Implement EditableText accessibility for Mac.

Change-Id: Ibe03975bafc5a6a420b3bd69dfaa93dbf65c9958
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoaaccessibility.mm b/src/plugins/platforms/cocoa/qcocoaaccessibility.mm
index 4b897fc211..2a03829b7a 100644
--- a/src/plugins/platforms/cocoa/qcocoaaccessibility.mm
+++ b/src/plugins/platforms/cocoa/qcocoaaccessibility.mm
@@ -39,6 +39,58 @@
 **
 ****************************************************************************/
 #include "qcocoaaccessibility.h"
+#include "qcocoaaccessibilityelement.h"
+#include <qaccessible.h>
+#include <qaccessible2.h>
+#include <private/qcore_mac_p.h>
+
+QCococaAccessibility::QCococaAccessibility()
+{
+
+}
+
+QCococaAccessibility::~QCococaAccessibility()
+{
+
+}
+
+void QCococaAccessibility::notifyAccessibilityUpdate(QAccessibleEvent *event)
+{
+    QObject *object = event->object();
+    if (!object)
+        return;
+
+    QAccessibleInterface *interface = QAccessible::queryAccessibleInterface(object);
+    if (!interface)
+        return;
+
+    switch (event->type()) {
+        case QAccessible::TextInserted :
+        case QAccessible::TextRemoved :
+        case QAccessible::TextUpdated : {
+            QCocoaAccessibleElement *element = [QCocoaAccessibleElement elementWithInterface : interface parent : nil];
+            NSAccessibilityPostNotification(element, NSAccessibilityValueChangedNotification);
+        break; }
+        default:
+            delete interface;
+        break;
+    }
+}
+
+void QCococaAccessibility::setRootObject(QObject *o)
+{
+    Q_UNUSED(o)
+}
+
+void QCococaAccessibility::initialize()
+{
+
+}
+
+void QCococaAccessibility::cleanup()
+{
+
+}
 
 namespace QCocoaAccessible {
 
@@ -218,4 +270,38 @@ QString translateAction(NSString *nsAction)
     return QString();
 }
 
+bool hasValueAttribute(QAccessibleInterface *interface)
+{
+    const QAccessible::Role qtrole = interface->role();
+    if (qtrole == QAccessible::EditableText) {
+        return true;
+    }
+
+    return false;
+}
+
+id getValueAttribute(QAccessibleInterface *interface)
+{
+    const QAccessible::Role qtrole = interface->role();
+    if (qtrole == QAccessible::EditableText) {
+        if (QAccessibleTextInterface *textInterface = interface->textInterface()) {
+            // VoiceOver will read out the entire text string at once when returning
+            // text as a value. For large text edits the size of the returned string
+            // needs to be limited and text range attributes need to be used instead.
+            // NSTextEdit returns the first sentence as the value, Do the same here:
+            int begin = 0;
+            int end = textInterface->characterCount();
+            // ### call to textAfterOffset hangs. Booo!
+            //if (textInterface->characterCount() > 0)
+            //    textInterface->textAfterOffset(0, QAccessible2::SentenceBoundary, &begin, &end);
+
+            QString text = textInterface->text(begin, end);
+            //qDebug() << "text" << begin << end << text;
+            return QCFString::toNSString(text);
+        }
+    }
+
+    return nil;
+}
+
 } // namespace QCocoaAccessible