Update accessibility StateChange by custom event.

Subclass QAccessibleEvent to give details what changed in the
state change.

Change-Id: I9005d311e85a3c8bfa6e062833fa6a8a7dc6a4a4
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>

2 files changed, 17 insertions, 1 deletions

diff --git a/src/gui/accessible/qaccessible.cpp b/src/gui/accessible/qaccessible.cpp
index a7843ba227..91b0b5fbe6 100644
--- a/src/gui/accessible/qaccessible.cpp
+++ b/src/gui/accessible/qaccessible.cpp
@@ -257,7 +257,8 @@ QT_BEGIN_NAMESPACE
     \value SelectionWithin                  Several changes to a selection has occurred in an item
                                             view.
     \value SoundPlayed                      A sound has been played by an object
-    \value StateChanged                     The QAccessible::State of an object has changed.
+    \omitvalue StateChanged                 The QAccessible::State of an object has changed.
+                                            This value is used internally for the QAccessibleStateChangeEvent.
     \value TableCaptionChanged              A table caption has been changed.
     \value TableColumnDescriptionChanged    The description of a table column, typically found in
                                             the column's header, has been changed.
diff --git a/src/gui/accessible/qaccessible.h b/src/gui/accessible/qaccessible.h
index 8c962ffb53..e8a5cf8bad 100644
--- a/src/gui/accessible/qaccessible.h
+++ b/src/gui/accessible/qaccessible.h
@@ -452,6 +452,21 @@ private:
     int m_child;
 };
 
+class Q_GUI_EXPORT QAccessibleStateChangeEvent :public QAccessibleEvent
+{
+public:
+    inline QAccessibleStateChangeEvent(QAccessible::State state, QObject *obj, int chld = -1)
+        : QAccessibleEvent(QAccessible::StateChanged, obj, chld), m_changedStates(state)
+    {}
+
+    QAccessible::State changedStates() const {
+        return m_changedStates;
+    }
+
+private:
+    QAccessible::State m_changedStates;
+};
+
 
 #define QAccessibleInterface_iid "org.qt-project.Qt.QAccessibleInterface"
 Q_DECLARE_INTERFACE(QAccessibleInterface, QAccessibleInterface_iid)