Add core accessibility

This commit adds the basics to bridge the blink
accessibility classes to QAccessibleInterfaces.

Note that it needs two follow up commits to implement the bridging from
the QWidget/Qt Quick worlds.

[ChangeLog][Accessibility] QtWebEngine now has accessibility
support, enabling assistive technology such as screen readers to work
with it.

Change-Id: Ied1d97e61a024115ac7a9245331211f6d9fac1b4
Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/core/render_widget_host_view_qt.h b/src/core/render_widget_host_view_qt.h
index ff73b5734..66cbef501 100644
--- a/src/core/render_widget_host_view_qt.h
+++ b/src/core/render_widget_host_view_qt.h
@@ -44,9 +44,11 @@
 
 #include "render_widget_host_view_qt_delegate.h"
 
+#include "browser_accessibility_delegate_qt.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "cc/resources/transferable_resource.h"
+#include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "delegated_frame_node.h"
 #include "ui/events/gestures/gesture_recognizer.h"
@@ -65,6 +67,7 @@ class QMouseEvent;
 class QTouchEvent;
 class QVariant;
 class QWheelEvent;
+class QAccessibleInterface;
 QT_END_NAMESPACE
 
 class WebContentsAdapterClient;
@@ -207,6 +210,8 @@ public:
 #endif // defined(USE_AURA)
 #endif // defined(OS_WIN)
 
+    QAccessibleInterface *GetQtAccessible();
+
 private:
     void sendDelegatedFrameAck();
     void Paint(const gfx::Rect& damage_rect);
@@ -217,6 +222,7 @@ private:
     float dpiScale() const;
 
     bool IsPopup() const;
+    void CreateBrowserAccessibilityManagerIfNeeded();
 
     content::RenderWidgetHostImpl *m_host;
     scoped_ptr<ui::GestureRecognizer> m_gestureRecognizer;
@@ -224,6 +230,7 @@ private:
     QMap<int, int> m_touchIdMapping;
     blink::WebTouchEvent m_accumTouchEvent;
     scoped_ptr<RenderWidgetHostViewQtDelegate> m_delegate;
+    scoped_ptr<BrowserAccessibilityDelegateQt> m_accessibilityDelegate;
 
     QExplicitlySharedDataPointer<DelegatedFrameNodeData> m_frameNodeData;
     cc::ReturnedResourceArray m_resourcesToRelease;