using QWidget::addAction(). This
-    generates an \l ActionAdded event, which you can handle to provide
+    Actions can be added to controls, for example by using QWidget::addAction().
+    This generates an \l ActionAdded event, which you can handle to provide
     custom behavior. For example, QToolBar reimplements
     QWidget::actionEvent() to create \l{QToolButton}s for the
     actions.
 
-    \sa QAction, QWidget::addAction(), QWidget::removeAction(), QWidget::actions()
+    \sa QGuiAction, QWidget::addAction(), QWidget::removeAction(), QWidget::actions()
 */
 
 /*!
@@ -3346,7 +3346,7 @@ QWhatsThisClickedEvent::~QWhatsThisClickedEvent()
     type is ActionAdded, the action is to be inserted before the
     action \a before. If \a before is 0, the action is appended.
 */
-QActionEvent::QActionEvent(int type, QAction *action, QAction *before)
+QActionEvent::QActionEvent(int type, QGuiAction *action, QGuiAction *before)
     : QEvent(static_cast<QEvent::Type>(type)), act(action), bef(before)
 {}