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, 3 insertions, 0 deletions

diff --git a/src/core/web_contents_adapter_client.h b/src/core/web_contents_adapter_client.h
index 686b82379..b7836e4ca 100644
--- a/src/core/web_contents_adapter_client.h
+++ b/src/core/web_contents_adapter_client.h
@@ -152,6 +152,9 @@ public:
     virtual void didFetchDocumentInnerText(quint64 requestId, const QString& result) = 0;
     virtual void didFindText(quint64 requestId, int matchCount) = 0;
     virtual void passOnFocus(bool reverse) = 0;
+    // returns the last QObject (QWidget/QQuickItem) based object in the accessibility
+    // hierarchy before going into the BrowserAccessibility tree
+    virtual QObject *accessibilityParentObject() = 0;
     virtual void javaScriptConsoleMessage(JavaScriptConsoleMessageLevel level, const QString& message, int lineNumber, const QString& sourceID) = 0;
     virtual void authenticationRequired(const QUrl &requestUrl, const QString &realm, bool isProxy, const QString &challengingHost, QString *outUser, QString *outPassword) = 0;
     virtual void runMediaAccessPermissionRequest(const QUrl &securityOrigin, MediaRequestFlags requestFlags) = 0;