Make QStatusBar text available via accessibility.

UNTESTED cause the build fails for me (unrelated to this patch).

Change-Id: Ie6836596b6fbaf93baa21d7008509774f1379f5c
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>

src/plugins/accessible/widgets/main.cpp

@@ -156,7 +156,7 @@ QAccessibleInterface *AccessibleFactory::create(const QString &classname, QObjec
         iface = new QAccessibleGroupBox(widget);
 #endif
     } else if (classname == QLatin1String("QStatusBar")) {
-        iface = new QAccessibleWidget(widget, QAccessible::StatusBar);
+        iface = new QAccessibleDisplay(widget);
 #ifndef QT_NO_PROGRESSBAR
     } else if (classname == QLatin1String("QProgressBar")) {
         iface = new QAccessibleProgressBar(widget);

src/plugins/accessible/widgets/simplewidgets.cpp

@@ -45,6 +45,7 @@
 #include <qcheckbox.h>
 #include <qpushbutton.h>
 #include <qprogressbar.h>
+#include <qstatusbar.h>
 #include <qradiobutton.h>
 #include <qtoolbutton.h>
 #include <qmenu.h>
@@ -377,6 +378,8 @@ QAccessible::Role QAccessibleDisplay::role() const
     } else if (qobject_cast<QProgressBar*>(object())) {
         return QAccessible::ProgressBar;
 #endif
+    } else if (qobject_cast<QStatusBar*>(object())) {
+        return QAccessible::StatusBar;
     }
     return QAccessibleWidget::role();
 }
@@ -398,6 +401,8 @@ QString QAccessibleDisplay::text(QAccessible::Text t) const
                 else
                     str = QString::number(l->intValue());
 #endif
+            } else if (qobject_cast<QStatusBar*>(object())) {
+                return qobject_cast<QStatusBar*>(object())->currentMessage();
             }
         }
         break;

src/widgets/widgets/qstatusbar.cpp

@@ -53,6 +53,10 @@
 #include "qsizegrip.h"
 #include "qmainwindow.h"
 
+#ifndef QT_NO_ACCESSIBILITY
+#include "qaccessible.h"
+#endif
+
 #include <private/qlayoutengine_p.h>
 #include <private/qwidget_p.h>
 
@@ -641,6 +645,14 @@ void QStatusBar::hideOrShow()
     }
 
     emit messageChanged(d->tempItem);
+
+#ifndef QT_NO_ACCESSIBILITY
+    if (QAccessible::isActive()) {
+        QAccessibleEvent event(this, QAccessible::NameChanged);
+        QAccessible::updateAccessibility(&event);
+    }
+#endif
+
     repaint(d->messageRect());
 }